Merge pull request #4 from eSlider/release-please--branches--main--components--go-onlyoffice

chore(main): release 0.6.0

.cursor/rules/no-synthetic-mocks.mdc

@@ -0,0 +1,38 @@
+---
+description: No synthetic OnlyOffice/Gitea mocks; prefer real integration tests
+globs:
+  - "**/*_test.go"
+alwaysApply: false
+---
+# Testing policy — no synthetic vendor mockups
+
+When authoring tests under `github.com/eslider/go-onlyoffice`, do **not**
+build `httptest.NewServer` fixtures that emulate OnlyOffice, Gitea, or any
+other third-party API. Simulated vendor responses drift from reality, give
+false green signals, and hide protocol changes.
+
+## What to do instead
+
+1. **Unit tests** — pure Go, no network. Use them for parsers, encoders,
+   struct conversions, pure helpers. No `httptest` that fakes the vendor.
+2. **Integration tests** — `//go:build integration` tag in a `*_integration_test.go`
+   file. Read credentials from env:
+   - `ONLYOFFICE_URL` / `ONLYOFFICE_HOST`
+   - `ONLYOFFICE_USER` / `ONLYOFFICE_NAME`
+   - `ONLYOFFICE_PASS` / `ONLYOFFICE_PASSWORD`
+   Call `t.Skip("ONLYOFFICE_URL not set")` when credentials are absent so the
+   regular `go test ./...` stays green in CI.
+3. **Run integration**: `go test -tags=integration ./...`.
+4. **Every new endpoint** ships with an integration test in the same PR.
+
+## Narrow exception
+
+`httptest.NewServer` is OK when verifying the **caller's own** HTTP
+behaviour (e.g. a user's handler or middleware we are wrapping). It is **not**
+OK when the test server is pretending to be OnlyOffice or Gitea.
+
+## Migrating existing tests
+
+If you find a test that handles routes like `/api/2.0/...` and returns canned
+JSON, convert it to an integration test (or delete it if the behaviour is
+already covered by integration).

.env.example

@@ -0,0 +1,27 @@
+# OnlyOffice Workspace credentials. Used by cmd/oo (the library itself
+# does not load .env files — only its CLI does, via godotenv).
+#
+# Primary names:
+ONLYOFFICE_URL=https://office.example.com
+ONLYOFFICE_USER=
+ONLYOFFICE_PASS=
+
+# Accepted aliases (only one of each pair is needed):
+# ONLYOFFICE_HOST=
+# ONLYOFFICE_NAME=
+# ONLYOFFICE_PASSWORD=
+#
+# produktor.io operator aliases (CLI-only):
+# OO_URL=
+# OO_USER=
+# OO_PASS=
+
+# Optional defaults for calendar/project helpers:
+ONLYOFFICE_CALENDAR_ID=1
+ONLYOFFICE_PROJECT_ID=33
+
+# oo mails uses ONLYOFFICE_URL/USER/PASS above (Workspace Mail addon).
+
+# cmd/office TUI — optional Document Server for DOCX→HTML preview:
+# ONLYOFFICE_DOCS_URL=https://docs.example.com
+# ONLYOFFICE_DOCS_SECRET=

.github/workflows/release-please.yml

@@ -0,0 +1,28 @@
+name: Release Please
+
+on:
+  push:
+    branches: [main]
+  workflow_dispatch:
+
+permissions:
+  contents: write
+  pull-requests: write
+  issues: write
+
+jobs:
+  release-please:
+    name: Release Please
+    runs-on: ubuntu-latest
+    steps:
+      - name: Run release-please
+        uses: googleapis/release-please-action@v4
+        id: release
+        with:
+          config-file: release-please-config.json
+          manifest-file: .release-please-manifest.json
+          token: ${{ secrets.RELEASE_PLEASE_TOKEN != '' && secrets.RELEASE_PLEASE_TOKEN || secrets.GITHUB_TOKEN }}
+
+    outputs:
+      release_created: ${{ steps.release.outputs.release_created }}
+      tag_name: ${{ steps.release.outputs.tag_name }}

.github/workflows/release.yml

@@ -0,0 +1,39 @@
+name: Release
+
+on:
+  push:
+    tags: ["v*"]
+  workflow_dispatch:
+    inputs:
+      tag:
+        description: Git tag to release (e.g. v0.4.0)
+        required: true
+        type: string
+
+permissions:
+  contents: write
+
+jobs:
+  goreleaser:
+    name: GoReleaser
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+          ref: ${{ github.event_name == 'workflow_dispatch' && format('refs/tags/{0}', inputs.tag) || github.ref }}
+
+      - name: Set up Go
+        uses: actions/setup-go@v5
+        with:
+          go-version: stable
+          cache: true
+
+      - name: Run GoReleaser
+        uses: goreleaser/goreleaser-action@v6
+        with:
+          distribution: goreleaser
+          version: "~> v2"
+          args: release --clean
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

.github/workflows/test.yml

@@ -0,0 +1,49 @@
+name: Tests
+
+on:
+  push:
+    branches: [main]
+  pull_request:
+
+permissions:
+  contents: read
+
+jobs:
+  test:
+    name: Test (Go ${{ matrix.go }})
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        go: ["1.22", "stable"]
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Set up Go
+        uses: actions/setup-go@v5
+        with:
+          go-version: ${{ matrix.go }}
+          cache: true
+
+      - name: Verify dependencies
+        run: |
+          go mod verify
+          go mod download
+
+      - name: Check go mod tidy
+        run: |
+          go mod tidy
+          git diff --exit-code go.mod go.sum
+
+      - name: Vet
+        run: go vet ./...
+
+      - name: Build oo
+        run: go build -trimpath -buildvcs=false -o /tmp/oo ./cmd/oo
+
+      - name: Build office
+        run: go build -trimpath -buildvcs=false -o /tmp/office ./cmd/office
+
+      - name: Run tests
+        run: go test -race -shuffle=on -count=1 ./...

.gitignore

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+# Local environment
+.env
+
+# Go workspace (for local multi-module dev; see inventar ASR-0008)
+go.work
+go.work.sum
+
+# Build artifacts (top-level compiled binaries; cmd/oo/ source tree is tracked)
+/oo
+/oo-cli
+/bin/

.goreleaser.yml

@@ -0,0 +1,124 @@
+version: 2
+
+project_name: go-onlyoffice
+
+before:
+  hooks:
+    - go mod tidy
+    - go mod verify
+
+builds:
+  - id: oo
+    main: ./cmd/oo
+    binary: oo
+    env:
+      - CGO_ENABLED=0
+    goos:
+      - linux
+      - darwin
+      - windows
+    goarch:
+      - amd64
+      - arm64
+    ignore:
+      - goos: windows
+        goarch: arm64
+    flags:
+      - -trimpath
+      - -buildvcs=false
+    ldflags:
+      - -s -w
+      - -X main.version={{.Version}}
+      - -X main.commit={{.Commit}}
+      - -X main.date={{.Date}}
+  - id: office
+    main: ./cmd/office
+    binary: office
+    env:
+      - CGO_ENABLED=0
+    goos:
+      - linux
+      - darwin
+      - windows
+    goarch:
+      - amd64
+      - arm64
+    ignore:
+      - goos: windows
+        goarch: arm64
+    flags:
+      - -trimpath
+      - -buildvcs=false
+
+archives:
+  - id: oo
+    ids: [oo]
+    name_template: "oo_{{ .Version }}_{{ .Os }}_{{ .Arch }}"
+    format_overrides:
+      - goos: windows
+        formats: [zip]
+    files:
+      - LICENSE
+      - README.md
+      - CHANGELOG.md
+  - id: office
+    ids: [office]
+    name_template: "office_{{ .Version }}_{{ .Os }}_{{ .Arch }}"
+    format_overrides:
+      - goos: windows
+        formats: [zip]
+    files:
+      - LICENSE
+      - README.md
+      - CHANGELOG.md
+
+checksum:
+  name_template: checksums.txt
+  algorithm: sha256
+
+snapshot:
+  version_template: "{{ .Tag }}-next"
+
+changelog:
+  use: github
+  sort: asc
+  groups:
+    - title: Features
+      regexp: '^.*?feat(\(.+\))??!?:.+$'
+      order: 0
+    - title: Bug fixes
+      regexp: '^.*?fix(\(.+\))??!?:.+$'
+      order: 1
+    - title: Performance
+      regexp: '^.*?perf(\(.+\))??!?:.+$'
+      order: 2
+    - title: Others
+      order: 999
+  filters:
+    exclude:
+      - "^docs:"
+      - "^test:"
+      - "^ci:"
+      - "^chore:"
+      - "^style:"
+      - "^build:"
+      - "Merge pull request"
+      - "Merge branch"
+
+release:
+  draft: false
+  prerelease: auto
+  mode: replace
+  header: |
+    ## Release {{ .Tag }}
+
+    Install:
+
+    ```sh
+    go install github.com/eslider/go-onlyoffice/cmd/oo@{{ .Tag }}
+    go install github.com/eslider/go-onlyoffice/cmd/office@{{ .Tag }}
+    ```
+
+    Or download prebuilt binaries below.
+  footer: |
+    **Full Changelog**: https://github.com/eSlider/go-onlyoffice/compare/{{ .PreviousTag }}...{{ .Tag }}

.release-please-manifest.json

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+{
+  ".": "0.6.0"
+}

AGENTS.md

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+# AGENTS — go-onlyoffice
+
+Canonical Go client for OnlyOffice Workspace (Projects + Calendar + CRM) and the `oo` command.
+
+## Topology
+
+- **Library — flat package `onlyoffice` at repo root.** Split by *domain file*, not by subpackage, so every call site reads `c.XxxYyy()` against a single `*Client`. Files:
+  - `client.go` — `Client`, `Credentials`, `Defaults`, env helpers, `NewClient`.
+  - `request.go` — `Request`, `Query`, `Time`, `Token`, `MetaResponse`, `Permissions`.
+  - `auth.go` — `Authenticate`, `AuthenticateContext`, `InvalidateToken`, `Auth`, token lifecycle.
+  - `http.go` — transport + DRY response decoders (`ResponseArray`/`ResponseObject`/`postFormObject`/`putFormObject`/`deleteObject`).
+  - `projects.go`, `tasks.go`, `users.go`, `calendar.go`, `crm.go`, `files.go`, `mails.go` — typed / untyped domain methods. **`files.go`** — CRM opportunity upload plus **project/task Documents** (`GetProjectFiles`, `UploadProjectFile`, `GetTaskFiles`, `AttachFilesToTask`, `UploadTaskFile`, `DetachTaskFile`, `GetFile`, `RenameFile`, `DeleteFiles`, `DownloadFile`). **`mails.go`** — OnlyOffice Workspace Mail addon (`ListMailAccounts`, `ListMailFolders`, `ListMailMessages`, `GetMailMessage`, `RemoveMailMessages`).
+  - Pure stdlib + `google/go-querystring`; no UI, no dotenv.
+- **CLI — `cmd/oo/` as `package main`.** Cobra wrapper that loads `.env` via `godotenv` at startup. **Subject-based command tree** mirroring [`tea`](https://gitea.com/gitea/tea):
+  - `main.go` — entry point (docstring lists the command tree).
+  - `common.go` — `rootCmd`, `newOO`, `printTable`/`printObject`, `--output table|json` flag.
+  - `calendar.go`, `projects.go`, `projects_files.go`, `tasks.go`, `tasks_files.go`, `users.go`, `contacts.go`, `opportunities.go`, `cases.go`, `crm_tasks.go`, `apps.go` — one file per subject (or per subject facet), each registers in `init()`.
+  - CLI-only deps (`spf13/cobra`, `joho/godotenv`) stay out of the library.
+- **TUI — `cmd/office/` as `package main`.** Bubble Tea three-pane browser (module tree, selectable list, markdown preview). Reuses `cmd/internal/bootstrap` for env/auth and the root `onlyoffice` library for all API calls. UI logic in `cmd/office/ui/`; preview/formatting in `cmd/office/preview/`; list loaders in `cmd/office/fetch/`.
+- **Shared bootstrap — `cmd/internal/bootstrap/`.** `LoadEnv()` + `NewClient(ctx)` extracted from `oo`; both binaries import it.
+- **Applications sync — `cmd/oo/applications/`.** README→CRM bridge, CV-specific; kept under `cmd/oo/` so it's clear it's internal to the binary, not a library feature.
+
+## Rules
+
+- Library must never call `godotenv.Load()` — the CLI does that.
+- New endpoints go into the library first; CLI commands are thin wrappers.
+- Prefer `ResponseObject` / `postFormObject` / `putFormObject` / `deleteObject` over hand-rolled `json.Unmarshal(responseField(...))` blocks — they exist for DRY, use them.
+- Domain split is by file, **not** by subpackage. Don't introduce `internal/` or `pkg/*` subpackages inside the library — it flattens the `*Client` call surface for a reason.
+- CLI commands follow **subject → verb** structure (`oo <subject> <verb>`), never `oo <verb>-<subject>`. Add new commands to the existing subject file if one fits; create a new `cmd/oo/<subject>.go` for a genuinely new domain.
+- Every table output goes through `printTable(headers, rows)`; every single-object through `printObject(v)`. Do not `fmt.Println` rows ad-hoc or the `--output json` flag breaks for that command.
+- No secrets in the repo; use `.env` (gitignored). Commit `.env.example` only.
+- Follow SemVer on tags; this repo is tagged at GitHub under `git@github.com:eSlider/go-onlyoffice.git`.
+
+### Testing policy (2026-04-24)
+
+**No synthetic OnlyOffice mockups.** Protocol-level behaviour must be
+verified against a real OnlyOffice instance. `httptest.NewServer` is only
+acceptable for testing the *caller's* logic that the library can't reach
+(for example, the user's own HTTP handler). Anywhere we would otherwise
+write `mux.HandleFunc("/api/2.0/...")` to emulate OnlyOffice, we write an
+**integration test** instead.
+
+- Unit tests (`*_test.go`, no build tag) — pure Go: parsers, encoders,
+  struct conversions. No network. No fake servers that emulate the vendor.
+- Integration tests (`//go:build integration` tag in `*_integration_test.go`)
+  — hit a live OnlyOffice instance. Credentials come from `ONLYOFFICE_URL`,
+  `ONLYOFFICE_USER`, `ONLYOFFICE_PASS` (aliases `_HOST`/`_NAME`/`_PASSWORD`
+  also accepted). Tests **skip** cleanly when credentials are missing so
+  `go test ./...` remains green in CI.
+- Run integration with: `go test -tags=integration ./...`.
+- New endpoints **must** ship with an integration test before merge.
+
+## Related
+
+- [`eSlider/inventar`](https://git.produktor.io/eSlider/inventar) — ASR/ADR (see ASR-0008 Go library module conventions).
+- [`eSlider/inventar-sync`](https://git.produktor.io/eSlider/inventar-sync) — OnlyOffice → Gitea issue sync, consumes this library.
+- [`produktor.io/vidarr`](https://git.produktor.io/produktor.io/vidarr) — legacy consumer being migrated from `pkg/onlyoffice` to this module.

CHANGELOG.md

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+# Changelog
+
+All notable changes to this project are documented here. The format is based on
+[Keep a Changelog](https://keepachangelog.com/en/1.1.0/), and this project
+adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
+
+## [0.6.0](https://github.com/eSlider/go-onlyoffice/compare/v0.5.0...v0.6.0) (2026-06-24)
+
+
+### Features
+
+* **office:** table detail panes and Alt+1/2/3 layout toggles ([934af21](https://github.com/eSlider/go-onlyoffice/commit/934af21bc93a54df9f40aacb4d89468b00d7562e))
+
+
+### Documentation
+
+* CHANGELOG for office v0.5.1 release ([2985070](https://github.com/eSlider/go-onlyoffice/commit/29850701f8c9ab0c6d6427f63eaa189a1c558140))
+
+## [0.5.0](https://github.com/eSlider/go-onlyoffice/compare/v0.4.0...v0.5.0) (2026-06-24)
+
+
+### Features
+
+* **office:** scrollable panes, nav tree drill-down, and item actions ([fe2ee48](https://github.com/eSlider/go-onlyoffice/commit/fe2ee481b9c0f959b798fd40679084a8c4bc4ba2))
+
+## [0.4.0](https://github.com/eSlider/go-onlyoffice/compare/v0.3.2...v0.4.0) (2026-06-24)
+
+
+### ⚠ BREAKING CHANGES
+
+* **cli:** subject-based command tree (tea-style) + global --output flag
+* rename oo-cli → oo, split library by domain, relocate applications
+
+### Features
+
+* **cli:** subject-based command tree (tea-style) + global --output flag ([1e6d22f](https://github.com/eSlider/go-onlyoffice/commit/1e6d22f38dd7a70d4cf1b69ef0b8749b01fded1a))
+* **crm:** dedupe duplicates, fix deal titles, and add cleanup CLI ([c77519f](https://github.com/eSlider/go-onlyoffice/commit/c77519fac5ae9dffaad3f1f0ae722d969e62dde9))
+* **crm:** merge company slogan variants in dedupe grouping ([3eb649c](https://github.com/eSlider/go-onlyoffice/commit/3eb649c58bf489b221f90734e04f33063f736914))
+* **files:** project/task Documents API + oo projects|tasks files ([e03fd62](https://github.com/eSlider/go-onlyoffice/commit/e03fd6220012c73b110f1e0b02a12971174eb290))
+* **mails:** add Workspace mail CLI with pagination and parsed from fields ([1cb228e](https://github.com/eSlider/go-onlyoffice/commit/1cb228e5d83ab453660bbace5f936a77f9381fc2))
+* **office:** add Workspace TUI with shared bootstrap and test suite ([7358ff5](https://github.com/eSlider/go-onlyoffice/commit/7358ff5c326cdc873cb68b3f96d31155ecba1ee3))
+
+
+### Code Refactoring
+
+* rename oo-cli → oo, split library by domain, relocate applications ([cff8145](https://github.com/eSlider/go-onlyoffice/commit/cff8145f8c35656a77b7a36338428bf9be0eda0f))
+
+
+### Documentation
+
+* CHANGELOG 0.6.0, README, AGENTS.md, cmd/oo/main.go tree. ([e03fd62](https://github.com/eSlider/go-onlyoffice/commit/e03fd6220012c73b110f1e0b02a12971174eb290))
+
+## [Unreleased]
+
+## [0.5.1] — 2026-06-24
+
+### Added — `office` TUI
+
+- **Alt+1 / Alt+2 / Alt+3** — show/hide left (nav), middle (table), and right (detail) panes.
+- Visible panes share **100% terminal width** evenly; pane content fills its column.
+- Tab focus skips hidden panes.
+
+### Changed — `office` TUI
+
+- Split detail pane: form/document top (~72%), CRUD action bar bottom.
+- Middle pane: multi-column table with sort, selection, and full-width columns.
+- Project list columns: ID, Title, Tasks (open/closed), Documents, Users.
+- Row selection auto-loads detail; files show document preview, entities show forms.
+
+## [0.6.0] - 2026-04-24
+
+### Added — library
+
+- **Project & task Documents API** in [`files.go`](files.go):
+  - `FileEntry`, `FolderEntry`, `ProjectFilesResponse` types.
+  - `GetProjectFiles`, `GetTaskFiles`, `GetFile`.
+  - `UploadProjectFile` — `POST /api/2.0/files/{folderId}/upload` into the
+    project's `projectFolder` (resolved via `GetProjectByID` or first folder
+    from `GetProjectFiles`).
+  - `AttachFilesToTask` — `POST .../project/task/{id}/files` with form
+    `files=<id>` (OnlyOffice expects **existing** file ids, not multipart).
+  - `UploadTaskFile` — uploads via `UploadProjectFile` using the task's
+    `projectOwner.id`, then attaches.
+  - `DetachTaskFile` — `DELETE .../files?fileid=`.
+  - `RenameFile` — `PUT /api/2.0/files/file/{id}.json` with JSON body.
+  - `DeleteFiles` — `PUT /api/2.0/files/fileops/delete.json` with `fileIds`.
+  - `DownloadFile` — `GetFile` then `GET` on `viewUrl` with `Authorization`.
+  - Helpers: `FileEntryNumericID`, `FileEntryTitle`, `SafeLocalFileName`.
+- **`putJSON`** on `*Client` in [`http.go`](http.go) for JSON PUT bodies.
+
+### Added — CLI
+
+- `oo projects files list|upload|download|rename|delete` — see
+  [`cmd/oo/projects_files.go`](cmd/oo/projects_files.go); `list` supports
+  `--folders`.
+- `oo tasks files list|upload|detach` — see [`cmd/oo/tasks_files.go`](cmd/oo/tasks_files.go).
+
+### Added — tests
+
+- [`files_integration_test.go`](files_integration_test.go) — live roundtrip
+  against OnlyOffice (same credential rules as `client_test.go`).
+- [`files_test.go`](files_test.go) + `testdata/*.json` — envelope decode unit
+  tests (no network).
+
+## [0.5.0] - 2026-04-24
+
+### Changed — CLI **BREAKING**
+
+- **Subject-based command tree** (`tea`-style). The flat `oo verb-noun`
+  layout is replaced with `oo <subject> <verb>`:
+
+  | Old | New |
+  |---|---|
+  | `oo cal-list` | `oo calendar list` |
+  | `oo cal-events` | `oo calendar events` |
+  | `oo cal-add` / `cal-delete` | `oo calendar add` / `calendar delete` |
+  | `oo task-list` | `oo tasks list` |
+  | `oo task-add` | `oo tasks create` |
+  | `oo task-update` | `oo tasks update` (deletion moved to `oo tasks delete`) |
+  | `oo subtask-add` | `oo tasks subtask add` |
+  | `oo crm-contacts` | `oo contacts list` (plus filtered `oo persons list` / `oo companies list`) |
+  | `oo crm-add-contact --company …` | `oo companies create --name …` |
+  | `oo crm-add-contact --person-first …` | `oo persons create --first …` |
+  | `oo crm-deals` | `oo opportunities list` |
+  | `oo crm-deals --stages` | `oo opportunities stages` |
+  | `oo crm-add-deal` | `oo opportunities create` |
+  | `oo crm-cases` | `oo cases list` |
+  | `oo applications-sync` | `oo applications sync` |
+
+- **New subjects**: `oo projects {list,get,milestones,create,update,delete}`,
+  `oo users {list,self}` (plus top-level `oo whoami`), `oo crm-tasks
+  {list,create,delete,categories}`, `oo cases {create,delete,member-add}`,
+  `oo contacts {get,info-add}`.
+
+- **Global `--output/-o` flag**: all list-like commands now support
+  `--output table` (default; tabwriter-aligned, truncated to 80 chars
+  per cell) and `--output json`. Nested `bidCurrency` flattened to its
+  `abbreviation` in the table view.
+
+- **Module aliases**: `oo calendar|cal`, `oo projects|prj`, `oo tasks|task`,
+  `oo persons|person`, `oo companies|company`, `oo opportunities|deals|deal`,
+  `oo cases|case`, `oo applications|apps`. `delete|rm` on every leaf that
+  removes things.
+
+### Added
+
+- `cmd/oo/common.go` — shared `printTable(headers, rows)` and
+  `printObject(v)` helpers that dispatch on the `--output` flag.
+- `cmd/oo/users.go` — exposes `oo users list`, `oo users self`, `oo whoami`
+  via the library's `GetUsers` + `SelfUserID`.
+- `cmd/oo/projects.go` — full CRUD for projects backed by `CreateProject`,
+  `UpdateProject`, `DeleteProject`, `GetProjectByID`, `GetProjectMilestones`.
+- `cmd/oo/crm_tasks.go` — dedicated `oo crm-tasks` subject (distinct from
+  project `oo tasks`).
+- `cmd/oo/contacts.go` — unified contacts/persons/companies with shared
+  list/filter implementation.
+
+### Changed — library (minor)
+
+- `newOO` in `cmd/oo/common.go` now calls `AuthenticateContext(cmd.Context())`
+  so CLI aborts propagate to the auth request.
+
+## [0.4.0] - 2026-04-24
+
+### Changed — project structure
+
+- **Library files reorganised by domain** (mechanical split; zero API surface
+  change). The former monolithic `onlyoffice.go` (687 LOC) is now split into:
+  - `client.go` — `Client`, `Credentials`, `Defaults`, env helpers, `NewClient`.
+  - `request.go` — `Request`, `Query`, `Time`, `Token`, `MetaResponse`,
+    `Permissions`, `requestBodyReader`.
+  - `auth.go` — `Authenticate`, `AuthenticateContext`, `InvalidateToken`,
+    `Auth`, `ensureToken`, `authHeader`, `tokenValid`.
+  - `http.go` — transport helpers and DRY response decoders
+    (`ResponseArray`, `ResponseObject`, `postFormObject`, `putFormObject`,
+    `deleteObject`, `unmarshalResponseObject`).
+  - `projects.go` — `Project`, `Projects`, `Milestone`, `ProjectOwner` +
+    `GetProjects` / `CreateProject` / `UpdateProject` / `DeleteProject` /
+    `GetProjectByID` / `GetProjectMilestones`.
+  - `tasks.go` — `Task`, `ProjectTaskStatus`, `TaskPriority`,
+    `ProjectGetTasksRequest` et al. **plus** the form-encoded helpers
+    formerly in `tasks_extra.go` (`ListTasks`, `AddTask`, `AddSubtask`,
+    `UpdateTaskStatus`, `DeleteTask`, `GetTaskByID`).
+  - `users.go` — `User`, `Contact`, `Group`, `GetUsers`, `SelfUserID`.
+  - `calendar.go`, `crm.go`, `files.go` — unchanged in scope, refactored
+    through the new DRY helpers.
+  - `httpx.go` → **renamed** `http.go`.
+  - `onlyoffice.go` and `tasks_extra.go` — **deleted** (content redistributed).
+
+### Changed — CLI **BREAKING**
+
+- **Binary renamed `oo-cli` → `oo`.** Install with
+  `go install github.com/eslider/go-onlyoffice/cmd/oo@latest`.
+- **Package path `cmd/oo-cli` → `cmd/oo`.** The old path is removed.
+- **`internal/cli` is gone.** Cobra commands now live directly under
+  `cmd/oo/` as `package main`, split by domain: `calendar.go`, `crm.go`,
+  `tasks.go`, `apps.go`, `common.go`. Rationale: cobra wiring is a CLI-only
+  concern and does not belong inside a `pkg-level internal/`.
+- **`internal/applications` → `cmd/oo/applications/`.** This is a
+  CV-specific CRM workflow — not a general OnlyOffice feature — and is only
+  consumed by the `oo` CLI. Keeping it under `cmd/oo/` prevents accidental
+  external adoption and makes the coupling explicit.
+- **`examples/applications/` removed.** It imported an internal package,
+  which was a policy smell. Remaining examples (`basic`, `calendar`, `crm`,
+  `subtasks`) use only the exported library surface.
+
+### Added
+
+- `(*Client).ResponseObject` — GET-and-decode-object counterpart to the
+  existing `ResponseArray`.
+- `(*Client).postFormObject` / `putFormObject` / `deleteObject` — eliminate
+  the ~15 identical "form request → `responseField` → `json.Unmarshal`"
+  blocks previously duplicated across `crm.go` / `tasks_extra.go` /
+  `calendar.go` / `files.go`.
+
+### Migration
+
+External library consumers: **no changes required**. The module path
+(`github.com/eslider/go-onlyoffice`), the `onlyoffice` package name, and
+every exported symbol are unchanged.
+
+CLI users: replace `oo-cli` with `oo` in scripts and CI. The command set
+and flags are identical.
+
+## [0.3.2] - 2026-04-24
+
+### Fixed
+
+- `Project.String()` no longer interprets the title as a format string
+  (`fmt.Sprintf(*p.Title)`) and is now nil-safe on a zero-value `Project`.
+- `internal/applications.buildSummary` no longer panics at regex compile time
+  on Go 1.23+ — the previous `(?= ...)` lookahead is replaced with an RE2-safe
+  non-capturing trailing delimiter.
+
+### Changed
+
+- `Client.Query` now routes token acquisition through the shared
+  `ensureToken` path instead of duplicating the auth-expiry check inline.
+- Request body marshalling is consolidated into an unexported
+  `requestBodyReader` helper (DRY; no change to the public surface).
+- The `Request.Debug` field is preserved for backwards compatibility but no
+  longer changes behaviour — both branches used to unmarshal into the same
+  target value. We'll remove the field in a future major release.
+
+### Tests
+
+- Deleted `httptest.NewServer` fixtures that emulated OnlyOffice protocol
+  endpoints. Replaced them with:
+  - pure-Go unit tests in `unit_test.go` (no network);
+  - real integration tests in `client_test.go` guarded by
+    `//go:build integration`. Run with
+    `go test -tags=integration ./...`. Tests skip cleanly when
+    `ONLYOFFICE_URL/USER/PASS` (or aliases) are absent.
+- New policy documented in `AGENTS.md` and
+  `.cursor/rules/no-synthetic-mocks.mdc`.
+
+## [0.3.1] - 2026-04-24
+
+### Added
+
+- `AuthenticateContext(ctx)` — context-aware auth that honours cancellation and
+  deadlines. Preferred entry point for long-running syncs (cron, watchers).
+- `InvalidateToken()` — clears the cached token to force re-auth on the next
+  request. Use this to recover from a mid-sync 401 when the server has revoked
+  the session while the local `Expires` timestamp still looks fresh.
+
+### Notes
+
+- Plain `Authenticate()` is unchanged and remains a convenience wrapper around
+  `AuthenticateContext(context.Background())`.
+- No breaking changes; a patch release.
+
+## [0.3.0] - 2026-04-24
+
+### Added
+
+- Calendar helpers: `ListCalendars`, `ListEvents`, `AddEvent`, `DeleteEvent`.
+- CRM helpers: contacts (`ListContacts`, `GetContact`, `FindCompany`, `FindPerson`,
+  `CreateCompany`, `CreatePerson`, `AddContactInfo`, `DeleteContact`), deals
+  (`ListOpportunities`, `GetOpportunity`, `CreateOpportunity`,
+  `AddOpportunityMember`, `ListDealStages`, `DeleteOpportunity`), cases
+  (`ListCases`, `CreateCase`, `AddCaseMember`, `DeleteCase`), CRM tasks
+  (`ListCRMTasks`, `CreateCRMTask`, `DeleteCRMTask`, `ListTaskCategories`), and
+  history notes (`AddHistoryNote`).
+- Project task extras: `GetProjectByID`, `ListTasks`, `ListAllTasks`,
+  `GetTaskByID`, `AddTask`, `AddSubtask`, `UpdateTaskStatus`, `DeleteTask`.
+- File upload: `UploadOpportunityFile` (multipart).
+- `SelfUserID` cached lookup of `people/@self`.
+- `Defaults` struct + `SetDefaults` + `GetEnvironmentDefaults` for optional
+  calendar/project fallbacks.
+- Alias env vars accepted by `GetEnvironmentCredentials`:
+  `ONLYOFFICE_HOST` / `ONLYOFFICE_NAME` / `ONLYOFFICE_PASSWORD`.
+- Public `Authenticate()` that primes the token eagerly.
+- Bundled CLI: `cmd/oo-cli` (Cobra) with commands `cal-list`, `cal-events`,
+  `cal-add`, `cal-delete`, `task-list`, `task-add`, `subtask-add`,
+  `task-update`, `crm-contacts`, `crm-add-contact`, `crm-deals`,
+  `crm-add-deal`, `crm-cases`, `applications-sync`.
+- httptest-based unit tests for form / multipart / CRM helpers.
+
+### Changed
+
+- The `onlyoffice.Client` struct gained unexported fields (`defaults`, `selfID`,
+  `noteCatID`); the public API is unchanged and remains backwards compatible.
+
+## [0.2.0] - earlier
+
+- Badges, docs expansion (Gitea sync use case, Gantt/PM workflows).
+
+## [0.1.0] - earlier
+
+- Initial release: OnlyOffice Project Management API client.

README.md

@@ -1,5 +1,12 @@
 # go-onlyoffice
 
+[![Go Reference](https://pkg.go.dev/badge/github.com/eslider/go-onlyoffice.svg)](https://pkg.go.dev/github.com/eslider/go-onlyoffice)
+[![License: MIT](https://img.shields.io/badge/License-MIT-yellow.svg)](https://opensource.org/licenses/MIT)
+[![Go](https://img.shields.io/badge/Go-1.22+-00ADD8.svg)](https://go.dev)
+[![Tests](https://github.com/eSlider/go-onlyoffice/actions/workflows/test.yml/badge.svg)](https://github.com/eSlider/go-onlyoffice/actions/workflows/test.yml)
+[![Latest Release](https://img.shields.io/github/v/tag/eSlider/go-onlyoffice?sort=semver&label=release)](https://github.com/eSlider/go-onlyoffice/releases)
+[![GitHub Stars](https://img.shields.io/github/stars/eSlider/go-onlyoffice?style=social)](https://github.com/eSlider/go-onlyoffice/stargazers)
+
 Go client library for the [OnlyOffice](https://www.onlyoffice.com/) Project Management API — manage projects, tasks, subtasks, milestones, and users programmatically.
 
 Pairs with [go-gitea-helpers](https://github.com/eSlider/go-gitea-helpers) to bridge developer issue trackers with CRM-grade project management for Gantt charts, resource planning, and executive reporting.
@@ -504,19 +511,382 @@ type Task struct {
 | `Time` | `time.Time` wrapper with OnlyOffice JSON format |
 | `Task.GetGiteaIssueLink()` | Extract Gitea URL from task description |
 
+### Calendar, CRM, Subtasks, File upload (v0.2+)
+
+Since v0.2 the library also exposes OnlyOffice Workspace surfaces beyond
+Projects: Calendar events, CRM (Contacts, Companies, Opportunities, Cases,
+Tasks, History notes) and opportunity file uploads. These helpers return
+untyped `map[string]any` for flexibility; callers that need typed structs
+should use the typed Project/Task API above.
+
+```go
+client := onlyoffice.NewClient(onlyoffice.GetEnvironmentCredentials())
+client.SetDefaults(onlyoffice.GetEnvironmentDefaults()) // optional
+ctx := context.Background()
+
+// Calendar
+events, _ := client.ListEvents(ctx, "2025-01-01", "2025-12-31")
+client.AddEvent(ctx, "", "Interview", "2025-06-10T10:00:00Z", "2025-06-10T11:00:00Z", "", false)
+
+// CRM
+deals, total, _ := client.ListOpportunities(ctx, 50, 0)
+company, _ := client.FindCompany(ctx, "ACME")
+
+// Subtasks (form-encoded)
+client.AddSubtask(ctx, "4242", "Prepare CV")
+```
+
+### oo (bundled CLI)
+
+A ready-to-use [Cobra](https://github.com/spf13/cobra) CLI wrapping the
+library lives under [`cmd/oo`](cmd/oo/). The command tree is **subject-based**,
+mirroring the [`tea`](https://gitea.com/gitea/tea) CLI:
+
+```bash
+go install github.com/eslider/go-onlyoffice/cmd/oo@latest
+
+# Global: every list-style command takes -o table|json (default: table)
+oo whoami
+oo users list
+oo calendar events --start 2026-04-24 --end 2026-05-01
+oo projects list
+oo projects get 33
+oo tasks list --all --verbose
+oo tasks subtask add 4242 "Prepare CV"
+oo persons create --first Jane --last Doe --email jane@example.com
+oo companies create --name "Acme GmbH" --website https://acme.com
+oo opportunities list
+oo opportunities stages
+oo cases list
+oo crm-tasks categories
+oo applications sync --path ./applications/2026 --apply
+```
+
+### office (TUI)
+
+Terminal UI for browsing OnlyOffice Workspace — module tree (left), selectable
+lists (center), and markdown preview (right). Uses the same `.env` credentials
+as `oo`. Lives under [`cmd/office`](cmd/office/).
+
+```bash
+go install github.com/eslider/go-onlyoffice/cmd/office@latest
+office
+```
+
+| Key | Action |
+|---|---|
+| `Tab` | Next pane (menu → list → preview) |
+| `Shift+Tab` | Previous pane |
+| `↑↓` / `j` / `k` | Navigate / scroll within focused pane |
+| `Enter` / `→` | Expand tree branch or open leaf list |
+| `Space` | Toggle multi-select on list row |
+| `Enter` / `a` | Action menu (view, delete, download, …) |
+| `r` | Refresh current list |
+| `q` | Quit |
+
+Navigate the **tree** on the left: expand modules (`▸`/`▾`), drill to a **leaf** (marked `•`) — the center list loads only at the last level. Under **Projects → By project**, live projects appear as subnodes with **Tasks** and **Files** leaves.
+
+Optional env for DOCX preview via Document Server (see [`.env.example`](.env.example)):
+
+```bash
+ONLYOFFICE_DOCS_URL=https://docs.example.com
+ONLYOFFICE_DOCS_SECRET=…   # when JWT signing is enabled
+```
+
+Spreadsheet files: inline CSV/JSON preview in the right pane; install
+[`vex`](https://github.com/CodeOne45/vex-tui) on `PATH` for full-screen
+xlsx/csv viewing (`v` on a file row — coming in next iteration).
+
+Integration tests for list loaders and preview (live API only — no mocks):
+
+```bash
+go test -tags=integration ./cmd/office/fetch/... ./cmd/office/preview/...
+```
+
+**Project / task documents (`oo`):**
+
+```bash
+# Project Documents (files module)
+oo projects files list 33
+oo projects files upload 33 ./notes.md
+oo projects files download 12345 --to ./copy.md
+oo projects files rename 12345 notes-v2.md
+oo projects files delete 12345
+oo tasks files list 208
+oo tasks files upload 208 ./cv.pdf
+oo tasks files detach 208 12345
+```
+
+| Subject | Verbs |
+|---|---|
+| `calendar` | `list`, `events`, `add`, `delete` |
+| `projects` | `list`, `get`, `milestones`, `create`, `update`, `delete`, **`files`** (`list`, `upload`, `download`, `rename`, `delete`) |
+| `tasks` | `list`, `get`, `create`, `update`, `delete`, `subtask add`, **`files`** (`list`, `upload`, `detach`) |
+| `users` | `list`, `self` (alias: `oo whoami`) |
+| `contacts` | `list`, `get`, `delete`, `info-add` |
+| `persons` | `list` (filtered), `create`, `delete` |
+| `companies` | `list` (filtered), `create`, `delete` |
+| `contacts` | `list`, `get`, `delete`, `info-add`, `dedupe-info` |
+| `persons` | `list`, `create`, `delete`, `dedupe` |
+| `companies` | `list`, `create`, `delete`, `dedupe`, `dedupe-persons` |
+| `opportunities` | `list`, `get`, `create`, `delete`, `stages`, `member-add`, `dedupe`, `dedupe-members`, `fix-titles` |
+| `crm` | `cleanup` |
+| `mails` | `accounts`, `folders`, `list`, `get`, `delete` |
+| `cases` | `list`, `create`, `delete`, `member-add` |
+| `crm-tasks` | `list`, `create`, `delete`, `categories` |
+| `applications` | `sync` |
+
+The CLI reads only `.env` from the current working directory (godotenv is a
+CLI-only concern — the library itself never loads dotfiles).
+
+Canonical `ONLYOFFICE_*` variables win over aliases. For produktor.io operator
+files, `OO_URL` / `OO_USER` / `OO_PASS` are accepted as CLI-only aliases for
+`ONLYOFFICE_URL` / `ONLYOFFICE_USER` / `ONLYOFFICE_PASS`.
+
+Run `oo --help` or `oo <subject> --help` for the full command reference.
+
+> **0.5.0 migration note:** the command tree was flattened per-subject. Old
+> flat names (`oo cal-events`, `oo task-list`, `oo crm-contacts`,
+> `oo applications-sync`, …) were replaced by subject-based equivalents
+> (`oo calendar events`, `oo tasks list`, `oo contacts list`,
+> `oo applications sync`). Flags on leaf commands are unchanged.
+
+## oo CLI use cases
+
+The `oo` binary is the day-to-day operator interface. It loads credentials from
+`.env` in the **current working directory** (copy from [`.env.example`](.env.example)):
+
+```bash
+cp .env.example .env
+# ONLYOFFICE_URL=https://office.example.com
+# ONLYOFFICE_USER=you@example.com
+# ONLYOFFICE_PASS=…
+
+go install github.com/eslider/go-onlyoffice/cmd/oo@latest
+oo whoami
+```
+
+Every list command accepts `-o table` (default) or `-o json` for scripting.
+
+### CRM cleanup after imports or sync drift
+
+**Problem:** Duplicate companies (`Acme` / `ACME GmbH`), persons created twice,
+the same email on a contact three times, deals titled ` @ contoso`, or the same
+HR contact linked to a deal twice.
+
+**One-shot fix** — runs every dedupe pass in order:
+
+```bash
+oo crm cleanup -o json
+```
+
+Steps inside `crm cleanup`:
+
+| Step | What it does |
+|------|----------------|
+| `companies` | Merge companies with the same normalized name (slogan variants like `Affirm` / `Affirm — Fraud Engineering` count as one) |
+| `persons` | Merge duplicate persons globally (same first+last) |
+| `company-persons` | Merge duplicate persons under each company |
+| `contact-info` | Remove duplicate email/phone/website rows |
+| `opportunity-members` | Drop duplicate contacts on the same deal |
+| `opportunities` | Merge duplicate deals by title |
+| `fix-titles` | Repair malformed titles (` @ Company` → `Company`) |
+
+**Targeted passes** when you only want one kind of fix:
+
+```bash
+# Duplicate company records
+oo companies dedupe
+
+# Same person entered twice under one employer
+oo companies dedupe-persons
+
+# Global person duplicates (same name, different ids)
+oo persons dedupe
+
+# Repeated email/phone rows on contacts
+oo contacts dedupe-info
+
+# Two deals with the same title
+oo opportunities dedupe
+
+# Same contact attached twice to one deal (common after applications sync)
+oo opportunities dedupe-members
+
+# Titles like " @ contoso" or extra whitespace
+oo opportunities fix-titles
+```
+
+**Deal grouping flag** — when the same role at the same company created
+separate deals (`Engineer @ Acme` vs `Engineer`):
+
+```bash
+oo opportunities dedupe --ignore-company-suffix
+oo crm cleanup --ignore-company-suffix
+```
+
+**Inspect before/after:**
+
+```bash
+oo opportunities list --count 200 | grep -i contoso
+oo contacts get 857 -o json
+oo crm cleanup -o json
+```
+
+### Job applications → CRM (`applications sync`)
+
+**Problem:** You keep CVs in a folder tree (`applications/2026/Acme/README.md`)
+and want companies, persons, deals, and history notes in OnlyOffice without
+re-typing.
+
+**Dry-run first** (default — prints what would happen, writes nothing):
+
+```bash
+oo applications sync --path ./applications/2026 --verbose
+```
+
+**Apply** when the preview looks right:
+
+```bash
+oo applications sync --path ./applications/2026 --apply --verbose
+```
+
+Each `README.md` is parsed for company, role, email, phone, LinkedIn, etc.
+The sync creates or finds contacts, opens a deal, adds members, and appends a
+history note. Re-running is safe: duplicate members and duplicate deal titles
+are skipped when already present.
+
+**After a large sync**, run CRM cleanup to collapse duplicates introduced by
+repeated runs or manual edits:
+
+```bash
+oo applications sync --path ./applications/2026 --apply
+oo crm cleanup -o json
+```
+
+### Workspace mail (`oo mails`)
+
+**Problem:** Mail lives in OnlyOffice Mail (`/addons/mail/#inbox`), bound to your
+portal account — not a separate archive service. You want to list, read, or
+remove messages from the shell.
+
+Uses the same `ONLYOFFICE_*` credentials as every other `oo` command.
+
+```bash
+# Which mailbox is linked?
+oo mails accounts
+
+# Folder counters (inbox unread, trash size, …)
+oo mails folders
+
+# Latest inbox messages (API returns 25 per page; --limit paginates automatically)
+oo mails list --folder inbox --limit 50
+
+# Page through older mail
+oo mails list --folder inbox --limit 100 --offset 100
+
+# Other folders
+oo mails list --folder sent --limit 20
+oo mails list --folder spam --limit 100
+
+# Read full message (subject, htmlBody, attachments metadata)
+oo mails get 5664 -o json | jq '{subject, from, to, date}'
+
+# Remove one or more messages (server moves to trash or deletes per Mail rules)
+oo mails delete 5664
+oo mails delete 5664 5663 5661
+```
+
+**Table output** splits the `from` header into `fromName` and `fromAddress`
+(e.g. `Bitfinex` + `no-reply@bitfinex.com`). **JSON output** returns the raw
+API payload.
+
+**Scripting example** — export today's inbox subjects:
+
+```bash
+oo mails list --folder inbox --limit 200 -o json \
+  | jq -r '.[] | "\(.id)\t\(.subject)"'
+```
+
+### Contacts, companies, and deals (everyday CRM)
+
+```bash
+# Search companies
+oo companies list --search acme
+
+# Create company + person with primary email
+oo companies create --name "Acme GmbH" --website https://acme.com
+oo persons create --first Jane --last Doe --email jane@acme.com --company-id 42
+
+# Attach email or LinkedIn to existing contact
+oo contacts info-add 42 --type Email --value jane@acme.com --primary
+
+# Pipeline overview
+oo opportunities list --count 100
+oo opportunities stages
+oo opportunities get 231 -o json
+```
+
+### Calendar and project ops
+
+```bash
+# Next week's events
+oo calendar events --start 2026-06-24 --end 2026-07-01
+
+# Schedule interview block
+oo calendar add "Technical interview" 2026-06-26T10:00:00Z 2026-06-26T11:00:00Z
+
+# Attach CV to a hiring task
+oo tasks files upload 208 ./cv.pdf
+oo projects files list 33
+```
+
+### Suggested maintenance cadence
+
+| When | Command |
+|------|---------|
+| After `applications sync --apply` | `oo crm cleanup` |
+| After bulk CSV import into CRM | `oo crm cleanup` |
+| Weekly inbox triage | `oo mails list --folder inbox --limit 100` |
+| Before exec reporting | `oo opportunities list` + `oo projects list` |
+
 ## Environment Variables
 
 | Variable | Description |
 |---|---|
-| `ONLYOFFICE_URL` | OnlyOffice instance URL |
-| `ONLYOFFICE_USER` | Login email or username |
-| `ONLYOFFICE_PASS` | Password |
+| `ONLYOFFICE_URL` (or `ONLYOFFICE_HOST`) | OnlyOffice instance URL |
+| `ONLYOFFICE_USER` (or `ONLYOFFICE_NAME`) | Login email or username |
+| `ONLYOFFICE_PASS` (or `ONLYOFFICE_PASSWORD`) | Password |
+| `ONLYOFFICE_CALENDAR_ID` | Default calendar id used when omitted (default `1`) |
+| `ONLYOFFICE_PROJECT_ID` | Default project id used when omitted (default `33`) |
+| `OO_URL`, `OO_USER`, `OO_PASS` | CLI-only produktor.io aliases mapped to `ONLYOFFICE_URL`, `ONLYOFFICE_USER`, `ONLYOFFICE_PASS` |
+
+Mail, CRM cleanup, and applications sync are documented in [oo CLI use cases](#oo-cli-use-cases) above.
+
+### CI / releases
+
+GitHub Actions (pattern from [`eSlider/go-config`](https://github.com/eSlider/go-config)):
+
+| Workflow | Trigger | Purpose |
+|---|---|---|
+| `test.yml` | push / PR | `go vet`, unit tests, build `oo` + `office` |
+| `release-please.yml` | push to `main` | semver PR from conventional commits |
+| `release.yml` | tag `v*` | GoReleaser cross-platform `oo` + `office` binaries |
+
+Repo setting required once: **Settings → Actions → General → Allow GitHub Actions to create and approve pull requests**.
+
+Merge the release-please PR to tag a version; GoReleaser publishes assets to [GitHub Releases](https://github.com/eSlider/go-onlyoffice/releases).
 
 ## Examples
 
 | Example | Description |
 |---|---|
 | [basic](examples/basic/) | List projects and users |
+| [calendar](examples/calendar/) | List calendars and events, create a new event |
+| [crm](examples/crm/) | List contacts and opportunities, add company/deal/history note |
+| [subtasks](examples/subtasks/) | Create a parent task and attach subtasks |
+| [`cmd/oo`](cmd/oo/) | Full-featured CLI using all modules |
+| [`cmd/office`](cmd/office/) | Terminal UI — browse Workspace with markdown preview |
 
 ## Related Libraries
 

auth.go

@@ -0,0 +1,121 @@
+package onlyoffice
+
+// Authentication primitives: token lifecycle, eager / context-aware auth, and
+// token invalidation. Split out of http.go so auth concerns live together.
+
+import (
+	"bytes"
+	"context"
+	"encoding/json"
+	"fmt"
+	"io"
+	"net/http"
+	"time"
+)
+
+// Auth authenticates using the given credentials and returns a fresh token.
+// Most callers should not call this directly — use Authenticate /
+// AuthenticateContext, or let Query fetch a token lazily. Kept exported for
+// backwards compatibility.
+func (c *Client) Auth(creds *Credentials) (*Token, error) {
+	t := &Token{}
+	return t, c.Query(Request{
+		Uri:    "/api/2.0/authentication.json",
+		Method: http.MethodPost,
+		Body:   creds,
+		NoAuth: true,
+	}, &struct {
+		MetaResponse `json:",inline"`
+		Response     *Token `json:"response"`
+	}{
+		Response: t,
+	})
+}
+
+// Authenticate validates credentials and primes the token. Library users may
+// call this eagerly to surface auth errors at startup; otherwise the token
+// is fetched lazily on the first request.
+//
+// Prefer AuthenticateContext in long-running jobs — it honours cancellation.
+func (c *Client) Authenticate() error { return c.ensureToken() }
+
+// AuthenticateContext is the context-aware variant of Authenticate. If the
+// cached token is still valid it returns immediately; otherwise it performs
+// a POST to /api/2.0/authentication.json that is cancellable via ctx.
+//
+// This is the recommended entry point for long-running syncs (cron,
+// watchers) because it guarantees that a stalled auth call will not block
+// the caller past its deadline.
+func (c *Client) AuthenticateContext(ctx context.Context) error {
+	if c.tokenValid() {
+		return nil
+	}
+	body, err := json.Marshal(c.credentials)
+	if err != nil {
+		return fmt.Errorf("marshal credentials: %w", err)
+	}
+	req, err := http.NewRequestWithContext(ctx, http.MethodPost, c.baseURL()+"/api/2.0/authentication.json", bytes.NewReader(body))
+	if err != nil {
+		return err
+	}
+	req.Header.Set("Content-Type", "application/json")
+	req.Header.Set("Accept", "application/json")
+	resp, err := c.client.Do(req)
+	if err != nil {
+		return fmt.Errorf("auth request: %w", err)
+	}
+	defer resp.Body.Close()
+	raw, err := io.ReadAll(resp.Body)
+	if err != nil {
+		return err
+	}
+	if resp.StatusCode >= 400 {
+		return fmt.Errorf("auth: %d %s", resp.StatusCode, truncate(string(raw), 400))
+	}
+	var env struct {
+		Response *Token `json:"response"`
+	}
+	if err := json.Unmarshal(raw, &env); err != nil {
+		return fmt.Errorf("auth decode: %w", err)
+	}
+	if env.Response == nil || env.Response.Value == "" {
+		return fmt.Errorf("auth: empty token in response")
+	}
+	c.token = env.Response
+	return nil
+}
+
+// InvalidateToken clears the cached authentication token. The next request
+// (or call to Authenticate / AuthenticateContext) will re-authenticate.
+//
+// Use this to recover from a mid-sync 401 when the server has revoked or
+// rotated the session while the Expires timestamp still looks fresh locally.
+func (c *Client) InvalidateToken() { c.token = nil }
+
+// tokenValid reports whether the cached token is present and not expired.
+func (c *Client) tokenValid() bool {
+	return c.token != nil && !time.Time(c.token.Expires).Before(time.Now())
+}
+
+// ensureToken refreshes the authentication token when missing or expired.
+// Mirrors the logic inline in Query() but is safe to call from helpers that
+// bypass the typed Request abstraction.
+func (c *Client) ensureToken() error {
+	if c.tokenValid() {
+		return nil
+	}
+	tok, err := c.Auth(c.credentials)
+	if err != nil {
+		return err
+	}
+	c.token = tok
+	return nil
+}
+
+// authHeader returns the value for the Authorization header, ensuring a token.
+func (c *Client) authHeader() (string, error) {
+	if err := c.ensureToken(); err != nil {
+		return "", err
+	}
+	return c.token.Value, nil
+}

calendar.go

@@ -0,0 +1,72 @@
+package onlyoffice
+
+import (
+	"context"
+	"encoding/json"
+	"fmt"
+	"net/url"
+	"strconv"
+)
+
+// ListCalendars returns calendars/events for the given date span (YYYY-MM-DD).
+// Empty start/end fall back to a wide default window (2020-01-01..2030-12-31),
+// matching the Python reference implementation.
+func (c *Client) ListCalendars(ctx context.Context, start, end string) ([]map[string]any, error) {
+	if start == "" {
+		start = "2020-01-01"
+	}
+	if end == "" {
+		end = "2030-12-31"
+	}
+	path := fmt.Sprintf("/api/2.0/calendar/calendars/%s/%s.json", url.PathEscape(start), url.PathEscape(end))
+	return c.ResponseArray(ctx, path)
+}
+
+// ListEvents is an alias for ListCalendars; retained for the Python-port CLI.
+func (c *Client) ListEvents(ctx context.Context, start, end string) ([]map[string]any, error) {
+	return c.ListCalendars(ctx, start, end)
+}
+
+// AddEvent creates a simple one-shot calendar event. When calendarID is empty
+// the configured default (SetDefaults or GetEnvironmentDefaults) is used.
+// Start/end timestamps are forwarded verbatim (OnlyOffice accepts ISO 8601).
+//
+// The underlying API returns an array wrapper — this helper unwraps the first
+// element for convenience.
+func (c *Client) AddEvent(ctx context.Context, calendarID, title, start, end, description string, allDay bool) (map[string]any, error) {
+	if calendarID == "" {
+		calendarID = c.defaults.CalendarID
+	}
+	if calendarID == "" {
+		return nil, fmt.Errorf("AddEvent: calendarID is required (pass explicitly or set via SetDefaults)")
+	}
+	fields := url.Values{}
+	fields.Set("name", title)
+	fields.Set("description", description)
+	fields.Set("startDate", start)
+	fields.Set("endDate", end)
+	fields.Set("repeatType", "")
+	fields.Set("alertType", "0")
+	fields.Set("isAllDayLong", strconv.FormatBool(allDay))
+	raw, err := c.postForm(ctx, fmt.Sprintf("/api/2.0/calendar/%s/event.json", url.PathEscape(calendarID)), fields)
+	if err != nil {
+		return nil, err
+	}
+	resp, err := responseField(raw, "response")
+	if err != nil {
+		return nil, err
+	}
+	var arr []map[string]any
+	if err := json.Unmarshal(resp, &arr); err != nil {
+		return nil, err
+	}
+	if len(arr) == 0 {
+		return nil, fmt.Errorf("AddEvent: empty response")
+	}
+	return arr[0], nil
+}
+
+// DeleteEvent removes a single calendar event by its event ID.
+func (c *Client) DeleteEvent(ctx context.Context, eventID string) (map[string]any, error) {
+	return c.deleteObject(ctx, fmt.Sprintf("/api/2.0/calendar/events/%s.json", url.PathEscape(eventID)))
+}

client.go

@@ -0,0 +1,108 @@
+// Package onlyoffice provides a Go client for the OnlyOffice Workspace
+// (formerly ONLYOFFICE) REST API. It is organised as a flat single package
+// intentionally: a single *Client exposes Projects, Tasks, Calendar, CRM and
+// Files operations as receiver methods. Domain split is by file, not by
+// subpackage, to keep call sites uniform (c.ListContacts, c.GetTasks,
+// c.AddEvent, c.UploadOpportunityFile all live on the same handle).
+//
+// The CLI binary `oo` (see cmd/oo) is a thin cobra wrapper on top of this
+// library and mirrors the Python cv/bin/office reference tooling.
+package onlyoffice
+
+import (
+	"net/http"
+	"os"
+	"strings"
+)
+
+// Client of OnlyOffice API uses credentials to get a token and query the API
+// by every request.
+//
+// Construct with NewClient; optionally set fallbacks via SetDefaults. The
+// zero value is NOT usable — credentials are required. A single client is
+// safe for sequential use from one goroutine; for concurrent use, callers
+// should wrap with their own synchronization or create one client per
+// goroutine.
+type Client struct {
+	client      *http.Client
+	credentials *Credentials
+	token       *Token
+
+	defaults  Defaults // optional fallbacks for calendar/project IDs
+	selfID    string   // cached /api/2.0/people/@self id
+	noteCatID int      // cached CRM history category id for "note"
+}
+
+// NewClient returns a new Client backed by http.DefaultClient.
+func NewClient(c Credentials) *Client {
+	return &Client{
+		client:      http.DefaultClient,
+		credentials: &c,
+	}
+}
+
+// Credentials of OnlyOffice User. The Url field is NOT sent with the auth
+// payload — it only determines the host.
+type Credentials struct {
+	Url      string `json:"-"`
+	User     string `json:"userName"`
+	Password string `json:"password"`
+}
+
+// Defaults holds optional fallbacks used by package-level helpers when callers
+// pass an empty identifier (calendar or project). Set via (*Client).SetDefaults
+// or read from env via GetEnvironmentDefaults.
+type Defaults struct {
+	CalendarID string
+	ProjectID  string
+}
+
+// SetDefaults configures optional identifiers used as fallbacks by methods
+// such as AddEvent (when calendarID == "") or AddTask (when projectID == "").
+func (c *Client) SetDefaults(d Defaults) { c.defaults = d }
+
+// GetEnvironmentCredentials reads OnlyOffice credentials from environment.
+//
+// Primary variables (documented):
+//   - ONLYOFFICE_URL
+//   - ONLYOFFICE_USER
+//   - ONLYOFFICE_PASS
+//
+// Additional aliases accepted for interoperability with sibling tools:
+//   - ONLYOFFICE_HOST        (alias for ONLYOFFICE_URL)
+//   - ONLYOFFICE_NAME        (alias for ONLYOFFICE_USER)
+//   - ONLYOFFICE_PASSWORD    (alias for ONLYOFFICE_PASS)
+func GetEnvironmentCredentials() Credentials {
+	url := firstNonEmpty(os.Getenv("ONLYOFFICE_URL"), os.Getenv("ONLYOFFICE_HOST"))
+	url = strings.TrimRight(url, "/")
+	return Credentials{
+		Url:      url,
+		User:     firstNonEmpty(os.Getenv("ONLYOFFICE_USER"), os.Getenv("ONLYOFFICE_NAME")),
+		Password: firstNonEmpty(os.Getenv("ONLYOFFICE_PASS"), os.Getenv("ONLYOFFICE_PASSWORD")),
+	}
+}
+
+// GetEnvironmentDefaults reads optional library defaults from environment:
+//
+//   - ONLYOFFICE_CALENDAR_ID (default: "1")
+//   - ONLYOFFICE_PROJECT_ID  (alias: ONLYOFFICE_CALENDAR_PROJECT_ID; default: "33")
+func GetEnvironmentDefaults() Defaults {
+	return Defaults{
+		CalendarID: firstNonEmpty(os.Getenv("ONLYOFFICE_CALENDAR_ID"), "1"),
+		ProjectID: firstNonEmpty(
+			os.Getenv("ONLYOFFICE_PROJECT_ID"),
+			os.Getenv("ONLYOFFICE_CALENDAR_PROJECT_ID"),
+			"33",
+		),
+	}
+}
+
+// firstNonEmpty returns the first non-empty trimmed value, or "" if none.
+func firstNonEmpty(vals ...string) string {
+	for _, v := range vals {
+		if s := strings.TrimSpace(v); s != "" {
+			return s
+		}
+	}
+	return ""
+}

client_test.go

@@ -1,128 +1,220 @@
+//go:build integration
+
 package onlyoffice
 
+// Integration tests — hit a live OnlyOffice Workspace instance. Credentials
+// come from ONLYOFFICE_URL / ONLYOFFICE_USER / ONLYOFFICE_PASS (aliases
+// _HOST / _NAME / _PASSWORD also accepted). Without credentials every test
+// here skips.
+//
+// Run with:
+//
+//	go test -tags=integration ./...
+//
+// These tests are destructive on the target instance. They create projects
+// with titles prefixed "go-onlyoffice-test-" and clean up afterwards. Do not
+// run against an instance you don't own.
+
 import (
-	"os"
+	"context"
+	"strconv"
 	"strings"
 	"testing"
 	"time"
-
-	"github.com/joho/godotenv"
 )
 
-// Load environment variables
-func init() {
-	// Load from .env file in the project root
-	_ = godotenv.Load(".env")
-}
-
-func skipWithoutCredentials(t *testing.T) {
+func skipWithoutCredentials(t *testing.T) Credentials {
 	t.Helper()
-	if os.Getenv("ONLYOFFICE_URL") == "" {
-		t.Skip("ONLYOFFICE_URL is not set, skipping integration test")
+	c := GetEnvironmentCredentials()
+	if c.Url == "" || c.User == "" || c.Password == "" {
+		t.Skip("ONLYOFFICE_URL/USER/PASS not set — skipping integration test")
 	}
+	return c
 }
 
-func TestNewClient(t *testing.T) {
-	skipWithoutCredentials(t)
+func liveClient(t *testing.T) *Client {
+	t.Helper()
+	c := NewClient(skipWithoutCredentials(t))
+	c.SetDefaults(GetEnvironmentDefaults())
+	return c
+}
 
-	// Create a new OnlyOffice client
-	credentials := GetEnvironmentCredentials()
-	client := NewClient(credentials)
-	var token *Token
-	var err error
-	token, err = client.Auth(&credentials)
+const testProjectPrefix = "go-onlyoffice-test-"
 
+func cleanupTestProjects(t *testing.T, c *Client) {
+	t.Helper()
+	projects, err := c.GetProjects()
 	if err != nil {
-		t.Errorf("Failed to get token: %v", err)
+		t.Logf("cleanup: GetProjects: %v", err)
+		return
+	}
+	for _, p := range projects {
+		if p.Title != nil && strings.HasPrefix(*p.Title, testProjectPrefix) {
+			if _, err := c.DeleteProject(*p.ID); err != nil {
+				t.Logf("cleanup: DeleteProject %d: %v", *p.ID, err)
+			}
+		}
 	}
-	if token == nil {
-		t.Error("Value is empty")
 }
 
-	// Clean up: remove all projects start with "Test project"
-	projects, err := client.GetProjects()
+func TestIntegrationAuthenticateContext(t *testing.T) {
+	c := liveClient(t)
+	ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
+	defer cancel()
+	if err := c.AuthenticateContext(ctx); err != nil {
+		t.Fatalf("AuthenticateContext: %v", err)
+	}
+	if c.token == nil || c.token.Value == "" {
+		t.Fatal("token not cached after AuthenticateContext")
+	}
+	// Second call must hit the cache.
+	cachedValue := c.token.Value
+	if err := c.AuthenticateContext(ctx); err != nil {
+		t.Fatalf("AuthenticateContext (cached): %v", err)
+	}
+	if c.token.Value != cachedValue {
+		t.Fatal("cached token was replaced unexpectedly")
+	}
+	// Invalidate forces re-auth.
+	c.InvalidateToken()
+	if c.token != nil {
+		t.Fatal("InvalidateToken did not clear the cache")
+	}
+	if err := c.AuthenticateContext(ctx); err != nil {
+		t.Fatalf("AuthenticateContext (after invalidate): %v", err)
+	}
+	if c.token == nil {
+		t.Fatal("post-invalidate auth left token nil")
+	}
+}
+
+func TestIntegrationGetProjectsAndSelf(t *testing.T) {
+	c := liveClient(t)
+	projects, err := c.GetProjects()
 	if err != nil {
-		t.Errorf("Failed to get projects: %v", err)
+		t.Fatalf("GetProjects: %v", err)
 	}
-
-	for _, project := range projects {
-		if strings.HasPrefix(*project.Title, "Test project") {
-			prjStatus, err := client.DeleteProject(*project.ID)
+	if projects == nil {
+		t.Fatal("nil slice from GetProjects")
+	}
+	ctx := context.Background()
+	uid, err := c.SelfUserID(ctx)
 	if err != nil {
-				t.Errorf("Failed to delete project: %v", err)
-			}
-			if *prjStatus.ID != *project.ID {
-				t.Errorf("Project ID is not equal: %v != %v", prjStatus.ID, project.ID)
+		t.Fatalf("SelfUserID: %v", err)
 	}
+	if uid == "" {
+		t.Fatal("empty self user id")
 	}
 }
 
-	// Test create project
-	project, err := client.CreateProject(NewProjectRequest{
-		Title:       "Test project",
-		Description: "Test project description",
+func TestIntegrationProjectAndTaskLifecycle(t *testing.T) {
+	c := liveClient(t)
+	t.Cleanup(func() { cleanupTestProjects(t, c) })
+
+	suffix := time.Now().UTC().Format("20060102-150405")
+	title := testProjectPrefix + suffix
+	project, err := c.CreateProject(NewProjectRequest{
+		Title:       title,
+		Description: "integration test from go-onlyoffice",
 	})
-
 	if err != nil {
-		t.Errorf("Failed to create project: %v", err)
+		t.Fatalf("CreateProject: %v", err)
+	}
+	if project.ID == nil {
+		t.Fatal("created project without id")
 	}
 
-	// Update project
-	project, err = client.UpdateProject(ProjectUpdateRequest{
+	updated, err := c.UpdateProject(ProjectUpdateRequest{
 		ID:            *project.ID,
-		Title:         "Test project updated",
+		Title:         title + " (updated)",
+		Description:   "updated",
 		ResponsibleID: *project.Responsible.ID,
 	})
+	if err != nil {
+		t.Fatalf("UpdateProject: %v", err)
+	}
+	if updated.Title == nil || *updated.Title != title+" (updated)" {
+		t.Errorf("title not updated: %+v", updated.Title)
+	}
 
-	var task *Task
-	// Test create project task
-	task, err = client.CreateProjectTask(NewProjectTaskRequest{
+	start := Time(time.Now().AddDate(0, 0, -2))
+	deadline := Time(time.Now().AddDate(0, 0, 2))
+	task, err := c.CreateProjectTask(NewProjectTaskRequest{
 		ProjectId:   *project.ID,
-		Title:       "Test task",
-		Description: "Test task description",
-		Notify:      true,
-		MilestoneId: 0,
-		Priority:    0,
-		// Deadline +2 days
-		StartDate: Time(time.Now().AddDate(0, 0, -2)),
-		Deadline:  Time(time.Now().AddDate(0, 0, 2)),
+		Title:       "integration parent task",
+		Description: "from go-onlyoffice integration suite",
+		StartDate:   start,
+		Deadline:    deadline,
+		Priority:    int(TaskPriorityNormal),
 	})
+	if err != nil {
+		t.Fatalf("CreateProjectTask: %v", err)
+	}
+	if task.ID == nil {
+		t.Fatal("created task without id")
+	}
 
-	// Update project task
-	startDate := Time(time.Now().AddDate(0, 0, -14))
-	deadline := Time(time.Now().AddDate(0, 0, 3))
-	task, err = client.UpdateProjectTask(ProjectTaskUpdateRequest{
+	newStart := Time(time.Now().AddDate(0, 0, -14))
+	newDeadline := Time(time.Now().AddDate(0, 0, 3))
+	if _, err := c.UpdateProjectTask(ProjectTaskUpdateRequest{
 		ID:          *task.ID,
-		Title:       "Test task updated",
-		Description: "Test task description updated",
-		StartDate:   &startDate,
-		Deadline:    &deadline,
-	})
+		Title:       "integration parent task (updated)",
+		Description: "updated",
+		StartDate:   &newStart,
+		Deadline:    &newDeadline,
+	}); err != nil {
+		t.Fatalf("UpdateProjectTask: %v", err)
+	}
 
+	// Subtask uses the form-encoded helper; exercises httpx.postForm path.
+	ctx := context.Background()
+	sub, err := c.AddSubtask(ctx, strconv.Itoa(*task.ID), "integration subtask")
 	if err != nil {
-		t.Errorf("Failed to create task: %v", err)
+		t.Fatalf("AddSubtask: %v", err)
+	}
+	if _, ok := sub["id"]; !ok {
+		t.Errorf("subtask response missing id: %+v", sub)
+	}
 }
 
-	if task == nil {
-		t.Error("Value is empty")
+func TestIntegrationCalendarAndCRMRead(t *testing.T) {
+	c := liveClient(t)
+	ctx := context.Background()
+	start := time.Now().Format("2006-01-02")
+	end := time.Now().AddDate(0, 0, 14).Format("2006-01-02")
+
+	if _, err := c.ListCalendars(ctx, start, end); err != nil {
+		t.Errorf("ListCalendars: %v", err)
+	}
+	if _, err := c.ListEvents(ctx, start, end); err != nil {
+		t.Errorf("ListEvents: %v", err)
+	}
+	if _, _, err := c.ListContacts(ctx, 5, 0, ""); err != nil {
+		t.Errorf("ListContacts: %v", err)
+	}
+	if _, _, err := c.ListOpportunities(ctx, 5, 0); err != nil {
+		t.Errorf("ListOpportunities: %v", err)
+	}
+	if _, err := c.ListDealStages(ctx); err != nil {
+		t.Errorf("ListDealStages: %v", err)
+	}
 }
 
-	// Delete project
-	prj, err := client.DeleteProject(*project.ID)
-	if err != nil {
-		t.Errorf("Failed to delete project: %v", err)
+// TestIntegrationDryRunList covers the tiniest project-tasks read that
+// inventar-sync depends on; confirms GetTasks deserialises real responses.
+func TestIntegrationListTasks(t *testing.T) {
+	c := liveClient(t)
+	defaults := GetEnvironmentDefaults()
+	// ProjectID default is "33"; skip the read-only list if the caller hasn't
+	// pointed us at a valid project (we don't know which projects exist).
+	if defaults.ProjectID == "" {
+		t.Skip("ONLYOFFICE_PROJECT_ID not configured")
 	}
-
-	if *prj.ID != *project.ID {
-		t.Errorf("Project ID is not equal: %v != %v", prj.ID, project.ID)
+	pid, err := strconv.Atoi(defaults.ProjectID)
+	if err != nil || pid <= 0 {
+		t.Skipf("ONLYOFFICE_PROJECT_ID %q is not a positive int", defaults.ProjectID)
 	}
-
-	// Test list projects
-	projects, err = client.GetProjects()
-	if err != nil {
-		t.Errorf("Failed to get projects: %v", err)
-	}
-	if len(projects) == 0 {
-		t.Error("Value is empty")
+	if _, err := c.GetTasks(NewProjectGetTasksRequest(pid)); err != nil {
+		t.Fatalf("GetTasks(%d): %v", pid, err)
 	}
 }

cmd/internal/bootstrap/bootstrap.go

@@ -0,0 +1,50 @@
+// Package bootstrap loads CLI environment and constructs an authenticated
+// OnlyOffice client. Shared by cmd/oo and cmd/office; the library never
+// loads dotfiles.
+package bootstrap
+
+import (
+	"context"
+	"fmt"
+	"os"
+	"strings"
+
+	onlyoffice "github.com/eslider/go-onlyoffice"
+	"github.com/joho/godotenv"
+)
+
+// LoadEnv reads .env from the current working directory and applies OO_* aliases.
+func LoadEnv() {
+	_ = godotenv.Load(".env")
+	applyEnvAliases()
+}
+
+// NewClient loads env, validates credentials, and authenticates against OnlyOffice.
+func NewClient(ctx context.Context) (*onlyoffice.Client, error) {
+	LoadEnv()
+	creds := onlyoffice.GetEnvironmentCredentials()
+	if creds.Url == "" || creds.User == "" || creds.Password == "" {
+		return nil, fmt.Errorf("need ONLYOFFICE_URL (or ONLYOFFICE_HOST/OO_URL), user (ONLYOFFICE_USER or ONLYOFFICE_NAME/OO_USER), password (ONLYOFFICE_PASS or ONLYOFFICE_PASSWORD/OO_PASS)")
+	}
+	c := onlyoffice.NewClient(creds)
+	c.SetDefaults(onlyoffice.GetEnvironmentDefaults())
+	if err := c.AuthenticateContext(ctx); err != nil {
+		return nil, err
+	}
+	return c, nil
+}
+
+func applyEnvAliases() {
+	setEnvIfEmpty("ONLYOFFICE_URL", "OO_URL")
+	setEnvIfEmpty("ONLYOFFICE_USER", "OO_USER")
+	setEnvIfEmpty("ONLYOFFICE_PASS", "OO_PASS")
+}
+
+func setEnvIfEmpty(dst, src string) {
+	if strings.TrimSpace(os.Getenv(dst)) != "" {
+		return
+	}
+	if v := strings.TrimSpace(os.Getenv(src)); v != "" {
+		_ = os.Setenv(dst, v)
+	}
+}

cmd/internal/bootstrap/bootstrap_test.go

@@ -0,0 +1,95 @@
+package bootstrap_test
+
+import (
+	"context"
+	"os"
+	"strings"
+	"testing"
+
+	"github.com/eslider/go-onlyoffice/cmd/internal/bootstrap"
+)
+
+func TestLoadEnvFromCWDWithOOAliases(t *testing.T) {
+	clearEnv(t, "ONLYOFFICE_URL", "ONLYOFFICE_USER", "ONLYOFFICE_PASS", "OO_URL", "OO_USER", "OO_PASS")
+	dir := t.TempDir()
+	oldwd, err := os.Getwd()
+	if err != nil {
+		t.Fatal(err)
+	}
+	if err := os.Chdir(dir); err != nil {
+		t.Fatal(err)
+	}
+	t.Cleanup(func() { _ = os.Chdir(oldwd) })
+
+	if err := os.WriteFile(".env", []byte("OO_URL=https://office.example.com\nOO_USER=user@example.com\nOO_PASS=secret\n"), 0o600); err != nil {
+		t.Fatal(err)
+	}
+
+	bootstrap.LoadEnv()
+	if got := os.Getenv("ONLYOFFICE_URL"); got != "https://office.example.com" {
+		t.Fatalf("ONLYOFFICE_URL=%q", got)
+	}
+	if got := os.Getenv("ONLYOFFICE_USER"); got != "user@example.com" {
+		t.Fatalf("ONLYOFFICE_USER=%q", got)
+	}
+	if got := os.Getenv("ONLYOFFICE_PASS"); got != "secret" {
+		t.Fatalf("ONLYOFFICE_PASS=%q", got)
+	}
+}
+
+func TestLoadEnvDoesNotOverrideCanonicalWithAlias(t *testing.T) {
+	clearEnv(t, "ONLYOFFICE_URL", "OO_URL")
+	t.Setenv("ONLYOFFICE_URL", "https://canonical.example")
+	t.Setenv("OO_URL", "https://alias.example")
+
+	bootstrap.LoadEnv()
+
+	if got := os.Getenv("ONLYOFFICE_URL"); got != "https://canonical.example" {
+		t.Fatalf("ONLYOFFICE_URL=%q", got)
+	}
+}
+
+func TestNewClientReturnsErrorWithoutCredentials(t *testing.T) {
+	clearEnv(t,
+		"ONLYOFFICE_URL", "ONLYOFFICE_HOST", "ONLYOFFICE_USER", "ONLYOFFICE_NAME",
+		"ONLYOFFICE_PASS", "ONLYOFFICE_PASSWORD",
+		"OO_URL", "OO_USER", "OO_PASS",
+	)
+	dir := t.TempDir()
+	oldwd, err := os.Getwd()
+	if err != nil {
+		t.Fatal(err)
+	}
+	if err := os.Chdir(dir); err != nil {
+		t.Fatal(err)
+	}
+	t.Cleanup(func() { _ = os.Chdir(oldwd) })
+
+	_, err = bootstrap.NewClient(context.Background())
+	if err == nil {
+		t.Fatal("expected error without credentials")
+	}
+	msg := err.Error()
+	for _, want := range []string{"ONLYOFFICE_URL", "ONLYOFFICE_USER", "ONLYOFFICE_PASS"} {
+		if !strings.Contains(msg, want) {
+			t.Fatalf("error %q missing %q", msg, want)
+		}
+	}
+}
+
+func clearEnv(t *testing.T, keys ...string) {
+	t.Helper()
+	for _, key := range keys {
+		old, ok := os.LookupEnv(key)
+		if err := os.Unsetenv(key); err != nil {
+			t.Fatal(err)
+		}
+		t.Cleanup(func() {
+			if ok {
+				_ = os.Setenv(key, old)
+				return
+			}
+			_ = os.Unsetenv(key)
+		})
+	}
+}

cmd/office/fetch/fetch_integration_test.go

@@ -0,0 +1,108 @@
+package fetch_test
+
+import (
+	"context"
+	"os"
+	"testing"
+
+	"github.com/eslider/go-onlyoffice/cmd/internal/bootstrap"
+	"github.com/eslider/go-onlyoffice/cmd/office/fetch"
+	"github.com/eslider/go-onlyoffice/cmd/office/model"
+)
+
+func skipWithoutLiveAPI(t *testing.T) {
+	t.Helper()
+	if os.Getenv("ONLYOFFICE_URL") == "" && os.Getenv("ONLYOFFICE_HOST") == "" {
+		t.Skip("ONLYOFFICE_URL not set")
+	}
+	if os.Getenv("ONLYOFFICE_USER") == "" && os.Getenv("ONLYOFFICE_NAME") == "" {
+		t.Skip("ONLYOFFICE_USER not set")
+	}
+	if os.Getenv("ONLYOFFICE_PASS") == "" && os.Getenv("ONLYOFFICE_PASSWORD") == "" {
+		t.Skip("ONLYOFFICE_PASS not set")
+	}
+}
+
+func liveLoader(t *testing.T) (*fetch.Loader, context.Context) {
+	t.Helper()
+	skipWithoutLiveAPI(t)
+	client, err := bootstrap.NewClient(context.Background())
+	if err != nil {
+		t.Fatal(err)
+	}
+	return &fetch.Loader{Client: client}, context.Background()
+}
+
+func TestIntegrationListAllSubjects(t *testing.T) {
+	loader, ctx := liveLoader(t)
+
+	cases := []model.ListSpec{
+		{Subject: model.SubjectProjects},
+		{Subject: model.SubjectTasks},
+		{Subject: model.SubjectCalendars},
+		{Subject: model.SubjectEvents},
+		{Subject: model.SubjectContacts},
+		{Subject: model.SubjectPersons},
+		{Subject: model.SubjectCompanies},
+		{Subject: model.SubjectOpportunities},
+		{Subject: model.SubjectCases},
+		{Subject: model.SubjectCRMTasks},
+		{Subject: model.SubjectMailInbox},
+		{Subject: model.SubjectUsers},
+	}
+
+	for _, spec := range cases {
+		t.Run(string(spec.Subject), func(t *testing.T) {
+			items, err := loader.List(ctx, spec)
+			if err != nil {
+				t.Fatalf("List(%s): %v", spec.Subject, err)
+			}
+			t.Logf("%s: %d items", spec.Subject, len(items))
+			for i, it := range items {
+				if it.ID == "" {
+					t.Errorf("item[%d] missing ID", i)
+				}
+				if it.Title == "" {
+					t.Errorf("item[%d] missing Title", i)
+				}
+			}
+		})
+	}
+}
+
+func TestIntegrationListProjectsMapsRealFields(t *testing.T) {
+	loader, ctx := liveLoader(t)
+	spec := model.ListSpec{Subject: model.SubjectProjects}
+	items, err := loader.List(ctx, spec)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if len(items) == 0 {
+		t.Skip("no projects on instance")
+	}
+	detail, err := loader.Detail(ctx, items[0])
+	if err != nil {
+		t.Fatalf("Detail: %v", err)
+	}
+	if detail == nil {
+		t.Fatal("nil detail")
+	}
+}
+
+func TestIntegrationMailInboxDetail(t *testing.T) {
+	loader, ctx := liveLoader(t)
+	items, err := loader.List(ctx, model.ListSpec{Subject: model.SubjectMailInbox})
+	if err != nil {
+		t.Fatal(err)
+	}
+	if len(items) == 0 {
+		t.Skip("inbox empty")
+	}
+	detail, err := loader.Detail(ctx, items[0])
+	if err != nil {
+		t.Fatalf("GetMailMessage: %v", err)
+	}
+	if detail["subject"] == nil {
+		t.Fatalf("message missing subject: %+v", detail)
+	}
+}

cmd/office/fetch/list.go

@@ -0,0 +1,393 @@
+package fetch
+
+import (
+	"context"
+	"fmt"
+	"os"
+	"path/filepath"
+	"strconv"
+	"time"
+
+	onlyoffice "github.com/eslider/go-onlyoffice"
+	"github.com/eslider/go-onlyoffice/cmd/office/model"
+)
+
+// Loader fetches list items for a menu subject using the OnlyOffice client.
+type Loader struct {
+	Client *onlyoffice.Client
+}
+
+// List returns items for the given list spec (nav leaf).
+func (l *Loader) List(ctx context.Context, spec model.ListSpec) ([]model.Item, error) {
+	if l == nil || l.Client == nil {
+		return nil, fmt.Errorf("fetch: client is nil")
+	}
+	switch spec.Subject {
+	case model.SubjectProjects:
+		return l.listProjects(ctx)
+	case model.SubjectTasks:
+		if spec.ProjectID != "" {
+			return l.listTasksForProject(ctx, spec.ProjectID)
+		}
+		return l.listTasks(ctx)
+	case model.SubjectCalendars:
+		return l.listCalendars(ctx)
+	case model.SubjectEvents:
+		return l.listEvents(ctx)
+	case model.SubjectContacts:
+		return l.listContacts(ctx, nil)
+	case model.SubjectPersons:
+		falseVal := false
+		return l.listContacts(ctx, &falseVal)
+	case model.SubjectCompanies:
+		trueVal := true
+		return l.listContacts(ctx, &trueVal)
+	case model.SubjectOpportunities:
+		return l.listOpportunities(ctx)
+	case model.SubjectCases:
+		return l.listCases(ctx)
+	case model.SubjectCRMTasks:
+		return l.listCRMTasks(ctx)
+	case model.SubjectMailInbox:
+		return l.listMail(ctx, onlyoffice.MailFolderInbox)
+	case model.SubjectMailSent:
+		return l.listMail(ctx, onlyoffice.MailFolderSent)
+	case model.SubjectMailDrafts:
+		return l.listMail(ctx, onlyoffice.MailFolderDrafts)
+	case model.SubjectMailTrash:
+		return l.listMail(ctx, onlyoffice.MailFolderTrash)
+	case model.SubjectMailSpam:
+		return l.listMail(ctx, onlyoffice.MailFolderSpam)
+	case model.SubjectUsers:
+		return l.listUsers(ctx)
+	case model.SubjectProjectFiles:
+		pid := spec.ProjectID
+		if pid == "" {
+			pid = onlyoffice.GetEnvironmentDefaults().ProjectID
+		}
+		if pid == "" {
+			return nil, fmt.Errorf("set ONLYOFFICE_PROJECT_ID or pick a project in the tree")
+		}
+		return l.listProjectFiles(ctx, pid)
+	case model.SubjectTaskFiles:
+		if spec.TaskID == "" {
+			return nil, fmt.Errorf("pick a task under Projects in the tree")
+		}
+		return l.listTaskFiles(ctx, spec.TaskID)
+	default:
+		return nil, fmt.Errorf("unsupported subject %q", spec.Subject)
+	}
+}
+
+// LoadProjectsForNav returns projects to inject as dynamic tree nodes.
+func (l *Loader) LoadProjectsForNav(ctx context.Context) ([]model.Item, error) {
+	return l.listProjects(ctx)
+}
+
+// Detail fetches full record data for preview when list row is insufficient.
+func (l *Loader) Detail(ctx context.Context, item model.Item) (map[string]any, error) {
+	switch item.Kind {
+	case model.KindOpportunity:
+		return l.Client.GetOpportunity(ctx, item.ID)
+	case model.KindContact:
+		return l.Client.GetContact(ctx, item.ID)
+	case model.KindMail:
+		return l.Client.GetMailMessage(ctx, item.ID)
+	case model.KindTask, model.KindCRMTask:
+		return l.Client.GetTaskByID(ctx, item.ID)
+	case model.KindProject:
+		return l.Client.GetProjectByID(ctx, item.ID)
+	default:
+		if item.Raw != nil {
+			return item.Raw, nil
+		}
+		return map[string]any{"id": item.ID, "title": item.Title}, nil
+	}
+}
+
+// Execute runs a user-selected action on an item.
+func (l *Loader) Execute(ctx context.Context, action model.ActionID, item model.Item, destPath string) (string, error) {
+	switch action {
+	case model.ActionView:
+		return "view", nil
+	case model.ActionDelete:
+		return l.executeDelete(ctx, item)
+	case model.ActionDownload:
+		return l.executeDownload(ctx, item, destPath)
+	default:
+		return "", fmt.Errorf("unsupported action %q", action)
+	}
+}
+
+func (l *Loader) executeDelete(ctx context.Context, item model.Item) (string, error) {
+	switch item.Kind {
+	case model.KindProject:
+		id, err := strconv.Atoi(item.ID)
+		if err != nil {
+			return "", err
+		}
+		if _, err := l.Client.DeleteProject(id); err != nil {
+			return "", err
+		}
+		return fmt.Sprintf("Deleted project %s", item.Title), nil
+	case model.KindTask:
+		if _, err := l.Client.DeleteTask(ctx, item.ID); err != nil {
+			return "", err
+		}
+		return fmt.Sprintf("Deleted task %s", item.Title), nil
+	case model.KindContact:
+		if _, err := l.Client.DeleteContact(ctx, item.ID); err != nil {
+			return "", err
+		}
+		return fmt.Sprintf("Deleted contact %s", item.Title), nil
+	case model.KindOpportunity:
+		if _, err := l.Client.DeleteOpportunity(ctx, item.ID); err != nil {
+			return "", err
+		}
+		return fmt.Sprintf("Deleted deal %s", item.Title), nil
+	case model.KindCase:
+		if _, err := l.Client.DeleteCase(ctx, item.ID); err != nil {
+			return "", err
+		}
+		return fmt.Sprintf("Deleted case %s", item.Title), nil
+	case model.KindCRMTask:
+		if _, err := l.Client.DeleteCRMTask(ctx, item.ID); err != nil {
+			return "", err
+		}
+		return fmt.Sprintf("Deleted CRM task %s", item.Title), nil
+	case model.KindMail:
+		id, err := strconv.Atoi(item.ID)
+		if err != nil {
+			return "", err
+		}
+		if _, err := l.Client.RemoveMailMessages(ctx, id); err != nil {
+			return "", err
+		}
+		return fmt.Sprintf("Deleted message %s", item.Title), nil
+	case model.KindFile:
+		id, err := strconv.Atoi(item.ID)
+		if err != nil {
+			return "", err
+		}
+		if err := l.Client.DeleteFiles(ctx, []int{id}); err != nil {
+			return "", err
+		}
+		return fmt.Sprintf("Deleted file %s", item.Title), nil
+	default:
+		return "", fmt.Errorf("delete not supported for %s", item.Kind)
+	}
+}
+
+func (l *Loader) executeDownload(ctx context.Context, item model.Item, destPath string) (string, error) {
+	if item.Kind != model.KindFile {
+		return "", fmt.Errorf("download only for files")
+	}
+	if destPath == "" {
+		destPath = filepath.Join(os.TempDir(), "office", item.Title)
+	}
+	if err := os.MkdirAll(filepath.Dir(destPath), 0o755); err != nil {
+		return "", err
+	}
+	f, err := os.Create(destPath)
+	if err != nil {
+		return "", err
+	}
+	defer f.Close()
+	if _, err := l.Client.DownloadFile(ctx, item.ID, f); err != nil {
+		return "", err
+	}
+	return fmt.Sprintf("Downloaded to %s", destPath), nil
+}
+
+func (l *Loader) listTasksForProject(ctx context.Context, projectID string) ([]model.Item, error) {
+	rows, err := l.Client.ListTasks(ctx, projectID, "")
+	if err != nil {
+		return nil, err
+	}
+	return ItemsFromMaps(rows, model.KindTask, TaskItemFields), nil
+}
+
+func (l *Loader) listTaskFiles(ctx context.Context, taskID string) ([]model.Item, error) {
+	files, err := l.Client.GetTaskFiles(ctx, taskID)
+	if err != nil {
+		return nil, err
+	}
+	var items []model.Item
+	for _, f := range files {
+		id, title := "", ""
+		if f.ID != nil {
+			id = f.ID.String()
+		}
+		if f.Title != nil {
+			title = *f.Title
+		}
+		items = append(items, model.Item{
+			ID: id, Title: title, Kind: model.KindFile,
+			Raw: map[string]any{"id": id, "title": title},
+		})
+	}
+	return items, nil
+}
+
+func (l *Loader) listProjects(ctx context.Context) ([]model.Item, error) {
+	projects, err := l.Client.GetProjects()
+	if err != nil {
+		return nil, err
+	}
+	items := make([]model.Item, len(projects))
+	for i, p := range projects {
+		id := ""
+		if p.ID != nil {
+			id = fmt.Sprint(*p.ID)
+		}
+		title := ""
+		if p.Title != nil {
+			title = *p.Title
+		}
+		raw := map[string]any{
+			"id":    id,
+			"title": title,
+		}
+		if p.TaskCount != nil {
+			raw["taskCount"] = *p.TaskCount
+		}
+		if p.TaskCountTotal != nil {
+			raw["taskCountTotal"] = *p.TaskCountTotal
+		}
+		if p.DocumentsCount != nil {
+			raw["documentsCount"] = *p.DocumentsCount
+		}
+		if p.ParticipantCount != nil {
+			raw["participantCount"] = *p.ParticipantCount
+		}
+		items[i] = model.Item{
+			ID: id, Title: title, Kind: model.KindProject, Raw: raw,
+		}
+	}
+	return items, nil
+}
+
+func (l *Loader) listTasks(ctx context.Context) ([]model.Item, error) {
+	rows, err := l.Client.ListAllTasks(ctx, "")
+	if err != nil {
+		return nil, err
+	}
+	return ItemsFromMaps(rows, model.KindTask, TaskItemFields), nil
+}
+
+func (l *Loader) listCalendars(ctx context.Context) ([]model.Item, error) {
+	rows, err := l.Client.ListCalendars(ctx, "", "")
+	if err != nil {
+		return nil, err
+	}
+	return ItemsFromMaps(rows, model.KindCalendar, FieldMap{IDKey: "objectId", TitleKey: "title"}), nil
+}
+
+func (l *Loader) listEvents(ctx context.Context) ([]model.Item, error) {
+	start := time.Now().Format("2006-01-02")
+	end := time.Now().AddDate(0, 0, 7).Format("2006-01-02")
+	rows, err := l.Client.ListEvents(ctx, start, end)
+	if err != nil {
+		return nil, err
+	}
+	return ItemsFromMaps(rows, model.KindEvent, FieldMap{IDKey: "objectId", TitleKey: "title", SubtitleKey: "start"}), nil
+}
+
+func (l *Loader) listContacts(ctx context.Context, companyOnly *bool) ([]model.Item, error) {
+	rows, err := l.Client.ListAllContacts(ctx)
+	if err != nil {
+		return nil, err
+	}
+	if companyOnly != nil {
+		filtered := make([]map[string]any, 0, len(rows))
+		for _, r := range rows {
+			isCo, _ := r["isCompany"].(bool)
+			if isCo == *companyOnly {
+				filtered = append(filtered, r)
+			}
+		}
+		rows = filtered
+	}
+	return ItemsFromMaps(rows, model.KindContact, ContactItemFields), nil
+}
+
+func (l *Loader) listOpportunities(ctx context.Context) ([]model.Item, error) {
+	rows, err := l.Client.ListAllOpportunities(ctx)
+	if err != nil {
+		return nil, err
+	}
+	return ItemsFromMaps(rows, model.KindOpportunity, FieldMap{IDKey: "id", TitleKey: "title", SubtitleKey: "stage"}), nil
+}
+
+func (l *Loader) listCases(ctx context.Context) ([]model.Item, error) {
+	cases, _, err := l.Client.ListCases(ctx, 100, 0)
+	if err != nil {
+		return nil, err
+	}
+	return ItemsFromMaps(cases, model.KindCase, FieldMap{IDKey: "id", TitleKey: "title"}), nil
+}
+
+func (l *Loader) listCRMTasks(ctx context.Context) ([]model.Item, error) {
+	rows, _, err := l.Client.ListCRMTasks(ctx, 100, 0)
+	if err != nil {
+		return nil, err
+	}
+	return ItemsFromMaps(rows, model.KindCRMTask, TaskItemFields), nil
+}
+
+func (l *Loader) listMail(ctx context.Context, folder int) ([]model.Item, error) {
+	rows, err := l.Client.ListMailMessages(ctx, onlyoffice.MailMessagesFilter{Folder: folder, Count: 50})
+	if err != nil {
+		return nil, err
+	}
+	return ItemsFromMaps(rows, model.KindMail, MailItemFields), nil
+}
+
+func (l *Loader) listUsers(ctx context.Context) ([]model.Item, error) {
+	users, err := l.Client.GetUsers()
+	if err != nil {
+		return nil, err
+	}
+	items := make([]model.Item, len(users))
+	for i, u := range users {
+		id := ""
+		if u.ID != nil {
+			id = fmt.Sprint(*u.ID)
+		}
+		title := ""
+		if u.DisplayName != nil {
+			title = *u.DisplayName
+		}
+		email := ""
+		if u.Email != nil {
+			email = *u.Email
+		}
+		items[i] = model.Item{
+			ID: id, Title: title, Subtitle: email, Kind: model.KindUser,
+			Raw: map[string]any{"id": id, "displayName": title, "email": email},
+		}
+	}
+	return items, nil
+}
+
+func (l *Loader) listProjectFiles(ctx context.Context, projectID string) ([]model.Item, error) {
+	resp, err := l.Client.GetProjectFiles(ctx, projectID)
+	if err != nil {
+		return nil, err
+	}
+	var items []model.Item
+	for _, f := range resp.Files {
+		id, title := "", ""
+		if f.ID != nil {
+			id = f.ID.String()
+		}
+		if f.Title != nil {
+			title = *f.Title
+		}
+		items = append(items, model.Item{
+			ID: id, Title: title, Kind: model.KindFile,
+			Raw: map[string]any{"id": id, "title": title},
+		})
+	}
+	return items, nil
+}

cmd/office/fetch/map.go

@@ -0,0 +1,78 @@
+package fetch
+
+import (
+	"fmt"
+
+	"github.com/eslider/go-onlyoffice/cmd/office/model"
+)
+
+// FieldMap names the JSON keys used when building list items from API rows.
+type FieldMap struct {
+	IDKey       string
+	TitleKey    string
+	SubtitleKey string
+}
+
+// TaskItemFields is the default field map for project tasks.
+var TaskItemFields = FieldMap{IDKey: "id", TitleKey: "title", SubtitleKey: "status"}
+
+// ProjectItemFields is the default field map for projects.
+var ProjectItemFields = FieldMap{IDKey: "id", TitleKey: "title", SubtitleKey: "status"}
+
+// ContactItemFields is the default field map for CRM contacts.
+var ContactItemFields = FieldMap{IDKey: "id", TitleKey: "displayName", SubtitleKey: "primaryEmail"}
+
+// MailItemFields is the default field map for mail messages.
+var MailItemFields = FieldMap{IDKey: "id", TitleKey: "subject", SubtitleKey: "from"}
+
+// ItemsFromMaps converts OnlyOffice list rows into TUI items.
+func ItemsFromMaps(rows []map[string]any, kind model.Kind, fields FieldMap) []model.Item {
+	out := make([]model.Item, len(rows))
+	for i, row := range rows {
+		title := str(row, fields.TitleKey)
+		if title == "" {
+			title = str(row, "title")
+		}
+		if title == "" {
+			title = str(row, "name")
+		}
+		if title == "" {
+			title = "(untitled)"
+		}
+		raw := row
+		out[i] = model.Item{
+			ID:       idStr(row, fields.IDKey),
+			Title:    title,
+			Subtitle: str(row, fields.SubtitleKey),
+			Kind:     kind,
+			Raw:      raw,
+		}
+	}
+	return out
+}
+
+func idStr(m map[string]any, key string) string {
+	if key == "" {
+		key = "id"
+	}
+	switch v := m[key].(type) {
+	case string:
+		return v
+	case float64:
+		return fmt.Sprintf("%.0f", v)
+	case int:
+		return fmt.Sprintf("%d", v)
+	default:
+		return fmt.Sprint(m[key])
+	}
+}
+
+func str(m map[string]any, key string) string {
+	if v, ok := m[key].(string); ok {
+		return v
+	}
+	if m[key] == nil {
+		return ""
+	}
+	return fmt.Sprint(m[key])
+}

cmd/office/fetch/preview.go

@@ -0,0 +1,43 @@
+package fetch
+
+import (
+	"bytes"
+	"context"
+	"fmt"
+
+	onlyoffice "github.com/eslider/go-onlyoffice"
+	"github.com/eslider/go-onlyoffice/cmd/office/model"
+	"github.com/eslider/go-onlyoffice/cmd/office/preview"
+)
+
+// PreviewMarkdown loads item data and returns markdown for the preview pane.
+func (l *Loader) PreviewMarkdown(ctx context.Context, item model.Item) (string, error) {
+	if l == nil || l.Client == nil {
+		return "", fmt.Errorf("fetch: client is nil")
+	}
+	if item.Kind == model.KindFile {
+		return l.filePreviewMarkdown(ctx, item)
+	}
+	raw, err := l.Detail(ctx, item)
+	if err != nil {
+		return "", err
+	}
+	return preview.EntityMarkdown(string(item.Kind), raw), nil
+}
+
+func (l *Loader) filePreviewMarkdown(ctx context.Context, item model.Item) (string, error) {
+	if item.ID == "" {
+		return "", fmt.Errorf("file id missing")
+	}
+	name := item.Title
+	if meta, err := l.Client.GetFile(ctx, item.ID); err == nil && meta != nil {
+		if t := onlyoffice.FileEntryTitle(meta); t != "" {
+			name = t
+		}
+	}
+	var buf bytes.Buffer
+	if _, err := l.Client.DownloadFile(ctx, item.ID, &buf); err != nil {
+		return "", err
+	}
+	return preview.FileBytesToMarkdown(name, buf.Bytes())
+}

cmd/office/fetch/save.go

@@ -0,0 +1,43 @@
+package fetch
+
+import (
+	"context"
+	"fmt"
+	"strconv"
+
+	onlyoffice "github.com/eslider/go-onlyoffice"
+	"github.com/eslider/go-onlyoffice/cmd/office/model"
+)
+
+// SaveItem persists editable form fields for supported entity kinds.
+func (l *Loader) SaveItem(ctx context.Context, item model.Item, title, description string) error {
+	if l == nil || l.Client == nil {
+		return fmt.Errorf("fetch: client is nil")
+	}
+	switch item.Kind {
+	case model.KindTask:
+		return l.UpdateTask(ctx, item.ID, title, description)
+	case model.KindProject:
+		id, err := strconv.Atoi(item.ID)
+		if err != nil {
+			return err
+		}
+		_, err = l.Client.UpdateProject(onlyoffice.ProjectUpdateRequest{
+			ID:          id,
+			Title:       title,
+			Description: description,
+		})
+		return err
+	default:
+		return fmt.Errorf("save not supported for %s", item.Kind)
+	}
+}
+
+// DetailForm loads form field values for the detail pane.
+func (l *Loader) DetailForm(ctx context.Context, item model.Item) (model.FormFields, error) {
+	raw, err := l.Detail(ctx, item)
+	if err != nil {
+		return model.FormFields{}, err
+	}
+	return model.FormFieldsFromRaw(item.Kind, raw), nil
+}

cmd/office/fetch/task.go

@@ -0,0 +1,36 @@
+package fetch
+
+import (
+	"context"
+	"fmt"
+	"strconv"
+
+	onlyoffice "github.com/eslider/go-onlyoffice"
+	"github.com/eslider/go-onlyoffice/cmd/office/model"
+)
+
+// UpdateTask saves title and description for a project task.
+func (l *Loader) UpdateTask(ctx context.Context, taskID, title, description string) error {
+	if l == nil || l.Client == nil {
+		return fmt.Errorf("fetch: client is nil")
+	}
+	id, err := strconv.Atoi(taskID)
+	if err != nil {
+		return fmt.Errorf("task id %q: %w", taskID, err)
+	}
+	_, err = l.Client.UpdateProjectTask(onlyoffice.ProjectTaskUpdateRequest{
+		ID:          id,
+		Title:       title,
+		Description: description,
+	})
+	return err
+}
+
+// TaskFields loads title and description for a project task item.
+func (l *Loader) TaskFields(ctx context.Context, item model.Item) (title, description string, err error) {
+	fields, err := l.DetailForm(ctx, item)
+	if err != nil {
+		return "", "", err
+	}
+	return fields.Primary, fields.Secondary, nil
+}

cmd/office/fetch/task_integration_test.go

@@ -0,0 +1,68 @@
+//go:build integration
+
+package fetch_test
+
+import (
+	"context"
+	"os"
+	"testing"
+
+	"github.com/eslider/go-onlyoffice/cmd/office/model"
+)
+
+func TestIntegrationUpdateTaskTitleDescription(t *testing.T) {
+	loader, ctx := liveLoader(t)
+	items, err := loader.List(ctx, model.ListSpec{Subject: model.SubjectTasks})
+	if err != nil {
+		t.Fatal(err)
+	}
+	if len(items) == 0 {
+		t.Skip("no tasks")
+	}
+	item := items[0]
+	title, desc, err := loader.TaskFields(ctx, item)
+	if err != nil {
+		t.Fatal(err)
+	}
+	restoreTitle, restoreDesc := title, desc
+	t.Cleanup(func() {
+		_ = loader.UpdateTask(context.Background(), item.ID, restoreTitle, restoreDesc)
+	})
+	newTitle := title + " (office TUI test)"
+	newDesc := desc + "\n\n_edited by office integration test_"
+	if err := loader.UpdateTask(ctx, item.ID, newTitle, newDesc); err != nil {
+		t.Fatal(err)
+	}
+	gotTitle, gotDesc, err := loader.TaskFields(ctx, item)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if gotTitle != newTitle {
+		t.Fatalf("title: got %q want %q", gotTitle, newTitle)
+	}
+	if gotDesc != newDesc {
+		t.Fatalf("description mismatch")
+	}
+}
+
+func TestIntegrationTaskFieldsFromLiveAPI(t *testing.T) {
+	if os.Getenv("ONLYOFFICE_URL") == "" && os.Getenv("ONLYOFFICE_HOST") == "" {
+		t.Skip("ONLYOFFICE_URL not set")
+	}
+	loader, ctx := liveLoader(t)
+	items, err := loader.List(ctx, model.ListSpec{Subject: model.SubjectTasks})
+	if err != nil {
+		t.Fatal(err)
+	}
+	if len(items) == 0 {
+		t.Skip("no tasks")
+	}
+	title, desc, err := loader.TaskFields(ctx, items[0])
+	if err != nil {
+		t.Fatal(err)
+	}
+	if title == "" {
+		t.Fatal("empty title")
+	}
+	_ = desc
+}

cmd/office/main.go

@@ -0,0 +1,34 @@
+// Command office is a terminal UI for OnlyOffice Workspace.
+//
+// Three-pane layout: module tree (left), selectable list (center),
+// markdown preview (right). Uses github.com/eslider/go-onlyoffice for API calls.
+//
+// Build & install:
+//
+//	go install github.com/eslider/go-onlyoffice/cmd/office@latest
+package main
+
+import (
+	"context"
+	"fmt"
+	"os"
+
+	tea "github.com/charmbracelet/bubbletea"
+	"github.com/eslider/go-onlyoffice/cmd/internal/bootstrap"
+	"github.com/eslider/go-onlyoffice/cmd/office/ui"
+)
+
+func main() {
+	client, err := bootstrap.NewClient(context.Background())
+	if err != nil {
+		fmt.Fprintln(os.Stderr, err)
+		os.Exit(1)
+	}
+
+	m := ui.NewModel(client)
+	p := tea.NewProgram(m, tea.WithAltScreen(), tea.WithMouseCellMotion())
+	if _, err := p.Run(); err != nil {
+		fmt.Fprintln(os.Stderr, err)
+		os.Exit(1)
+	}
+}

cmd/office/model/actions.go

@@ -0,0 +1,64 @@
+package model
+
+// ActionID identifies an operation on a list item.
+type ActionID string
+
+const (
+	ActionView     ActionID = "view"
+	ActionSave     ActionID = "save"
+	ActionDelete   ActionID = "delete"
+	ActionRefresh  ActionID = "refresh"
+	ActionDownload ActionID = "download"
+)
+
+// ItemAction is one CRUD-style operation offered for an item.
+type ItemAction struct {
+	ID     ActionID
+	Label  string
+	Danger bool
+}
+
+// ActionsFor returns available operations for an item kind (detail pane action bar).
+func ActionsFor(kind Kind) []ItemAction {
+	switch kind {
+	case KindProject:
+		return []ItemAction{
+			{ID: ActionSave, Label: "Save"},
+			{ID: ActionDelete, Label: "Delete", Danger: true},
+		}
+	case KindTask:
+		return []ItemAction{
+			{ID: ActionSave, Label: "Save"},
+			{ID: ActionDelete, Label: "Delete task", Danger: true},
+		}
+	case KindCRMTask:
+		return []ItemAction{
+			{ID: ActionDelete, Label: "Delete", Danger: true},
+		}
+	case KindContact:
+		return []ItemAction{
+			{ID: ActionDelete, Label: "Delete contact", Danger: true},
+		}
+	case KindOpportunity:
+		return []ItemAction{
+			{ID: ActionDelete, Label: "Delete deal", Danger: true},
+		}
+	case KindCase:
+		return []ItemAction{
+			{ID: ActionDelete, Label: "Delete case", Danger: true},
+		}
+	case KindMail:
+		return []ItemAction{
+			{ID: ActionDelete, Label: "Delete message", Danger: true},
+		}
+	case KindFile:
+		return []ItemAction{
+			{ID: ActionDownload, Label: "Download"},
+			{ID: ActionDelete, Label: "Delete file", Danger: true},
+		}
+	case KindEvent, KindCalendar, KindUser:
+		return nil
+	default:
+		return nil
+	}
+}

cmd/office/model/columns.go

@@ -0,0 +1,287 @@
+package model
+
+import (
+	"fmt"
+	"sort"
+	"strconv"
+	"strings"
+)
+
+// TableColumn is one column in the center data table.
+type TableColumn struct {
+	Key   string
+	Title string
+	Width int
+}
+
+var subjectExtraKeys = map[Subject][]string{
+	SubjectTasks:         {"status", "deadline", "responsible"},
+	SubjectCalendars:     {"description"},
+	SubjectEvents:        {"start", "end"},
+	SubjectContacts:      {"primaryEmail", "displayName"},
+	SubjectPersons:       {"primaryEmail", "displayName"},
+	SubjectCompanies:     {"primaryEmail", "displayName"},
+	SubjectOpportunities: {"stage", "bidValue", "bidCurrency"},
+	SubjectCases:         {"status"},
+	SubjectCRMTasks:      {"status", "deadline"},
+	SubjectMailInbox:     {"from", "date"},
+	SubjectMailSent:      {"to", "date"},
+	SubjectMailDrafts:    {"to", "date"},
+	SubjectMailTrash:     {"from", "date"},
+	SubjectMailSpam:      {"from", "date"},
+	SubjectUsers:         {"email", "displayName"},
+}
+
+// BuildColumns derives table columns from the list subject and item payloads.
+func BuildColumns(subject Subject, items []Item) []TableColumn {
+	if subject == SubjectProjects {
+		return buildProjectColumns(items)
+	}
+	cols := []TableColumn{
+		{Key: "_sel", Title: "✓", Width: 3},
+		{Key: "id", Title: "ID", Width: 10},
+		{Key: "title", Title: "Title", Width: 28},
+	}
+	if hasSubtitle(items) {
+		cols = append(cols, TableColumn{Key: "subtitle", Title: "Subtitle", Width: 22})
+	}
+
+	seen := map[string]bool{"_sel": true, "id": true, "title": true, "subtitle": true}
+	for _, key := range subjectExtraKeys[subject] {
+		if seen[key] || !columnHasData(items, key) {
+			continue
+		}
+		seen[key] = true
+		cols = append(cols, TableColumn{Key: key, Title: titleLabel(key), Width: defaultWidth(key)})
+	}
+
+	discovered := discoverRawKeys(items, seen, 8)
+	for _, key := range discovered {
+		cols = append(cols, TableColumn{Key: key, Title: titleLabel(key), Width: defaultWidth(key)})
+	}
+
+	sizeColumns(cols, items)
+	return cols
+}
+
+func buildProjectColumns(items []Item) []TableColumn {
+	cols := []TableColumn{
+		{Key: "_sel", Title: "✓", Width: 3},
+		{Key: "id", Title: "ID", Width: 8},
+		{Key: "title", Title: "Title", Width: 28},
+		{Key: "tasks", Title: "Tasks (open/closed)", Width: 18},
+		{Key: "documents", Title: "Documents", Width: 11},
+		{Key: "users", Title: "Users", Width: 8},
+	}
+	sizeColumns(cols, items)
+	return cols
+}
+
+// CellText returns the display string for one table cell.
+func CellText(it Item, key string) string {
+	switch key {
+	case "_sel":
+		if it.Selected {
+			return "●"
+		}
+		return "○"
+	case "id":
+		return it.ID
+	case "title":
+		return it.Title
+	case "subtitle":
+		return it.Subtitle
+	case "tasks":
+		return formatProjectTasks(it.Raw)
+	case "documents":
+		return intRaw(it.Raw, "documentsCount")
+	case "users":
+		return intRaw(it.Raw, "participantCount")
+	case "kind":
+		return string(it.Kind)
+	default:
+		if it.Raw == nil {
+			return ""
+		}
+		return formatAny(it.Raw[key])
+	}
+}
+
+func formatProjectTasks(raw map[string]any) string {
+	if raw == nil {
+		return "0/0"
+	}
+	open := intRawVal(raw, "taskCount")
+	total := intRawVal(raw, "taskCountTotal")
+	closed := total - open
+	if closed < 0 {
+		closed = 0
+	}
+	return fmt.Sprintf("%d/%d", open, closed)
+}
+
+func intRaw(raw map[string]any, key string) string {
+	if raw == nil {
+		return ""
+	}
+	v := intRawVal(raw, key)
+	if v == 0 {
+		if _, ok := raw[key]; !ok {
+			return ""
+		}
+	}
+	return fmt.Sprintf("%d", v)
+}
+
+func intRawVal(raw map[string]any, key string) int {
+	if raw == nil {
+		return 0
+	}
+	switch v := raw[key].(type) {
+	case int:
+		return v
+	case int64:
+		return int(v)
+	case float64:
+		return int(v)
+	case string:
+		n, _ := strconv.Atoi(v)
+		return n
+	default:
+		if raw[key] == nil {
+			return 0
+		}
+		n, _ := strconv.Atoi(fmt.Sprint(raw[key]))
+		return n
+	}
+}
+
+func hasSubtitle(items []Item) bool {
+	for _, it := range items {
+		if it.Subtitle != "" {
+			return true
+		}
+	}
+	return false
+}
+
+func columnHasData(items []Item, key string) bool {
+	for _, it := range items {
+		if CellText(it, key) != "" {
+			return true
+		}
+	}
+	return false
+}
+
+func discoverRawKeys(items []Item, seen map[string]bool, limit int) []string {
+	counts := map[string]int{}
+	for _, it := range items {
+		if it.Raw == nil {
+			continue
+		}
+		for k := range it.Raw {
+			if seen[k] || k == "id" || k == "title" {
+				continue
+			}
+			counts[k]++
+		}
+	}
+	type kv struct {
+		k string
+		n int
+	}
+	var ranked []kv
+	for k, n := range counts {
+		ranked = append(ranked, kv{k, n})
+	}
+	sort.Slice(ranked, func(i, j int) bool {
+		if ranked[i].n == ranked[j].n {
+			return ranked[i].k < ranked[j].k
+		}
+		return ranked[i].n > ranked[j].n
+	})
+	out := make([]string, 0, limit)
+	for _, r := range ranked {
+		if len(out) >= limit {
+			break
+		}
+		out = append(out, r.k)
+	}
+	return out
+}
+
+func titleLabel(key string) string {
+	if key == "" {
+		return ""
+	}
+	parts := strings.Split(key, "_")
+	for i, p := range parts {
+		if p == "" {
+			continue
+		}
+		parts[i] = strings.ToUpper(p[:1]) + p[1:]
+	}
+	return strings.Join(parts, " ")
+}
+
+func defaultWidth(key string) int {
+	switch key {
+	case "id", "status", "stage":
+		return 10
+	case "start", "end", "deadline", "date":
+		return 18
+	case "from", "to", "email", "primaryEmail":
+		return 22
+	case "description", "displayName":
+		return 24
+	default:
+		return 14
+	}
+}
+
+func sizeColumns(cols []TableColumn, items []Item) {
+	for i := range cols {
+		maxW := runeLen(cols[i].Title)
+		for _, it := range items {
+			n := runeLen(CellText(it, cols[i].Key))
+			if n > maxW {
+				maxW = n
+			}
+		}
+		maxW += 2
+		if maxW < 4 {
+			maxW = 4
+		}
+		if maxW > 36 {
+			maxW = 36
+		}
+		cols[i].Width = maxW
+	}
+}
+
+func runeLen(s string) int {
+	return len([]rune(s))
+}
+
+func formatAny(v any) string {
+	if v == nil {
+		return ""
+	}
+	switch x := v.(type) {
+	case string:
+		return x
+	case bool:
+		if x {
+			return "yes"
+		}
+		return "no"
+	case float64:
+		if x == float64(int64(x)) {
+			return fmt.Sprintf("%d", int64(x))
+		}
+		return fmt.Sprintf("%g", x)
+	default:
+		return fmt.Sprint(v)
+	}
+}

cmd/office/model/columns_test.go

@@ -0,0 +1,55 @@
+package model
+
+import "testing"
+
+func TestBuildProjectColumns(t *testing.T) {
+	items := []Item{{
+		ID: "1", Title: "Alpha", Kind: KindProject,
+		Raw: map[string]any{
+			"taskCount": 3, "taskCountTotal": 5,
+			"documentsCount": 2, "participantCount": 4,
+		},
+	}}
+	cols := BuildColumns(SubjectProjects, items)
+	want := []string{"_sel", "id", "title", "tasks", "documents", "users"}
+	if len(cols) != len(want) {
+		t.Fatalf("got %d columns, want %d", len(cols), len(want))
+	}
+	for i, key := range want {
+		if cols[i].Key != key {
+			t.Fatalf("col[%d]=%q want %q", i, cols[i].Key, key)
+		}
+	}
+	for _, c := range cols {
+		if c.Key == "status" || c.Key == "subtitle" {
+			t.Fatalf("unexpected column %q", c.Key)
+		}
+	}
+}
+
+func TestFormatProjectTasksOpenClosed(t *testing.T) {
+	raw := map[string]any{"taskCount": 3, "taskCountTotal": 8}
+	if got := formatProjectTasks(raw); got != "3/5" {
+		t.Fatalf("got %q want 3/5", got)
+	}
+}
+
+func TestCellTextProjectDocumentsUsers(t *testing.T) {
+	it := Item{Raw: map[string]any{"documentsCount": 7, "participantCount": 2}}
+	if got := CellText(it, "documents"); got != "7" {
+		t.Fatalf("documents: %q", got)
+	}
+	if got := CellText(it, "users"); got != "2" {
+		t.Fatalf("users: %q", got)
+	}
+}
+
+func TestBuildColumnsIncludesSelectionAndCoreFields(t *testing.T) {
+	items := []Item{
+		{ID: "1", Title: "Alpha", Kind: KindTask, Raw: map[string]any{"status": "Open"}},
+	}
+	cols := BuildColumns(SubjectTasks, items)
+	if cols[0].Key != "_sel" {
+		t.Fatalf("first column should be selection, got %q", cols[0].Key)
+	}
+}

cmd/office/model/formfields.go

@@ -0,0 +1,115 @@
+package model
+
+import "fmt"
+
+// FormFields holds editable/display fields loaded from API detail.
+type FormFields struct {
+	PrimaryLabel   string
+	SecondaryLabel string
+	Primary        string
+	Secondary      string
+	ReadOnly       bool
+}
+
+// KindHeading returns a short label for the detail pane header.
+func KindHeading(kind Kind, id string) string {
+	return fmt.Sprintf("%s %s", kindLabel(kind), id)
+}
+
+func kindLabel(kind Kind) string {
+	switch kind {
+	case KindProject:
+		return "Project"
+	case KindTask:
+		return "Task"
+	case KindCRMTask:
+		return "CRM task"
+	case KindContact:
+		return "Contact"
+	case KindOpportunity:
+		return "Deal"
+	case KindCase:
+		return "Case"
+	case KindMail:
+		return "Mail"
+	case KindEvent:
+		return "Event"
+	case KindCalendar:
+		return "Calendar"
+	case KindFile:
+		return "Document"
+	case KindUser:
+		return "User"
+	default:
+		return string(kind)
+	}
+}
+
+// FormFieldsFromRaw maps API detail JSON to form fields for the right pane.
+func FormFieldsFromRaw(kind Kind, raw map[string]any) FormFields {
+	switch kind {
+	case KindMail:
+		body := strRaw(raw, "body")
+		if body == "" {
+			body = strRaw(raw, "htmlBody")
+		}
+		return FormFields{
+			PrimaryLabel: "Subject", SecondaryLabel: "Body",
+			Primary: strRaw(raw, "subject"), Secondary: body,
+			ReadOnly: true,
+		}
+	case KindUser:
+		return FormFields{
+			PrimaryLabel: "Name", SecondaryLabel: "Email",
+			Primary: strRaw(raw, "displayName"), Secondary: strRaw(raw, "email"),
+			ReadOnly: true,
+		}
+	case KindContact:
+		name := strRaw(raw, "displayName")
+		if name == "" {
+			name = strRaw(raw, "title")
+		}
+		return FormFields{
+			PrimaryLabel: "Name", SecondaryLabel: "About",
+			Primary: name, Secondary: strRaw(raw, "about"),
+			ReadOnly: true,
+		}
+	case KindEvent, KindCalendar:
+		return FormFields{
+			PrimaryLabel: "Title", SecondaryLabel: "Description",
+			Primary: strRaw(raw, "title"), Secondary: strRaw(raw, "description"),
+			ReadOnly: true,
+		}
+	default:
+		title := strRaw(raw, "title")
+		if title == "" {
+			title = strRaw(raw, "name")
+		}
+		if title == "" {
+			title = strRaw(raw, "subject")
+		}
+		return FormFields{
+			PrimaryLabel: "Title", SecondaryLabel: "Description",
+			Primary: title, Secondary: strRaw(raw, "description"),
+			ReadOnly: kind != KindTask && kind != KindProject,
+		}
+	}
+}
+
+func strRaw(m map[string]any, key string) string {
+	if m == nil {
+		return ""
+	}
+	if v, ok := m[key].(string); ok {
+		return v
+	}
+	if m[key] == nil {
+		return ""
+	}
+	return fmt.Sprint(m[key])
+}
+
+// IsDocumentKind is true when the right pane should show file content, not a form.
+func IsDocumentKind(kind Kind) bool {
+	return kind == KindFile
+}

cmd/office/model/formfields_test.go

@@ -0,0 +1,20 @@
+package model
+
+import "testing"
+
+func TestFormFieldsFromRawMail(t *testing.T) {
+	raw := map[string]any{"subject": "Hi", "body": "Hello"}
+	f := FormFieldsFromRaw(KindMail, raw)
+	if f.Primary != "Hi" || f.Secondary != "Hello" || !f.ReadOnly {
+		t.Fatalf("unexpected mail fields: %+v", f)
+	}
+}
+
+func TestIsDocumentKind(t *testing.T) {
+	if !IsDocumentKind(KindFile) {
+		t.Fatal("file should be document")
+	}
+	if IsDocumentKind(KindTask) {
+		t.Fatal("task should be form")
+	}
+}

cmd/office/model/item.go

@@ -0,0 +1,126 @@
+package model
+
+// Kind identifies the OnlyOffice entity type for list items and preview routing.
+type Kind string
+
+const (
+	KindProject     Kind = "project"
+	KindTask        Kind = "task"
+	KindContact     Kind = "contact"
+	KindOpportunity Kind = "opportunity"
+	KindCase        Kind = "case"
+	KindCRMTask     Kind = "crm_task"
+	KindMail        Kind = "mail"
+	KindEvent       Kind = "event"
+	KindCalendar    Kind = "calendar"
+	KindFile        Kind = "file"
+	KindUser        Kind = "user"
+)
+
+// Subject identifies a menu leaf / list source.
+type Subject string
+
+const (
+	SubjectProjects      Subject = "projects"
+	SubjectTasks         Subject = "tasks"
+	SubjectCalendars     Subject = "calendars"
+	SubjectEvents        Subject = "events"
+	SubjectContacts      Subject = "contacts"
+	SubjectPersons       Subject = "persons"
+	SubjectCompanies     Subject = "companies"
+	SubjectOpportunities Subject = "opportunities"
+	SubjectCases         Subject = "cases"
+	SubjectCRMTasks      Subject = "crm_tasks"
+	SubjectMailInbox     Subject = "mail_inbox"
+	SubjectMailSent      Subject = "mail_sent"
+	SubjectMailDrafts    Subject = "mail_drafts"
+	SubjectMailTrash     Subject = "mail_trash"
+	SubjectMailSpam      Subject = "mail_spam"
+	SubjectProjectFiles  Subject = "project_files"
+	SubjectTaskFiles     Subject = "task_files"
+	SubjectUsers         Subject = "users"
+)
+
+// FocusPane is which column has keyboard focus.
+type FocusPane int
+
+const (
+	FocusMenu FocusPane = iota
+	FocusList
+	FocusPreview
+)
+
+// PrevFocusPane cycles preview → list → menu → preview.
+func PrevFocusPane(p FocusPane) FocusPane {
+	switch p {
+	case FocusMenu:
+		return FocusPreview
+	case FocusList:
+		return FocusMenu
+	default:
+		return FocusList
+	}
+}
+
+// NextFocusPane cycles menu → list → preview → menu.
+func NextFocusPane(p FocusPane) FocusPane {
+	switch p {
+	case FocusMenu:
+		return FocusList
+	case FocusList:
+		return FocusPreview
+	default:
+		return FocusMenu
+	}
+}
+
+// Item is one row in the center list pane.
+type Item struct {
+	ID, Title, Subtitle string
+	Kind                Kind
+	Raw                 map[string]any
+	Selected            bool
+}
+
+// Selection tracks multi-selected item IDs within the current subject.
+type Selection struct {
+	ids map[string]struct{}
+}
+
+// NewSelection returns an empty selection set.
+func NewSelection() *Selection {
+	return &Selection{ids: make(map[string]struct{})}
+}
+
+// Toggle flips selection on items[idx] and updates the ID set.
+func (s *Selection) Toggle(items *[]Item, idx int) {
+	if idx < 0 || idx >= len(*items) {
+		return
+	}
+	it := &(*items)[idx]
+	it.Selected = !it.Selected
+	if it.Selected {
+		s.ids[it.ID] = struct{}{}
+	} else {
+		delete(s.ids, it.ID)
+	}
+}
+
+// Count returns the number of selected items.
+func (s *Selection) Count() int {
+	return len(s.ids)
+}
+
+// Clear removes all selections.
+func (s *Selection) Clear() {
+	s.ids = make(map[string]struct{})
+}
+
+// IDs returns selected item IDs in stable order (map iteration order is fine for display).
+func (s *Selection) IDs() []string {
+	out := make([]string, 0, len(s.ids))
+	for id := range s.ids {
+		out = append(out, id)
+	}
+	return out
+}

cmd/office/model/item_test.go

@@ -0,0 +1,45 @@
+package model_test
+
+import (
+	"testing"
+
+	"github.com/eslider/go-onlyoffice/cmd/office/model"
+)
+
+func TestSelectionToggle(t *testing.T) {
+	items := []model.Item{
+		{ID: "1", Title: "A"},
+		{ID: "2", Title: "B"},
+	}
+	sel := model.NewSelection()
+	if sel.Count() != 0 {
+		t.Fatalf("initial count=%d", sel.Count())
+	}
+	sel.Toggle(&items, 0)
+	if !items[0].Selected || sel.Count() != 1 {
+		t.Fatalf("after toggle 0: selected=%v count=%d", items[0].Selected, sel.Count())
+	}
+	sel.Toggle(&items, 0)
+	if items[0].Selected || sel.Count() != 0 {
+		t.Fatalf("after second toggle: selected=%v count=%d", items[0].Selected, sel.Count())
+	}
+}
+
+func TestSelectionClearOnSubjectChange(t *testing.T) {
+	items := []model.Item{{ID: "1", Title: "A", Selected: true}}
+	sel := model.NewSelection()
+	sel.Toggle(&items, 0)
+	sel.Clear()
+	if sel.Count() != 0 {
+		t.Fatalf("count=%d after clear", sel.Count())
+	}
+}
+
+func TestNextFocusPane(t *testing.T) {
+	if got := model.NextFocusPane(model.FocusMenu); got != model.FocusList {
+		t.Fatalf("menu->list got %v", got)
+	}
+	if got := model.NextFocusPane(model.FocusPreview); got != model.FocusMenu {
+		t.Fatalf("preview->menu got %v", got)
+	}
+}

cmd/office/model/nav.go

@@ -0,0 +1,209 @@
+package model
+
+// ListSpec tells the fetch layer what to load when a nav leaf is active.
+type ListSpec struct {
+	Subject   Subject
+	ProjectID string
+	TaskID    string
+}
+
+// NavNode is one row in the navigation tree.
+type NavNode struct {
+	ID       string
+	Label    string
+	Branch   bool
+	List     *ListSpec // set on leaves that open the center list
+	ParentID string
+}
+
+// NavTree is a hierarchical navigator; the center list loads only on leaves.
+type NavTree struct {
+	nodes    map[string]NavNode
+	roots    []string
+	children map[string][]string
+	expanded map[string]bool
+	cursor   int
+	visible  []string
+}
+
+// DefaultNavTree returns the OnlyOffice module tree (static skeleton).
+func DefaultNavTree() *NavTree {
+	t := &NavTree{
+		nodes:    make(map[string]NavNode),
+		children: make(map[string][]string),
+		expanded: make(map[string]bool),
+	}
+	add := func(id, label, parent string, branch bool, list *ListSpec) {
+		t.nodes[id] = NavNode{ID: id, Label: label, Branch: branch, List: list, ParentID: parent}
+		if parent == "" {
+			t.roots = append(t.roots, id)
+		} else {
+			t.children[parent] = append(t.children[parent], id)
+		}
+	}
+
+	add("projects", "Projects", "", true, nil)
+	add("projects.browse", "Browse", "projects", true, nil)
+	add("projects.browse.all", "All projects", "projects.browse", false, &ListSpec{Subject: SubjectProjects})
+	add("projects.browse.tasks", "All tasks", "projects.browse", false, &ListSpec{Subject: SubjectTasks})
+	add("projects.dynamic", "By project", "projects", true, nil)
+
+	add("calendar", "Calendar", "", true, nil)
+	add("calendar.cals", "Calendars", "calendar", false, &ListSpec{Subject: SubjectCalendars})
+	add("calendar.events", "Events", "calendar", false, &ListSpec{Subject: SubjectEvents})
+
+	add("crm", "CRM", "", true, nil)
+	add("crm.contacts", "Contacts", "crm", false, &ListSpec{Subject: SubjectContacts})
+	add("crm.persons", "Persons", "crm", false, &ListSpec{Subject: SubjectPersons})
+	add("crm.companies", "Companies", "crm", false, &ListSpec{Subject: SubjectCompanies})
+	add("crm.opportunities", "Opportunities", "crm", false, &ListSpec{Subject: SubjectOpportunities})
+	add("crm.cases", "Cases", "crm", false, &ListSpec{Subject: SubjectCases})
+	add("crm.tasks", "CRM tasks", "crm", false, &ListSpec{Subject: SubjectCRMTasks})
+
+	add("mail", "Mail", "", true, nil)
+	add("mail.inbox", "Inbox", "mail", false, &ListSpec{Subject: SubjectMailInbox})
+	add("mail.sent", "Sent", "mail", false, &ListSpec{Subject: SubjectMailSent})
+	add("mail.drafts", "Drafts", "mail", false, &ListSpec{Subject: SubjectMailDrafts})
+	add("mail.trash", "Trash", "mail", false, &ListSpec{Subject: SubjectMailTrash})
+	add("mail.spam", "Spam", "mail", false, &ListSpec{Subject: SubjectMailSpam})
+
+	add("users", "Users", "", true, nil)
+	add("users.dir", "Directory", "users", false, &ListSpec{Subject: SubjectUsers})
+
+	t.rebuildVisible()
+	return t
+}
+
+// RootLabels returns top-level labels (for tests).
+func (t *NavTree) RootLabels() []string {
+	out := make([]string, len(t.roots))
+	for i, id := range t.roots {
+		out[i] = t.nodes[id].Label
+	}
+	return out
+}
+
+func (t *NavTree) Cursor() int { return t.cursor }
+
+func (t *NavTree) VisibleCount() int { return len(t.visible) }
+
+func (t *NavTree) NodeAtVisible(i int) (NavNode, bool) {
+	if i < 0 || i >= len(t.visible) {
+		return NavNode{}, false
+	}
+	n, ok := t.nodes[t.visible[i]]
+	return n, ok
+}
+
+func (t *NavTree) DepthAtVisible(i int) int {
+	if i < 0 || i >= len(t.visible) {
+		return 0
+	}
+	depth := 0
+	id := t.visible[i]
+	for {
+		n, ok := t.nodes[id]
+		if !ok || n.ParentID == "" {
+			break
+		}
+		depth++
+		id = n.ParentID
+	}
+	return depth
+}
+
+func (t *NavTree) IsExpandable(i int) bool {
+	n, ok := t.NodeAtVisible(i)
+	if !ok {
+		return false
+	}
+	return n.Branch && len(t.children[n.ID]) > 0
+}
+
+func (t *NavTree) IsExpanded(i int) bool {
+	n, ok := t.NodeAtVisible(i)
+	if !ok {
+		return false
+	}
+	return t.expanded[n.ID]
+}
+
+func (t *NavTree) ToggleExpand(i int) {
+	n, ok := t.NodeAtVisible(i)
+	if !ok || !n.Branch {
+		return
+	}
+	if t.expanded[n.ID] {
+		delete(t.expanded, n.ID)
+	} else {
+		t.expanded[n.ID] = true
+	}
+	t.rebuildVisible()
+}
+
+func (t *NavTree) MoveUp() { t.SetCursor(t.cursor - 1) }
+func (t *NavTree) MoveDown() { t.SetCursor(t.cursor + 1) }
+
+func (t *NavTree) SetCursor(c int) {
+	if c < 0 {
+		c = 0
+	}
+	if c >= len(t.visible) {
+		c = len(t.visible) - 1
+	}
+	if c < 0 {
+		c = 0
+	}
+	t.cursor = c
+}
+
+// CurrentListSpec returns the list spec when the cursor is on a leaf.
+func (t *NavTree) CurrentListSpec() (*ListSpec, bool) {
+	n, ok := t.NodeAtVisible(t.cursor)
+	if !ok || n.List == nil {
+		return nil, false
+	}
+	spec := *n.List
+	return &spec, true
+}
+
+// Activate expands a branch or returns leaf list spec on Enter.
+func (t *NavTree) Activate() (*ListSpec, bool) {
+	n, ok := t.NodeAtVisible(t.cursor)
+	if !ok {
+		return nil, false
+	}
+	if n.Branch {
+		t.expanded[n.ID] = true
+		t.rebuildVisible()
+		return nil, false
+	}
+	if n.List != nil {
+		spec := *n.List
+		return &spec, true
+	}
+	return nil, false
+}
+
+func (t *NavTree) rebuildVisible() {
+	t.visible = t.visible[:0]
+	var walk func(id string, depth int)
+	walk = func(id string, depth int) {
+		t.visible = append(t.visible, id)
+		if !t.expanded[id] {
+			return
+		}
+		for _, child := range t.children[id] {
+			walk(child, depth+1)
+		}
+	}
+	for _, root := range t.roots {
+		walk(root, 0)
+	}
+	if t.cursor >= len(t.visible) {
+		t.cursor = len(t.visible) - 1
+	}
+	if t.cursor < 0 {
+		t.cursor = 0
+	}
+}

cmd/office/model/nav_projects.go

@@ -0,0 +1,31 @@
+package model
+
+import "strings"
+
+// InjectProjectNodes adds dynamic project branches under projects.dynamic.
+func (t *NavTree) InjectProjectNodes(projects []Item) {
+	// Drop prior dynamic project.* nodes.
+	for id := range t.nodes {
+		if strings.HasPrefix(id, "project.") {
+			delete(t.nodes, id)
+		}
+	}
+	t.children["projects.dynamic"] = nil
+	for _, p := range projects {
+		pid := "project." + p.ID
+		t.nodes[pid] = NavNode{ID: pid, Label: p.Title, Branch: true, ParentID: "projects.dynamic"}
+		t.children["projects.dynamic"] = append(t.children["projects.dynamic"], pid)
+		taskID := pid + ".tasks"
+		fileID := pid + ".files"
+		t.nodes[taskID] = NavNode{
+			ID: taskID, Label: "Tasks", Branch: false, ParentID: pid,
+			List: &ListSpec{Subject: SubjectTasks, ProjectID: p.ID},
+		}
+		t.nodes[fileID] = NavNode{
+			ID: fileID, Label: "Files", Branch: false, ParentID: pid,
+			List: &ListSpec{Subject: SubjectProjectFiles, ProjectID: p.ID},
+		}
+		t.children[pid] = []string{taskID, fileID}
+	}
+	t.rebuildVisible()
+}

cmd/office/model/nav_test.go

@@ -0,0 +1,75 @@
+package model_test
+
+import (
+	"testing"
+
+	"github.com/eslider/go-onlyoffice/cmd/office/model"
+)
+
+func TestNavTreeHasExpectedRoots(t *testing.T) {
+	tree := model.DefaultNavTree()
+	roots := tree.RootLabels()
+	want := []string{"Projects", "Calendar", "CRM", "Mail", "Users"}
+	if len(roots) != len(want) {
+		t.Fatalf("roots=%v want %v", roots, want)
+	}
+	for i, w := range want {
+		if roots[i] != w {
+			t.Fatalf("root[%d]=%q want %q", i, roots[i], w)
+		}
+	}
+}
+
+func TestNavExpandCollapse(t *testing.T) {
+	tree := model.DefaultNavTree()
+	if !tree.IsExpandable(0) {
+		t.Fatal("Projects should be expandable")
+	}
+	tree.ToggleExpand(0)
+	if !tree.IsExpanded(0) {
+		t.Fatal("Projects should expand")
+	}
+	tree.ToggleExpand(0)
+	if tree.IsExpanded(0) {
+		t.Fatal("Projects should collapse")
+	}
+}
+
+func TestNavLeafReturnsListSpec(t *testing.T) {
+	tree := model.DefaultNavTree()
+	tree.ToggleExpand(0) // Projects
+	tree.ToggleExpand(1) // Browse
+	// Find "All projects" leaf cursor
+	var found int = -1
+	for i := 0; i < tree.VisibleCount(); i++ {
+		n, ok := tree.NodeAtVisible(i)
+		if ok && n.List != nil && n.List.Subject == model.SubjectProjects {
+			found = i
+			break
+		}
+	}
+	if found < 0 {
+		t.Fatal("all projects leaf not found")
+	}
+	tree.SetCursor(found)
+	spec, ok := tree.CurrentListSpec()
+	if !ok || spec.Subject != model.SubjectProjects {
+		t.Fatalf("spec=%v ok=%v", spec, ok)
+	}
+}
+
+func TestPrevFocusPane(t *testing.T) {
+	if got := model.PrevFocusPane(model.FocusList); got != model.FocusMenu {
+		t.Fatalf("got %v", got)
+	}
+	if got := model.PrevFocusPane(model.FocusMenu); got != model.FocusPreview {
+		t.Fatalf("got %v", got)
+	}
+}
+
+func TestActionsForContact(t *testing.T) {
+	acts := model.ActionsFor(model.KindContact)
+	if len(acts) != 1 || acts[0].ID != model.ActionDelete {
+		t.Fatalf("expected delete only, got %v", acts)
+	}
+}

cmd/office/preview/convert.go

@@ -0,0 +1,10 @@
+package preview
+
+import (
+	md "github.com/JohannesKaufmann/html-to-markdown/v2"
+)
+
+// HTMLToMarkdown converts Document Server HTML output to markdown for TUI preview.
+func HTMLToMarkdown(html string) (string, error) {
+	return md.ConvertString(html)
+}

cmd/office/preview/convert_test.go

@@ -0,0 +1,19 @@
+package preview_test
+
+import (
+	"strings"
+	"testing"
+
+	"github.com/eslider/go-onlyoffice/cmd/office/preview"
+)
+
+func TestHTMLToMarkdown(t *testing.T) {
+	html := `<h1>Title</h1><p>Body text</p>`
+	md, err := preview.HTMLToMarkdown(html)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if !strings.Contains(md, "Title") || !strings.Contains(md, "Body text") {
+		t.Fatalf("conversion failed: %q", md)
+	}
+}

cmd/office/preview/entity.go

@@ -0,0 +1,168 @@
+package preview
+
+import (
+	"fmt"
+	"html"
+	"regexp"
+	"strings"
+)
+
+var htmlTagRe = regexp.MustCompile(`<[^>]+>`)
+
+// ContactMarkdown formats a CRM contact or company for preview.
+func ContactMarkdown(m map[string]any) string {
+	name := str(m, "displayName")
+	if name == "" {
+		name = strings.TrimSpace(str(m, "firstName") + " " + str(m, "lastName"))
+	}
+	kind := "Person"
+	if boolVal(m, "isCompany") {
+		kind = "Company"
+	}
+	var b strings.Builder
+	fmt.Fprintf(&b, "# %s\n\n", name)
+	fmt.Fprintf(&b, "**Type:** %s\n\n", kind)
+	if about := str(m, "about"); about != "" {
+		fmt.Fprintf(&b, "## About\n\n%s\n\n", about)
+	}
+	appendInfoList(&b, m)
+	return strings.TrimSpace(b.String()) + "\n"
+}
+
+// OpportunityMarkdown formats a CRM deal for preview.
+func OpportunityMarkdown(m map[string]any) string {
+	var b strings.Builder
+	fmt.Fprintf(&b, "# %s\n\n", str(m, "title"))
+	if v := m["bidValue"]; v != nil {
+		fmt.Fprintf(&b, "**Value:** %v %s\n\n", v, str(m, "bidCurrency"))
+	}
+	if d := str(m, "description"); d != "" {
+		fmt.Fprintf(&b, "## Description\n\n%s\n\n", d)
+	}
+	return strings.TrimSpace(b.String()) + "\n"
+}
+
+// MailMarkdown formats a mail message for preview.
+func MailMarkdown(m map[string]any) string {
+	var b strings.Builder
+	fmt.Fprintf(&b, "# %s\n\n", str(m, "subject"))
+	fmt.Fprintf(&b, "**From:** %s\n\n", str(m, "from"))
+	if to := str(m, "to"); to != "" {
+		fmt.Fprintf(&b, "**To:** %s\n\n", to)
+	}
+	body := str(m, "body")
+	if body == "" {
+		body = str(m, "htmlBody")
+	}
+	body = stripHTML(body)
+	if body != "" {
+		fmt.Fprintf(&b, "## Body\n\n%s\n\n", body)
+	}
+	return strings.TrimSpace(b.String()) + "\n"
+}
+
+// EventMarkdown formats a calendar event for preview.
+func EventMarkdown(m map[string]any) string {
+	var b strings.Builder
+	fmt.Fprintf(&b, "# %s\n\n", str(m, "title"))
+	fmt.Fprintf(&b, "**Start:** %s\n\n", str(m, "start"))
+	fmt.Fprintf(&b, "**End:** %s\n\n", str(m, "end"))
+	if d := str(m, "description"); d != "" {
+		fmt.Fprintf(&b, "## Description\n\n%s\n\n", d)
+	}
+	return strings.TrimSpace(b.String()) + "\n"
+}
+
+// TaskMarkdown formats a project or CRM task for preview.
+func TaskMarkdown(m map[string]any) string {
+	var b strings.Builder
+	fmt.Fprintf(&b, "# %s\n\n", str(m, "title"))
+	if s := str(m, "status"); s != "" {
+		fmt.Fprintf(&b, "**Status:** %s\n\n", s)
+	}
+	if d := str(m, "deadline"); d != "" {
+		fmt.Fprintf(&b, "**Deadline:** %s\n\n", d)
+	}
+	if desc := str(m, "description"); desc != "" {
+		fmt.Fprintf(&b, "## Description\n\n%s\n\n", desc)
+	}
+	return strings.TrimSpace(b.String()) + "\n"
+}
+
+// ProjectMarkdown formats a project for preview.
+func ProjectMarkdown(m map[string]any) string {
+	var b strings.Builder
+	title := str(m, "title")
+	if title == "" {
+		title = str(m, "name")
+	}
+	fmt.Fprintf(&b, "# %s\n\n", title)
+	if s := str(m, "status"); s != "" {
+		fmt.Fprintf(&b, "**Status:** %s\n\n", s)
+	}
+	if d := str(m, "description"); d != "" {
+		fmt.Fprintf(&b, "## Description\n\n%s\n\n", d)
+	}
+	return strings.TrimSpace(b.String()) + "\n"
+}
+
+// EntityMarkdown picks a formatter based on item kind.
+func EntityMarkdown(kind string, m map[string]any) string {
+	switch kind {
+	case "contact", "person", "company":
+		return ContactMarkdown(m)
+	case "opportunity":
+		return OpportunityMarkdown(m)
+	case "mail":
+		return MailMarkdown(m)
+	case "event":
+		return EventMarkdown(m)
+	case "task", "crm_task":
+		return TaskMarkdown(m)
+	case "project":
+		return ProjectMarkdown(m)
+	default:
+		return mapToMarkdown(m)
+	}
+}
+
+func mapToMarkdown(m map[string]any) string {
+	var b strings.Builder
+	b.WriteString("# Details\n\n")
+	for k, v := range m {
+		fmt.Fprintf(&b, "- **%s:** %v\n", k, v)
+	}
+	return b.String()
+}
+
+func appendInfoList(b *strings.Builder, m map[string]any) {
+	if infos, ok := m["contactInfos"].([]any); ok && len(infos) > 0 {
+		b.WriteString("## Contact info\n\n")
+		for _, raw := range infos {
+			if row, ok := raw.(map[string]any); ok {
+				fmt.Fprintf(b, "- %s: %s\n", str(row, "infoType"), str(row, "data"))
+			}
+		}
+		b.WriteString("\n")
+	}
+}
+
+func stripHTML(s string) string {
+	s = htmlTagRe.ReplaceAllString(s, "")
+	return strings.TrimSpace(html.UnescapeString(s))
+}
+
+func str(m map[string]any, key string) string {
+	if v, ok := m[key].(string); ok {
+		return v
+	}
+	if m[key] == nil {
+		return ""
+	}
+	return fmt.Sprint(m[key])
+}
+
+func boolVal(m map[string]any, key string) bool {
+	v, ok := m[key].(bool)
+	return ok && v
+}

cmd/office/preview/preview_integration_test.go

@@ -0,0 +1,214 @@
+//go:build integration
+
+package preview_test
+
+import (
+	"context"
+	"os"
+	"strings"
+	"testing"
+
+	"github.com/eslider/go-onlyoffice/cmd/internal/bootstrap"
+	"github.com/eslider/go-onlyoffice/cmd/office/fetch"
+	"github.com/eslider/go-onlyoffice/cmd/office/model"
+	"github.com/eslider/go-onlyoffice/cmd/office/preview"
+)
+
+func skipWithoutLiveAPI(t *testing.T) {
+	t.Helper()
+	if os.Getenv("ONLYOFFICE_URL") == "" && os.Getenv("ONLYOFFICE_HOST") == "" {
+		t.Skip("ONLYOFFICE_URL not set")
+	}
+}
+
+func liveLoader(t *testing.T) (*fetch.Loader, context.Context) {
+	t.Helper()
+	skipWithoutLiveAPI(t)
+	client, err := bootstrap.NewClient(context.Background())
+	if err != nil {
+		t.Fatal(err)
+	}
+	return &fetch.Loader{Client: client}, context.Background()
+}
+
+func TestIntegrationPreviewProjectFromAPI(t *testing.T) {
+	loader, ctx := liveLoader(t)
+	items, err := loader.List(ctx, model.ListSpec{Subject: model.SubjectProjects})
+	if err != nil {
+		t.Fatal(err)
+	}
+	if len(items) == 0 {
+		t.Skip("no projects")
+	}
+	raw, err := loader.Detail(ctx, items[0])
+	if err != nil {
+		t.Fatal(err)
+	}
+	md := preview.EntityMarkdown(string(model.KindProject), raw)
+	if md == "" {
+		t.Fatal("empty markdown")
+	}
+	if !strings.Contains(md, items[0].Title) {
+		t.Fatalf("markdown missing project title %q:\n%s", items[0].Title, md)
+	}
+	rendered, err := preview.RenderMarkdown(md, 80)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if rendered == "" {
+		t.Fatal("glamour produced empty output")
+	}
+}
+
+func TestIntegrationPreviewContactFromAPI(t *testing.T) {
+	loader, ctx := liveLoader(t)
+	items, err := loader.List(ctx, model.ListSpec{Subject: model.SubjectContacts})
+	if err != nil {
+		t.Fatal(err)
+	}
+	if len(items) == 0 {
+		t.Skip("no contacts")
+	}
+	raw, err := loader.Detail(ctx, items[0])
+	if err != nil {
+		t.Fatal(err)
+	}
+	md := preview.ContactMarkdown(raw)
+	if md == "" || !strings.Contains(md, "#") {
+		t.Fatalf("unexpected contact markdown: %q", md)
+	}
+}
+
+func TestIntegrationPreviewOpportunityFromAPI(t *testing.T) {
+	loader, ctx := liveLoader(t)
+	items, err := loader.List(ctx, model.ListSpec{Subject: model.SubjectOpportunities})
+	if err != nil {
+		t.Fatal(err)
+	}
+	if len(items) == 0 {
+		t.Skip("no opportunities")
+	}
+	raw, err := loader.Detail(ctx, items[0])
+	if err != nil {
+		t.Fatal(err)
+	}
+	md := preview.OpportunityMarkdown(raw)
+	if !strings.Contains(md, items[0].Title) {
+		t.Fatalf("markdown missing deal title:\n%s", md)
+	}
+}
+
+func TestIntegrationPreviewMailFromAPI(t *testing.T) {
+	loader, ctx := liveLoader(t)
+	items, err := loader.List(ctx, model.ListSpec{Subject: model.SubjectMailInbox})
+	if err != nil {
+		t.Fatal(err)
+	}
+	if len(items) == 0 {
+		t.Skip("inbox empty")
+	}
+	raw, err := loader.Detail(ctx, items[0])
+	if err != nil {
+		t.Fatal(err)
+	}
+	md := preview.MailMarkdown(raw)
+	if md == "" || !strings.Contains(md, "From:") {
+		t.Fatalf("unexpected mail markdown:\n%s", md)
+	}
+}
+
+func TestIntegrationPreviewEventFromAPI(t *testing.T) {
+	loader, ctx := liveLoader(t)
+	items, err := loader.List(ctx, model.ListSpec{Subject: model.SubjectEvents})
+	if err != nil {
+		t.Fatal(err)
+	}
+	if len(items) == 0 {
+		t.Skip("no events in range")
+	}
+	md := preview.EventMarkdown(items[0].Raw)
+	if !strings.Contains(md, items[0].Title) {
+		t.Fatalf("markdown missing event title:\n%s", md)
+	}
+}
+
+func TestIntegrationPreviewTaskFromAPI(t *testing.T) {
+	loader, ctx := liveLoader(t)
+	items, err := loader.List(ctx, model.ListSpec{Subject: model.SubjectTasks})
+	if err != nil {
+		t.Fatal(err)
+	}
+	if len(items) == 0 {
+		t.Skip("no tasks")
+	}
+	raw, err := loader.Detail(ctx, items[0])
+	if err != nil {
+		t.Fatal(err)
+	}
+	md := preview.TaskMarkdown(raw)
+	if !strings.Contains(md, items[0].Title) {
+		t.Fatalf("markdown missing task title:\n%s", md)
+	}
+}
+
+func TestIntegrationPreviewFileFromAPI(t *testing.T) {
+	skipWithoutLiveAPI(t)
+	if os.Getenv("ONLYOFFICE_PROJECT_ID") == "" {
+		t.Skip("ONLYOFFICE_PROJECT_ID not set")
+	}
+	loader, ctx := liveLoader(t)
+	items, err := loader.List(ctx, model.ListSpec{Subject: model.SubjectProjectFiles})
+	if err != nil {
+		t.Fatal(err)
+	}
+	if len(items) == 0 {
+		t.Skip("no project files")
+	}
+	md, err := loader.PreviewMarkdown(ctx, items[0])
+	if err != nil {
+		t.Fatalf("PreviewMarkdown: %v", err)
+	}
+	if md == "" {
+		t.Fatal("empty preview")
+	}
+	if !strings.Contains(md, items[0].Title) && !strings.Contains(md, "|") && !strings.Contains(md, "```") {
+		t.Fatalf("unexpected file preview for %q:\n%s", items[0].Title, md)
+	}
+}
+
+func TestIntegrationPreviewCSVFromDownloadedFile(t *testing.T) {
+	skipWithoutLiveAPI(t)
+	if os.Getenv("ONLYOFFICE_PROJECT_ID") == "" {
+		t.Skip("ONLYOFFICE_PROJECT_ID not set")
+	}
+	loader, ctx := liveLoader(t)
+	items, err := loader.List(ctx, model.ListSpec{Subject: model.SubjectProjectFiles})
+	if err != nil {
+		t.Fatal(err)
+	}
+	var csvItem *model.Item
+	for i := range items {
+		if strings.HasSuffix(strings.ToLower(items[i].Title), ".csv") {
+			csvItem = &items[i]
+			break
+		}
+	}
+	if csvItem == nil {
+		t.Skip("no csv file in project documents")
+	}
+	var buf strings.Builder
+	n, err := loader.Client.DownloadFile(ctx, csvItem.ID, &buf)
+	if err != nil {
+		t.Fatalf("DownloadFile: %v", err)
+	}
+	if n == 0 {
+		t.Fatal("empty download")
+	}
+	md, err := preview.CSVToMarkdownTable([]byte(buf.String()))
+	if err != nil {
+		t.Fatalf("CSVToMarkdownTable: %v", err)
+	}
+	if !strings.Contains(md, "|") {
+		t.Fatalf("expected pipe table: %q", md)
+	}
+}

cmd/office/preview/render.go

@@ -0,0 +1,23 @@
+package preview
+
+import (
+	"github.com/charmbracelet/glamour"
+)
+
+// RenderMarkdown renders GitHub-flavoured markdown for terminal display.
+func RenderMarkdown(md string, width int) (string, error) {
+	if md == "" {
+		return "", nil
+	}
+	if width < 20 {
+		width = 20
+	}
+	r, err := glamour.NewTermRenderer(
+		glamour.WithAutoStyle(),
+		glamour.WithWordWrap(width),
+	)
+	if err != nil {
+		return "", err
+	}
+	return r.Render(md)
+}

cmd/office/preview/render_test.go

@@ -0,0 +1,31 @@
+package preview_test
+
+import (
+	"strings"
+	"testing"
+
+	"github.com/eslider/go-onlyoffice/cmd/office/preview"
+)
+
+func TestRenderMarkdown(t *testing.T) {
+	out, err := preview.RenderMarkdown("# Hello\n\nWorld", 40)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if out == "" {
+		t.Fatal("empty render output")
+	}
+	if !strings.Contains(strings.ToLower(out), "hello") {
+		t.Fatalf("expected rendered heading: %q", out)
+	}
+}
+
+func TestRenderMarkdownEmpty(t *testing.T) {
+	out, err := preview.RenderMarkdown("", 40)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if strings.TrimSpace(out) != "" {
+		t.Fatalf("expected empty, got %q", out)
+	}
+}

cmd/office/preview/spreadsheet.go

@@ -0,0 +1,65 @@
+package preview
+
+import (
+	"bytes"
+	"encoding/csv"
+	"encoding/json"
+	"fmt"
+	"strings"
+
+	xls "github.com/eslider/go-xls/v2"
+)
+
+// CSVToMarkdownTable parses CSV bytes into a GitHub pipe table markdown string.
+func CSVToMarkdownTable(data []byte) (string, error) {
+	tab, err := parseCSV(data)
+	if err != nil {
+		return "", err
+	}
+	var buf bytes.Buffer
+	if err := xls.WriteMarkdownTable(&buf, tab); err != nil {
+		return "", err
+	}
+	return strings.TrimSpace(buf.String()) + "\n", nil
+}
+
+func parseCSV(data []byte) (xls.Table, error) {
+	r := csv.NewReader(bytes.NewReader(data))
+	r.TrimLeadingSpace = true
+	records, err := r.ReadAll()
+	if err != nil {
+		return xls.Table{}, err
+	}
+	if len(records) == 0 {
+		return xls.Table{}, fmt.Errorf("preview: empty csv")
+	}
+	return xls.Table{Columns: records[0], Rows: records[1:]}, nil
+}
+
+// JSONToMarkdown wraps JSON in a fenced code block for preview.
+func JSONToMarkdown(data []byte) (string, error) {
+	var v any
+	if err := json.Unmarshal(data, &v); err != nil {
+		return "", err
+	}
+	pretty, err := json.MarshalIndent(v, "", "  ")
+	if err != nil {
+		return "", err
+	}
+	return fmt.Sprintf("```json\n%s\n```\n", string(pretty)), nil
+}
+
+// FileBytesToMarkdown picks a preview format based on file extension.
+func FileBytesToMarkdown(name string, data []byte) (string, error) {
+	ext := strings.ToLower(name)
+	switch {
+	case strings.HasSuffix(ext, ".csv"):
+		return CSVToMarkdownTable(data)
+	case strings.HasSuffix(ext, ".json"):
+		return JSONToMarkdown(data)
+	case strings.HasSuffix(ext, ".md"), strings.HasSuffix(ext, ".txt"):
+		return string(data), nil
+	default:
+		return fmt.Sprintf("```\n(binary or unsupported preview for %s, %d bytes)\n```\n", name, len(data)), nil
+	}
+}

cmd/office/preview/spreadsheet_test.go

@@ -0,0 +1,32 @@
+package preview_test
+
+import (
+	"strings"
+	"testing"
+
+	"github.com/eslider/go-onlyoffice/cmd/office/preview"
+)
+
+func TestCSVToMarkdownTable(t *testing.T) {
+	csv := "name,score\nAlice,10\nBob,20\n"
+	md, err := preview.CSVToMarkdownTable([]byte(csv))
+	if err != nil {
+		t.Fatal(err)
+	}
+	if !strings.Contains(md, "name") || !strings.Contains(md, "Alice") {
+		t.Fatalf("table missing data: %q", md)
+	}
+	if !strings.Contains(md, "|") {
+		t.Fatalf("expected pipe table: %q", md)
+	}
+}
+
+func TestJSONToMarkdown(t *testing.T) {
+	md, err := preview.JSONToMarkdown([]byte(`{"a":1}`))
+	if err != nil {
+		t.Fatal(err)
+	}
+	if !strings.Contains(md, "```") || !strings.Contains(md, `"a"`) {
+		t.Fatalf("expected fenced json: %q", md)
+	}
+}

cmd/office/ui/app.go

@@ -0,0 +1,672 @@
+package ui
+
+import (
+	"context"
+	"strings"
+
+	"github.com/charmbracelet/bubbles/viewport"
+	tea "github.com/charmbracelet/bubbletea"
+	"github.com/charmbracelet/lipgloss"
+	onlyoffice "github.com/eslider/go-onlyoffice"
+	"github.com/eslider/go-onlyoffice/cmd/office/fetch"
+	"github.com/eslider/go-onlyoffice/cmd/office/model"
+)
+
+type listLoadedMsg struct {
+	items []model.Item
+	spec  model.ListSpec
+	err   error
+}
+
+type detailLoadedMsg struct {
+	item     model.Item
+	document bool
+	fields   model.FormFields
+	markdown string
+	err      error
+}
+
+type detailSavedMsg struct {
+	item               model.Item
+	title, description string
+	err                error
+}
+
+type actionDoneMsg struct {
+	message string
+	err     error
+}
+
+type navProjectsMsg struct {
+	projects []model.Item
+	err      error
+}
+
+// Model is the root Bubble Tea model for the office TUI.
+type Model struct {
+	client    *onlyoffice.Client
+	loader    *fetch.Loader
+	nav       *model.NavTree
+	listSpec  model.ListSpec
+	hasList   bool
+	items     []model.Item
+	selection *model.Selection
+	focus     model.FocusPane
+	width     int
+	height    int
+	status    string
+	err       string
+	loading   bool
+	menuVP    viewport.Model
+	listTable DataTable
+	detail    DetailPane
+	showMenu  bool
+	showList  bool
+	showDetail bool
+}
+
+// NewModel constructs the TUI with an authenticated client.
+func NewModel(client *onlyoffice.Client) Model {
+	h, w := 24, 80
+	m := Model{
+		client:    client,
+		loader:    &fetch.Loader{Client: client},
+		nav:       model.DefaultNavTree(),
+		selection: model.NewSelection(),
+		focus:     model.FocusMenu,
+		status:    "Tab: pane · row select loads detail · Ctrl+S save · q quit",
+		height:    h,
+		width:     w,
+	}
+	m.menuVP = viewport.New(m.paneInnerWidth(22), m.paneHeight())
+	m.listTable = newDataTable()
+	m.detail = newDetailPane()
+	m.showMenu, m.showList, m.showDetail = true, true, true
+	m.menuVP.MouseWheelEnabled = true
+	return m
+}
+
+func (m Model) Init() tea.Cmd {
+	return tea.Batch(m.loadNavProjectsCmd(), m.detail.BlinkCmd())
+}
+
+func (m Model) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
+	switch msg := msg.(type) {
+	case tea.WindowSizeMsg:
+		m.width = msg.Width
+		m.height = msg.Height
+		m.layoutViewports()
+		m.syncAllContent()
+		return m, nil
+
+	case tea.KeyMsg:
+		key := msg.String()
+		if key == "?" {
+			m.status = helpText()
+			return m, nil
+		}
+		if m.scrollFocusedPane(key) {
+			return m, nil
+		}
+		if m.focus == model.FocusPreview {
+			if cmd, handled := m.handleDetailKey(key, msg); handled {
+				return m, cmd
+			}
+		}
+		action := KeyAction(key, m.focus)
+		if action == ActionNone && (key == "up" || key == "k") {
+			action = ResolveMoveUp(m.focus)
+		}
+		switch action {
+		case ActionQuit:
+			return m, tea.Quit
+		case ActionNextPane:
+			m.focus = NextVisibleFocus(m.focus, m.paneVis())
+			m.syncPaneFocus()
+			return m, nil
+		case ActionPrevPane:
+			m.focus = PrevVisibleFocus(m.focus, m.paneVis())
+			m.syncPaneFocus()
+			return m, nil
+		case ActionMoveUp:
+			if m.focus == model.FocusPreview {
+				return m.handleDetailMove(-1)
+			}
+			m.moveUp()
+			m.syncFocusedPane()
+			return m, m.onListRowChanged()
+		case ActionMoveDown:
+			if m.focus == model.FocusPreview {
+				return m.handleDetailMove(1)
+			}
+			m.moveDown()
+			m.syncFocusedPane()
+			return m, m.onListRowChanged()
+		case ActionMoveLeft:
+			if m.focus == model.FocusPreview && m.detail.Zone() == detailZoneActions {
+				m.detail.MoveAction(-1)
+				return m, nil
+			}
+			if m.focus == model.FocusList && m.hasList {
+				m.listTable.MoveCol(-1)
+			}
+			return m, nil
+		case ActionMoveRight:
+			if m.focus == model.FocusPreview && m.detail.Zone() == detailZoneActions {
+				m.detail.MoveAction(1)
+				return m, nil
+			}
+			if m.focus == model.FocusList && m.hasList {
+				m.listTable.MoveCol(1)
+			}
+			return m, nil
+		case ActionSort:
+			if m.focus == model.FocusList && m.hasList {
+				m.listTable.ToggleSort()
+			}
+			return m, nil
+		case ActionToggleSelect:
+			if m.hasList {
+				idx := m.listTable.ItemIndex()
+				if idx >= 0 {
+					m.selection.Toggle(&m.items, idx)
+					m.listTable.UpdateItems(m.items)
+				}
+			}
+			return m, nil
+		case ActionFocusDetail:
+			if m.hasList && m.showDetail {
+				m.focus = model.FocusPreview
+				m.syncPaneFocus()
+				m.detail.FocusContent()
+				return m, m.onListRowChanged()
+			}
+			return m, nil
+		case ActionToggleMenuPane:
+			m.togglePane(1)
+			return m, nil
+		case ActionToggleListPane:
+			m.togglePane(2)
+			return m, nil
+		case ActionToggleDetailPane:
+			m.togglePane(3)
+			return m, nil
+		case ActionRefresh:
+			if m.hasList {
+				m.loading = true
+				return m, m.loadListCmd(m.listSpec)
+			}
+			return m, nil
+		}
+		if m.focus == model.FocusMenu {
+			switch key {
+			case " ":
+				m.nav.ToggleExpand(m.nav.Cursor())
+				m.syncMenuContent()
+				return m, nil
+			case "enter":
+				if spec, ok := m.nav.Activate(); ok {
+					return m.withList(*spec)
+				}
+				m.syncMenuContent()
+				return m, nil
+			case "right", "l":
+				if spec, ok := m.nav.CurrentListSpec(); ok {
+					return m.withList(*spec)
+				}
+				m.nav.Activate()
+				m.syncMenuContent()
+				return m, nil
+			}
+		}
+
+	case listLoadedMsg:
+		m.loading = false
+		if msg.err != nil {
+			m.err = msg.err.Error()
+			m.items = nil
+			m.hasList = false
+			m.listTable.Clear()
+			m.detail.Clear()
+		} else {
+			m.err = ""
+			m.items = msg.items
+			m.listSpec = msg.spec
+			m.hasList = true
+			m.listTable.SetData(m.listSpec, m.items)
+		}
+		return m, m.onListRowChanged()
+
+	case detailLoadedMsg:
+		m.loading = false
+		if msg.err != nil {
+			m.err = msg.err.Error()
+			m.detail.Clear()
+		} else {
+			pw := m.paneLayout()
+			w := pw.Detail - 4
+			if w < 20 {
+				w = 20
+			}
+			if msg.document {
+				m.detail.LoadDocument(msg.item, msg.markdown, w)
+			} else {
+				m.detail.LoadForm(msg.item, msg.fields)
+			}
+			m.detail.SetFocused(m.focus == model.FocusPreview)
+			m.err = ""
+		}
+		return m, nil
+
+	case detailSavedMsg:
+		m.loading = false
+		if msg.err != nil {
+			m.err = msg.err.Error()
+		} else {
+			m.updateItemAfterSave(msg.item, msg.title, msg.description)
+			fields, _ := m.loader.DetailForm(context.Background(), msg.item)
+			fields.Primary = msg.title
+			fields.Secondary = msg.description
+			m.detail.LoadForm(msg.item, fields)
+			m.detail.SetFocused(m.focus == model.FocusPreview)
+			m.status = "Saved"
+			m.err = ""
+		}
+		return m, nil
+
+	case actionDoneMsg:
+		m.loading = false
+		if msg.err != nil {
+			m.err = msg.err.Error()
+		} else {
+			m.status = msg.message
+			m.err = ""
+			if m.hasList {
+				m.loading = true
+				return m, m.loadListCmd(m.listSpec)
+			}
+		}
+		return m, nil
+
+	case navProjectsMsg:
+		if msg.err == nil {
+			m.nav.InjectProjectNodes(msg.projects)
+			m.syncMenuContent()
+		}
+		return m, nil
+
+	case tea.MouseMsg:
+		var cmd tea.Cmd
+		switch m.focus {
+		case model.FocusMenu:
+			m.menuVP, cmd = m.menuVP.Update(msg)
+		case model.FocusList:
+			cmd = m.listTable.Update(msg)
+		case model.FocusPreview:
+			cmd = m.detail.Update(msg)
+		}
+		return m, cmd
+	}
+
+	var cmd tea.Cmd
+	switch m.focus {
+	case model.FocusMenu:
+		m.menuVP, cmd = m.menuVP.Update(msg)
+	case model.FocusList:
+		cmd = m.listTable.Update(msg)
+	case model.FocusPreview:
+		cmd = m.detail.Update(msg)
+	}
+	return m, cmd
+}
+
+func (m *Model) handleDetailKey(key string, msg tea.KeyMsg) (tea.Cmd, bool) {
+	switch key {
+	case "tab", "shift+tab", "backtab":
+		m.detail.ToggleZone()
+		return nil, true
+	case "ctrl+s":
+		m.loading = true
+		return m.saveDetailCmd(), true
+	case "enter":
+		if m.detail.Zone() == detailZoneActions {
+			act, ok := m.detail.SelectedAction()
+			if !ok {
+				return nil, true
+			}
+			m.loading = true
+			if act.ID == model.ActionSave {
+				return m.saveDetailCmd(), true
+			}
+			return m.executeActionCmd(act.ID, m.detail.Item()), true
+		}
+	}
+	if m.detail.Zone() == detailZoneContent {
+		return m.detail.Update(msg), true
+	}
+	return nil, false
+}
+
+func (m Model) handleDetailMove(delta int) (Model, tea.Cmd) {
+	if m.detail.Zone() == detailZoneActions {
+		m.detail.MoveAction(delta)
+		return m, nil
+	}
+	if delta < 0 {
+		m.detail.form.FocusPrev()
+	} else {
+		m.detail.form.FocusNext()
+	}
+	return m, nil
+}
+
+func (m Model) View() string {
+	if m.width == 0 {
+		return "Loading…\n"
+	}
+	pw := m.paneLayout()
+	h := m.paneHeight() + 2
+	var parts []string
+	if pw.Visibility.Menu {
+		menuStyle := paneStyle(m.focus == model.FocusMenu).Width(pw.Menu).Height(h)
+		parts = append(parts, menuStyle.Render(m.menuVP.View()))
+	}
+	if pw.Visibility.List {
+		listStyle := paneStyle(m.focus == model.FocusList).Width(pw.List).Height(h)
+		parts = append(parts, listStyle.Render(m.listTable.View()))
+	}
+	if pw.Visibility.Detail {
+		prevStyle := paneStyle(m.focus == model.FocusPreview).Width(pw.Detail).Height(h)
+		parts = append(parts, prevStyle.Render(m.detail.View()))
+	}
+
+	status := m.status
+	if m.loading {
+		status = "Loading…"
+	}
+	if m.err != "" {
+		status = "Error: " + m.err
+	}
+	bar := lipgloss.NewStyle().Foreground(lipgloss.Color("241")).Render(status)
+
+	return lipgloss.JoinHorizontal(lipgloss.Top, parts...) + "\n" + bar
+}
+
+func (m Model) paneVis() PaneVisibility {
+	return PaneVisibility{Menu: m.showMenu, List: m.showList, Detail: m.showDetail}
+}
+
+func (m Model) paneLayout() PaneWidths {
+	return LayoutWidths(m.width, m.paneVis())
+}
+
+func (m *Model) syncPaneFocus() {
+	m.listTable.SetFocused(m.focus == model.FocusList && m.showList)
+	m.detail.SetFocused(m.focus == model.FocusPreview && m.showDetail)
+}
+
+func (m *Model) togglePane(which int) {
+	switch which {
+	case 1:
+		m.showMenu = !m.showMenu
+	case 2:
+		m.showList = !m.showList
+	case 3:
+		m.showDetail = !m.showDetail
+	}
+	if !m.showMenu && !m.showList && !m.showDetail {
+		switch which {
+		case 1:
+			m.showMenu = true
+		case 2:
+			m.showList = true
+		case 3:
+			m.showDetail = true
+		}
+	}
+	if !paneVisible(m.focus, m.paneVis()) {
+		m.focus = firstVisibleFocus(m.paneVis())
+	}
+	m.layoutViewports()
+	m.syncAllContent()
+	m.syncPaneFocus()
+}
+
+func (m Model) withList(spec model.ListSpec) (Model, tea.Cmd) {
+	m.listSpec = spec
+	m.selection.Clear()
+	m.hasList = false
+	m.focus = model.FocusList
+	m.listTable.SetFocused(true)
+	m.detail.Clear()
+	m.loading = true
+	return m, m.loadListCmd(spec)
+}
+
+func (m *Model) layoutViewports() {
+	pw := m.paneLayout()
+	h := m.paneHeight()
+	if pw.Visibility.Menu {
+		m.menuVP.Width = m.paneInnerWidth(pw.Menu)
+		m.menuVP.Height = h
+	}
+	if pw.Visibility.List {
+		m.listTable.SetSize(m.paneInnerWidth(pw.List), h)
+	}
+	if pw.Visibility.Detail {
+		m.detail.SetSize(m.paneInnerWidth(pw.Detail), h)
+	}
+}
+
+func (m *Model) syncAllContent() {
+	m.syncMenuContent()
+	m.syncListTable()
+}
+
+func (m *Model) syncListTable() {
+	if !m.hasList {
+		m.listTable.Clear()
+		return
+	}
+	m.listTable.UpdateItems(m.items)
+}
+
+func (m *Model) syncMenuContent() {
+	var b strings.Builder
+	b.WriteString("Navigation\n\n")
+	menuW := m.menuVP.Width
+	if menuW < 10 {
+		menuW = 20
+	}
+	selectedStyle := lipgloss.NewStyle().
+		Background(lipgloss.Color("62")).
+		Foreground(lipgloss.Color("255"))
+	for i := 0; i < m.nav.VisibleCount(); i++ {
+		n, _ := m.nav.NodeAtVisible(i)
+		depth := m.nav.DepthAtVisible(i)
+		prefix := strings.Repeat("  ", depth)
+		line := prefix + n.Label
+		if m.nav.IsExpandable(i) {
+			if m.nav.IsExpanded(i) {
+				line = prefix + "▾ " + n.Label
+			} else {
+				line = prefix + "▸ " + n.Label
+			}
+		} else if n.List != nil {
+			line = prefix + "• " + n.Label
+		}
+		if i == m.nav.Cursor() && m.focus == model.FocusMenu {
+			line = selectedStyle.Width(menuW).Render(truncateRunes(line, menuW))
+		}
+		b.WriteString(line + "\n")
+	}
+	m.menuVP.SetContent(b.String())
+	syncVPToLine(&m.menuVP, m.nav.Cursor()+2)
+}
+
+func truncateRunes(s string, max int) string {
+	if max <= 0 {
+		return s
+	}
+	r := []rune(s)
+	if len(r) <= max {
+		return s
+	}
+	if max <= 1 {
+		return string(r[:max])
+	}
+	return string(r[:max-1]) + "…"
+}
+
+func (m *Model) syncFocusedPane() {
+	switch m.focus {
+	case model.FocusMenu:
+		m.syncMenuContent()
+	case model.FocusList:
+		m.syncListTable()
+	}
+}
+
+func (m *Model) moveUp() {
+	switch m.focus {
+	case model.FocusMenu:
+		m.nav.MoveUp()
+	case model.FocusList:
+		if m.hasList {
+			m.listTable.MoveRow(-1)
+		}
+	}
+}
+
+func (m *Model) moveDown() {
+	switch m.focus {
+	case model.FocusMenu:
+		m.nav.MoveDown()
+	case model.FocusList:
+		if m.hasList {
+			m.listTable.MoveRow(1)
+		}
+	}
+}
+
+func syncVPToLine(vp *viewport.Model, line int) {
+	if line < 0 {
+		line = 0
+	}
+	max := vp.TotalLineCount()
+	if max == 0 {
+		vp.YOffset = 0
+		return
+	}
+	if line >= max {
+		line = max - 1
+	}
+	if line < vp.YOffset {
+		vp.YOffset = line
+	} else if line >= vp.YOffset+vp.Height {
+		vp.YOffset = line - vp.Height + 1
+	}
+	if vp.YOffset < 0 {
+		vp.YOffset = 0
+	}
+	maxOff := max - vp.Height
+	if maxOff < 0 {
+		maxOff = 0
+	}
+	if vp.YOffset > maxOff {
+		vp.YOffset = maxOff
+	}
+}
+
+func (m *Model) loadListCmd(spec model.ListSpec) tea.Cmd {
+	return func() tea.Msg {
+		ctx := context.Background()
+		items, err := m.loader.List(ctx, spec)
+		return listLoadedMsg{items: items, spec: spec, err: err}
+	}
+}
+
+func (m *Model) executeActionCmd(action model.ActionID, item model.Item) tea.Cmd {
+	return func() tea.Msg {
+		ctx := context.Background()
+		msg, err := m.loader.Execute(ctx, action, item, "")
+		return actionDoneMsg{message: msg, err: err}
+	}
+}
+
+func (m *Model) loadNavProjectsCmd() tea.Cmd {
+	return func() tea.Msg {
+		ctx := context.Background()
+		projects, err := m.loader.LoadProjectsForNav(ctx)
+		return navProjectsMsg{projects: projects, err: err}
+	}
+}
+
+func (m *Model) onListRowChanged() tea.Cmd {
+	if !m.hasList {
+		m.detail.Clear()
+		return nil
+	}
+	idx := m.listTable.ItemIndex()
+	if idx < 0 || idx >= len(m.items) {
+		m.detail.Clear()
+		return nil
+	}
+	it := m.items[idx]
+	if m.detail.LoadedID() == it.ID {
+		return nil
+	}
+	m.loading = true
+	return m.loadDetailCmd(it)
+}
+
+func (m *Model) loadDetailCmd(item model.Item) tea.Cmd {
+	return func() tea.Msg {
+		ctx := context.Background()
+		if model.IsDocumentKind(item.Kind) {
+			md, err := m.loader.PreviewMarkdown(ctx, item)
+			return detailLoadedMsg{item: item, document: true, markdown: md, err: err}
+		}
+		fields, err := m.loader.DetailForm(ctx, item)
+		return detailLoadedMsg{item: item, fields: fields, err: err}
+	}
+}
+
+func (m *Model) saveDetailCmd() tea.Cmd {
+	item := m.detail.Item()
+	title := m.detail.form.Primary()
+	desc := m.detail.form.Secondary()
+	return func() tea.Msg {
+		ctx := context.Background()
+		err := m.loader.SaveItem(ctx, item, title, desc)
+		return detailSavedMsg{item: item, title: title, description: desc, err: err}
+	}
+}
+
+func (m *Model) updateItemAfterSave(item model.Item, title, description string) {
+	for i := range m.items {
+		if m.items[i].ID != item.ID {
+			continue
+		}
+		m.items[i].Title = title
+		if m.items[i].Raw == nil {
+			m.items[i].Raw = map[string]any{}
+		}
+		m.items[i].Raw["title"] = title
+		m.items[i].Raw["description"] = description
+		m.listTable.UpdateItems(m.items)
+		return
+	}
+}
+
+func paneStyle(focused bool) lipgloss.Style {
+	s := lipgloss.NewStyle().Padding(0, 1)
+	if focused {
+		return s.Border(lipgloss.RoundedBorder()).BorderForeground(lipgloss.Color("62"))
+	}
+	return s.Border(lipgloss.NormalBorder()).BorderForeground(lipgloss.Color("238"))
+}
+
+func helpText() string {
+	return "Alt+1/2/3: toggle panes · Tab: focus · v: detail · Ctrl+S: save · q: quit"
+}

cmd/office/ui/app_test.go

@@ -0,0 +1,39 @@
+package ui_test
+
+import (
+	"testing"
+
+	"github.com/eslider/go-onlyoffice/cmd/office/model"
+	"github.com/eslider/go-onlyoffice/cmd/office/ui"
+)
+
+func TestKeyActionMenuDown(t *testing.T) {
+	if got := ui.KeyAction("j", model.FocusMenu); got != ui.ActionMoveDown {
+		t.Fatalf("got %v", got)
+	}
+}
+
+func TestKeyActionShiftTabPrevPane(t *testing.T) {
+	if got := ui.KeyAction("shift+tab", model.FocusList); got != ui.ActionPrevPane {
+		t.Fatalf("got %v", got)
+	}
+}
+
+func TestKeyActionTabOnPreviewDoesNotSwitchPane(t *testing.T) {
+	if got := ui.KeyAction("tab", model.FocusPreview); got != ui.ActionNone {
+		t.Fatalf("tab on preview should stay in pane, got %v", got)
+	}
+}
+
+func TestKeyActionSortAndColumns(t *testing.T) {
+	if got := ui.KeyAction("s", model.FocusList); got != ui.ActionSort {
+		t.Fatalf("got %v", got)
+	}
+}
+
+func TestLayoutWidths(t *testing.T) {
+	menu, list, preview := ui.LayoutWidthsLegacy(120)
+	if menu+list+preview != 120 {
+		t.Fatalf("widths exceed total: %d+%d+%d", menu, list, preview)
+	}
+}

cmd/office/ui/detail.go

@@ -0,0 +1,280 @@
+package ui
+
+import (
+	"strings"
+
+	"github.com/charmbracelet/bubbles/viewport"
+	tea "github.com/charmbracelet/bubbletea"
+	"github.com/charmbracelet/lipgloss"
+	"github.com/eslider/go-onlyoffice/cmd/office/model"
+	"github.com/eslider/go-onlyoffice/cmd/office/preview"
+)
+
+const detailContentRatio = 0.72
+
+type detailMode int
+
+const (
+	detailEmpty detailMode = iota
+	detailDocument
+	detailForm
+)
+
+type detailZone int
+
+const (
+	detailZoneContent detailZone = iota
+	detailZoneActions
+)
+
+// DetailPane is the right column: content top, CRUD actions bottom.
+type DetailPane struct {
+	mode      detailMode
+	item      model.Item
+	loadedID  string
+	actions   []model.ItemAction
+	actionIdx int
+	zone      detailZone
+	focused   bool
+	width     int
+	height    int
+	form      EntityForm
+	docVP     viewport.Model
+	docText   string
+	styles    detailStyles
+}
+
+type detailStyles struct {
+	sep      lipgloss.Style
+	action   lipgloss.Style
+	actionOn lipgloss.Style
+	actionDn lipgloss.Style
+	empty    lipgloss.Style
+}
+
+func newDetailPane() DetailPane {
+	d := DetailPane{
+		form:   newEntityForm(),
+		docVP:  viewport.New(40, 10),
+		styles: newDetailStyles(),
+	}
+	d.docVP.MouseWheelEnabled = true
+	return d
+}
+
+func newDetailStyles() detailStyles {
+	btn := lipgloss.NewStyle().Padding(0, 1).MarginRight(1)
+	return detailStyles{
+		sep:      lipgloss.NewStyle().Foreground(lipgloss.Color("238")),
+		action:   btn.Foreground(lipgloss.Color("252")).Background(lipgloss.Color("236")),
+		actionOn: btn.Bold(true).Foreground(lipgloss.Color("255")).Background(lipgloss.Color("62")),
+		actionDn: btn.Foreground(lipgloss.Color("255")).Background(lipgloss.Color("52")),
+		empty:    lipgloss.NewStyle().Foreground(lipgloss.Color("241")),
+	}
+}
+
+func (d *DetailPane) Clear() {
+	d.mode = detailEmpty
+	d.item = model.Item{}
+	d.loadedID = ""
+	d.actions = nil
+	d.actionIdx = 0
+	d.docText = ""
+	d.form.Clear()
+	d.docVP.SetContent("")
+}
+
+func (d *DetailPane) SetFocused(on bool) {
+	d.focused = on
+	d.form.SetFocused(on && d.zone == detailZoneContent && d.mode == detailForm)
+}
+
+func (d *DetailPane) SetSize(w, h int) {
+	if w < 8 {
+		w = 8
+	}
+	if h < 8 {
+		h = 8
+	}
+	d.width = w
+	d.height = h
+	contentH, _ := d.splitHeights()
+	d.form.SetSize(w, contentH)
+	d.docVP.Width = w
+	d.docVP.Height = contentH
+}
+
+func (d *DetailPane) splitHeights() (contentH, actionH int) {
+	actionH = int(float64(d.height) * (1 - detailContentRatio))
+	if actionH < 3 {
+		actionH = 3
+	}
+	if actionH > 6 {
+		actionH = 6
+	}
+	contentH = d.height - actionH - 1
+	if contentH < 4 {
+		contentH = 4
+	}
+	return contentH, actionH
+}
+
+func (d *DetailPane) LoadForm(item model.Item, fields model.FormFields) {
+	d.mode = detailForm
+	d.item = item
+	d.loadedID = item.ID
+	d.actions = model.ActionsFor(item.Kind)
+	d.actionIdx = 0
+	d.form.Load(item.Kind, item.ID, fields)
+	d.layoutContent()
+}
+
+func (d *DetailPane) LoadDocument(item model.Item, markdown string, renderWidth int) {
+	d.mode = detailDocument
+	d.item = item
+	d.loadedID = item.ID
+	d.actions = model.ActionsFor(item.Kind)
+	d.actionIdx = 0
+	d.form.Clear()
+	text, err := preview.RenderMarkdown(markdown, renderWidth)
+	if err != nil {
+		text = markdown
+	}
+	d.docText = text
+	d.docVP.SetContent(text)
+	d.layoutContent()
+}
+
+func (d *DetailPane) layoutContent() {
+	contentH, _ := d.splitHeights()
+	d.form.SetSize(d.width, contentH)
+	d.docVP.Width = d.width
+	d.docVP.Height = contentH
+}
+
+func (d *DetailPane) LoadedID() string { return d.loadedID }
+
+func (d *DetailPane) Item() model.Item { return d.item }
+
+func (d *DetailPane) Zone() detailZone { return d.zone }
+
+func (d *DetailPane) FocusActions() {
+	d.zone = detailZoneActions
+	d.form.SetFocused(false)
+}
+
+func (d *DetailPane) FocusContent() {
+	d.zone = detailZoneContent
+	d.form.SetFocused(d.focused && d.mode == detailForm)
+}
+
+func (d *DetailPane) ToggleZone() {
+	if d.zone == detailZoneContent {
+		d.FocusActions()
+	} else {
+		d.FocusContent()
+	}
+}
+
+func (d *DetailPane) MoveAction(delta int) {
+	if len(d.actions) == 0 {
+		return
+	}
+	d.actionIdx = clampInt(d.actionIdx+delta, 0, len(d.actions)-1)
+}
+
+func (d *DetailPane) SelectedAction() (model.ItemAction, bool) {
+	if d.actionIdx < 0 || d.actionIdx >= len(d.actions) {
+		return model.ItemAction{}, false
+	}
+	return d.actions[d.actionIdx], true
+}
+
+func (d *DetailPane) Update(msg tea.Msg) tea.Cmd {
+	if !d.focused {
+		return nil
+	}
+	if d.zone == detailZoneContent {
+		switch d.mode {
+		case detailForm:
+			return d.form.Update(msg)
+		case detailDocument:
+			if _, ok := msg.(tea.KeyMsg); ok {
+				switch msg.(tea.KeyMsg).String() {
+				case "pgdown", "pgdn", "f", "ctrl+d":
+					d.docVP.ViewDown()
+				case "pgup", "b", "ctrl+u":
+					d.docVP.ViewUp()
+				}
+			}
+			var cmd tea.Cmd
+			d.docVP, cmd = d.docVP.Update(msg)
+			return cmd
+		}
+	}
+	return nil
+}
+
+func (d DetailPane) View() string {
+	if d.mode == detailEmpty {
+		return d.styles.empty.Render("Select a row to preview or edit.")
+	}
+	contentH, actionH := d.splitHeights()
+	var top string
+	switch d.mode {
+	case detailForm:
+		top = lipgloss.NewStyle().Width(d.width).Height(contentH).Render(d.form.View())
+	case detailDocument:
+		top = d.docVP.View()
+	default:
+		top = ""
+	}
+	sep := d.styles.sep.Width(d.width).Render(strings.Repeat("─", max(1, d.width)))
+	bottom := lipgloss.NewStyle().Width(d.width).Height(actionH).Render(d.renderActions())
+	return lipgloss.JoinVertical(lipgloss.Left, top, sep, bottom)
+}
+
+func (d DetailPane) renderActions() string {
+	if len(d.actions) == 0 {
+		hint := "No actions"
+		if d.focused && d.zone == detailZoneActions {
+			hint = lipgloss.NewStyle().Background(lipgloss.Color("238")).Render(" No actions ")
+		}
+		return d.styles.empty.Render(hint)
+	}
+	parts := make([]string, 0, len(d.actions))
+	for i, act := range d.actions {
+		style := d.styles.action
+		if d.focused && d.zone == detailZoneActions && i == d.actionIdx {
+			if act.Danger {
+				style = d.styles.actionDn
+			} else {
+				style = d.styles.actionOn
+			}
+		} else if act.Danger {
+			style = d.styles.actionDn
+		}
+		parts = append(parts, style.Render(act.Label))
+	}
+	line := strings.Join(parts, "")
+	if d.focused && d.zone == detailZoneActions {
+		line += d.styles.empty.Render("  ←/→ select · Enter run")
+	}
+	return line
+}
+
+func max(a, b int) int {
+	if a > b {
+		return a
+	}
+	return b
+}
+
+func (d DetailPane) BlinkCmd() tea.Cmd {
+	return entityFormBlinkCmd()
+}
+
+// NewDetailPaneForTest exposes detail pane for tests.
+func NewDetailPaneForTest() DetailPane {
+	return newDetailPane()
+}

cmd/office/ui/detail_test.go

@@ -0,0 +1,49 @@
+package ui_test
+
+import (
+	"strings"
+	"testing"
+
+	"github.com/eslider/go-onlyoffice/cmd/office/model"
+	"github.com/eslider/go-onlyoffice/cmd/office/ui"
+)
+
+func TestEntityFormLoadAndView(t *testing.T) {
+	form := ui.NewEntityFormForTest()
+	form.SetSize(40, 16)
+	form.Load(model.KindTask, "42", model.FormFields{
+		PrimaryLabel: "Title", SecondaryLabel: "Description",
+		Primary: "Fix bug", Secondary: "Details here",
+	})
+	view := form.View()
+	if !strings.Contains(view, "Fix bug") {
+		t.Fatal("view missing title")
+	}
+}
+
+func TestDetailPaneFormAndActions(t *testing.T) {
+	d := ui.NewDetailPaneForTest()
+	d.SetSize(50, 20)
+	d.SetFocused(true)
+	d.LoadForm(model.Item{ID: "1", Kind: model.KindTask, Title: "T"}, model.FormFields{
+		PrimaryLabel: "Title", SecondaryLabel: "Description",
+		Primary: "Hello", Secondary: "World",
+	})
+	view := d.View()
+	if !strings.Contains(view, "Save") {
+		t.Fatal("expected Save action button")
+	}
+	if !strings.Contains(view, "Hello") {
+		t.Fatal("expected form content")
+	}
+}
+
+func TestDetailPaneDocumentMode(t *testing.T) {
+	d := ui.NewDetailPaneForTest()
+	d.SetSize(50, 20)
+	d.LoadDocument(model.Item{ID: "9", Kind: model.KindFile, Title: "a.txt"}, "# Doc\n\nbody", 40)
+	view := d.View()
+	if !strings.Contains(view, "Download") {
+		t.Fatal("expected Download action")
+	}
+}

cmd/office/ui/entityform.go

@@ -0,0 +1,223 @@
+package ui
+
+import (
+	"strings"
+
+	"github.com/charmbracelet/bubbles/textinput"
+	"github.com/charmbracelet/bubbles/textarea"
+	tea "github.com/charmbracelet/bubbletea"
+	"github.com/charmbracelet/lipgloss"
+	"github.com/eslider/go-onlyoffice/cmd/office/model"
+)
+
+type entityField int
+
+const (
+	entityFieldPrimary entityField = iota
+	entityFieldSecondary
+)
+
+// EntityForm is the top section of the detail pane for editable entities.
+type EntityForm struct {
+	active         bool
+	kind           model.Kind
+	itemID         string
+	primaryLabel   string
+	secondaryLabel string
+	readOnly       bool
+	primary        textinput.Model
+	secondary      textarea.Model
+	field          entityField
+	focused        bool
+	dirty          bool
+	width          int
+	height         int
+	styles         entityFormStyles
+}
+
+type entityFormStyles struct {
+	header   lipgloss.Style
+	label    lipgloss.Style
+	labelAct lipgloss.Style
+}
+
+func newEntityFormStyles() entityFormStyles {
+	return entityFormStyles{
+		header:   lipgloss.NewStyle().Bold(true).Foreground(lipgloss.Color("252")),
+		label:    lipgloss.NewStyle().Foreground(lipgloss.Color("241")),
+		labelAct: lipgloss.NewStyle().Bold(true).Foreground(lipgloss.Color("255")).Background(lipgloss.Color("62")),
+	}
+}
+
+func newEntityForm() EntityForm {
+	primary := textinput.New()
+	primary.CharLimit = 512
+	primary.Prompt = "> "
+	secondary := textarea.New()
+	secondary.ShowLineNumbers = false
+	secondary.CharLimit = 8000
+	secondary.Prompt = "> "
+	return EntityForm{
+		primary:  primary,
+		secondary: secondary,
+		field:    entityFieldPrimary,
+		styles:   newEntityFormStyles(),
+	}
+}
+
+func (f *EntityForm) Active() bool { return f.active }
+
+func (f *EntityForm) ItemID() string { return f.itemID }
+
+func (f *EntityForm) Primary() string { return f.primary.Value() }
+
+func (f *EntityForm) Secondary() string { return f.secondary.Value() }
+
+func (f *EntityForm) MarkClean() { f.dirty = false }
+
+func (f *EntityForm) Load(kind model.Kind, itemID string, fields model.FormFields) {
+	f.active = true
+	f.kind = kind
+	f.itemID = itemID
+	f.primaryLabel = fields.PrimaryLabel
+	f.secondaryLabel = fields.SecondaryLabel
+	f.readOnly = fields.ReadOnly
+	f.primary.SetValue(fields.Primary)
+	f.secondary.SetValue(fields.Secondary)
+	f.dirty = false
+	f.field = entityFieldPrimary
+	f.applyFocus()
+	f.layoutFields()
+}
+
+func (f *EntityForm) Clear() {
+	f.active = false
+	f.itemID = ""
+	f.primary.SetValue("")
+	f.secondary.SetValue("")
+	f.dirty = false
+	f.primary.Blur()
+	f.secondary.Blur()
+}
+
+func (f *EntityForm) SetFocused(on bool) {
+	f.focused = on && f.active
+	if f.focused {
+		f.applyFocus()
+	} else {
+		f.primary.Blur()
+		f.secondary.Blur()
+	}
+}
+
+func (f *EntityForm) SetSize(w, h int) {
+	if w < 12 {
+		w = 12
+	}
+	if h < 6 {
+		h = 6
+	}
+	f.width = w
+	f.height = h
+	f.layoutFields()
+}
+
+func (f *EntityForm) layoutFields() {
+	if f.width == 0 {
+		return
+	}
+	inner := f.width - 2
+	if inner < 8 {
+		inner = 8
+	}
+	f.primary.Width = inner
+	secH := f.height - 6
+	if secH < 3 {
+		secH = 3
+	}
+	f.secondary.SetWidth(inner)
+	f.secondary.SetHeight(secH)
+}
+
+func (f *EntityForm) FocusNext() {
+	if f.field < entityFieldSecondary {
+		f.field++
+	}
+	f.applyFocus()
+}
+
+func (f *EntityForm) FocusPrev() {
+	if f.field > entityFieldPrimary {
+		f.field--
+	}
+	f.applyFocus()
+}
+
+func (f *EntityForm) applyFocus() {
+	if f.readOnly {
+		f.primary.Blur()
+		f.secondary.Blur()
+		return
+	}
+	switch f.field {
+	case entityFieldPrimary:
+		f.primary.Focus()
+		f.secondary.Blur()
+	default:
+		f.primary.Blur()
+		f.secondary.Focus()
+	}
+}
+
+func (f *EntityForm) Update(msg tea.Msg) tea.Cmd {
+	if !f.active || !f.focused || f.readOnly {
+		return nil
+	}
+	var cmd tea.Cmd
+	switch f.field {
+	case entityFieldPrimary:
+		f.primary, cmd = f.primary.Update(msg)
+	default:
+		f.secondary, cmd = f.secondary.Update(msg)
+	}
+	if _, ok := msg.(tea.KeyMsg); ok {
+		f.dirty = true
+	}
+	return cmd
+}
+
+func (f EntityForm) View() string {
+	if !f.active {
+		return ""
+	}
+	header := f.styles.header.Render(model.KindHeading(f.kind, f.itemID))
+	pLabel := f.styles.label.Render(f.primaryLabel)
+	if f.focused && f.field == entityFieldPrimary && !f.readOnly {
+		pLabel = f.styles.labelAct.Render(f.primaryLabel)
+	}
+	sLabel := f.styles.label.Render(f.secondaryLabel)
+	if f.focused && f.field == entityFieldSecondary && !f.readOnly {
+		sLabel = f.styles.labelAct.Render(f.secondaryLabel)
+	}
+	ro := ""
+	if f.readOnly {
+		ro = lipgloss.NewStyle().Foreground(lipgloss.Color("241")).Render(" (read-only)") + "\n"
+	}
+	return strings.Join([]string{
+		header + ro,
+		pLabel,
+		f.primary.View(),
+		"",
+		sLabel,
+		f.secondary.View(),
+	}, "\n")
+}
+
+func entityFormBlinkCmd() tea.Cmd {
+	return tea.Batch(textinput.Blink, textarea.Blink)
+}
+
+// NewEntityFormForTest exposes a form for unit tests.
+func NewEntityFormForTest() EntityForm {
+	return newEntityForm()
+}

cmd/office/ui/keys.go

@@ -0,0 +1,85 @@
+package ui
+
+import "github.com/eslider/go-onlyoffice/cmd/office/model"
+
+// Action is a keyboard command outcome for the TUI.
+type Action int
+
+const (
+	ActionNone Action = iota
+	ActionMoveUp
+	ActionMoveDown
+	ActionMoveLeft
+	ActionMoveRight
+	ActionSort
+	ActionToggleSelect
+	ActionFocusDetail
+	ActionToggleMenuPane
+	ActionToggleListPane
+	ActionToggleDetailPane
+	ActionNextPane
+	ActionPrevPane
+	ActionRefresh
+	ActionQuit
+)
+
+// KeyAction maps a key string and focused pane to an action.
+func KeyAction(key string, pane model.FocusPane) Action {
+	switch key {
+	case "q", "ctrl+c":
+		return ActionQuit
+	case "tab":
+		if pane != model.FocusPreview {
+			return ActionNextPane
+		}
+	case "shift+tab", "backtab":
+		if pane != model.FocusPreview {
+			return ActionPrevPane
+		}
+	case "r":
+		return ActionRefresh
+	case "up", "k":
+		return ActionMoveUp
+	case "down", "j":
+		return ActionMoveDown
+	case "s":
+		if pane == model.FocusList {
+			return ActionSort
+		}
+	case "left", "h":
+		return ActionMoveLeft
+	case "right", "l":
+		return ActionMoveRight
+	case " ":
+		if pane == model.FocusList {
+			return ActionToggleSelect
+		}
+	case "v", "p":
+		if pane == model.FocusList {
+			return ActionFocusDetail
+		}
+	case "alt+1":
+		return ActionToggleMenuPane
+	case "alt+2":
+		return ActionToggleListPane
+	case "alt+3":
+		return ActionToggleDetailPane
+	}
+	return ActionNone
+}
+
+// LayoutWidthsLegacy is kept for tests that expect the old signature.
+func LayoutWidthsLegacy(total int) (menu, list, preview int) {
+	pw := LayoutWidths(total, defaultPaneVisibility())
+	return pw.Menu, pw.List, pw.Detail
+}
+
+// ResolveMoveUp returns the action for upward navigation keys.
+func ResolveMoveUp(pane model.FocusPane) Action {
+	switch pane {
+	case model.FocusMenu, model.FocusList, model.FocusPreview:
+		return ActionMoveUp
+	default:
+		return ActionNone
+	}
+}

cmd/office/ui/layout.go

@@ -0,0 +1,129 @@
+package ui
+
+import "github.com/eslider/go-onlyoffice/cmd/office/model"
+
+// PaneVisibility controls which columns are shown.
+type PaneVisibility struct {
+	Menu, List, Detail bool
+}
+
+// PaneWidths is outer lipgloss width per column (sums to terminal width).
+type PaneWidths struct {
+	Menu, List, Detail int
+	Visibility         PaneVisibility
+}
+
+func defaultPaneVisibility() PaneVisibility {
+	return PaneVisibility{Menu: true, List: true, Detail: true}
+}
+
+// LayoutWidths splits total terminal width evenly across visible panes.
+func LayoutWidths(total int, vis PaneVisibility) PaneWidths {
+	if total < 1 {
+		total = 80
+	}
+	v := vis
+	n := countVisible(v)
+	if n == 0 {
+		v = defaultPaneVisibility()
+		n = 3
+	}
+	base := total / n
+	rem := total % n
+	out := PaneWidths{Visibility: v}
+	if v.Menu {
+		out.Menu = base
+		if rem > 0 {
+			out.Menu++
+			rem--
+		}
+	}
+	if v.List {
+		out.List = base
+		if rem > 0 {
+			out.List++
+			rem--
+		}
+	}
+	if v.Detail {
+		out.Detail = base
+		if rem > 0 {
+			out.Detail++
+			rem--
+		}
+	}
+	return out
+}
+
+func countVisible(v PaneVisibility) int {
+	n := 0
+	if v.Menu {
+		n++
+	}
+	if v.List {
+		n++
+	}
+	if v.Detail {
+		n++
+	}
+	return n
+}
+
+// NextVisibleFocus cycles focus forward, skipping hidden panes.
+func NextVisibleFocus(cur model.FocusPane, vis PaneVisibility) model.FocusPane {
+	order := []model.FocusPane{model.FocusMenu, model.FocusList, model.FocusPreview}
+	start := 0
+	for i, p := range order {
+		if p == cur {
+			start = i
+			break
+		}
+	}
+	for step := 1; step <= len(order); step++ {
+		p := order[(start+step)%len(order)]
+		if paneVisible(p, vis) {
+			return p
+		}
+	}
+	return cur
+}
+
+// PrevVisibleFocus cycles focus backward, skipping hidden panes.
+func PrevVisibleFocus(cur model.FocusPane, vis PaneVisibility) model.FocusPane {
+	order := []model.FocusPane{model.FocusMenu, model.FocusList, model.FocusPreview}
+	start := 0
+	for i, p := range order {
+		if p == cur {
+			start = i
+			break
+		}
+	}
+	for step := 1; step <= len(order); step++ {
+		p := order[(start-step+len(order))%len(order)]
+		if paneVisible(p, vis) {
+			return p
+		}
+	}
+	return cur
+}
+
+func paneVisible(p model.FocusPane, vis PaneVisibility) bool {
+	switch p {
+	case model.FocusMenu:
+		return vis.Menu
+	case model.FocusList:
+		return vis.List
+	default:
+		return vis.Detail
+	}
+}
+
+func firstVisibleFocus(vis PaneVisibility) model.FocusPane {
+	if vis.Menu {
+		return model.FocusMenu
+	}
+	if vis.List {
+		return model.FocusList
+	}
+	return model.FocusPreview
+}

cmd/office/ui/layout_test.go

@@ -0,0 +1,69 @@
+package ui
+
+import (
+	"testing"
+
+	"github.com/eslider/go-onlyoffice/cmd/office/model"
+)
+
+func TestLayoutWidthsAllVisibleUsesFullWidth(t *testing.T) {
+	vis := PaneVisibility{Menu: true, List: true, Detail: true}
+	pw := LayoutWidths(120, vis)
+	sum := pw.Menu + pw.List + pw.Detail
+	if sum != 120 {
+		t.Fatalf("sum=%d want 120", sum)
+	}
+}
+
+func TestLayoutWidthsSinglePane(t *testing.T) {
+	pw := LayoutWidths(100, PaneVisibility{Menu: false, List: true, Detail: false})
+	if pw.List != 100 {
+		t.Fatalf("list=%d want 100", pw.List)
+	}
+	if pw.Menu != 0 || pw.Detail != 0 {
+		t.Fatalf("unexpected widths: %+v", pw)
+	}
+}
+
+func TestLayoutWidthsTwoPanes(t *testing.T) {
+	pw := LayoutWidths(80, PaneVisibility{Menu: true, List: false, Detail: true})
+	if pw.Menu+pw.Detail != 80 {
+		t.Fatalf("sum=%d want 80", pw.Menu+pw.Detail)
+	}
+}
+
+func TestNextVisibleFocusSkipsHidden(t *testing.T) {
+	vis := PaneVisibility{Menu: false, List: true, Detail: true}
+	if got := NextVisibleFocus(model.FocusList, vis); got != model.FocusPreview {
+		t.Fatalf("got %v", got)
+	}
+	if got := NextVisibleFocus(model.FocusPreview, vis); got != model.FocusList {
+		t.Fatalf("got %v", got)
+	}
+}
+
+func TestPrevVisibleFocusSkipsHidden(t *testing.T) {
+	vis := PaneVisibility{Menu: true, List: false, Detail: true}
+	if got := PrevVisibleFocus(model.FocusPreview, vis); got != model.FocusMenu {
+		t.Fatalf("got %v", got)
+	}
+}
+
+func TestLayoutWidthsLegacyHelper(t *testing.T) {
+	menu, list, preview := LayoutWidthsLegacy(120)
+	if menu+list+preview != 120 {
+		t.Fatalf("widths exceed total")
+	}
+}
+
+func TestKeyActionTogglePanes(t *testing.T) {
+	if got := KeyAction("alt+1", model.FocusList); got != ActionToggleMenuPane {
+		t.Fatalf("got %v", got)
+	}
+	if got := KeyAction("alt+2", model.FocusMenu); got != ActionToggleListPane {
+		t.Fatalf("got %v", got)
+	}
+	if got := KeyAction("alt+3", model.FocusList); got != ActionToggleDetailPane {
+		t.Fatalf("got %v", got)
+	}
+}

cmd/office/ui/scroll.go

@@ -0,0 +1,67 @@
+package ui
+
+import (
+	"github.com/charmbracelet/bubbles/viewport"
+	"github.com/eslider/go-onlyoffice/cmd/office/model"
+)
+
+func (m *Model) scrollFocusedPane(key string) bool {
+	switch m.focus {
+	case model.FocusMenu:
+		return scrollViewport(&m.menuVP, key)
+	case model.FocusList:
+		switch key {
+		case "pgdown", "pgdn", "f", "ctrl+d":
+			m.listTable.PageScroll(1)
+			return true
+		case "pgup", "b", "ctrl+u":
+			m.listTable.PageScroll(-1)
+			return true
+		}
+		return false
+	case model.FocusPreview:
+		if m.detail.Zone() != detailZoneContent || m.detail.mode != detailDocument {
+			return false
+		}
+		return scrollViewport(&m.detail.docVP, key)
+	default:
+		return false
+	}
+}
+
+func (m *Model) paneHeight() int {
+	h := m.height - 3
+	if h < 3 {
+		h = 3
+	}
+	return h
+}
+
+func (m *Model) paneInnerWidth(outer int) int {
+	if outer <= 0 {
+		return 8
+	}
+	w := outer - 2 // border only; content fills inner box
+	if w < 8 {
+		w = 8
+	}
+	return w
+}
+
+func scrollViewport(vp *viewport.Model, key string) bool {
+	switch key {
+	case "pgdown", "pgdn", "f", "ctrl+d":
+		vp.ViewDown()
+		return true
+	case "pgup", "b", "ctrl+u":
+		vp.ViewUp()
+		return true
+	case "home", "g":
+		vp.GotoTop()
+		return true
+	case "end", "G":
+		vp.GotoBottom()
+		return true
+	}
+	return false
+}

cmd/office/ui/table.go

@@ -0,0 +1,485 @@
+package ui
+
+import (
+	"fmt"
+	"sort"
+	"strings"
+
+	"github.com/charmbracelet/bubbles/viewport"
+	tea "github.com/charmbracelet/bubbletea"
+	"github.com/charmbracelet/lipgloss"
+	"github.com/eslider/go-onlyoffice/cmd/office/model"
+	"github.com/mattn/go-runewidth"
+)
+
+type tableStyles struct {
+	title      lipgloss.Style
+	header     lipgloss.Style
+	headerSort lipgloss.Style
+	cell       lipgloss.Style
+	rowActive  lipgloss.Style
+	colActive  lipgloss.Style
+	cellActive lipgloss.Style
+	rowSelect  lipgloss.Style
+	cellSelect lipgloss.Style
+	help       lipgloss.Style
+}
+
+func defaultTableStyles() tableStyles {
+	return tableStyles{
+		title:      lipgloss.NewStyle().Bold(true).Foreground(lipgloss.Color("252")),
+		header:     lipgloss.NewStyle().Bold(true).Foreground(lipgloss.Color("255")).Background(lipgloss.Color("236")).Padding(0, 1),
+		headerSort: lipgloss.NewStyle().Bold(true).Foreground(lipgloss.Color("229")).Background(lipgloss.Color("62")).Padding(0, 1),
+		cell:       lipgloss.NewStyle().Foreground(lipgloss.Color("252")).Padding(0, 1),
+		rowActive:  lipgloss.NewStyle().Foreground(lipgloss.Color("255")).Background(lipgloss.Color("238")),
+		colActive:  lipgloss.NewStyle().Foreground(lipgloss.Color("255")).Background(lipgloss.Color("237")),
+		cellActive: lipgloss.NewStyle().Bold(true).Foreground(lipgloss.Color("255")).Background(lipgloss.Color("62")),
+		rowSelect:  lipgloss.NewStyle().Foreground(lipgloss.Color("255")).Background(lipgloss.Color("22")),
+		cellSelect: lipgloss.NewStyle().Bold(true).Foreground(lipgloss.Color("255")).Background(lipgloss.Color("34")),
+		help:       lipgloss.NewStyle().Foreground(lipgloss.Color("241")),
+	}
+}
+
+// DataTable is a spreadsheet-style listContent table for the list pane.
+type DataTable struct {
+	spec      model.ListSpec
+	columns   []model.TableColumn
+	items     []model.Item
+	order     []int
+	cursorRow int
+	cursorCol int
+	colScroll int
+	sortCol   int
+	sortAsc   bool
+	focused   bool
+	ready     bool
+	width     int
+	height    int
+	viewport  viewport.Model
+	styles    tableStyles
+}
+
+func newDataTable() DataTable {
+	t := DataTable{
+		sortCol:  -1,
+		styles:   defaultTableStyles(),
+		viewport: viewport.New(40, 10),
+	}
+	t.viewport.MouseWheelEnabled = true
+	return t
+}
+
+func (t *DataTable) SetSize(w, h int) {
+	if w < 8 {
+		w = 8
+	}
+	if h < 3 {
+		h = 3
+	}
+	t.width = w
+	t.height = h
+	t.viewport.Width = w
+	t.viewport.Height = h - 2 // title + header
+	if t.viewport.Height < 1 {
+		t.viewport.Height = 1
+	}
+	t.refreshViewport()
+}
+
+func (t *DataTable) SetFocused(f bool) {
+	t.focused = f
+	t.refreshViewport()
+}
+
+func (t *DataTable) SetData(spec model.ListSpec, items []model.Item) {
+	t.spec = spec
+	t.items = items
+	t.columns = model.BuildColumns(spec.Subject, items)
+	t.order = make([]int, len(items))
+	for i := range t.order {
+		t.order[i] = i
+	}
+	t.cursorRow = 0
+	t.cursorCol = 0
+	t.colScroll = 0
+	t.ready = true
+	if t.sortCol >= 0 {
+		t.applySort()
+	}
+	t.clampCursor()
+	t.refreshViewport()
+}
+
+func (t *DataTable) Clear() {
+	t.ready = false
+	t.items = nil
+	t.order = nil
+	t.columns = nil
+	t.cursorRow = 0
+	t.cursorCol = 0
+	t.viewport.SetContent("")
+}
+
+func (t *DataTable) ItemIndex() int {
+	if t.cursorRow < 0 || t.cursorRow >= len(t.order) {
+		return -1
+	}
+	return t.order[t.cursorRow]
+}
+
+func (t *DataTable) MoveRow(delta int) {
+	if !t.ready || len(t.order) == 0 {
+		return
+	}
+	prev := t.cursorRow
+	t.cursorRow = clampInt(t.cursorRow+delta, 0, len(t.order)-1)
+	t.syncRowScroll(prev)
+	t.refreshViewport()
+}
+
+func (t *DataTable) MoveCol(delta int) {
+	if !t.ready || len(t.columns) == 0 {
+		return
+	}
+	t.cursorCol = clampInt(t.cursorCol+delta, 0, len(t.columns)-1)
+	t.ensureColVisible()
+	t.refreshViewport()
+}
+
+func (t *DataTable) ToggleSort() {
+	if !t.ready || len(t.columns) == 0 || len(t.order) == 0 {
+		return
+	}
+	if t.sortCol == t.cursorCol {
+		t.sortAsc = !t.sortAsc
+	} else {
+		t.sortCol = t.cursorCol
+		t.sortAsc = true
+	}
+	t.applySort()
+	t.refreshViewport()
+}
+
+func (t *DataTable) applySort() {
+	if t.sortCol < 0 || t.sortCol >= len(t.columns) {
+		return
+	}
+	key := t.columns[t.sortCol].Key
+	sort.SliceStable(t.order, func(i, j int) bool {
+		a := model.CellText(t.items[t.order[i]], key)
+		b := model.CellText(t.items[t.order[j]], key)
+		if t.sortAsc {
+			return strings.ToLower(a) < strings.ToLower(b)
+		}
+		return strings.ToLower(a) > strings.ToLower(b)
+	})
+}
+
+func (t *DataTable) PageScroll(delta int) {
+	if delta > 0 {
+		t.viewport.ViewDown()
+	} else {
+		t.viewport.ViewUp()
+	}
+}
+
+func (t *DataTable) Update(msg tea.Msg) tea.Cmd {
+	if !t.focused || !t.ready {
+		return nil
+	}
+	switch msg := msg.(type) {
+	case tea.KeyMsg:
+		switch msg.String() {
+		case "pgdown", "pgdn", "f", "ctrl+d":
+			t.viewport.ViewDown()
+		case "pgup", "b", "ctrl+u":
+			t.viewport.ViewUp()
+		}
+	case tea.MouseMsg:
+		var cmd tea.Cmd
+		t.viewport, cmd = t.viewport.Update(msg)
+		return cmd
+	}
+	return nil
+}
+
+func (t DataTable) View() string {
+	if !t.ready {
+		return "List\n\nSelect a leaf node in the tree\n(marked with •) and press Enter.\n"
+	}
+	title := t.styles.title.Render(fmt.Sprintf("%s (%d)", t.spec.Subject, len(t.items)))
+	sortHint := ""
+	if t.sortCol >= 0 && t.sortCol < len(t.columns) {
+		dir := "▲"
+		if !t.sortAsc {
+			dir = "▼"
+		}
+		sortHint = t.styles.help.Render(fmt.Sprintf("  sort: %s %s", t.columns[t.sortCol].Title, dir))
+	}
+	header := t.renderHeader()
+	body := t.viewport.View()
+	content := lipgloss.JoinVertical(lipgloss.Left, title+sortHint, header, body)
+	return lipgloss.NewStyle().Width(t.width).Render(content)
+}
+
+func (t *DataTable) visibleLayout() (indices []int, widths map[int]int) {
+	widths = make(map[int]int)
+	if len(t.columns) == 0 || t.width <= 0 {
+		return nil, widths
+	}
+	indices = t.pickVisibleColumnIndices()
+	if len(indices) == 0 {
+		return indices, widths
+	}
+	minSum := 0
+	for _, i := range indices {
+		minSum += t.columns[i].Width
+	}
+	widths = distributeColumnWidths(minSum, t.width, indices, t.columns)
+	return indices, widths
+}
+
+func (t *DataTable) pickVisibleColumnIndices() []int {
+	var out []int
+	used := 0
+	for colIdx := t.colScroll; colIdx < len(t.columns); colIdx++ {
+		w := t.columns[colIdx].Width
+		if len(out) > 0 && used+w > t.width {
+			break
+		}
+		out = append(out, colIdx)
+		used += w
+	}
+	if len(out) == 0 {
+		colIdx := t.colScroll
+		if colIdx < 0 || colIdx >= len(t.columns) {
+			colIdx = 0
+		}
+		out = []int{colIdx}
+	}
+	return out
+}
+
+// distributeColumnWidths expands or shrinks visible columns to exactly fill total width.
+func distributeColumnWidths(minSum, total int, indices []int, cols []model.TableColumn) map[int]int {
+	out := make(map[int]int, len(indices))
+	if len(indices) == 0 {
+		return out
+	}
+	if total < len(indices) {
+		total = len(indices)
+	}
+	if minSum <= 0 {
+		each := total / len(indices)
+		if each < 1 {
+			each = 1
+		}
+		for _, i := range indices {
+			out[i] = each
+		}
+		fixColumnWidthSum(out, indices, total)
+		return out
+	}
+	for _, i := range indices {
+		out[i] = cols[i].Width
+	}
+	if minSum >= total {
+		for _, i := range indices {
+			out[i] = cols[i].Width * total / minSum
+			if out[i] < 1 {
+				out[i] = 1
+			}
+		}
+		fixColumnWidthSum(out, indices, total)
+		return out
+	}
+	extra := total - minSum
+	flex := make([]int, 0, len(indices))
+	for _, i := range indices {
+		switch cols[i].Key {
+		case "title", "subtitle", "description", "displayName", "primaryEmail", "from", "to", "tasks":
+			flex = append(flex, i)
+		}
+	}
+	if len(flex) == 0 {
+		flex = append(flex, indices...)
+	}
+	flexSum := 0
+	for _, i := range flex {
+		flexSum += cols[i].Width
+	}
+	if flexSum <= 0 {
+		flexSum = len(flex)
+	}
+	for _, i := range flex {
+		out[i] += extra * cols[i].Width / flexSum
+	}
+	fixColumnWidthSum(out, indices, total)
+	return out
+}
+
+func fixColumnWidthSum(widths map[int]int, indices []int, total int) {
+	if len(indices) == 0 {
+		return
+	}
+	sum := 0
+	for _, i := range indices {
+		sum += widths[i]
+	}
+	widths[indices[len(indices)-1]] += total - sum
+	if widths[indices[len(indices)-1]] < 1 {
+		widths[indices[len(indices)-1]] = 1
+	}
+}
+
+func (t *DataTable) renderHeader() string {
+	indices, widths := t.visibleLayout()
+	cells := make([]string, 0, len(indices))
+	for _, colIdx := range indices {
+		col := t.columns[colIdx]
+		w := widths[colIdx]
+		title := col.Title
+		if t.sortCol == colIdx {
+			if t.sortAsc {
+				title += " ▲"
+			} else {
+				title += " ▼"
+			}
+		}
+		text := runewidth.Truncate(title, w, "…")
+		style := t.styles.header
+		if t.focused && colIdx == t.cursorCol {
+			style = t.styles.headerSort
+		}
+		cells = append(cells, style.Width(w).MaxWidth(w).Render(text))
+	}
+	return lipgloss.JoinHorizontal(lipgloss.Left, cells...)
+}
+
+func (t *DataTable) refreshViewport() {
+	if !t.ready {
+		return
+	}
+	rows := make([]string, 0, len(t.order))
+	for row := 0; row < len(t.order); row++ {
+		rows = append(rows, t.renderRow(row))
+	}
+	t.viewport.SetContent(strings.Join(rows, "\n"))
+	t.syncRowScroll(t.cursorRow)
+}
+
+func (t *DataTable) renderRow(row int) string {
+	item := t.items[t.order[row]]
+	selected := item.Selected
+	indices, widths := t.visibleLayout()
+	cells := make([]string, 0, len(indices))
+	for _, colIdx := range indices {
+		col := t.columns[colIdx]
+		w := widths[colIdx]
+		text := runewidth.Truncate(model.CellText(item, col.Key), w, "…")
+		cells = append(cells, t.styleCell(row, colIdx, selected, text, w))
+	}
+	return lipgloss.JoinHorizontal(lipgloss.Left, cells...)
+}
+
+func (t *DataTable) styleCell(row, col int, selected bool, text string, width int) string {
+	base := t.styles.cell.Width(width).MaxWidth(width)
+	isRow := row == t.cursorRow
+	isCol := col == t.cursorCol
+	isCell := t.focused && isRow && isCol
+
+	switch {
+	case selected && isCell:
+		return t.styles.cellSelect.Width(width).MaxWidth(width).Render(text)
+	case selected && isRow:
+		return t.styles.rowSelect.Width(width).MaxWidth(width).Render(text)
+	case selected:
+		return t.styles.rowSelect.Width(width).MaxWidth(width).Render(text)
+	case isCell:
+		return t.styles.cellActive.Width(width).MaxWidth(width).Render(text)
+	case t.focused && isRow:
+		return t.styles.rowActive.Width(width).MaxWidth(width).Render(text)
+	case t.focused && isCol:
+		return t.styles.colActive.Width(width).MaxWidth(width).Render(text)
+	default:
+		return base.Render(text)
+	}
+}
+
+func (t *DataTable) ensureColVisible() {
+	vis := t.pickVisibleColumnIndices()
+	if len(vis) == 0 {
+		return
+	}
+	first, last := vis[0], vis[len(vis)-1]
+	if t.cursorCol < first {
+		t.colScroll = t.cursorCol
+	}
+	if t.cursorCol > last {
+		t.colScroll = t.cursorCol
+		for t.cursorCol >= 0 {
+			vis = t.pickVisibleColumnIndices()
+			if len(vis) == 0 {
+				break
+			}
+			last = vis[len(vis)-1]
+			if t.cursorCol <= last {
+				break
+			}
+			if t.colScroll < len(t.columns)-1 {
+				t.colScroll++
+			} else {
+				break
+			}
+		}
+	}
+}
+
+func (t *DataTable) syncRowScroll(prev int) {
+	if t.cursorRow < t.viewport.YOffset {
+		t.viewport.YOffset = t.cursorRow
+	} else if t.cursorRow >= t.viewport.YOffset+t.viewport.Height {
+		t.viewport.YOffset = t.cursorRow - t.viewport.Height + 1
+	}
+	if t.viewport.YOffset < 0 {
+		t.viewport.YOffset = 0
+	}
+	maxOff := len(t.order) - t.viewport.Height
+	if maxOff < 0 {
+		maxOff = 0
+	}
+	if t.viewport.YOffset > maxOff {
+		t.viewport.YOffset = maxOff
+	}
+	_ = prev
+}
+
+func (t *DataTable) clampCursor() {
+	if len(t.order) == 0 {
+		t.cursorRow = 0
+	} else {
+		t.cursorRow = clampInt(t.cursorRow, 0, len(t.order)-1)
+	}
+	if len(t.columns) == 0 {
+		t.cursorCol = 0
+	} else {
+		t.cursorCol = clampInt(t.cursorCol, 0, len(t.columns)-1)
+	}
+}
+
+func clampInt(v, lo, hi int) int {
+	if v < lo {
+		return lo
+	}
+	if v > hi {
+		return hi
+	}
+	return v
+}
+
+// tableKeyMatches helps avoid importing key in app.go for sort-only bindings.
+func (t *DataTable) UpdateItems(items []model.Item) {
+	t.items = items
+	t.clampCursor()
+	t.refreshViewport()
+}

cmd/office/ui/table_test.go

@@ -0,0 +1,98 @@
+package ui
+
+import (
+	"strings"
+	"testing"
+
+	"github.com/eslider/go-onlyoffice/cmd/office/model"
+)
+
+func sampleItems() []model.Item {
+	return []model.Item{
+		{ID: "2", Title: "Bravo", Subtitle: "b", Kind: model.KindTask, Raw: map[string]any{"status": "Open"}},
+		{ID: "1", Title: "Alpha", Subtitle: "a", Kind: model.KindTask, Raw: map[string]any{"status": "Done"}},
+	}
+}
+
+func TestDataTableSortByTitle(t *testing.T) {
+	tbl := newDataTable()
+	tbl.SetSize(80, 12)
+	tbl.SetData(model.ListSpec{Subject: model.SubjectTasks}, sampleItems())
+	tbl.cursorCol = indexOfColumn(tbl, "title")
+	tbl.ToggleSort()
+	if model.CellText(tbl.items[tbl.order[0]], "title") != "Alpha" {
+		t.Fatalf("expected Alpha first after sort, order=%v", tbl.order)
+	}
+}
+
+func TestDataTableMoveColScrolls(t *testing.T) {
+	tbl := newDataTable()
+	tbl.SetSize(24, 10)
+	items := make([]model.Item, 1)
+	items[0] = model.Item{ID: "1", Title: "One", Raw: map[string]any{
+		"alpha": "a", "beta": "b", "gamma": "c", "delta": "d",
+	}}
+	tbl.SetData(model.ListSpec{Subject: model.SubjectTasks}, items)
+	last := len(tbl.columns) - 1
+	tbl.cursorCol = last
+	tbl.ensureColVisible()
+	if tbl.colScroll == 0 && last > 2 {
+		t.Fatalf("expected horizontal scroll for wide table, colScroll=%d", tbl.colScroll)
+	}
+}
+
+func TestDataTableViewHighlightsActiveCell(t *testing.T) {
+	tbl := newDataTable()
+	tbl.SetSize(80, 12)
+	tbl.SetFocused(true)
+	tbl.SetData(model.ListSpec{Subject: model.SubjectTasks}, sampleItems())
+	tbl.cursorRow = 1
+	tbl.cursorCol = 2
+	view := tbl.View()
+	if !strings.Contains(view, "Alpha") {
+		t.Fatal("view missing row data")
+	}
+	if !strings.Contains(view, "Title") {
+		t.Fatal("view missing header")
+	}
+}
+
+func TestDataTableFillsPaneWidth(t *testing.T) {
+	tbl := newDataTable()
+	tbl.SetSize(80, 12)
+	tbl.SetData(model.ListSpec{Subject: model.SubjectTasks}, sampleItems())
+	indices, widths := tbl.visibleLayout()
+	sum := 0
+	for _, i := range indices {
+		sum += widths[i]
+	}
+	if sum != 80 {
+		t.Fatalf("visible columns width sum=%d want 80", sum)
+	}
+}
+
+func TestDistributeColumnWidthsFillsTotal(t *testing.T) {
+	cols := []model.TableColumn{
+		{Key: "_sel", Width: 3},
+		{Key: "id", Width: 10},
+		{Key: "title", Width: 20},
+	}
+	indices := []int{0, 1, 2}
+	w := distributeColumnWidths(33, 80, indices, cols)
+	sum := w[0] + w[1] + w[2]
+	if sum != 80 {
+		t.Fatalf("sum=%d want 80", sum)
+	}
+	if w[2] <= 20 {
+		t.Fatalf("title should expand, got %d", w[2])
+	}
+}
+
+func indexOfColumn(tbl DataTable, key string) int {
+	for i, c := range tbl.columns {
+		if c.Key == key {
+			return i
+		}
+	}
+	return 0
+}

cmd/oo/calendar.go

@@ -0,0 +1,116 @@
+package main
+
+import (
+	"time"
+
+	"github.com/spf13/cobra"
+)
+
+var calendarCmd = &cobra.Command{
+	Use:     "calendar",
+	Aliases: []string{"cal"},
+	Short:   "Calendars and events",
+}
+
+func init() {
+	rootCmd.AddCommand(calendarCmd)
+	calendarCmd.AddCommand(calListCmd())
+	calendarCmd.AddCommand(calEventsCmd())
+	calendarCmd.AddCommand(calAddCmd())
+	calendarCmd.AddCommand(calDeleteCmd())
+}
+
+func calListCmd() *cobra.Command {
+	return &cobra.Command{
+		Use:   "list",
+		Short: "List calendars",
+		RunE: func(cmd *cobra.Command, args []string) error {
+			c, err := newOO(cmd)
+			if err != nil {
+				return err
+			}
+			out, err := c.ListCalendars(cmd.Context(), "", "")
+			if err != nil {
+				return err
+			}
+			printTable([]string{"objectId", "title", "textColor", "backgroundColor", "isEditable"}, out)
+			return nil
+		},
+	}
+}
+
+func calEventsCmd() *cobra.Command {
+	var start, end string
+	cmd := &cobra.Command{
+		Use:   "events",
+		Short: "List calendar events for a date range (default: next 7 days)",
+		RunE: func(cmd *cobra.Command, args []string) error {
+			c, err := newOO(cmd)
+			if err != nil {
+				return err
+			}
+			if start == "" || end == "" {
+				start = time.Now().Format("2006-01-02")
+				end = time.Now().AddDate(0, 0, 7).Format("2006-01-02")
+			}
+			out, err := c.ListEvents(cmd.Context(), start, end)
+			if err != nil {
+				return err
+			}
+			printTable([]string{"objectId", "title", "start", "end", "allDayLong"}, out)
+			return nil
+		},
+	}
+	cmd.Flags().StringVar(&start, "start", "", "start date YYYY-MM-DD")
+	cmd.Flags().StringVar(&end, "end", "", "end date YYYY-MM-DD")
+	return cmd
+}
+
+func calAddCmd() *cobra.Command {
+	var cal, desc string
+	var allDay bool
+	cmd := &cobra.Command{
+		Use:   "add TITLE START END",
+		Short: "Add a calendar event",
+		Args:  cobra.ExactArgs(3),
+		RunE: func(cmd *cobra.Command, args []string) error {
+			c, err := newOO(cmd)
+			if err != nil {
+				return err
+			}
+			ev, err := c.AddEvent(cmd.Context(), cal, args[0], args[1], args[2], desc, allDay)
+			if err != nil {
+				return err
+			}
+			printObject(ev)
+			return nil
+		},
+	}
+	cmd.Flags().StringVar(&cal, "calendar", "", "calendar id (default from env OO_CALENDAR_ID)")
+	cmd.Flags().StringVar(&desc, "description", "", "event description")
+	cmd.Flags().BoolVar(&allDay, "all-day", false, "mark as all-day event")
+	return cmd
+}
+
+func calDeleteCmd() *cobra.Command {
+	return &cobra.Command{
+		Use:     "delete EVENT_ID [EVENT_ID...]",
+		Aliases: []string{"rm"},
+		Short:   "Delete one or more calendar events",
+		Args:    cobra.MinimumNArgs(1),
+		RunE: func(cmd *cobra.Command, args []string) error {
+			c, err := newOO(cmd)
+			if err != nil {
+				return err
+			}
+			for _, id := range args {
+				out, err := c.DeleteEvent(cmd.Context(), id)
+				if err != nil {
+					return err
+				}
+				printObject(out)
+			}
+			return nil
+		},
+	}
+}

cmd/oo/cases.go

@@ -0,0 +1,111 @@
+package main
+
+import (
+	"fmt"
+
+	"github.com/spf13/cobra"
+)
+
+var casesCmd = &cobra.Command{
+	Use:     "cases",
+	Aliases: []string{"case"},
+	Short:   "CRM cases",
+}
+
+func init() {
+	rootCmd.AddCommand(casesCmd)
+	casesCmd.AddCommand(casesListCmd())
+	casesCmd.AddCommand(casesCreateCmd())
+	casesCmd.AddCommand(casesDeleteCmd())
+	casesCmd.AddCommand(casesMemberAddCmd())
+}
+
+func casesListCmd() *cobra.Command {
+	var count, offset int
+	cmd := &cobra.Command{
+		Use:   "list",
+		Short: "List CRM cases",
+		RunE: func(cmd *cobra.Command, args []string) error {
+			c, err := newOO(cmd)
+			if err != nil {
+				return err
+			}
+			list, total, err := c.ListCases(cmd.Context(), count, offset)
+			if err != nil {
+				return err
+			}
+			if outputFormat == "table" {
+				fmt.Printf("total: %d (shown: %d)\n", total, len(list))
+			}
+			printTable([]string{"id", "title", "isClosed", "created"}, list)
+			return nil
+		},
+	}
+	cmd.Flags().IntVar(&count, "count", 50, "")
+	cmd.Flags().IntVar(&offset, "offset", 0, "")
+	return cmd
+}
+
+func casesCreateCmd() *cobra.Command {
+	return &cobra.Command{
+		Use:     "create TITLE",
+		Aliases: []string{"add"},
+		Short:   "Create a case",
+		Args:    cobra.ExactArgs(1),
+		RunE: func(cmd *cobra.Command, args []string) error {
+			c, err := newOO(cmd)
+			if err != nil {
+				return err
+			}
+			out, err := c.CreateCase(cmd.Context(), args[0])
+			if err != nil {
+				return err
+			}
+			printObject(out)
+			return nil
+		},
+	}
+}
+
+func casesDeleteCmd() *cobra.Command {
+	return &cobra.Command{
+		Use:     "delete CASE_ID [CASE_ID...]",
+		Aliases: []string{"rm"},
+		Short:   "Delete one or more cases",
+		Args:    cobra.MinimumNArgs(1),
+		RunE: func(cmd *cobra.Command, args []string) error {
+			c, err := newOO(cmd)
+			if err != nil {
+				return err
+			}
+			for _, id := range args {
+				out, err := c.DeleteCase(cmd.Context(), id)
+				if err != nil {
+					return err
+				}
+				printObject(out)
+			}
+			return nil
+		},
+	}
+}
+
+func casesMemberAddCmd() *cobra.Command {
+	return &cobra.Command{
+		Use:   "member-add CASE_ID CONTACT_ID",
+		Short: "Attach a contact to a case",
+		Args:  cobra.ExactArgs(2),
+		RunE: func(cmd *cobra.Command, args []string) error {
+			c, err := newOO(cmd)
+			if err != nil {
+				return err
+			}
+			out, err := c.AddCaseMember(cmd.Context(), args[0], args[1])
+			if err != nil {
+				return err
+			}
+			printObject(out)
+			return nil
+		},
+	}
+}

cmd/oo/cli_test.go

@@ -0,0 +1,94 @@
+package main
+
+import (
+	"bytes"
+	"os"
+	"strings"
+	"testing"
+)
+
+func TestRootRegistersSubjects(t *testing.T) {
+	want := []string{
+		"calendar", "projects", "tasks", "users", "whoami",
+		"contacts", "persons", "companies",
+		"opportunities", "cases", "crm-tasks", "applications", "crm", "mails",
+	}
+	got := make(map[string]bool, len(rootCmd.Commands()))
+	for _, c := range rootCmd.Commands() {
+		got[c.Name()] = true
+	}
+	for _, name := range want {
+		if !got[name] {
+			t.Fatalf("missing root subcommand %q; have %v", name, rootCmd.Commands())
+		}
+	}
+}
+
+func TestRootHelpListsSubjects(t *testing.T) {
+	out := &bytes.Buffer{}
+	rootCmd.SetOut(out)
+	rootCmd.SetErr(&bytes.Buffer{})
+	rootCmd.SetArgs([]string{"--help"})
+	t.Cleanup(func() {
+		rootCmd.SetArgs(nil)
+		rootCmd.SetOut(nil)
+		rootCmd.SetErr(nil)
+	})
+	if err := rootCmd.Execute(); err != nil {
+		t.Fatal(err)
+	}
+	help := out.String()
+	for _, snippet := range []string{"calendar", "projects", "tasks", "users", "opportunities"} {
+		if !strings.Contains(help, snippet) {
+			t.Fatalf("help missing %q", snippet)
+		}
+	}
+}
+
+func TestProjectsAlias(t *testing.T) {
+	cmd, _, err := rootCmd.Find([]string{"prj"})
+	if err != nil {
+		t.Fatal(err)
+	}
+	if cmd.Name() != "projects" {
+		t.Fatalf("prj alias resolved to %q", cmd.Name())
+	}
+}
+
+func TestNewOOReturnsErrorWithoutCredentials(t *testing.T) {
+	clearEnv(t,
+		"ONLYOFFICE_URL", "ONLYOFFICE_HOST", "ONLYOFFICE_USER", "ONLYOFFICE_NAME",
+		"ONLYOFFICE_PASS", "ONLYOFFICE_PASSWORD",
+		"OO_URL", "OO_USER", "OO_PASS",
+	)
+	dir := t.TempDir()
+	oldwd, err := os.Getwd()
+	if err != nil {
+		t.Fatal(err)
+	}
+	if err := os.Chdir(dir); err != nil {
+		t.Fatal(err)
+	}
+	t.Cleanup(func() { _ = os.Chdir(oldwd) })
+
+	errBuf := &bytes.Buffer{}
+	rootCmd.SetErr(errBuf)
+	rootCmd.SetOut(&bytes.Buffer{})
+	rootCmd.SetArgs([]string{"users", "list"})
+	t.Cleanup(func() {
+		rootCmd.SetArgs(nil)
+		rootCmd.SetOut(nil)
+		rootCmd.SetErr(nil)
+	})
+
+	err = rootCmd.Execute()
+	if err == nil {
+		t.Fatal("expected error without credentials")
+	}
+	msg := err.Error()
+	for _, want := range []string{"ONLYOFFICE_URL", "ONLYOFFICE_USER", "ONLYOFFICE_PASS"} {
+		if !strings.Contains(msg, want) {
+			t.Fatalf("error %q missing %q", msg, want)
+		}
+	}
+}

cmd/oo/common.go

@@ -0,0 +1,168 @@
+package main
+
+import (
+	"encoding/json"
+	"fmt"
+	"os"
+	"strconv"
+	"strings"
+	"text/tabwriter"
+
+	onlyoffice "github.com/eslider/go-onlyoffice"
+	"github.com/eslider/go-onlyoffice/cmd/internal/bootstrap"
+	"github.com/spf13/cobra"
+)
+
+// outputFormat is the value of the global --output/-o flag. Valid values:
+// "table" (default, tabwriter-rendered), "json" (machine-readable).
+var outputFormat = "table"
+
+var rootCmd = &cobra.Command{
+	Use:           "oo",
+	Short:         "OnlyOffice Workspace CLI — subject-based command tree",
+	Long:          "oo is a thin CLI over github.com/eslider/go-onlyoffice.\nCommands are grouped by OnlyOffice subject (calendar, projects, tasks, users, persons, companies, opportunities, cases, crm-tasks, applications).",
+	Version:       version,
+	SilenceUsage:  true,
+	SilenceErrors: false,
+}
+
+func init() {
+	rootCmd.PersistentFlags().StringVarP(&outputFormat, "output", "o", "table", "output format: table|json")
+}
+
+// execute runs the root command. Exported only to main.go in the same package.
+func execute() error { return rootCmd.Execute() }
+
+// newOO loads env (only .env in CWD) and returns an authenticated client.
+// godotenv is a CLI-only concern; the library itself never loads dotfiles.
+func newOO(cmd *cobra.Command) (*onlyoffice.Client, error) {
+	return bootstrap.NewClient(cmd.Context())
+}
+
+// printJSON dumps any value as indented JSON.
+func printJSON(v any) {
+	enc := json.NewEncoder(os.Stdout)
+	enc.SetIndent("", "  ")
+	_ = enc.Encode(v)
+}
+
+// printObject renders a single value. JSON output dumps verbatim; table output
+// prints key/value pairs when v is a map, otherwise falls back to JSON.
+func printObject(v any) {
+	if outputFormat == "json" {
+		printJSON(v)
+		return
+	}
+	m, ok := v.(map[string]any)
+	if !ok {
+		printJSON(v)
+		return
+	}
+	w := tabwriter.NewWriter(os.Stdout, 0, 2, 2, ' ', 0)
+	for _, k := range sortedKeys(m) {
+		fmt.Fprintf(w, "%s\t%s\n", k, fmtCell(m[k]))
+	}
+	_ = w.Flush()
+}
+
+// printTable renders a list of rows. headers select & order the columns.
+// When outputFormat=="json" the raw slice is dumped as-is.
+func printTable(headers []string, rows []map[string]any) {
+	if outputFormat == "json" {
+		printJSON(rows)
+		return
+	}
+	if len(rows) == 0 {
+		fmt.Println("(empty)")
+		return
+	}
+	w := tabwriter.NewWriter(os.Stdout, 0, 2, 2, ' ', 0)
+	fmt.Fprintln(w, strings.Join(headers, "\t"))
+	for _, row := range rows {
+		cells := make([]string, len(headers))
+		for i, h := range headers {
+			cells[i] = fmtCell(row[h])
+		}
+		fmt.Fprintln(w, strings.Join(cells, "\t"))
+	}
+	_ = w.Flush()
+}
+
+// fmtCell turns an arbitrary value into a compact table cell.
+func fmtCell(v any) string {
+	switch x := v.(type) {
+	case nil:
+		return ""
+	case string:
+		return truncate(x, 80)
+	case bool:
+		if x {
+			return "true"
+		}
+		return "false"
+	case float64:
+		if x == float64(int64(x)) {
+			return strconv.FormatInt(int64(x), 10)
+		}
+		return strconv.FormatFloat(x, 'f', -1, 64)
+	case int, int32, int64:
+		return fmt.Sprintf("%d", x)
+	default:
+		b, _ := json.Marshal(x)
+		return truncate(string(b), 80)
+	}
+}
+
+func truncate(s string, n int) string {
+	s = strings.ReplaceAll(s, "\n", " ")
+	if len(s) > n {
+		return s[:n-1] + "…"
+	}
+	return s
+}
+
+func sortedKeys(m map[string]any) []string {
+	ks := make([]string, 0, len(m))
+	for k := range m {
+		ks = append(ks, k)
+	}
+	// Deterministic ordering; small map so O(n log n) is fine.
+	for i := 1; i < len(ks); i++ {
+		for j := i; j > 0 && ks[j-1] > ks[j]; j-- {
+			ks[j-1], ks[j] = ks[j], ks[j-1]
+		}
+	}
+	return ks
+}
+
+// flexIDFloat coerces OnlyOffice numeric id fields surfaced as float64 / int
+// / string into a float64.
+func flexIDFloat(v any) float64 {
+	switch x := v.(type) {
+	case float64:
+		return x
+	case int:
+		return float64(x)
+	default:
+		f, _ := strconv.ParseFloat(fmt.Sprint(x), 64)
+		return f
+	}
+}
+
+// idString returns the id field as a string (works for int/float/string).
+func idString(m map[string]any, key string) string {
+	v, ok := m[key]
+	if !ok {
+		return ""
+	}
+	switch x := v.(type) {
+	case string:
+		return x
+	case float64:
+		return strconv.FormatInt(int64(x), 10)
+	case int:
+		return strconv.Itoa(x)
+	default:
+		return fmt.Sprint(x)
+	}
+}

cmd/oo/common_test.go

@@ -0,0 +1,150 @@
+package main
+
+import (
+	"bytes"
+	"io"
+	"os"
+	"strings"
+	"testing"
+)
+
+func TestFmtCell(t *testing.T) {
+	tests := []struct {
+		in   any
+		want string
+	}{
+		{nil, ""},
+		{"hello", "hello"},
+		{true, "true"},
+		{false, "false"},
+		{float64(42), "42"},
+		{float64(1.5), "1.5"},
+		{int64(7), "7"},
+		{map[string]any{"a": 1}, `{"a":1}`},
+	}
+	for _, tc := range tests {
+		if got := fmtCell(tc.in); got != tc.want {
+			t.Fatalf("fmtCell(%#v)=%q want %q", tc.in, got, tc.want)
+		}
+	}
+	long := strings.Repeat("x", 100)
+	got := fmtCell(long)
+	if !strings.HasSuffix(got, "…") || len(got) > 82 {
+		t.Fatalf("fmtCell(long)=%q len=%d", got, len(got))
+	}
+}
+
+func TestTruncate(t *testing.T) {
+	if got := truncate("a\nb", 10); got != "a b" {
+		t.Fatalf("truncate newline=%q", got)
+	}
+	got := truncate(strings.Repeat("z", 20), 10)
+	if !strings.HasSuffix(got, "…") || len(got) >= 20 {
+		t.Fatalf("truncate=%q len=%d", got, len(got))
+	}
+}
+
+func TestSortedKeys(t *testing.T) {
+	got := sortedKeys(map[string]any{"c": 1, "a": 2, "b": 3})
+	want := []string{"a", "b", "c"}
+	for i := range want {
+		if got[i] != want[i] {
+			t.Fatalf("sortedKeys=%v want %v", got, want)
+		}
+	}
+}
+
+func TestFlexIDFloat(t *testing.T) {
+	if got := flexIDFloat(float64(12)); got != 12 {
+		t.Fatalf("float64=%v", got)
+	}
+	if got := flexIDFloat(7); got != 7 {
+		t.Fatalf("int=%v", got)
+	}
+	if got := flexIDFloat("3.5"); got != 3.5 {
+		t.Fatalf("string=%v", got)
+	}
+}
+
+func TestIdString(t *testing.T) {
+	m := map[string]any{"id": float64(99), "s": "x", "i": 5}
+	if got := idString(m, "id"); got != "99" {
+		t.Fatalf("float id=%q", got)
+	}
+	if got := idString(m, "s"); got != "x" {
+		t.Fatalf("string id=%q", got)
+	}
+	if got := idString(m, "i"); got != "5" {
+		t.Fatalf("int id=%q", got)
+	}
+	if got := idString(m, "missing"); got != "" {
+		t.Fatalf("missing=%q", got)
+	}
+}
+
+func TestPrintTableJSON(t *testing.T) {
+	defer func(old string) { outputFormat = old }(outputFormat)
+	outputFormat = "json"
+	out := captureStdout(t, func() {
+		printTable([]string{"id", "name"}, []map[string]any{{"id": 1, "name": "alpha"}})
+	})
+	if !strings.Contains(out, `"id": 1`) || !strings.Contains(out, `"name": "alpha"`) {
+		t.Fatalf("json output=%q", out)
+	}
+}
+
+func TestPrintTableEmpty(t *testing.T) {
+	defer func(old string) { outputFormat = old }(outputFormat)
+	outputFormat = "table"
+	out := captureStdout(t, func() { printTable([]string{"id"}, nil) })
+	if strings.TrimSpace(out) != "(empty)" {
+		t.Fatalf("empty table=%q", out)
+	}
+}
+
+func TestPrintObjectTable(t *testing.T) {
+	defer func(old string) { outputFormat = old }(outputFormat)
+	outputFormat = "table"
+	out := captureStdout(t, func() {
+		printObject(map[string]any{"id": float64(1), "title": "Demo"})
+	})
+	if !strings.Contains(out, "id") || !strings.Contains(out, "title") || !strings.Contains(out, "Demo") {
+		t.Fatalf("table object=%q", out)
+	}
+}
+
+func captureStdout(t *testing.T, fn func()) string {
+	t.Helper()
+	old := os.Stdout
+	r, w, err := os.Pipe()
+	if err != nil {
+		t.Fatal(err)
+	}
+	os.Stdout = w
+	fn()
+	_ = w.Close()
+	os.Stdout = old
+	var buf bytes.Buffer
+	if _, err := io.Copy(&buf, r); err != nil {
+		t.Fatal(err)
+	}
+	_ = r.Close()
+	return buf.String()
+}
+
+func clearEnv(t *testing.T, keys ...string) {
+	t.Helper()
+	for _, key := range keys {
+		old, ok := os.LookupEnv(key)
+		if err := os.Unsetenv(key); err != nil {
+			t.Fatal(err)
+		}
+		t.Cleanup(func() {
+			if ok {
+				_ = os.Setenv(key, old)
+				return
+			}
+			_ = os.Unsetenv(key)
+		})
+	}
+}

cmd/oo/contacts.go

@@ -0,0 +1,313 @@
+package main
+
+import (
+	"fmt"
+	"strconv"
+
+	onlyoffice "github.com/eslider/go-onlyoffice"
+	"github.com/spf13/cobra"
+)
+
+// Contacts cover both persons and companies; OnlyOffice exposes them through
+// the same `crm/contact/*` endpoint family. `oo persons` and `oo companies`
+// are filtered views on top of `oo contacts list`, plus dedicated create
+// commands that pick the right library call.
+
+var contactsCmd = &cobra.Command{
+	Use:     "contacts",
+	Aliases: []string{"contact"},
+	Short:   "CRM contacts (persons + companies)",
+}
+
+var personsCmd = &cobra.Command{
+	Use:     "persons",
+	Aliases: []string{"person"},
+	Short:   "CRM persons (contacts with isCompany=false)",
+}
+
+var companiesCmd = &cobra.Command{
+	Use:     "companies",
+	Aliases: []string{"company"},
+	Short:   "CRM companies (contacts with isCompany=true)",
+}
+
+func init() {
+	rootCmd.AddCommand(contactsCmd)
+	rootCmd.AddCommand(personsCmd)
+	rootCmd.AddCommand(companiesCmd)
+
+	contactsCmd.AddCommand(contactsListCmd(nil))
+	contactsCmd.AddCommand(contactsGetCmd())
+	contactsCmd.AddCommand(contactsDeleteCmd())
+	contactsCmd.AddCommand(contactsInfoAddCmd())
+	contactsCmd.AddCommand(contactsDedupeInfoCmd())
+
+	only := true
+	personsCmd.AddCommand(contactsListCmd(&only)) // persons only
+	personsCmd.AddCommand(personsCreateCmd())
+	personsCmd.AddCommand(contactsDeleteCmd())
+	personsCmd.AddCommand(personsDedupeCmd())
+
+	onlyCo := false
+	companiesCmd.AddCommand(contactsListCmd(&onlyCo)) // companies only
+	companiesCmd.AddCommand(companiesCreateCmd())
+	companiesCmd.AddCommand(contactsDeleteCmd())
+	companiesCmd.AddCommand(companiesDedupeCmd())
+	companiesCmd.AddCommand(companiesDedupePersonsCmd())
+}
+
+// contactsListCmd returns a `list` subcommand.
+//
+//   - personsOnly == nil        → list all contacts
+//   - personsOnly == &true      → keep only persons (isCompany=false)
+//   - personsOnly == &false     → keep only companies (isCompany=true)
+func contactsListCmd(personsOnly *bool) *cobra.Command {
+	var search string
+	var count, offset int
+	cmd := &cobra.Command{
+		Use:   "list",
+		Short: "List contacts",
+		RunE: func(cmd *cobra.Command, args []string) error {
+			c, err := newOO(cmd)
+			if err != nil {
+				return err
+			}
+			list, total, err := c.ListContacts(cmd.Context(), count, offset, search)
+			if err != nil {
+				return err
+			}
+			filtered := list
+			if personsOnly != nil {
+				filtered = filtered[:0]
+				for _, row := range list {
+					isCo, _ := row["isCompany"].(bool)
+					if *personsOnly && isCo {
+						continue
+					}
+					if !*personsOnly && !isCo {
+						continue
+					}
+					filtered = append(filtered, row)
+				}
+			}
+			if outputFormat == "table" {
+				fmt.Printf("total: %d (shown: %d)\n", total, len(filtered))
+			}
+			printTable([]string{"id", "displayName", "isCompany", "email", "companyName"}, filtered)
+			return nil
+		},
+	}
+	cmd.Flags().StringVar(&search, "search", "", "search filter")
+	cmd.Flags().IntVar(&count, "count", 50, "")
+	cmd.Flags().IntVar(&offset, "offset", 0, "")
+	return cmd
+}
+
+func contactsGetCmd() *cobra.Command {
+	return &cobra.Command{
+		Use:   "get CONTACT_ID",
+		Short: "Show a contact by id",
+		Args:  cobra.ExactArgs(1),
+		RunE: func(cmd *cobra.Command, args []string) error {
+			c, err := newOO(cmd)
+			if err != nil {
+				return err
+			}
+			out, err := c.GetContact(cmd.Context(), args[0])
+			if err != nil {
+				return err
+			}
+			printObject(out)
+			return nil
+		},
+	}
+}
+
+func contactsDeleteCmd() *cobra.Command {
+	return &cobra.Command{
+		Use:     "delete CONTACT_ID [CONTACT_ID...]",
+		Aliases: []string{"rm"},
+		Short:   "Delete one or more contacts",
+		Args:    cobra.MinimumNArgs(1),
+		RunE: func(cmd *cobra.Command, args []string) error {
+			c, err := newOO(cmd)
+			if err != nil {
+				return err
+			}
+			for _, id := range args {
+				out, err := c.DeleteContact(cmd.Context(), id)
+				if err != nil {
+					return err
+				}
+				printObject(out)
+			}
+			return nil
+		},
+	}
+}
+
+func contactsInfoAddCmd() *cobra.Command {
+	var infoType, value, category string
+	var isPrimary bool
+	cmd := &cobra.Command{
+		Use:   "info-add CONTACT_ID",
+		Short: "Add a contact info entry (email, phone, website, linkedin, …)",
+		Args:  cobra.ExactArgs(1),
+		RunE: func(cmd *cobra.Command, args []string) error {
+			if infoType == "" || value == "" {
+				return fmt.Errorf("--type and --value are required")
+			}
+			c, err := newOO(cmd)
+			if err != nil {
+				return err
+			}
+			out, err := c.AddContactInfo(cmd.Context(), args[0], infoType, value, category, isPrimary)
+			if err != nil {
+				return err
+			}
+			printObject(out)
+			return nil
+		},
+	}
+	cmd.Flags().StringVar(&infoType, "type", "", "Email|Phone|Website|LinkedIn|…")
+	cmd.Flags().StringVar(&value, "value", "", "value")
+	cmd.Flags().StringVar(&category, "category", "Work", "Work|Home|Other")
+	cmd.Flags().BoolVar(&isPrimary, "primary", false, "mark as primary")
+	return cmd
+}
+
+func personsCreateCmd() *cobra.Command {
+	var first, last, email, linkedin string
+	var companyID int
+	var jobTitle, about string
+	cmd := &cobra.Command{
+		Use:     "create",
+		Aliases: []string{"add"},
+		Short:   "Create a person",
+		RunE: func(cmd *cobra.Command, args []string) error {
+			if first == "" || last == "" {
+				return fmt.Errorf("--first and --last are required")
+			}
+			c, err := newOO(cmd)
+			if err != nil {
+				return err
+			}
+			out, err := c.CreatePerson(cmd.Context(), first, last, companyID, jobTitle, about)
+			if err != nil {
+				return err
+			}
+			pid := strconv.Itoa(int(flexIDFloat(out["id"])))
+			if email != "" {
+				_, _ = c.AddContactInfo(cmd.Context(), pid, "Email", email, "Work", true)
+			}
+			if linkedin != "" {
+				_, _ = c.AddContactInfo(cmd.Context(), pid, "LinkedIn", linkedin, "Work", false)
+			}
+			printObject(out)
+			return nil
+		},
+	}
+	cmd.Flags().StringVar(&first, "first", "", "first name")
+	cmd.Flags().StringVar(&last, "last", "", "last name")
+	cmd.Flags().IntVar(&companyID, "company-id", 0, "employer company id")
+	cmd.Flags().StringVar(&jobTitle, "job-title", "", "")
+	cmd.Flags().StringVar(&about, "about", "", "about / bio")
+	cmd.Flags().StringVar(&email, "email", "", "primary email (adds ContactInfo)")
+	cmd.Flags().StringVar(&linkedin, "linkedin", "", "linkedin url (adds ContactInfo)")
+	return cmd
+}
+
+func companiesCreateCmd() *cobra.Command {
+	var name, email, website string
+	cmd := &cobra.Command{
+		Use:     "create",
+		Aliases: []string{"add"},
+		Short:   "Create a company",
+		RunE: func(cmd *cobra.Command, args []string) error {
+			if name == "" {
+				return fmt.Errorf("--name is required")
+			}
+			c, err := newOO(cmd)
+			if err != nil {
+				return err
+			}
+			out, err := c.CreateCompany(cmd.Context(), name)
+			if err != nil {
+				return err
+			}
+			cid := strconv.Itoa(int(flexIDFloat(out["id"])))
+			if email != "" {
+				_, _ = c.AddContactInfo(cmd.Context(), cid, "Email", email, "Work", true)
+			}
+			if website != "" {
+				_, _ = c.AddContactInfo(cmd.Context(), cid, "Website", website, "Work", false)
+			}
+			printObject(out)
+			return nil
+		},
+	}
+	cmd.Flags().StringVar(&name, "name", "", "company name")
+	cmd.Flags().StringVar(&email, "email", "", "primary email (adds ContactInfo)")
+	cmd.Flags().StringVar(&website, "website", "", "website url (adds ContactInfo)")
+	return cmd
+}
+
+func companiesDedupeCmd() *cobra.Command {
+	return &cobra.Command{
+		Use:   "dedupe",
+		Short: "Merge duplicate companies by normalized name",
+		RunE: dedupeRunE(func(cmd *cobra.Command, c *onlyoffice.Client) error {
+			res, err := onlyoffice.DedupeCompanies(cmd.Context(), c)
+			if err != nil {
+				return err
+			}
+			printObject(res)
+			return nil
+		}),
+	}
+}
+
+func companiesDedupePersonsCmd() *cobra.Command {
+	return &cobra.Command{
+		Use:   "dedupe-persons",
+		Short: "Merge duplicate persons under each company",
+		RunE: dedupeRunE(func(cmd *cobra.Command, c *onlyoffice.Client) error {
+			res, err := onlyoffice.DedupeCompanyPersons(cmd.Context(), c)
+			if err != nil {
+				return err
+			}
+			printObject(res)
+			return nil
+		}),
+	}
+}
+
+func personsDedupeCmd() *cobra.Command {
+	return &cobra.Command{
+		Use:   "dedupe",
+		Short: "Merge duplicate persons by normalized first+last name",
+		RunE: dedupeRunE(func(cmd *cobra.Command, c *onlyoffice.Client) error {
+			res, err := onlyoffice.DedupePersons(cmd.Context(), c)
+			if err != nil {
+				return err
+			}
+			printObject(res)
+			return nil
+		}),
+	}
+}
+
+func contactsDedupeInfoCmd() *cobra.Command {
+	return &cobra.Command{
+		Use:   "dedupe-info",
+		Short: "Remove duplicate contact info rows (email, phone, …)",
+		RunE: dedupeRunE(func(cmd *cobra.Command, c *onlyoffice.Client) error {
+			res, err := onlyoffice.DedupeContactInfo(cmd.Context(), c)
+			if err != nil {
+				return err
+			}
+			printObject(res)
+			return nil
+		}),
+	}
+}

cmd/oo/crm.go

@@ -0,0 +1,48 @@
+package main
+
+import (
+	onlyoffice "github.com/eslider/go-onlyoffice"
+	"github.com/spf13/cobra"
+)
+
+var crmCmd = &cobra.Command{
+	Use:   "crm",
+	Short: "CRM maintenance (dedupe, cleanup)",
+}
+
+func init() {
+	rootCmd.AddCommand(crmCmd)
+	crmCmd.AddCommand(crmCleanupCmd())
+}
+
+func crmCleanupCmd() *cobra.Command {
+	var ignoreCompanySuffix bool
+	cmd := &cobra.Command{
+		Use:   "cleanup",
+		Short: "Run all CRM dedupe passes (companies, persons, associations, titles)",
+		RunE: func(cmd *cobra.Command, args []string) error {
+			c, err := newOO(cmd)
+			if err != nil {
+				return err
+			}
+			out, err := onlyoffice.CleanupCRM(cmd.Context(), c, ignoreCompanySuffix)
+			if err != nil {
+				return err
+			}
+			printObject(out)
+			return nil
+		},
+	}
+	cmd.Flags().BoolVar(&ignoreCompanySuffix, "ignore-company-suffix", false, "group deals by position only (strip ' @ Company')")
+	return cmd
+}
+
+func dedupeRunE(fn func(cmd *cobra.Command, c *onlyoffice.Client) error) func(*cobra.Command, []string) error {
+	return func(cmd *cobra.Command, args []string) error {
+		c, err := newOO(cmd)
+		if err != nil {
+			return err
+		}
+		return fn(cmd, c)
+	}
+}

cmd/oo/crm_tasks.go

@@ -0,0 +1,123 @@
+package main
+
+import (
+	"fmt"
+	"strconv"
+
+	"github.com/spf13/cobra"
+)
+
+var crmTasksCmd = &cobra.Command{
+	Use:     "crm-tasks",
+	Aliases: []string{"crm-task"},
+	Short:   "CRM tasks (standalone, not project tasks)",
+}
+
+func init() {
+	rootCmd.AddCommand(crmTasksCmd)
+	crmTasksCmd.AddCommand(crmTasksListCmd())
+	crmTasksCmd.AddCommand(crmTasksCreateCmd())
+	crmTasksCmd.AddCommand(crmTasksDeleteCmd())
+	crmTasksCmd.AddCommand(crmTasksCategoriesCmd())
+}
+
+func crmTasksListCmd() *cobra.Command {
+	var count, offset int
+	cmd := &cobra.Command{
+		Use:   "list",
+		Short: "List CRM tasks",
+		RunE: func(cmd *cobra.Command, args []string) error {
+			c, err := newOO(cmd)
+			if err != nil {
+				return err
+			}
+			list, total, err := c.ListCRMTasks(cmd.Context(), count, offset)
+			if err != nil {
+				return err
+			}
+			if outputFormat == "table" {
+				fmt.Printf("total: %d (shown: %d)\n", total, len(list))
+			}
+			printTable([]string{"id", "title", "deadline", "isClosed", "categoryID"}, list)
+			return nil
+		},
+	}
+	cmd.Flags().IntVar(&count, "count", 50, "")
+	cmd.Flags().IntVar(&offset, "offset", 0, "")
+	return cmd
+}
+
+func crmTasksCreateCmd() *cobra.Command {
+	var deadline, desc, entityType string
+	var categoryID, contactID, entityID int
+	cmd := &cobra.Command{
+		Use:     "create TITLE",
+		Aliases: []string{"add"},
+		Short:   "Create a CRM task",
+		Args:    cobra.ExactArgs(1),
+		RunE: func(cmd *cobra.Command, args []string) error {
+			c, err := newOO(cmd)
+			if err != nil {
+				return err
+			}
+			out, err := c.CreateCRMTask(cmd.Context(), args[0], deadline, categoryID, contactID, entityType, entityID, desc)
+			if err != nil {
+				return err
+			}
+			printObject(out)
+			return nil
+		},
+	}
+	cmd.Flags().StringVar(&deadline, "deadline", "", "deadline (YYYY-MM-DD or ISO8601)")
+	cmd.Flags().IntVar(&categoryID, "category", 0, "category id (see `oo crm-tasks categories`)")
+	cmd.Flags().IntVar(&contactID, "contact", 0, "contact id")
+	cmd.Flags().StringVar(&entityType, "entity-type", "", "opportunity|case|contact")
+	cmd.Flags().IntVar(&entityID, "entity-id", 0, "parent entity id")
+	cmd.Flags().StringVar(&desc, "description", "", "description")
+	return cmd
+}
+
+func crmTasksDeleteCmd() *cobra.Command {
+	return &cobra.Command{
+		Use:     "delete TASK_ID [TASK_ID...]",
+		Aliases: []string{"rm"},
+		Short:   "Delete CRM tasks",
+		Args:    cobra.MinimumNArgs(1),
+		RunE: func(cmd *cobra.Command, args []string) error {
+			c, err := newOO(cmd)
+			if err != nil {
+				return err
+			}
+			for _, id := range args {
+				if _, err := strconv.Atoi(id); err != nil {
+					return fmt.Errorf("task id %q must be integer: %w", id, err)
+				}
+				out, err := c.DeleteCRMTask(cmd.Context(), id)
+				if err != nil {
+					return err
+				}
+				printObject(out)
+			}
+			return nil
+		},
+	}
+}
+
+func crmTasksCategoriesCmd() *cobra.Command {
+	return &cobra.Command{
+		Use:   "categories",
+		Short: "List CRM task categories",
+		RunE: func(cmd *cobra.Command, args []string) error {
+			c, err := newOO(cmd)
+			if err != nil {
+				return err
+			}
+			out, err := c.ListTaskCategories(cmd.Context())
+			if err != nil {
+				return err
+			}
+			printTable([]string{"id", "title", "sortOrder", "imagePath"}, out)
+			return nil
+		},
+	}
+}

cmd/oo/mails.go

@@ -0,0 +1,156 @@
+package main
+
+import (
+	"strconv"
+	"strings"
+
+	onlyoffice "github.com/eslider/go-onlyoffice"
+	"github.com/spf13/cobra"
+)
+
+var mailsCmd = &cobra.Command{
+	Use:     "mails",
+	Aliases: []string{"mail"},
+	Short:   "OnlyOffice Workspace mail — list, read, delete",
+}
+
+func init() {
+	rootCmd.AddCommand(mailsCmd)
+	mailsCmd.AddCommand(mailsAccountsCmd())
+	mailsCmd.AddCommand(mailsFoldersCmd())
+	mailsCmd.AddCommand(mailsListCmd())
+	mailsCmd.AddCommand(mailsGetCmd())
+	mailsCmd.AddCommand(mailsDeleteCmd())
+}
+
+func mailsAccountsCmd() *cobra.Command {
+	return &cobra.Command{
+		Use:   "accounts",
+		Short: "List mailboxes linked to your OnlyOffice account",
+		RunE: func(cmd *cobra.Command, args []string) error {
+			c, err := newOO(cmd)
+			if err != nil {
+				return err
+			}
+			accounts, err := c.ListMailAccounts(cmd.Context())
+			if err != nil {
+				return err
+			}
+			if outputFormat == "json" {
+				printObject(accounts)
+				return nil
+			}
+			printTable([]string{"mailboxId", "email", "enabled", "isDefault"}, onlyoffice.MailAccountsAsTableRows(accounts))
+			return nil
+		},
+	}
+}
+
+func mailsFoldersCmd() *cobra.Command {
+	return &cobra.Command{
+		Use:   "folders",
+		Short: "List mail folders (inbox, sent, trash, …)",
+		RunE: func(cmd *cobra.Command, args []string) error {
+			c, err := newOO(cmd)
+			if err != nil {
+				return err
+			}
+			folders, err := c.ListMailFolders(cmd.Context())
+			if err != nil {
+				return err
+			}
+			if outputFormat == "json" {
+				printObject(folders)
+				return nil
+			}
+			printTable([]string{"id", "unread", "total_count", "time_modified"}, onlyoffice.MailFoldersAsTableRows(folders))
+			return nil
+		},
+	}
+}
+
+func mailsListCmd() *cobra.Command {
+	var folder string
+	var limit, offset int
+	cmd := &cobra.Command{
+		Use:   "list",
+		Short: "List messages in a folder (default inbox)",
+		RunE: func(cmd *cobra.Command, args []string) error {
+			c, err := newOO(cmd)
+			if err != nil {
+				return err
+			}
+			folderID, err := onlyoffice.ResolveMailFolder(folder)
+			if err != nil {
+				return err
+			}
+			msgs, err := c.ListMailMessages(cmd.Context(), onlyoffice.MailMessagesFilter{
+				Folder:     folderID,
+				Count:      limit,
+				StartIndex: offset,
+			})
+			if err != nil {
+				return err
+			}
+			if outputFormat == "json" {
+				printObject(msgs)
+				return nil
+			}
+			printTable([]string{"id", "subject", "fromName", "fromAddress", "date", "folder", "size", "isNew"}, onlyoffice.MailMessagesAsTableRows(msgs))
+			return nil
+		},
+	}
+	cmd.Flags().StringVarP(&folder, "folder", "f", "inbox", "folder name (inbox|sent|drafts|trash|spam) or numeric id")
+	cmd.Flags().IntVar(&limit, "limit", 50, "max messages to return (paginates past API page size of 25)")
+	cmd.Flags().IntVar(&offset, "offset", 0, "skip this many messages before listing")
+	return cmd
+}
+
+func mailsGetCmd() *cobra.Command {
+	return &cobra.Command{
+		Use:   "get MESSAGE_ID",
+		Short: "Read one message by numeric id",
+		Args:  cobra.ExactArgs(1),
+		RunE: func(cmd *cobra.Command, args []string) error {
+			c, err := newOO(cmd)
+			if err != nil {
+				return err
+			}
+			out, err := c.GetMailMessage(cmd.Context(), args[0])
+			if err != nil {
+				return err
+			}
+			printObject(out)
+			return nil
+		},
+	}
+}
+
+func mailsDeleteCmd() *cobra.Command {
+	return &cobra.Command{
+		Use:     "delete ID [ID...]",
+		Aliases: []string{"rm"},
+		Short:   "Remove messages from the mailbox (moves to trash or deletes permanently per server rules)",
+		Args:    cobra.MinimumNArgs(1),
+		RunE: func(cmd *cobra.Command, args []string) error {
+			c, err := newOO(cmd)
+			if err != nil {
+				return err
+			}
+			ids := make([]int, 0, len(args))
+			for _, a := range args {
+				id, err := strconv.Atoi(strings.TrimSpace(a))
+				if err != nil {
+					return err
+				}
+				ids = append(ids, id)
+			}
+			out, err := c.RemoveMailMessages(cmd.Context(), ids...)
+			if err != nil {
+				return err
+			}
+			printObject(out)
+			return nil
+		},
+	}
+}

cmd/oo/main.go

@@ -0,0 +1,36 @@
+// Command oo is a thin CLI over the github.com/eslider/go-onlyoffice library.
+//
+// Command tree is subject-based (mirrors the library split and the `tea` CLI):
+//
+//	oo calendar      list | events | add | delete
+//	oo projects      list | get | milestones | create | update | delete | files (list|upload|download|rename|delete)
+//	oo tasks         list | get | create | update | delete | subtask add | files (list|upload|detach)
+//	oo users         list | self            (alias: oo whoami)
+//	oo contacts      list | get | delete | info-add | dedupe-info
+//	oo persons       list | create | delete | dedupe
+//	oo companies     list | create | delete | dedupe | dedupe-persons
+//	oo opportunities list | get | create | delete | stages | member-add | dedupe | dedupe-members | fix-titles
+//	oo cases         list | create | delete | member-add
+//	oo crm-tasks     list | create | delete | categories
+//	oo crm           cleanup
+//	oo mails         accounts | folders | list | get | delete
+//	oo applications  sync
+//
+// Every list supports `--output/-o json|table` (table is the default).
+//
+// Build & install:
+//
+//	go install github.com/eslider/go-onlyoffice/cmd/oo@latest
+package main
+
+import (
+	"fmt"
+	"os"
+)
+
+func main() {
+	if err := execute(); err != nil {
+		fmt.Fprintln(os.Stderr, err)
+		os.Exit(1)
+	}
+}

cmd/oo/opportunities.go

@@ -0,0 +1,229 @@
+package main
+
+import (
+	"fmt"
+	"strconv"
+
+	onlyoffice "github.com/eslider/go-onlyoffice"
+	"github.com/spf13/cobra"
+)
+
+var opportunitiesCmd = &cobra.Command{
+	Use:     "opportunities",
+	Aliases: []string{"deals", "deal"},
+	Short:   "CRM opportunities (a.k.a. deals)",
+}
+
+func init() {
+	rootCmd.AddCommand(opportunitiesCmd)
+	opportunitiesCmd.AddCommand(oppListCmd())
+	opportunitiesCmd.AddCommand(oppGetCmd())
+	opportunitiesCmd.AddCommand(oppCreateCmd())
+	opportunitiesCmd.AddCommand(oppDeleteCmd())
+	opportunitiesCmd.AddCommand(oppStagesCmd())
+	opportunitiesCmd.AddCommand(oppMemberAddCmd())
+	opportunitiesCmd.AddCommand(oppDedupeCmd())
+	opportunitiesCmd.AddCommand(oppDedupeMembersCmd())
+	opportunitiesCmd.AddCommand(oppFixTitlesCmd())
+}
+
+func oppListCmd() *cobra.Command {
+	var count, offset int
+	cmd := &cobra.Command{
+		Use:   "list",
+		Short: "List opportunities",
+		RunE: func(cmd *cobra.Command, args []string) error {
+			c, err := newOO(cmd)
+			if err != nil {
+				return err
+			}
+			list, total, err := c.ListOpportunities(cmd.Context(), count, offset)
+			if err != nil {
+				return err
+			}
+			if outputFormat == "table" {
+				fmt.Printf("total: %d (shown: %d)\n", total, len(list))
+				// Flatten nested bidCurrency {abbreviation, ...} for readability.
+				for _, row := range list {
+					if cur, ok := row["bidCurrency"].(map[string]any); ok {
+						row["bidCurrency"] = cur["abbreviation"]
+					}
+				}
+			}
+			printTable([]string{"id", "title", "bidValue", "bidCurrency", "stageName"}, list)
+			return nil
+		},
+	}
+	cmd.Flags().IntVar(&count, "count", 100, "")
+	cmd.Flags().IntVar(&offset, "offset", 0, "")
+	return cmd
+}
+
+func oppGetCmd() *cobra.Command {
+	return &cobra.Command{
+		Use:   "get OPPORTUNITY_ID",
+		Short: "Show an opportunity by id",
+		Args:  cobra.ExactArgs(1),
+		RunE: func(cmd *cobra.Command, args []string) error {
+			c, err := newOO(cmd)
+			if err != nil {
+				return err
+			}
+			out, err := c.GetOpportunity(cmd.Context(), args[0])
+			if err != nil {
+				return err
+			}
+			printObject(out)
+			return nil
+		},
+	}
+}
+
+func oppCreateCmd() *cobra.Command {
+	var stage int
+	var bid float64
+	var currency, responsible, desc string
+	var contacts []string
+	cmd := &cobra.Command{
+		Use:     "create TITLE",
+		Aliases: []string{"add"},
+		Short:   "Create an opportunity",
+		Args:    cobra.ExactArgs(1),
+		RunE: func(cmd *cobra.Command, args []string) error {
+			c, err := newOO(cmd)
+			if err != nil {
+				return err
+			}
+			if stage == 0 {
+				stage = 1
+			}
+			out, err := c.CreateOpportunity(cmd.Context(), args[0], stage, responsible, currency, desc, bid)
+			if err != nil {
+				return err
+			}
+			did := strconv.Itoa(int(flexIDFloat(out["id"])))
+			for _, cid := range contacts {
+				_, _ = c.AddOpportunityMember(cmd.Context(), did, cid)
+			}
+			printObject(out)
+			return nil
+		},
+	}
+	cmd.Flags().IntVar(&stage, "stage", 1, "pipeline stage id")
+	cmd.Flags().Float64Var(&bid, "bid", 0, "bid value")
+	cmd.Flags().StringVar(&currency, "currency", "EUR", "bid currency")
+	cmd.Flags().StringVar(&responsible, "responsible", "", "responsible user id")
+	cmd.Flags().StringVar(&desc, "description", "", "description")
+	cmd.Flags().StringSliceVar(&contacts, "contact", nil, "contact id to add as member (repeatable)")
+	return cmd
+}
+
+func oppDeleteCmd() *cobra.Command {
+	return &cobra.Command{
+		Use:     "delete OPPORTUNITY_ID [OPPORTUNITY_ID...]",
+		Aliases: []string{"rm"},
+		Short:   "Delete one or more opportunities",
+		Args:    cobra.MinimumNArgs(1),
+		RunE: func(cmd *cobra.Command, args []string) error {
+			c, err := newOO(cmd)
+			if err != nil {
+				return err
+			}
+			for _, id := range args {
+				out, err := c.DeleteOpportunity(cmd.Context(), id)
+				if err != nil {
+					return err
+				}
+				printObject(out)
+			}
+			return nil
+		},
+	}
+}
+
+func oppStagesCmd() *cobra.Command {
+	return &cobra.Command{
+		Use:   "stages",
+		Short: "List pipeline stages",
+		RunE: func(cmd *cobra.Command, args []string) error {
+			c, err := newOO(cmd)
+			if err != nil {
+				return err
+			}
+			out, err := c.ListDealStages(cmd.Context())
+			if err != nil {
+				return err
+			}
+			printTable([]string{"id", "title", "sortOrder", "color"}, out)
+			return nil
+		},
+	}
+}
+
+func oppMemberAddCmd() *cobra.Command {
+	return &cobra.Command{
+		Use:   "member-add OPPORTUNITY_ID CONTACT_ID",
+		Short: "Attach a contact to an opportunity",
+		Args:  cobra.ExactArgs(2),
+		RunE: func(cmd *cobra.Command, args []string) error {
+			c, err := newOO(cmd)
+			if err != nil {
+				return err
+			}
+			out, err := c.AddOpportunityMember(cmd.Context(), args[0], args[1])
+			if err != nil {
+				return err
+			}
+			printObject(out)
+			return nil
+		},
+	}
+}
+
+func oppDedupeCmd() *cobra.Command {
+	var ignoreCompanySuffix bool
+	cmd := &cobra.Command{
+		Use:   "dedupe",
+		Short: "Merge duplicate opportunities by title",
+		RunE: dedupeRunE(func(cmd *cobra.Command, c *onlyoffice.Client) error {
+			res, err := onlyoffice.DedupeOpportunities(cmd.Context(), c, ignoreCompanySuffix)
+			if err != nil {
+				return err
+			}
+			printObject(res)
+			return nil
+		}),
+	}
+	cmd.Flags().BoolVar(&ignoreCompanySuffix, "ignore-company-suffix", false, "group by position only")
+	return cmd
+}
+
+func oppDedupeMembersCmd() *cobra.Command {
+	return &cobra.Command{
+		Use:   "dedupe-members",
+		Short: "Remove duplicate contacts on each deal (by id and display name)",
+		RunE: dedupeRunE(func(cmd *cobra.Command, c *onlyoffice.Client) error {
+			res, err := onlyoffice.DedupeOpportunityMembers(cmd.Context(), c)
+			if err != nil {
+				return err
+			}
+			printObject(res)
+			return nil
+		}),
+	}
+}
+
+func oppFixTitlesCmd() *cobra.Command {
+	return &cobra.Command{
+		Use:   "fix-titles",
+		Short: "Fix malformed deal titles (leading @, spacing)",
+		RunE: dedupeRunE(func(cmd *cobra.Command, c *onlyoffice.Client) error {
+			res, err := onlyoffice.FixOpportunityTitles(cmd.Context(), c)
+			if err != nil {
+				return err
+			}
+			printObject(res)
+			return nil
+		}),
+	}
+}

cmd/oo/projects.go

@@ -0,0 +1,231 @@
+package main
+
+import (
+	"fmt"
+	"strconv"
+
+	onlyoffice "github.com/eslider/go-onlyoffice"
+	"github.com/spf13/cobra"
+)
+
+var projectsCmd = &cobra.Command{
+	Use:     "projects",
+	Aliases: []string{"prj"},
+	Short:   "OnlyOffice Projects",
+}
+
+func init() {
+	rootCmd.AddCommand(projectsCmd)
+	projectsCmd.AddCommand(prjListCmd())
+	projectsCmd.AddCommand(prjGetCmd())
+	projectsCmd.AddCommand(prjMilestonesCmd())
+	projectsCmd.AddCommand(prjCreateCmd())
+	projectsCmd.AddCommand(prjUpdateCmd())
+	projectsCmd.AddCommand(prjDeleteCmd())
+}
+
+func prjListCmd() *cobra.Command {
+	return &cobra.Command{
+		Use:   "list",
+		Short: "List all projects",
+		RunE: func(cmd *cobra.Command, args []string) error {
+			c, err := newOO(cmd)
+			if err != nil {
+				return err
+			}
+			list, err := c.GetProjects()
+			if err != nil {
+				return err
+			}
+			rows := make([]map[string]any, 0, len(list))
+			for _, p := range list {
+				row := map[string]any{
+					"id":     derefInt(p.ID),
+					"title":  p.String(),
+					"status": derefInt(p.Status),
+				}
+				if p.TaskCount != nil {
+					row["tasks"] = *p.TaskCount
+				}
+				if p.IsPrivate != nil {
+					row["private"] = *p.IsPrivate
+				}
+				rows = append(rows, row)
+			}
+			printTable([]string{"id", "title", "status", "tasks", "private"}, rows)
+			return nil
+		},
+	}
+}
+
+func prjGetCmd() *cobra.Command {
+	return &cobra.Command{
+		Use:   "get [PROJECT_ID]",
+		Short: "Show a single project (default: $OO_PROJECT_ID)",
+		Args:  cobra.MaximumNArgs(1),
+		RunE: func(cmd *cobra.Command, args []string) error {
+			c, err := newOO(cmd)
+			if err != nil {
+				return err
+			}
+			id := ""
+			if len(args) == 1 {
+				id = args[0]
+			}
+			out, err := c.GetProjectByID(cmd.Context(), id)
+			if err != nil {
+				return err
+			}
+			printObject(out)
+			return nil
+		},
+	}
+}
+
+func prjMilestonesCmd() *cobra.Command {
+	return &cobra.Command{
+		Use:   "milestones PROJECT_ID",
+		Short: "List milestones of a project",
+		Args:  cobra.ExactArgs(1),
+		RunE: func(cmd *cobra.Command, args []string) error {
+			c, err := newOO(cmd)
+			if err != nil {
+				return err
+			}
+			pid, err := strconv.Atoi(args[0])
+			if err != nil {
+				return fmt.Errorf("project id must be integer: %w", err)
+			}
+			ms, err := c.GetProjectMilestones(&onlyoffice.Project{ID: &pid})
+			if err != nil {
+				return err
+			}
+			rows := make([]map[string]any, 0, len(ms))
+			for _, m := range ms {
+				rows = append(rows, map[string]any{
+					"id":     derefInt64(m.ID),
+					"title":  derefString(m.Title),
+					"status": derefInt64(m.Status),
+				})
+			}
+			printTable([]string{"id", "title", "status"}, rows)
+			return nil
+		},
+	}
+}
+
+func prjCreateCmd() *cobra.Command {
+	var desc, resp string
+	cmd := &cobra.Command{
+		Use:   "create TITLE",
+		Short: "Create a new project",
+		Args:  cobra.ExactArgs(1),
+		RunE: func(cmd *cobra.Command, args []string) error {
+			c, err := newOO(cmd)
+			if err != nil {
+				return err
+			}
+			p, err := c.CreateProject(onlyoffice.NewProjectRequest{
+				Title:         args[0],
+				Description:   desc,
+				ResponsibleID: resp,
+			})
+			if err != nil {
+				return err
+			}
+			printObject(map[string]any{
+				"id":    derefInt(p.ID),
+				"title": p.String(),
+			})
+			return nil
+		},
+	}
+	cmd.Flags().StringVar(&desc, "description", "", "project description")
+	cmd.Flags().StringVar(&resp, "responsible", "", "responsible user id (default: self)")
+	return cmd
+}
+
+func prjUpdateCmd() *cobra.Command {
+	var title, desc, resp string
+	cmd := &cobra.Command{
+		Use:   "update PROJECT_ID",
+		Short: "Update project fields (only non-empty)",
+		Args:  cobra.ExactArgs(1),
+		RunE: func(cmd *cobra.Command, args []string) error {
+			c, err := newOO(cmd)
+			if err != nil {
+				return err
+			}
+			id, err := strconv.Atoi(args[0])
+			if err != nil {
+				return fmt.Errorf("project id must be integer: %w", err)
+			}
+			p, err := c.UpdateProject(onlyoffice.ProjectUpdateRequest{
+				ID:            id,
+				Title:         title,
+				Description:   desc,
+				ResponsibleID: resp,
+			})
+			if err != nil {
+				return err
+			}
+			printObject(map[string]any{
+				"id":    derefInt(p.ID),
+				"title": p.String(),
+			})
+			return nil
+		},
+	}
+	cmd.Flags().StringVar(&title, "title", "", "new title")
+	cmd.Flags().StringVar(&desc, "description", "", "new description")
+	cmd.Flags().StringVar(&resp, "responsible", "", "new responsible user id")
+	return cmd
+}
+
+func prjDeleteCmd() *cobra.Command {
+	return &cobra.Command{
+		Use:     "delete PROJECT_ID [PROJECT_ID...]",
+		Aliases: []string{"rm"},
+		Short:   "Delete one or more projects",
+		Args:    cobra.MinimumNArgs(1),
+		RunE: func(cmd *cobra.Command, args []string) error {
+			c, err := newOO(cmd)
+			if err != nil {
+				return err
+			}
+			for _, raw := range args {
+				id, err := strconv.Atoi(raw)
+				if err != nil {
+					return fmt.Errorf("project id %q must be integer: %w", raw, err)
+				}
+				p, err := c.DeleteProject(id)
+				if err != nil {
+					return err
+				}
+				printObject(map[string]any{"id": derefInt(p.ID), "title": p.String()})
+			}
+			return nil
+		},
+	}
+}
+
+func derefString(p *string) string {
+	if p == nil {
+		return ""
+	}
+	return *p
+}
+
+func derefInt(p *int) int {
+	if p == nil {
+		return 0
+	}
+	return *p
+}
+
+func derefInt64(p *int64) int64 {
+	if p == nil {
+		return 0
+	}
+	return *p
+}

cmd/oo/projects_files.go

@@ -0,0 +1,223 @@
+package main
+
+import (
+	"fmt"
+	"os"
+	"strconv"
+	"time"
+
+	onlyoffice "github.com/eslider/go-onlyoffice"
+	"github.com/spf13/cobra"
+)
+
+func init() {
+	projectsCmd.AddCommand(projectFilesCmd())
+}
+
+func projectFilesCmd() *cobra.Command {
+	cmd := &cobra.Command{
+		Use:   "files",
+		Short: "Project Documents folder: list, upload, download, rename, delete",
+	}
+	cmd.AddCommand(prjFilesListCmd())
+	cmd.AddCommand(prjFilesUploadCmd())
+	cmd.AddCommand(prjFilesDownloadCmd())
+	cmd.AddCommand(prjFilesRenameCmd())
+	cmd.AddCommand(prjFilesDeleteCmd())
+	return cmd
+}
+
+func prjFilesListCmd() *cobra.Command {
+	var showFolders bool
+	cmd := &cobra.Command{
+		Use:   "list PROJECT_ID",
+		Short: "List files (and optionally folders) attached to the project",
+		Args:  cobra.ExactArgs(1),
+		RunE: func(cmd *cobra.Command, args []string) error {
+			c, err := newOO(cmd)
+			if err != nil {
+				return err
+			}
+			pf, err := c.GetProjectFiles(cmd.Context(), args[0])
+			if err != nil {
+				return err
+			}
+			if showFolders && len(pf.Folders) > 0 {
+				frows := make([]map[string]any, 0, len(pf.Folders))
+				for _, f := range pf.Folders {
+					if f == nil {
+						continue
+					}
+					frows = append(frows, map[string]any{
+						"id":            folderIDStr(f),
+						"title":       derefString(f.Title),
+						"filesCount":   derefInt(f.FilesCount),
+						"foldersCount": derefInt(f.FoldersCount),
+					})
+				}
+				if outputFormat == "table" {
+					fmt.Println("folders:")
+				}
+				printTable([]string{"id", "title", "filesCount", "foldersCount"}, frows)
+			}
+			rows := fileEntryRows(pf.Files)
+			if outputFormat == "table" {
+				fmt.Println("files:")
+			}
+			printTable([]string{"id", "title", "fileExst", "contentLength", "updated"}, rows)
+			return nil
+		},
+	}
+	cmd.Flags().BoolVar(&showFolders, "folders", false, "also print project subfolders")
+	return cmd
+}
+
+func prjFilesUploadCmd() *cobra.Command {
+	return &cobra.Command{
+		Use:   "upload PROJECT_ID LOCAL_PATH [LOCAL_PATH...]",
+		Short: "Upload file(s) into the project's Documents folder",
+		Args:  cobra.MinimumNArgs(2),
+		RunE: func(cmd *cobra.Command, args []string) error {
+			c, err := newOO(cmd)
+			if err != nil {
+				return err
+			}
+			pid := args[0]
+			for _, p := range args[1:] {
+				entry, err := c.UploadProjectFile(cmd.Context(), pid, p)
+				if err != nil {
+					return err
+				}
+				printObject(fileEntryToMap(entry))
+			}
+			return nil
+		},
+	}
+}
+
+func prjFilesDownloadCmd() *cobra.Command {
+	var to string
+	cmd := &cobra.Command{
+		Use:   "download FILE_ID",
+		Short: "Download file bytes via viewUrl (default path: ./<title>)",
+		Args:  cobra.ExactArgs(1),
+		RunE: func(cmd *cobra.Command, args []string) error {
+			c, err := newOO(cmd)
+			if err != nil {
+				return err
+			}
+			f, err := c.GetFile(cmd.Context(), args[0])
+			if err != nil {
+				return err
+			}
+			path := to
+			if path == "" {
+				path = onlyoffice.SafeLocalFileName(onlyoffice.FileEntryTitle(f))
+			}
+			out, err := os.Create(path)
+			if err != nil {
+				return err
+			}
+			defer out.Close()
+			n, err := c.DownloadFile(cmd.Context(), args[0], out)
+			if err != nil {
+				_ = os.Remove(path)
+				return err
+			}
+			if outputFormat == "json" {
+				printObject(map[string]any{"path": path, "bytes": n})
+				return nil
+			}
+			fmt.Printf("downloaded: %s (%d bytes)\n", path, n)
+			return nil
+		},
+	}
+	cmd.Flags().StringVar(&to, "to", "", "output path (default: ./<server title>)")
+	return cmd
+}
+
+func prjFilesRenameCmd() *cobra.Command {
+	return &cobra.Command{
+		Use:   "rename FILE_ID NEW_TITLE",
+		Short: "Rename a file (include extension in NEW_TITLE)",
+		Args:  cobra.ExactArgs(2),
+		RunE: func(cmd *cobra.Command, args []string) error {
+			c, err := newOO(cmd)
+			if err != nil {
+				return err
+			}
+			entry, err := c.RenameFile(cmd.Context(), args[0], args[1])
+			if err != nil {
+				return err
+			}
+			printObject(fileEntryToMap(entry))
+			return nil
+		},
+	}
+}
+
+func prjFilesDeleteCmd() *cobra.Command {
+	return &cobra.Command{
+		Use:     "delete FILE_ID [FILE_ID...]",
+		Aliases: []string{"rm"},
+		Short:   "Permanently delete file(s) from Documents",
+		Args:    cobra.MinimumNArgs(1),
+		RunE: func(cmd *cobra.Command, args []string) error {
+			c, err := newOO(cmd)
+			if err != nil {
+				return err
+			}
+			ids := make([]int, 0, len(args))
+			for _, s := range args {
+				id, err := strconv.Atoi(s)
+				if err != nil {
+					return fmt.Errorf("file id %q: %w", s, err)
+				}
+				ids = append(ids, id)
+			}
+			if err := c.DeleteFiles(cmd.Context(), ids); err != nil {
+				return err
+			}
+			printObject(map[string]any{"deleted": ids})
+			return nil
+		},
+	}
+}
+
+func fileEntryRows(files []*onlyoffice.FileEntry) []map[string]any {
+	rows := make([]map[string]any, 0, len(files))
+	for _, f := range files {
+		if f == nil {
+			continue
+		}
+		rows = append(rows, fileEntryToMap(f))
+	}
+	return rows
+}
+
+func fileEntryToMap(f *onlyoffice.FileEntry) map[string]any {
+	m := map[string]any{
+		"id":            fileIDStr(f),
+		"title":         onlyoffice.FileEntryTitle(f),
+		"fileExst":      derefString(f.FileExst),
+		"contentLength": derefString(f.ContentLength),
+	}
+	if f.Updated != nil {
+		m["updated"] = f.Updated.Format(time.RFC3339)
+	}
+	return m
+}
+
+func fileIDStr(f *onlyoffice.FileEntry) string {
+	if f == nil || f.ID == nil {
+		return ""
+	}
+	return f.ID.String()
+}
+
+func folderIDStr(f *onlyoffice.FolderEntry) string {
+	if f == nil || f.ID == nil {
+		return ""
+	}
+	return f.ID.String()
+}

cmd/oo/tasks.go

@@ -0,0 +1,195 @@
+package main
+
+import (
+	"fmt"
+
+	"github.com/spf13/cobra"
+)
+
+var tasksCmd = &cobra.Command{
+	Use:     "tasks",
+	Aliases: []string{"task"},
+	Short:   "Project tasks and subtasks",
+}
+
+func init() {
+	rootCmd.AddCommand(tasksCmd)
+	tasksCmd.AddCommand(taskListCmd())
+	tasksCmd.AddCommand(taskGetCmd())
+	tasksCmd.AddCommand(taskCreateCmd())
+	tasksCmd.AddCommand(taskUpdateCmd())
+	tasksCmd.AddCommand(taskDeleteCmd())
+	tasksCmd.AddCommand(subtaskCmd())
+}
+
+func taskListCmd() *cobra.Command {
+	var project, status string
+	var all, verbose bool
+	cmd := &cobra.Command{
+		Use:   "list",
+		Short: "List project tasks",
+		RunE: func(cmd *cobra.Command, args []string) error {
+			c, err := newOO(cmd)
+			if err != nil {
+				return err
+			}
+			var tasks []map[string]any
+			if all {
+				tasks, err = c.ListAllTasks(cmd.Context(), status)
+			} else {
+				tasks, err = c.ListTasks(cmd.Context(), project, status)
+			}
+			if err != nil {
+				return err
+			}
+			if verbose {
+				for i, t := range tasks {
+					d, err := c.GetTaskByID(cmd.Context(), idString(t, "id"))
+					if err == nil {
+						tasks[i] = d
+					}
+				}
+			}
+			printTable([]string{"id", "title", "status", "priority", "responsible"}, tasks)
+			return nil
+		},
+	}
+	cmd.Flags().StringVarP(&project, "project", "p", "", "project id (default $OO_PROJECT_ID)")
+	cmd.Flags().StringVarP(&status, "status", "s", "", "open|closed")
+	cmd.Flags().BoolVarP(&all, "all", "a", false, "all projects (@self)")
+	cmd.Flags().BoolVarP(&verbose, "verbose", "v", false, "include subtasks & full details")
+	return cmd
+}
+
+func taskGetCmd() *cobra.Command {
+	return &cobra.Command{
+		Use:   "get TASK_ID",
+		Short: "Show a single task (incl. subtasks)",
+		Args:  cobra.ExactArgs(1),
+		RunE: func(cmd *cobra.Command, args []string) error {
+			c, err := newOO(cmd)
+			if err != nil {
+				return err
+			}
+			out, err := c.GetTaskByID(cmd.Context(), args[0])
+			if err != nil {
+				return err
+			}
+			printObject(out)
+			return nil
+		},
+	}
+}
+
+func taskCreateCmd() *cobra.Command {
+	var project, desc, deadline, prio string
+	cmd := &cobra.Command{
+		Use:     "create TITLE",
+		Aliases: []string{"add"},
+		Short:   "Create a project task",
+		Args:    cobra.ExactArgs(1),
+		RunE: func(cmd *cobra.Command, args []string) error {
+			c, err := newOO(cmd)
+			if err != nil {
+				return err
+			}
+			p := 0
+			switch prio {
+			case "high":
+				p = 1
+			case "low":
+				p = -1
+			}
+			out, err := c.AddTask(cmd.Context(), project, args[0], desc, p, deadline)
+			if err != nil {
+				return err
+			}
+			printObject(out)
+			return nil
+		},
+	}
+	cmd.Flags().StringVarP(&project, "project", "p", "", "project id (default $OO_PROJECT_ID)")
+	cmd.Flags().StringVar(&desc, "description", "", "description")
+	cmd.Flags().StringVar(&deadline, "deadline", "", "deadline YYYY-MM-DD")
+	cmd.Flags().StringVar(&prio, "priority", "normal", "high|normal|low")
+	return cmd
+}
+
+func taskUpdateCmd() *cobra.Command {
+	var status string
+	cmd := &cobra.Command{
+		Use:   "update TASK_ID",
+		Short: "Update task status",
+		Args:  cobra.ExactArgs(1),
+		RunE: func(cmd *cobra.Command, args []string) error {
+			if status == "" {
+				return fmt.Errorf("--status is required (open|closed)")
+			}
+			c, err := newOO(cmd)
+			if err != nil {
+				return err
+			}
+			out, err := c.UpdateTaskStatus(cmd.Context(), args[0], status)
+			if err != nil {
+				return err
+			}
+			printObject(out)
+			return nil
+		},
+	}
+	cmd.Flags().StringVarP(&status, "status", "s", "", "new status: open|closed")
+	return cmd
+}
+
+func taskDeleteCmd() *cobra.Command {
+	return &cobra.Command{
+		Use:     "delete TASK_ID [TASK_ID...]",
+		Aliases: []string{"rm"},
+		Short:   "Delete one or more tasks",
+		Args:    cobra.MinimumNArgs(1),
+		RunE: func(cmd *cobra.Command, args []string) error {
+			c, err := newOO(cmd)
+			if err != nil {
+				return err
+			}
+			for _, id := range args {
+				out, err := c.DeleteTask(cmd.Context(), id)
+				if err != nil {
+					return err
+				}
+				printObject(out)
+			}
+			return nil
+		},
+	}
+}
+
+// subtaskCmd exposes `oo tasks subtask {add}` — keeps things tidy without a
+// dedicated subtasks top-level command.
+func subtaskCmd() *cobra.Command {
+	sub := &cobra.Command{
+		Use:   "subtask",
+		Short: "Subtasks of a parent task",
+	}
+	sub.AddCommand(&cobra.Command{
+		Use:   "add PARENT_TASK_ID TITLE [TITLE...]",
+		Short: "Add one or more subtasks",
+		Args:  cobra.MinimumNArgs(2),
+		RunE: func(cmd *cobra.Command, args []string) error {
+			c, err := newOO(cmd)
+			if err != nil {
+				return err
+			}
+			parent := args[0]
+			for _, title := range args[1:] {
+				out, err := c.AddSubtask(cmd.Context(), parent, title)
+				if err != nil {
+					return err
+				}
+				printObject(out)
+			}
+			return nil
+		},
+	})
+	return sub
+}

cmd/oo/tasks_files.go

@@ -0,0 +1,91 @@
+package main
+
+import (
+	"fmt"
+	"strconv"
+
+	"github.com/spf13/cobra"
+)
+
+func init() {
+	tasksCmd.AddCommand(taskFilesCmd())
+}
+
+func taskFilesCmd() *cobra.Command {
+	cmd := &cobra.Command{
+		Use:   "files",
+		Short: "Task attachments: list, upload (project folder + attach), detach",
+	}
+	cmd.AddCommand(taskFilesListCmd())
+	cmd.AddCommand(taskFilesUploadCmd())
+	cmd.AddCommand(taskFilesDetachCmd())
+	return cmd
+}
+
+func taskFilesListCmd() *cobra.Command {
+	return &cobra.Command{
+		Use:   "list TASK_ID",
+		Short: "List files attached to a task",
+		Args:  cobra.ExactArgs(1),
+		RunE: func(cmd *cobra.Command, args []string) error {
+			c, err := newOO(cmd)
+			if err != nil {
+				return err
+			}
+			list, err := c.GetTaskFiles(cmd.Context(), args[0])
+			if err != nil {
+				return err
+			}
+			printTable([]string{"id", "title", "fileExst", "contentLength", "updated"}, fileEntryRows(list))
+			return nil
+		},
+	}
+}
+
+func taskFilesUploadCmd() *cobra.Command {
+	return &cobra.Command{
+		Use:   "upload TASK_ID LOCAL_PATH [LOCAL_PATH...]",
+		Short: "Upload into the task's project folder and attach each file to the task",
+		Args:  cobra.MinimumNArgs(2),
+		RunE: func(cmd *cobra.Command, args []string) error {
+			c, err := newOO(cmd)
+			if err != nil {
+				return err
+			}
+			tid := args[0]
+			for _, p := range args[1:] {
+				entry, err := c.UploadTaskFile(cmd.Context(), tid, p)
+				if err != nil {
+					return err
+				}
+				printObject(fileEntryToMap(entry))
+			}
+			return nil
+		},
+	}
+}
+
+func taskFilesDetachCmd() *cobra.Command {
+	return &cobra.Command{
+		Use:   "detach TASK_ID FILE_ID [FILE_ID...]",
+		Short: "Detach file(s) from the task (files remain in Documents)",
+		Args:  cobra.MinimumNArgs(2),
+		RunE: func(cmd *cobra.Command, args []string) error {
+			c, err := newOO(cmd)
+			if err != nil {
+				return err
+			}
+			tid := args[0]
+			for _, fid := range args[1:] {
+				if _, err := strconv.Atoi(fid); err != nil {
+					return fmt.Errorf("file id %q: %w", fid, err)
+				}
+				if err := c.DetachTaskFile(cmd.Context(), tid, fid); err != nil {
+					return err
+				}
+				printObject(map[string]any{"taskId": tid, "detachedFileId": fid})
+			}
+			return nil
+		},
+	}
+}

cmd/oo/users.go

@@ -0,0 +1,93 @@
+package main
+
+import (
+	"github.com/spf13/cobra"
+)
+
+var usersCmd = &cobra.Command{
+	Use:   "users",
+	Short: "Portal / workspace users",
+}
+
+func init() {
+	rootCmd.AddCommand(usersCmd)
+	usersCmd.AddCommand(usersListCmd())
+	usersCmd.AddCommand(usersSelfCmd())
+	rootCmd.AddCommand(whoamiCmd())
+}
+
+func usersListCmd() *cobra.Command {
+	return &cobra.Command{
+		Use:   "list",
+		Short: "List portal users",
+		RunE: func(cmd *cobra.Command, args []string) error {
+			c, err := newOO(cmd)
+			if err != nil {
+				return err
+			}
+			users, err := c.GetUsers()
+			if err != nil {
+				return err
+			}
+			rows := make([]map[string]any, 0, len(users))
+			for _, u := range users {
+				rows = append(rows, map[string]any{
+					"id":          derefString(u.ID),
+					"userName":    derefString(u.UserName),
+					"displayName": derefString(u.DisplayName),
+					"email":       derefString(u.Email),
+					"isAdmin":     derefBool(u.IsAdmin),
+					"status":      derefInt(u.Status),
+				})
+			}
+			printTable([]string{"id", "userName", "displayName", "email", "isAdmin", "status"}, rows)
+			return nil
+		},
+	}
+}
+
+func usersSelfCmd() *cobra.Command {
+	return &cobra.Command{
+		Use:   "self",
+		Short: "Show current user id (people/@self)",
+		RunE: func(cmd *cobra.Command, args []string) error {
+			c, err := newOO(cmd)
+			if err != nil {
+				return err
+			}
+			id, err := c.SelfUserID(cmd.Context())
+			if err != nil {
+				return err
+			}
+			printObject(map[string]any{"id": id})
+			return nil
+		},
+	}
+}
+
+// whoamiCmd is a convenience shortcut at the root level.
+func whoamiCmd() *cobra.Command {
+	return &cobra.Command{
+		Use:   "whoami",
+		Short: "Alias for `oo users self`",
+		RunE: func(cmd *cobra.Command, args []string) error {
+			c, err := newOO(cmd)
+			if err != nil {
+				return err
+			}
+			id, err := c.SelfUserID(cmd.Context())
+			if err != nil {
+				return err
+			}
+			printObject(map[string]any{"id": id})
+			return nil
+		},
+	}
+}
+
+func derefBool(p *bool) bool {
+	if p == nil {
+		return false
+	}
+	return *p
+}

cmd/oo/version.go

@@ -0,0 +1,8 @@
+package main
+
+// Build metadata injected at release time via -ldflags (GoReleaser).
+var (
+	version = "dev"
+	commit  = "none"
+	date    = "unknown"
+)

crm.go

@@ -0,0 +1,580 @@
+package onlyoffice
+
+// Minimal CRM helpers: contacts, opportunities, cases, tasks, and history notes.
+// These expose untyped maps for flexibility — they are primarily consumed by
+// cmd/oo and the applications-sync workflow.
+
+import (
+	"context"
+	"encoding/json"
+	"fmt"
+	"net/url"
+	"strconv"
+	"strings"
+)
+
+// ListContacts returns a page of CRM contacts and the total count.
+func (c *Client) ListContacts(ctx context.Context, count, startIndex int, search string) ([]map[string]any, int, error) {
+	q := url.Values{}
+	q.Set("count", strconv.Itoa(count))
+	q.Set("startIndex", strconv.Itoa(startIndex))
+	if search != "" {
+		q.Set("filterValue", search)
+	}
+	raw, err := c.getJSON(ctx, "/api/2.0/crm/contact/filter.json?"+q.Encode())
+	if err != nil {
+		return nil, 0, err
+	}
+	var env struct {
+		Response []map[string]any `json:"response"`
+		Total    int              `json:"total"`
+	}
+	if err := json.Unmarshal(raw, &env); err != nil {
+		return nil, 0, err
+	}
+	total := env.Total
+	if total == 0 && len(env.Response) > 0 {
+		total = len(env.Response)
+	}
+	return env.Response, total, nil
+}
+
+// GetContact returns a single contact by id.
+func (c *Client) GetContact(ctx context.Context, contactID string) (map[string]any, error) {
+	return c.ResponseObject(ctx, fmt.Sprintf("/api/2.0/crm/contact/%s.json", url.PathEscape(contactID)))
+}
+
+// FindCompany searches for a company contact with an exact (case-insensitive)
+// displayName match. Returns nil when not found.
+func (c *Client) FindCompany(ctx context.Context, name string) (map[string]any, error) {
+	needle := CompanyGroupingKey(name)
+	const page = 50
+	for start := 0; ; start += page {
+		items, total, err := c.ListContacts(ctx, page, start, name)
+		if err != nil {
+			return nil, err
+		}
+		for _, co := range items {
+			if !isCompany(co) {
+				continue
+			}
+			if CompanyGroupingKey(fmt.Sprint(co["displayName"])) == needle {
+				return co, nil
+			}
+		}
+		if start+page >= total || len(items) == 0 {
+			break
+		}
+	}
+	return nil, nil
+}
+
+// FindPerson searches for a person by first+last (case-insensitive).
+func (c *Client) FindPerson(ctx context.Context, first, last string) (map[string]any, error) {
+	firstNeedle := strings.ToLower(strings.TrimSpace(first))
+	lastNeedle := strings.ToLower(strings.TrimSpace(last))
+	const page = 50
+	for start := 0; ; start += page {
+		items, total, err := c.ListContacts(ctx, page, start, first+" "+last)
+		if err != nil {
+			return nil, err
+		}
+		for _, p := range items {
+			if isCompany(p) {
+				continue
+			}
+			if strings.ToLower(fmt.Sprint(p["firstName"])) == firstNeedle &&
+				strings.ToLower(fmt.Sprint(p["lastName"])) == lastNeedle {
+				return p, nil
+			}
+		}
+		if start+page >= total || len(items) == 0 {
+			break
+		}
+	}
+	return nil, nil
+}
+
+func isCompany(m map[string]any) bool {
+	v, ok := m["isCompany"].(bool)
+	return ok && v
+}
+
+// CreateCompany creates a company contact with the given name.
+func (c *Client) CreateCompany(ctx context.Context, name string) (map[string]any, error) {
+	fields := url.Values{}
+	fields.Set("companyName", name)
+	return c.postFormObject(ctx, "/api/2.0/crm/contact/company.json", fields)
+}
+
+// CreatePerson creates a person contact; companyID == 0 means unlinked.
+func (c *Client) CreatePerson(ctx context.Context, first, last string, companyID int, jobTitle, about string) (map[string]any, error) {
+	fields := url.Values{}
+	fields.Set("firstName", first)
+	fields.Set("lastName", last)
+	if companyID != 0 {
+		fields.Set("companyId", strconv.Itoa(companyID))
+	}
+	if jobTitle != "" {
+		fields.Set("jobTitle", jobTitle)
+	}
+	if about != "" {
+		fields.Set("about", about)
+	}
+	return c.postFormObject(ctx, "/api/2.0/crm/contact/person.json", fields)
+}
+
+// AddContactInfo attaches an email/website/phone/etc. to a contact.
+func (c *Client) AddContactInfo(ctx context.Context, contactID, infoType, dataValue, category string, isPrimary bool) (map[string]any, error) {
+	if category == "" {
+		category = "Work"
+	}
+	fields := url.Values{}
+	fields.Set("infoType", infoType)
+	fields.Set("data", dataValue)
+	fields.Set("category", category)
+	fields.Set("isPrimary", strconv.FormatBool(isPrimary))
+	return c.postFormObject(ctx, fmt.Sprintf("/api/2.0/crm/contact/%s/data.json", url.PathEscape(contactID)), fields)
+}
+
+// DeleteContact removes a CRM contact by id.
+func (c *Client) DeleteContact(ctx context.Context, contactID string) (map[string]any, error) {
+	return c.deleteObject(ctx, fmt.Sprintf("/api/2.0/crm/contact/%s.json", url.PathEscape(contactID)))
+}
+
+// ListAllContacts paginates through every CRM contact.
+func (c *Client) ListAllContacts(ctx context.Context) ([]map[string]any, error) {
+	const page = 100
+	var all []map[string]any
+	for start := 0; ; start += page {
+		chunk, total, err := c.ListContacts(ctx, page, start, "")
+		if err != nil {
+			return nil, err
+		}
+		all = append(all, chunk...)
+		if start+page >= total || len(chunk) == 0 {
+			break
+		}
+	}
+	return all, nil
+}
+
+// MergeContacts merges secondary into primary (secondary is removed).
+func (c *Client) MergeContacts(ctx context.Context, primaryID, secondaryID string) (map[string]any, error) {
+	fields := url.Values{}
+	fields.Set("fromContactId", secondaryID)
+	fields.Set("toContactId", primaryID)
+	out, err := c.putFormObject(ctx, "/api/2.0/crm/contact/merge.json", fields)
+	if err == nil {
+		return out, nil
+	}
+	// Some instances expect JSON body with alternate field names.
+	body := map[string]any{
+		"fromContactId": secondaryID,
+		"toContactId":   primaryID,
+	}
+	return c.putJSONObject(ctx, "/api/2.0/crm/contact/merge.json", body)
+}
+
+// ListCompanyPersons returns persons linked to a company.
+func (c *Client) ListCompanyPersons(ctx context.Context, companyID string) ([]map[string]any, error) {
+	return c.ResponseArray(ctx, fmt.Sprintf("/api/2.0/crm/contact/company/%s/person.json", url.PathEscape(companyID)))
+}
+
+// DeleteContactInfo removes one info row from a contact.
+func (c *Client) DeleteContactInfo(ctx context.Context, contactID, dataID string) (map[string]any, error) {
+	return c.deleteObject(ctx, fmt.Sprintf("/api/2.0/crm/contact/%s/data/%s.json", url.PathEscape(contactID), url.PathEscape(dataID)))
+}
+
+// ContactInfoRows returns commonData/info rows from a contact map.
+func ContactInfoRows(contact map[string]any) []map[string]any {
+	for _, key := range []string{"commonData", "data", "contactData"} {
+		if rows, ok := contact[key].([]any); ok {
+			return mapsFromAnySlice(rows)
+		}
+		if rows, ok := contact[key].([]map[string]any); ok {
+			return rows
+		}
+	}
+	return nil
+}
+
+// HasContactInfo reports whether a contact already has the given type+value.
+func HasContactInfo(contact map[string]any, infoType, value string) bool {
+	key := ContactInfoKey(infoType, value)
+	for _, row := range ContactInfoRows(contact) {
+		v := fmt.Sprint(row["data"])
+		if v == "" || v == "<nil>" {
+			v = fmt.Sprint(row["value"])
+		}
+		if ContactInfoKey(fmt.Sprint(row["infoType"]), v) == key {
+			return true
+		}
+	}
+	return false
+}
+
+func mapsFromAnySlice(rows []any) []map[string]any {
+	out := make([]map[string]any, 0, len(rows))
+	for _, row := range rows {
+		if m, ok := row.(map[string]any); ok {
+			out = append(out, m)
+		}
+	}
+	return out
+}
+
+// ListOpportunities returns a page of deals/opportunities and the total count.
+func (c *Client) ListOpportunities(ctx context.Context, count, startIndex int) ([]map[string]any, int, error) {
+	q := url.Values{}
+	q.Set("count", strconv.Itoa(count))
+	q.Set("startIndex", strconv.Itoa(startIndex))
+	raw, err := c.getJSON(ctx, "/api/2.0/crm/opportunity/filter.json?"+q.Encode())
+	if err != nil {
+		return nil, 0, err
+	}
+	var env struct {
+		Response []map[string]any `json:"response"`
+		Total    int              `json:"total"`
+	}
+	if err := json.Unmarshal(raw, &env); err != nil {
+		return nil, 0, err
+	}
+	return env.Response, env.Total, nil
+}
+
+// GetOpportunity returns a single opportunity (deal) by id.
+func (c *Client) GetOpportunity(ctx context.Context, id string) (map[string]any, error) {
+	return c.ResponseObject(ctx, fmt.Sprintf("/api/2.0/crm/opportunity/%s.json", url.PathEscape(id)))
+}
+
+// CreateOpportunity creates a new deal. An empty responsibleID falls back to
+// the authenticated user's id, and bidCurrency defaults to "EUR".
+func (c *Client) CreateOpportunity(ctx context.Context, title string, stageID int, responsibleID, bidCurrency, description string, bidValue float64) (map[string]any, error) {
+	if responsibleID == "" {
+		s, err := c.SelfUserID(ctx)
+		if err != nil {
+			return nil, err
+		}
+		responsibleID = s
+	}
+	if bidCurrency == "" {
+		bidCurrency = "EUR"
+	}
+	fields := url.Values{}
+	fields.Set("title", title)
+	fields.Set("stageId", strconv.Itoa(stageID))
+	fields.Set("responsibleId", responsibleID)
+	fields.Set("bidCurrencyAbbr", bidCurrency)
+	if bidValue != 0 {
+		fields.Set("bidValue", strconv.FormatFloat(bidValue, 'g', -1, 64))
+	}
+	if description != "" {
+		fields.Set("description", description)
+	}
+	return c.postFormObject(ctx, "/api/2.0/crm/opportunity.json", fields)
+}
+
+// AddOpportunityMember links a contact to an opportunity.
+func (c *Client) AddOpportunityMember(ctx context.Context, oppID, contactID string) (map[string]any, error) {
+	return c.postFormObject(ctx,
+		fmt.Sprintf("/api/2.0/crm/opportunity/%s/contact/%s.json", url.PathEscape(oppID), url.PathEscape(contactID)),
+		url.Values{})
+}
+
+// ListDealStages returns the configured opportunity stages.
+func (c *Client) ListDealStages(ctx context.Context) ([]map[string]any, error) {
+	return c.ResponseArray(ctx, "/api/2.0/crm/opportunity/stage.json")
+}
+
+// DeleteOpportunity removes a deal by id.
+func (c *Client) DeleteOpportunity(ctx context.Context, id string) (map[string]any, error) {
+	return c.deleteObject(ctx, fmt.Sprintf("/api/2.0/crm/opportunity/%s.json", url.PathEscape(id)))
+}
+
+// ListAllOpportunities paginates through every opportunity.
+func (c *Client) ListAllOpportunities(ctx context.Context) ([]map[string]any, error) {
+	const page = 100
+	var all []map[string]any
+	for start := 0; ; start += page {
+		chunk, total, err := c.ListOpportunities(ctx, page, start)
+		if err != nil {
+			return nil, err
+		}
+		all = append(all, chunk...)
+		if start+page >= total || len(chunk) == 0 {
+			break
+		}
+	}
+	return all, nil
+}
+
+// OpportunityMembers extracts the members slice from a GetOpportunity response.
+func OpportunityMembers(opp map[string]any) []map[string]any {
+	raw, ok := opp["members"].([]any)
+	if !ok {
+		if rows, ok := opp["members"].([]map[string]any); ok {
+			return rows
+		}
+		return nil
+	}
+	return mapsFromAnySlice(raw)
+}
+
+// ListOpportunityMembers returns contacts linked to an opportunity.
+func (c *Client) ListOpportunityMembers(ctx context.Context, oppID string) ([]map[string]any, error) {
+	opp, err := c.GetOpportunity(ctx, oppID)
+	if err != nil {
+		return nil, err
+	}
+	if members := OpportunityMembers(opp); len(members) > 0 {
+		return members, nil
+	}
+	return c.ResponseArray(ctx, fmt.Sprintf("/api/2.0/crm/opportunity/%s/contact.json", url.PathEscape(oppID)))
+}
+
+// RemoveOpportunityMember detaches a contact from an opportunity.
+func (c *Client) RemoveOpportunityMember(ctx context.Context, oppID, contactID string) (map[string]any, error) {
+	return c.deleteObject(ctx, fmt.Sprintf("/api/2.0/crm/opportunity/%s/contact/%s.json", url.PathEscape(oppID), url.PathEscape(contactID)))
+}
+
+// IsOpportunityMember reports whether contactID is already on the opportunity.
+func (c *Client) IsOpportunityMember(ctx context.Context, oppID, contactID string) (bool, error) {
+	members, err := c.ListOpportunityMembers(ctx, oppID)
+	if err != nil {
+		return false, err
+	}
+	want := flexInt(contactID)
+	for _, m := range members {
+		if flexInt(m["id"]) == want {
+			return true, nil
+		}
+	}
+	return false, nil
+}
+
+// UpdateOpportunityTitle renames a deal; loads full record and PUTs it back.
+func (c *Client) UpdateOpportunityTitle(ctx context.Context, id, newTitle string) (map[string]any, error) {
+	opp, err := c.GetOpportunity(ctx, id)
+	if err != nil {
+		return nil, err
+	}
+	body := opportunityUpdateBody(opp, newTitle)
+	return c.putJSONObject(ctx, fmt.Sprintf("/api/2.0/crm/opportunity/%s.json", url.PathEscape(id)), body)
+}
+
+func opportunityUpdateBody(opp map[string]any, title string) map[string]any {
+	body := map[string]any{
+		"opportunityid": flexInt(opp["id"]),
+		"title":         title,
+		"description":   stringField(opp, "description"),
+		"isPrivate":     boolField(opp, "isPrivate"),
+		"isNotify":      false,
+	}
+	if stage, ok := opp["stage"].(map[string]any); ok {
+		body["stageid"] = flexInt(stage["id"])
+	}
+	if resp, ok := opp["responsible"].(map[string]any); ok {
+		body["responsibleid"] = fmt.Sprint(resp["id"])
+	}
+	if cur, ok := opp["bidCurrency"].(map[string]any); ok {
+		body["bidCurrencyAbbr"] = stringField(cur, "abbreviation")
+	} else {
+		body["bidCurrencyAbbr"] = "EUR"
+	}
+	body["bidValue"] = floatField(opp, "bidValue")
+	body["bidType"] = 0
+	body["perPeriodValue"] = 0
+	body["successProbability"] = 1
+	var memberIDs []int64
+	seen := make(map[int64]bool)
+	for _, m := range OpportunityMembers(opp) {
+		id := flexInt(m["id"])
+		if id == 0 || seen[id] {
+			continue
+		}
+		seen[id] = true
+		memberIDs = append(memberIDs, id)
+	}
+	if len(memberIDs) > 0 {
+		body["members"] = memberIDs
+		body["contactid"] = memberIDs[0]
+	}
+	if al, ok := opp["accessList"].([]any); ok && len(al) > 0 {
+		body["accessList"] = al
+	} else {
+		body["accessList"] = []any{}
+	}
+	return body
+}
+
+func stringField(m map[string]any, key string) string {
+	v := fmt.Sprint(m[key])
+	if v == "<nil>" {
+		return ""
+	}
+	return v
+}
+
+func boolField(m map[string]any, key string) bool {
+	v, _ := m[key].(bool)
+	return v
+}
+
+func floatField(m map[string]any, key string) float64 {
+	switch x := m[key].(type) {
+	case float64:
+		return x
+	case int:
+		return float64(x)
+	default:
+		f, _ := strconv.ParseFloat(fmt.Sprint(x), 64)
+		return f
+	}
+}
+
+// ListCases returns a page of CRM cases and the total count.
+func (c *Client) ListCases(ctx context.Context, count, startIndex int) ([]map[string]any, int, error) {
+	q := url.Values{}
+	q.Set("count", strconv.Itoa(count))
+	q.Set("startIndex", strconv.Itoa(startIndex))
+	raw, err := c.getJSON(ctx, "/api/2.0/crm/case/filter.json?"+q.Encode())
+	if err != nil {
+		return nil, 0, err
+	}
+	var env struct {
+		Response []map[string]any `json:"response"`
+		Total    int              `json:"total"`
+	}
+	if err := json.Unmarshal(raw, &env); err != nil {
+		return nil, 0, err
+	}
+	return env.Response, env.Total, nil
+}
+
+// CreateCase creates a new CRM case.
+func (c *Client) CreateCase(ctx context.Context, title string) (map[string]any, error) {
+	fields := url.Values{}
+	fields.Set("title", title)
+	return c.postFormObject(ctx, "/api/2.0/crm/case.json", fields)
+}
+
+// AddCaseMember links a contact to a CRM case.
+func (c *Client) AddCaseMember(ctx context.Context, caseID, contactID string) (map[string]any, error) {
+	return c.postFormObject(ctx,
+		fmt.Sprintf("/api/2.0/crm/case/%s/contact/%s.json", url.PathEscape(caseID), url.PathEscape(contactID)),
+		url.Values{})
+}
+
+// DeleteCase removes a case by id.
+func (c *Client) DeleteCase(ctx context.Context, id string) (map[string]any, error) {
+	return c.deleteObject(ctx, fmt.Sprintf("/api/2.0/crm/case/%s.json", url.PathEscape(id)))
+}
+
+// ListCRMTasks returns a page of CRM tasks (separate from Project tasks).
+func (c *Client) ListCRMTasks(ctx context.Context, count, startIndex int) ([]map[string]any, int, error) {
+	q := url.Values{}
+	q.Set("count", strconv.Itoa(count))
+	q.Set("startIndex", strconv.Itoa(startIndex))
+	raw, err := c.getJSON(ctx, "/api/2.0/crm/task/filter.json?"+q.Encode())
+	if err != nil {
+		return nil, 0, err
+	}
+	var env struct {
+		Response []map[string]any `json:"response"`
+		Total    int              `json:"total"`
+	}
+	if err := json.Unmarshal(raw, &env); err != nil {
+		return nil, 0, err
+	}
+	return env.Response, env.Total, nil
+}
+
+// CreateCRMTask creates a CRM task (reminder) attached to an entity.
+func (c *Client) CreateCRMTask(ctx context.Context, title, deadline string, categoryID, contactID int, entityType string, entityID int, description string) (map[string]any, error) {
+	fields := url.Values{}
+	fields.Set("title", title)
+	fields.Set("deadline", deadline)
+	fields.Set("categoryId", strconv.Itoa(categoryID))
+	if contactID != 0 {
+		fields.Set("contactId", strconv.Itoa(contactID))
+	}
+	if entityType != "" {
+		fields.Set("entityType", entityType)
+	}
+	if entityID != 0 {
+		fields.Set("entityId", strconv.Itoa(entityID))
+	}
+	if description != "" {
+		fields.Set("description", description)
+	}
+	return c.postFormObject(ctx, "/api/2.0/crm/task.json", fields)
+}
+
+// DeleteCRMTask removes a CRM task by id.
+func (c *Client) DeleteCRMTask(ctx context.Context, id string) (map[string]any, error) {
+	return c.deleteObject(ctx, fmt.Sprintf("/api/2.0/crm/task/%s.json", url.PathEscape(id)))
+}
+
+// ListTaskCategories returns CRM task categories.
+func (c *Client) ListTaskCategories(ctx context.Context) ([]map[string]any, error) {
+	return c.ResponseArray(ctx, "/api/2.0/crm/task/category.json")
+}
+
+// AddHistoryNote attaches a history note to a CRM entity. When categoryID is 0,
+// the cached "note" category id is looked up from /api/2.0/crm/history/category.json.
+func (c *Client) AddHistoryNote(ctx context.Context, entityType string, entityID int, content string, categoryID int) (map[string]any, error) {
+	if categoryID == 0 {
+		id, err := c.historyNoteCategoryID(ctx)
+		if err != nil {
+			return nil, err
+		}
+		categoryID = id
+	}
+	fields := url.Values{}
+	fields.Set("entityType", entityType)
+	fields.Set("entityId", strconv.Itoa(entityID))
+	fields.Set("content", content)
+	fields.Set("categoryId", strconv.Itoa(categoryID))
+	return c.postFormObject(ctx, "/api/2.0/crm/history.json", fields)
+}
+
+func (c *Client) historyNoteCategoryID(ctx context.Context) (int, error) {
+	if c.noteCatID != 0 {
+		return c.noteCatID, nil
+	}
+	list, err := c.ResponseArray(ctx, "/api/2.0/crm/history/category.json")
+	if err != nil {
+		return 0, err
+	}
+	for _, row := range list {
+		if strings.EqualFold(fmt.Sprint(row["title"]), "note") {
+			c.noteCatID = int(flexInt(row["id"]))
+			return c.noteCatID, nil
+		}
+	}
+	if len(list) > 0 {
+		c.noteCatID = int(flexInt(list[0]["id"]))
+		return c.noteCatID, nil
+	}
+	return 0, nil
+}
+
+// flexInt coerces OnlyOffice numeric fields that JSON unmarshal may surface as
+// float64, int, json.Number, or string into a plain int64.
+func flexInt(v any) int64 {
+	switch x := v.(type) {
+	case float64:
+		return int64(x)
+	case int:
+		return int64(x)
+	case int64:
+		return x
+	case json.Number:
+		n, _ := x.Int64()
+		return n
+	default:
+		n, _ := strconv.ParseInt(fmt.Sprint(x), 10, 64)
+		return n
+	}
+}

crm_dedupe.go

@@ -0,0 +1,272 @@
+package onlyoffice
+
+import (
+	"context"
+	"fmt"
+	"strconv"
+)
+
+// DedupeResult summarizes a cleanup pass.
+type DedupeResult struct {
+	Groups  int      `json:"groups"`
+	Merged  int      `json:"merged"`
+	Deleted int      `json:"deleted"`
+	Renamed int      `json:"renamed"`
+	Removed int      `json:"removed"`
+	Errors  []string `json:"errors,omitempty"`
+}
+
+func (r *DedupeResult) addErr(err error) {
+	if err != nil {
+		r.Errors = append(r.Errors, err.Error())
+	}
+}
+
+type crmDedupeClient interface {
+	ListAllContacts(ctx context.Context) ([]map[string]any, error)
+	ListAllOpportunities(ctx context.Context) ([]map[string]any, error)
+	GetContact(ctx context.Context, contactID string) (map[string]any, error)
+	GetOpportunity(ctx context.Context, id string) (map[string]any, error)
+	MergeContacts(ctx context.Context, primaryID, secondaryID string) (map[string]any, error)
+	DeleteOpportunity(ctx context.Context, id string) (map[string]any, error)
+	DeleteContactInfo(ctx context.Context, contactID, dataID string) (map[string]any, error)
+	ListCompanyPersons(ctx context.Context, companyID string) ([]map[string]any, error)
+	AddOpportunityMember(ctx context.Context, oppID, contactID string) (map[string]any, error)
+	RemoveOpportunityMember(ctx context.Context, oppID, contactID string) (map[string]any, error)
+	UpdateOpportunityTitle(ctx context.Context, id, newTitle string) (map[string]any, error)
+}
+
+func executeMergePlans(ctx context.Context, client crmDedupeClient, plans []MergePlan, res *DedupeResult) {
+	for _, plan := range plans {
+		res.Groups++
+		for _, sec := range plan.Secondary {
+			_, err := client.MergeContacts(ctx, strconv.FormatInt(plan.Primary, 10), strconv.FormatInt(sec, 10))
+			if err != nil {
+				res.addErr(fmt.Errorf("merge %d into %d: %w", sec, plan.Primary, err))
+				continue
+			}
+			res.Merged++
+		}
+	}
+}
+
+// DedupeCompanies merges duplicate company contacts by normalized name.
+func DedupeCompanies(ctx context.Context, client crmDedupeClient) (DedupeResult, error) {
+	var res DedupeResult
+	items, err := client.ListAllContacts(ctx)
+	if err != nil {
+		return res, err
+	}
+	plans := BuildMergePlans(GroupCompaniesByName(items))
+	executeMergePlans(ctx, client, plans, &res)
+	return res, nil
+}
+
+// DedupePersons merges duplicate person contacts by normalized first+last.
+func DedupePersons(ctx context.Context, client crmDedupeClient) (DedupeResult, error) {
+	var res DedupeResult
+	items, err := client.ListAllContacts(ctx)
+	if err != nil {
+		return res, err
+	}
+	plans := BuildMergePlans(GroupPersonsByKey(items))
+	executeMergePlans(ctx, client, plans, &res)
+	return res, nil
+}
+
+// DedupeCompanyPersons merges same-name persons within each company.
+func DedupeCompanyPersons(ctx context.Context, client crmDedupeClient) (DedupeResult, error) {
+	var res DedupeResult
+	items, err := client.ListAllContacts(ctx)
+	if err != nil {
+		return res, err
+	}
+	grouped := GroupCompanyPersons(items)
+	for companyID, byName := range grouped {
+		plans := BuildMergePlans(byName)
+		if len(plans) == 0 {
+			continue
+		}
+		_ = companyID
+		executeMergePlans(ctx, client, plans, &res)
+	}
+	return res, nil
+}
+
+// DedupeContactInfo removes duplicate email/phone/etc rows on all contacts.
+func DedupeContactInfo(ctx context.Context, client crmDedupeClient) (DedupeResult, error) {
+	var res DedupeResult
+	items, err := client.ListAllContacts(ctx)
+	if err != nil {
+		return res, err
+	}
+	for _, row := range items {
+		cid := strconv.FormatInt(rowID(row), 10)
+		contact, err := client.GetContact(ctx, cid)
+		if err != nil {
+			res.addErr(err)
+			continue
+		}
+		rows := ContactInfoRows(contact)
+		for _, dataID := range GroupContactInfoRows(rows) {
+			_, err := client.DeleteContactInfo(ctx, cid, strconv.FormatInt(dataID, 10))
+			if err != nil {
+				res.addErr(err)
+				continue
+			}
+			res.Removed++
+		}
+	}
+	return res, nil
+}
+
+// DedupeOpportunities merges duplicate deals by title; relinks members first.
+func DedupeOpportunities(ctx context.Context, client crmDedupeClient, ignoreCompanySuffix bool) (DedupeResult, error) {
+	var res DedupeResult
+	items, err := client.ListAllOpportunities(ctx)
+	if err != nil {
+		return res, err
+	}
+	groups := GroupOpportunitiesByTitle(items, ignoreCompanySuffix)
+	for _, rows := range groups {
+		if len(rows) < 2 {
+			continue
+		}
+		res.Groups++
+		ids := make([]int64, len(rows))
+		for i, row := range rows {
+			ids[i] = rowID(row)
+		}
+		primary := PickCanonicalID(ids)
+		primaryID := strconv.FormatInt(primary, 10)
+		for _, row := range rows {
+			sec := rowID(row)
+			if sec == primary {
+				continue
+			}
+			secID := strconv.FormatInt(sec, 10)
+			opp, err := client.GetOpportunity(ctx, secID)
+			if err != nil {
+				res.addErr(err)
+				continue
+			}
+			for _, m := range OpportunityMembers(opp) {
+				mid := strconv.FormatInt(rowID(m), 10)
+				_, _ = client.AddOpportunityMember(ctx, primaryID, mid)
+			}
+			if _, err := client.DeleteOpportunity(ctx, secID); err != nil {
+				res.addErr(err)
+				continue
+			}
+			res.Deleted++
+		}
+	}
+	return res, nil
+}
+
+// DedupeOpportunityMembers removes duplicate members on each deal (by id and displayName).
+func DedupeOpportunityMembers(ctx context.Context, client crmDedupeClient) (DedupeResult, error) {
+	var res DedupeResult
+	items, err := client.ListAllOpportunities(ctx)
+	if err != nil {
+		return res, err
+	}
+	for _, row := range items {
+		oppID := strconv.FormatInt(rowID(row), 10)
+		opp, err := client.GetOpportunity(ctx, oppID)
+		if err != nil {
+			res.addErr(err)
+			continue
+		}
+		members := OpportunityMembers(opp)
+		if len(members) == 0 {
+			continue
+		}
+		var ids []int64
+		for _, m := range members {
+			ids = append(ids, rowID(m))
+		}
+		remove := append(DedupeMemberIDs(ids), DedupeMembersByDisplayName(members)...)
+		seen := make(map[int64]bool)
+		for _, contactID := range remove {
+			if contactID == 0 || seen[contactID] {
+				continue
+			}
+			seen[contactID] = true
+			if _, err := client.RemoveOpportunityMember(ctx, oppID, strconv.FormatInt(contactID, 10)); err != nil {
+				res.addErr(err)
+				continue
+			}
+			res.Removed++
+		}
+	}
+	return res, nil
+}
+
+// FixOpportunityTitles renames deals with malformed titles.
+func FixOpportunityTitles(ctx context.Context, client crmDedupeClient) (DedupeResult, error) {
+	var res DedupeResult
+	items, err := client.ListAllOpportunities(ctx)
+	if err != nil {
+		return res, err
+	}
+	for _, row := range items {
+		old := fmt.Sprint(row["title"])
+		newTitle := FixDealTitle(old)
+		if newTitle == old || newTitle == "" {
+			continue
+		}
+		oppID := strconv.FormatInt(rowID(row), 10)
+		if _, err := client.UpdateOpportunityTitle(ctx, oppID, newTitle); err != nil {
+			res.addErr(err)
+			continue
+		}
+		res.Renamed++
+	}
+	return res, nil
+}
+
+// CleanupCRM runs all dedupe passes in dependency order.
+func CleanupCRM(ctx context.Context, client crmDedupeClient, ignoreCompanySuffix bool) (map[string]DedupeResult, error) {
+	out := make(map[string]DedupeResult)
+	steps := []struct {
+		name string
+		fn   func(context.Context, crmDedupeClient) (DedupeResult, error)
+	}{
+		{"companies", func(ctx context.Context, c crmDedupeClient) (DedupeResult, error) {
+			return DedupeCompanies(ctx, c)
+		}},
+		{"persons", func(ctx context.Context, c crmDedupeClient) (DedupeResult, error) {
+			return DedupePersons(ctx, c)
+		}},
+		{"company-persons", func(ctx context.Context, c crmDedupeClient) (DedupeResult, error) {
+			return DedupeCompanyPersons(ctx, c)
+		}},
+		{"contact-info", func(ctx context.Context, c crmDedupeClient) (DedupeResult, error) {
+			return DedupeContactInfo(ctx, c)
+		}},
+		{"opportunity-members", func(ctx context.Context, c crmDedupeClient) (DedupeResult, error) {
+			return DedupeOpportunityMembers(ctx, c)
+		}},
+	}
+	for _, step := range steps {
+		r, err := step.fn(ctx, client)
+		out[step.name] = r
+		if err != nil {
+			return out, err
+		}
+	}
+	r, err := DedupeOpportunities(ctx, client, ignoreCompanySuffix)
+	out["opportunities"] = r
+	if err != nil {
+		return out, err
+	}
+	r, err = FixOpportunityTitles(ctx, client)
+	out["fix-titles"] = r
+	if err != nil {
+		return out, err
+	}
+	return out, nil
+}
+
+var _ crmDedupeClient = (*Client)(nil)

crm_dedupe_plan.go

@@ -0,0 +1,243 @@
+package onlyoffice
+
+import (
+	"fmt"
+	"sort"
+	"strings"
+)
+
+// PickCanonicalID returns the lowest non-zero id, or 0 when empty.
+func PickCanonicalID(ids []int64) int64 {
+	if len(ids) == 0 {
+		return 0
+	}
+	sort.Slice(ids, func(i, j int) bool { return ids[i] < ids[j] })
+	return ids[0]
+}
+
+func rowID(m map[string]any) int64 {
+	return flexInt(m["id"])
+}
+
+func rowDisplayName(m map[string]any) string {
+	if v := strings.TrimSpace(fmt.Sprint(m["displayName"])); v != "" && v != "<nil>" {
+		return v
+	}
+	if v := strings.TrimSpace(fmt.Sprint(m["companyName"])); v != "" && v != "<nil>" {
+		return v
+	}
+	first := strings.TrimSpace(fmt.Sprint(m["firstName"]))
+	last := strings.TrimSpace(fmt.Sprint(m["lastName"]))
+	return strings.TrimSpace(first + " " + last)
+}
+
+// GroupCompaniesByName buckets company contacts by normalized display name.
+func GroupCompaniesByName(items []map[string]any) map[string][]map[string]any {
+	out := make(map[string][]map[string]any)
+	for _, row := range items {
+		if !isCompany(row) {
+			continue
+		}
+		key := CompanyGroupingKey(rowDisplayName(row))
+		if key == "" {
+			continue
+		}
+		out[key] = append(out[key], row)
+	}
+	return out
+}
+
+// GroupPersonsByKey buckets person contacts by normalized first+last.
+func GroupPersonsByKey(items []map[string]any) map[string][]map[string]any {
+	out := make(map[string][]map[string]any)
+	for _, row := range items {
+		if isCompany(row) {
+			continue
+		}
+		key := NormalizePersonKey(fmt.Sprint(row["firstName"]), fmt.Sprint(row["lastName"]))
+		if strings.TrimSpace(key) == "" {
+			continue
+		}
+		out[key] = append(out[key], row)
+	}
+	return out
+}
+
+// DealTitleKey returns the grouping key for an opportunity title.
+func DealTitleKey(title string, ignoreCompanySuffix bool) string {
+	title = strings.TrimSpace(title)
+	if ignoreCompanySuffix {
+		return NormalizeOpportunityTitle(StripCompanySuffix(title))
+	}
+	if i := strings.LastIndex(title, " @ "); i >= 0 {
+		pos := strings.TrimSpace(title[:i])
+		co := StripSloganSuffix(strings.TrimSpace(title[i+len(" @ "):]))
+		if pos == "" && co != "" {
+			return NormalizeCompanyName(co)
+		}
+		if pos != "" && co != "" {
+			return collapseKey(pos + " @ " + co)
+		}
+	}
+	return NormalizeCompanyName(StripSloganSuffix(title))
+}
+
+// GroupOpportunitiesByTitle buckets deals by title key.
+func GroupOpportunitiesByTitle(items []map[string]any, ignoreCompanySuffix bool) map[string][]map[string]any {
+	out := make(map[string][]map[string]any)
+	for _, row := range items {
+		title := fmt.Sprint(row["title"])
+		key := DealTitleKey(title, ignoreCompanySuffix)
+		if key == "" {
+			continue
+		}
+		out[key] = append(out[key], row)
+	}
+	return out
+}
+
+// MergePlan lists secondary ids to merge into primary.
+type MergePlan struct {
+	Primary   int64
+	Secondary []int64
+}
+
+// BuildMergePlans creates merge plans from duplicate groups (lowest id wins).
+func BuildMergePlans(groups map[string][]map[string]any) []MergePlan {
+	var plans []MergePlan
+	for _, rows := range groups {
+		if len(rows) < 2 {
+			continue
+		}
+		ids := make([]int64, len(rows))
+		for i, row := range rows {
+			ids[i] = rowID(row)
+		}
+		primary := PickCanonicalID(ids)
+		var secondary []int64
+		for _, id := range ids {
+			if id != primary {
+				secondary = append(secondary, id)
+			}
+		}
+		plans = append(plans, MergePlan{Primary: primary, Secondary: secondary})
+	}
+	return plans
+}
+
+// DedupeMemberIDs returns duplicate member ids to remove (keep first occurrence).
+func DedupeMemberIDs(ids []int64) []int64 {
+	seen := make(map[int64]int)
+	var remove []int64
+	for _, id := range ids {
+		seen[id]++
+		if seen[id] > 1 {
+			remove = append(remove, id)
+		}
+	}
+	return remove
+}
+
+// DedupeMembersByDisplayName returns member ids to remove when the same
+// displayName appears with different ids (keep lowest id per name).
+func DedupeMembersByDisplayName(members []map[string]any) []int64 {
+	type slot struct {
+		id int64
+	}
+	byName := make(map[string][]slot)
+	for _, m := range members {
+		key := MemberDisplayKey(rowDisplayName(m))
+		if key == "" {
+			continue
+		}
+		byName[key] = append(byName[key], slot{id: rowID(m)})
+	}
+	var remove []int64
+	for _, slots := range byName {
+		if len(slots) < 2 {
+			continue
+		}
+		ids := make([]int64, len(slots))
+		for i, s := range slots {
+			ids[i] = s.id
+		}
+		keep := PickCanonicalID(ids)
+		for _, s := range slots {
+			if s.id != keep {
+				remove = append(remove, s.id)
+			}
+		}
+	}
+	return remove
+}
+
+// GroupContactInfoRows returns info row ids to delete (duplicates by type+value).
+func GroupContactInfoRows(rows []map[string]any) []int64 {
+	type rowSlot struct {
+		id        int64
+		isPrimary bool
+	}
+	byKey := make(map[string][]rowSlot)
+	for _, row := range rows {
+		infoType := fmt.Sprint(row["infoType"])
+		value := fmt.Sprint(row["data"])
+		if value == "" || value == "<nil>" {
+			value = fmt.Sprint(row["value"])
+		}
+		key := ContactInfoKey(infoType, value)
+		if key == "|" || value == "" || value == "<nil>" {
+			continue
+		}
+		primary, _ := row["isPrimary"].(bool)
+		byKey[key] = append(byKey[key], rowSlot{id: rowID(row), isPrimary: primary})
+	}
+	var remove []int64
+	for _, slots := range byKey {
+		if len(slots) < 2 {
+			continue
+		}
+		keep := int64(0)
+		for _, s := range slots {
+			if s.isPrimary {
+				keep = s.id
+				break
+			}
+		}
+		if keep == 0 {
+			ids := make([]int64, len(slots))
+			for i, s := range slots {
+				ids[i] = s.id
+			}
+			keep = PickCanonicalID(ids)
+		}
+		for _, s := range slots {
+			if s.id != keep {
+				remove = append(remove, s.id)
+			}
+		}
+	}
+	return remove
+}
+
+// GroupCompanyPersons groups persons by company id and person name key.
+func GroupCompanyPersons(persons []map[string]any) map[int64]map[string][]map[string]any {
+	out := make(map[int64]map[string][]map[string]any)
+	for _, row := range persons {
+		if isCompany(row) {
+			continue
+		}
+		cid := flexInt(row["companyId"])
+		if cid == 0 {
+			continue
+		}
+		key := NormalizePersonKey(fmt.Sprint(row["firstName"]), fmt.Sprint(row["lastName"]))
+		if strings.TrimSpace(key) == "" {
+			continue
+		}
+		if out[cid] == nil {
+			out[cid] = make(map[string][]map[string]any)
+		}
+		out[cid][key] = append(out[cid][key], row)
+	}
+	return out
+}

crm_dedupe_plan_test.go

@@ -0,0 +1,100 @@
+package onlyoffice
+
+import (
+	"reflect"
+	"testing"
+)
+
+func TestPickCanonicalID(t *testing.T) {
+	if got := PickCanonicalID([]int64{908, 857, 900}); got != 857 {
+		t.Fatalf("got %d", got)
+	}
+	if got := PickCanonicalID(nil); got != 0 {
+		t.Fatalf("got %d", got)
+	}
+}
+
+func TestGroupCompaniesByName(t *testing.T) {
+	items := []map[string]any{
+		{"id": float64(857), "displayName": "contoso", "isCompany": true},
+		{"id": float64(908), "displayName": "contoso", "isCompany": true},
+		{"id": float64(1), "displayName": "Acme", "isCompany": true},
+	}
+	groups := GroupCompaniesByName(items)
+	if len(groups) != 2 {
+		t.Fatalf("groups: %d", len(groups))
+	}
+	key := CompanyGroupingKey("contoso")
+	if len(groups[key]) != 2 {
+		t.Fatalf("contoso group: %d", len(groups[key]))
+	}
+}
+
+func TestDedupeMembersByDisplayName(t *testing.T) {
+	members := []map[string]any{
+		{"id": float64(857), "displayName": "contoso"},
+		{"id": float64(908), "displayName": "contoso"},
+		{"id": float64(10), "displayName": "Acme"},
+	}
+	remove := DedupeMembersByDisplayName(members)
+	want := []int64{908}
+	if !reflect.DeepEqual(remove, want) {
+		t.Fatalf("remove %v want %v", remove, want)
+	}
+}
+
+func TestDedupeMemberIDs(t *testing.T) {
+	remove := DedupeMemberIDs([]int64{1, 2, 2, 3, 1})
+	if !reflect.DeepEqual(remove, []int64{2, 1}) {
+		t.Fatalf("got %v", remove)
+	}
+}
+
+func TestGroupContactInfoRows(t *testing.T) {
+	rows := []map[string]any{
+		{"id": float64(1), "infoType": "Email", "data": "a@b.com", "isPrimary": false},
+		{"id": float64(2), "infoType": "Email", "data": "a@b.com", "isPrimary": true},
+	}
+	remove := GroupContactInfoRows(rows)
+	if len(remove) != 1 || remove[0] != 1 {
+		t.Fatalf("remove %v", remove)
+	}
+}
+
+func TestGroupCompaniesBySlogan(t *testing.T) {
+	items := []map[string]any{
+		{"id": float64(1), "displayName": "Affirm", "isCompany": true},
+		{"id": float64(2), "displayName": "Affirm — Fraud Engineering", "isCompany": true},
+	}
+	groups := GroupCompaniesByName(items)
+	if len(groups) != 1 {
+		t.Fatalf("groups: %d", len(groups))
+	}
+	key := CompanyGroupingKey("Affirm")
+	if len(groups[key]) != 2 {
+		t.Fatalf("affirm group: %d", len(groups[key]))
+	}
+}
+
+func TestDedupeMembersBySloganDisplayName(t *testing.T) {
+	members := []map[string]any{
+		{"id": float64(1), "displayName": "Affirm"},
+		{"id": float64(2), "displayName": "Affirm — Fraud Engineering"},
+	}
+	remove := DedupeMembersByDisplayName(members)
+	if !reflect.DeepEqual(remove, []int64{2}) {
+		t.Fatalf("remove %v", remove)
+	}
+}
+
+func TestDealTitleKey(t *testing.T) {
+	if got := DealTitleKey("Dev @ Acme", false); got != collapseKey("Dev @ Acme") {
+		t.Fatalf("got %q", got)
+	}
+	if got := DealTitleKey("Dev @ Acme", true); got != NormalizeOpportunityTitle("Dev") {
+		t.Fatalf("got %q", got)
+	}
+	if got := DealTitleKey("Dev @ Affirm — Fraud Engineering", false); got != DealTitleKey("Dev @ Affirm", false) {
+		t.Fatalf("slogan keys differ: %q vs %q", got, DealTitleKey("Dev @ Affirm", false))
+	}
+}

crm_dedupe_test.go

@@ -0,0 +1,133 @@
+package onlyoffice
+
+import (
+	"context"
+	"reflect"
+	"testing"
+)
+
+type fakeDedupeClient struct {
+	contacts      []map[string]any
+	opportunities []map[string]any
+	contactByID   map[string]map[string]any
+	oppByID       map[string]map[string]any
+	merged        [][2]string
+	deletedOpp    []string
+	deletedInfo   [][2]string
+	removedMember [][2]string
+	renamed       map[string]string
+}
+
+func (f *fakeDedupeClient) ListAllContacts(ctx context.Context) ([]map[string]any, error) {
+	return f.contacts, nil
+}
+
+func (f *fakeDedupeClient) ListAllOpportunities(ctx context.Context) ([]map[string]any, error) {
+	return f.opportunities, nil
+}
+
+func (f *fakeDedupeClient) GetContact(ctx context.Context, contactID string) (map[string]any, error) {
+	return f.contactByID[contactID], nil
+}
+
+func (f *fakeDedupeClient) GetOpportunity(ctx context.Context, id string) (map[string]any, error) {
+	return f.oppByID[id], nil
+}
+
+func (f *fakeDedupeClient) MergeContacts(ctx context.Context, primaryID, secondaryID string) (map[string]any, error) {
+	f.merged = append(f.merged, [2]string{primaryID, secondaryID})
+	return map[string]any{"id": primaryID}, nil
+}
+
+func (f *fakeDedupeClient) DeleteOpportunity(ctx context.Context, id string) (map[string]any, error) {
+	f.deletedOpp = append(f.deletedOpp, id)
+	return map[string]any{}, nil
+}
+
+func (f *fakeDedupeClient) DeleteContactInfo(ctx context.Context, contactID, dataID string) (map[string]any, error) {
+	f.deletedInfo = append(f.deletedInfo, [2]string{contactID, dataID})
+	return map[string]any{}, nil
+}
+
+func (f *fakeDedupeClient) ListCompanyPersons(ctx context.Context, companyID string) ([]map[string]any, error) {
+	return nil, nil
+}
+
+func (f *fakeDedupeClient) AddOpportunityMember(ctx context.Context, oppID, contactID string) (map[string]any, error) {
+	return map[string]any{}, nil
+}
+
+func (f *fakeDedupeClient) RemoveOpportunityMember(ctx context.Context, oppID, contactID string) (map[string]any, error) {
+	f.removedMember = append(f.removedMember, [2]string{oppID, contactID})
+	return map[string]any{}, nil
+}
+
+func (f *fakeDedupeClient) UpdateOpportunityTitle(ctx context.Context, id, newTitle string) (map[string]any, error) {
+	if f.renamed == nil {
+		f.renamed = make(map[string]string)
+	}
+	f.renamed[id] = newTitle
+	return map[string]any{"title": newTitle}, nil
+}
+
+func TestDedupeCompaniesOrchestration(t *testing.T) {
+	f := &fakeDedupeClient{
+		contacts: []map[string]any{
+			{"id": float64(857), "displayName": "contoso", "isCompany": true},
+			{"id": float64(908), "displayName": "contoso", "isCompany": true},
+		},
+	}
+	res, err := DedupeCompanies(context.Background(), f)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if res.Merged != 1 || res.Groups != 1 {
+		t.Fatalf("res %+v", res)
+	}
+	want := [][2]string{{"857", "908"}}
+	if !reflect.DeepEqual(f.merged, want) {
+		t.Fatalf("merged %v", f.merged)
+	}
+}
+
+func TestDedupeOpportunityMembersOrchestration(t *testing.T) {
+	f := &fakeDedupeClient{
+		opportunities: []map[string]any{{"id": float64(231), "title": " @ contoso"}},
+		oppByID: map[string]map[string]any{
+			"231": {
+				"id": float64(231),
+				"members": []any{
+					map[string]any{"id": float64(857), "displayName": "contoso"},
+					map[string]any{"id": float64(908), "displayName": "contoso"},
+				},
+			},
+		},
+	}
+	res, err := DedupeOpportunityMembers(context.Background(), f)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if res.Removed != 1 {
+		t.Fatalf("res %+v", res)
+	}
+	if len(f.removedMember) != 1 || f.removedMember[0][1] != "908" {
+		t.Fatalf("removed %v", f.removedMember)
+	}
+}
+
+func TestFixOpportunityTitlesOrchestration(t *testing.T) {
+	f := &fakeDedupeClient{
+		opportunities: []map[string]any{{"id": float64(231), "title": " @ contoso"}},
+		oppByID:       map[string]map[string]any{"231": {"id": float64(231), "title": " @ contoso"}},
+	}
+	res, err := FixOpportunityTitles(context.Background(), f)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if res.Renamed != 1 {
+		t.Fatalf("res %+v", res)
+	}
+	if f.renamed["231"] != "contoso" {
+		t.Fatalf("renamed %v", f.renamed)
+	}
+}

crm_integration_test.go

@@ -0,0 +1,129 @@
+//go:build integration
+
+package onlyoffice
+
+import (
+	"context"
+	"fmt"
+	"strconv"
+	"strings"
+	"testing"
+	"time"
+)
+
+const testCRMPrefix = "go-onlyoffice-test-"
+
+func TestIntegrationMergeContacts(t *testing.T) {
+	c := liveClient(t)
+	ctx := context.Background()
+	suffix := strconv.FormatInt(time.Now().UnixNano(), 10)
+	name := testCRMPrefix + "merge-" + suffix
+
+	a, err := c.CreateCompany(ctx, name)
+	if err != nil {
+		t.Fatalf("CreateCompany a: %v", err)
+	}
+	b, err := c.CreateCompany(ctx, name)
+	if err != nil {
+		t.Fatalf("CreateCompany b: %v", err)
+	}
+	aID := strconv.FormatInt(flexInt(a["id"]), 10)
+	bID := strconv.FormatInt(flexInt(b["id"]), 10)
+	t.Cleanup(func() { _, _ = c.DeleteContact(ctx, aID) })
+
+	if _, err := c.MergeContacts(ctx, aID, bID); err != nil {
+		t.Fatalf("MergeContacts: %v", err)
+	}
+	got, err := c.GetContact(ctx, aID)
+	if err != nil {
+		t.Fatalf("GetContact: %v", err)
+	}
+	if got == nil {
+		t.Fatal("primary contact missing after merge")
+	}
+}
+
+func TestIntegrationUpdateOpportunityTitle(t *testing.T) {
+	c := liveClient(t)
+	ctx := context.Background()
+	stages, err := c.ListDealStages(ctx)
+	if err != nil || len(stages) == 0 {
+		t.Fatalf("ListDealStages: %v", err)
+	}
+	stageID := int(flexInt(stages[0]["id"]))
+	title := testCRMPrefix + "title-" + strconv.FormatInt(time.Now().UnixNano(), 10)
+	opp, err := c.CreateOpportunity(ctx, title, stageID, "", "EUR", "", 0)
+	if err != nil {
+		t.Fatalf("CreateOpportunity: %v", err)
+	}
+	id := strconv.FormatInt(flexInt(opp["id"]), 10)
+	t.Cleanup(func() { _, _ = c.DeleteOpportunity(ctx, id) })
+
+	newTitle := title + "-renamed"
+	if _, err := c.UpdateOpportunityTitle(ctx, id, newTitle); err != nil {
+		t.Fatalf("UpdateOpportunityTitle: %v", err)
+	}
+	got, err := c.GetOpportunity(ctx, id)
+	if err != nil {
+		t.Fatalf("GetOpportunity: %v", err)
+	}
+	if strings.TrimSpace(fmt.Sprint(got["title"])) != newTitle {
+		t.Fatalf("title %q want %q", got["title"], newTitle)
+	}
+}
+
+func TestIntegrationDedupeCompaniesSmoke(t *testing.T) {
+	c := liveClient(t)
+	ctx := context.Background()
+	suffix := strconv.FormatInt(time.Now().UnixNano(), 10)
+	name := testCRMPrefix + "dedupe-" + suffix
+	co1, err := c.CreateCompany(ctx, name)
+	if err != nil {
+		t.Fatalf("CreateCompany: %v", err)
+	}
+	co2, err := c.CreateCompany(ctx, name)
+	if err != nil {
+		t.Fatalf("CreateCompany: %v", err)
+	}
+	t.Cleanup(func() {
+		id1 := strconv.FormatInt(flexInt(co1["id"]), 10)
+		_, _ = c.DeleteContact(ctx, id1)
+	})
+
+	res, err := DedupeCompanies(ctx, c)
+	if err != nil {
+		t.Fatalf("DedupeCompanies: %v", err)
+	}
+	if res.Merged < 1 {
+		t.Fatalf("expected merge, got %+v", res)
+	}
+	_ = co2
+}
+
+func TestIntegrationFixOpportunityTitleDeal231Pattern(t *testing.T) {
+	c := liveClient(t)
+	ctx := context.Background()
+	stages, err := c.ListDealStages(ctx)
+	if err != nil || len(stages) == 0 {
+		t.Fatalf("ListDealStages: %v", err)
+	}
+	stageID := int(flexInt(stages[0]["id"]))
+	opp, err := c.CreateOpportunity(ctx, " @ contoso-test", stageID, "", "EUR", "", 0)
+	if err != nil {
+		t.Fatalf("CreateOpportunity: %v", err)
+	}
+	id := strconv.FormatInt(flexInt(opp["id"]), 10)
+	t.Cleanup(func() { _, _ = c.DeleteOpportunity(ctx, id) })
+
+	fixed := FixDealTitle(" @ contoso-test")
+	if _, err := c.UpdateOpportunityTitle(ctx, id, fixed); err != nil {
+		t.Fatalf("UpdateOpportunityTitle: %v", err)
+	}
+	got, err := c.GetOpportunity(ctx, id)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if fmt.Sprint(got["title"]) != "contoso-test" {
+		t.Fatalf("title %q", got["title"])
+	}
+}

crm_normalize.go

@@ -0,0 +1,108 @@
+package onlyoffice
+
+import (
+	"regexp"
+	"strings"
+)
+
+var multiSpace = regexp.MustCompile(`\s+`)
+
+// sloganSeparators split a company name from a trailing tagline/slogan.
+var sloganSeparators = []string{" — ", " – ", " - ", "—", "–"}
+
+// StripSloganSuffix returns the part before an em/en dash tagline, e.g.
+// "Affirm — Fraud Engineering" → "Affirm".
+func StripSloganSuffix(s string) string {
+	s = strings.TrimSpace(s)
+	for _, sep := range sloganSeparators {
+		if i := strings.Index(s, sep); i > 0 {
+			return strings.TrimSpace(s[:i])
+		}
+	}
+	return s
+}
+
+// CompanyGroupingKey normalizes a company name for dedupe (ignores slogans).
+func CompanyGroupingKey(s string) string {
+	return NormalizeCompanyName(StripSloganSuffix(s))
+}
+
+// NormalizeCompanyName lowercases and collapses whitespace for grouping.
+func NormalizeCompanyName(s string) string {
+	return collapseKey(s)
+}
+
+// NormalizePersonKey builds a grouping key from first and last name.
+func NormalizePersonKey(first, last string) string {
+	return collapseKey(strings.TrimSpace(first) + " " + strings.TrimSpace(last))
+}
+
+// NormalizeOpportunityTitle lowercases and trims a deal title for exact dedupe.
+func NormalizeOpportunityTitle(s string) string {
+	return collapseKey(s)
+}
+
+// StripCompanySuffix removes a trailing " @ Company" segment when present.
+func StripCompanySuffix(title string) string {
+	title = strings.TrimSpace(title)
+	if i := strings.LastIndex(title, " @ "); i >= 0 {
+		return strings.TrimSpace(title[:i])
+	}
+	return title
+}
+
+// FixDealTitle strips a leading @, normalizes separator spacing, and collapses
+// empty-position titles like " @ contoso" to "contoso".
+func FixDealTitle(s string) string {
+	s = strings.TrimSpace(s)
+	for strings.HasPrefix(s, "@") {
+		s = strings.TrimSpace(strings.TrimPrefix(s, "@"))
+	}
+	if s == "" {
+		return ""
+	}
+	if i := strings.Index(s, "@"); i >= 0 {
+		left := strings.TrimSpace(s[:i])
+		right := strings.TrimSpace(s[i+1:])
+		if left == "" && right != "" {
+			return right
+		}
+		if left != "" && right != "" {
+			return left + " @ " + right
+		}
+	}
+	return s
+}
+
+// ContactInfoKey groups contact info rows by type and normalized value.
+func ContactInfoKey(infoType, value string) string {
+	return strings.ToLower(strings.TrimSpace(infoType)) + "|" + strings.ToLower(strings.TrimSpace(value))
+}
+
+// MemberDisplayKey normalizes a member displayName for duplicate detection.
+func MemberDisplayKey(displayName string) string {
+	return CompanyGroupingKey(displayName)
+}
+
+func collapseKey(s string) string {
+	s = strings.TrimSpace(s)
+	s = multiSpace.ReplaceAllString(s, " ")
+	return strings.ToLower(s)
+}
+
+// OpportunityTitlesMatch reports whether two deal titles refer to the same role+company.
+func OpportunityTitlesMatch(a, b string) bool {
+	return DealTitleKey(a, false) == DealTitleKey(b, false)
+}
+
+func DealTitleForApplication(position, company string) string {
+	position = strings.TrimSpace(position)
+	company = strings.TrimSpace(company)
+	if company == "" {
+		return position
+	}
+	if position == "" {
+		return company
+	}
+	return position + " @ " + company
+}

crm_normalize_test.go

@@ -0,0 +1,104 @@
+package onlyoffice
+
+import "testing"
+
+func TestNormalizeCompanyName(t *testing.T) {
+	tests := []struct {
+		in, want string
+	}{
+		{" contoso ", "contoso"},
+		{"Contoso", "contoso"},
+		{"Acme  Corp", "acme corp"},
+	}
+	for _, tc := range tests {
+		if got := NormalizeCompanyName(tc.in); got != tc.want {
+			t.Errorf("NormalizeCompanyName(%q) = %q, want %q", tc.in, got, tc.want)
+		}
+	}
+}
+
+func TestNormalizePersonKey(t *testing.T) {
+	if got := NormalizePersonKey(" Jane ", " Doe "); got != "jane doe" {
+		t.Fatalf("got %q", got)
+	}
+}
+
+func TestFixDealTitle(t *testing.T) {
+	tests := []struct {
+		in, want string
+	}{
+		{" @ contoso", "contoso"},
+		{"@ contoso", "contoso"},
+		{"@Acme", "Acme"},
+		{"Dev@Acme", "Dev @ Acme"},
+		{"Dev  @  Acme", "Dev @ Acme"},
+		{"Senior Dev @ Acme", "Senior Dev @ Acme"},
+		{"", ""},
+	}
+	for _, tc := range tests {
+		if got := FixDealTitle(tc.in); got != tc.want {
+			t.Errorf("FixDealTitle(%q) = %q, want %q", tc.in, got, tc.want)
+		}
+	}
+}
+
+func TestStripSloganSuffix(t *testing.T) {
+	tests := []struct {
+		in, want string
+	}{
+		{"Affirm — Fraud Engineering", "Affirm"},
+		{"Affirm - Fraud Engineering", "Affirm"},
+		{"Affirm – Fraud Engineering", "Affirm"},
+		{"Affirm", "Affirm"},
+		{"— leading", "— leading"},
+	}
+	for _, tc := range tests {
+		if got := StripSloganSuffix(tc.in); got != tc.want {
+			t.Errorf("StripSloganSuffix(%q) = %q, want %q", tc.in, got, tc.want)
+		}
+	}
+}
+
+func TestCompanyGroupingKey(t *testing.T) {
+	a := CompanyGroupingKey("Affirm")
+	b := CompanyGroupingKey("Affirm — Fraud Engineering")
+	if a != b {
+		t.Fatalf("%q != %q", a, b)
+	}
+}
+
+func TestOpportunityTitlesMatchSlogan(t *testing.T) {
+	if !OpportunityTitlesMatch("Dev @ Affirm — Fraud Engineering", "Dev @ Affirm") {
+		t.Fatal("expected match")
+	}
+}
+
+func TestStripCompanySuffix(t *testing.T) {
+	if got := StripCompanySuffix("Dev @ Acme"); got != "Dev" {
+		t.Fatalf("got %q", got)
+	}
+	if got := StripCompanySuffix("Dev"); got != "Dev" {
+		t.Fatalf("got %q", got)
+	}
+}
+
+func TestContactInfoKey(t *testing.T) {
+	if got := ContactInfoKey("Email", "  A@B.COM "); got != "email|a@b.com" {
+		t.Fatalf("got %q", got)
+	}
+}
+
+func TestMemberDisplayKey(t *testing.T) {
+	if got := MemberDisplayKey(" contoso "); got != "contoso" {
+		t.Fatalf("got %q", got)
+	}
+}
+
+func TestDealTitleForApplication(t *testing.T) {
+	if got := DealTitleForApplication("", "contoso"); got != "contoso" {
+		t.Fatalf("got %q", got)
+	}
+	if got := DealTitleForApplication("Dev", "Acme"); got != "Dev @ Acme" {
+		t.Fatalf("got %q", got)
+	}
+}

examples/calendar/main.go

@@ -0,0 +1,62 @@
+// Package main shows how to list calendars and events, and create a new event
+// via the OnlyOffice Calendar API.
+//
+//	export ONLYOFFICE_URL="https://your-instance.onlyoffice.com"
+//	export ONLYOFFICE_USER="admin@example.com"
+//	export ONLYOFFICE_PASS="your-password"
+//	# optional: default calendar for AddEvent
+//	export ONLYOFFICE_CALENDAR_ID="42"
+//	go run ./examples/calendar
+package main
+
+import (
+	"context"
+	"fmt"
+	"log"
+	"os"
+	"time"
+
+	onlyoffice "github.com/eslider/go-onlyoffice"
+)
+
+func main() {
+	creds := onlyoffice.GetEnvironmentCredentials()
+	if creds.Url == "" {
+		fmt.Fprintln(os.Stderr, "ONLYOFFICE_URL is not set")
+		os.Exit(1)
+	}
+
+	client := onlyoffice.NewClient(creds)
+	client.SetDefaults(onlyoffice.GetEnvironmentDefaults())
+
+	ctx := context.Background()
+	start := time.Now().Format("2006-01-02")
+	end := time.Now().AddDate(0, 1, 0).Format("2006-01-02")
+
+	calendars, err := client.ListCalendars(ctx, start, end)
+	if err != nil {
+		log.Fatalf("list calendars: %v", err)
+	}
+	fmt.Printf("Calendars (%d):\n", len(calendars))
+	for _, cal := range calendars {
+		fmt.Printf("  - id=%v title=%v\n", cal["objectId"], cal["title"])
+	}
+
+	events, err := client.ListEvents(ctx, start, end)
+	if err != nil {
+		log.Fatalf("list events: %v", err)
+	}
+	fmt.Printf("\nEvents in [%s..%s]: %d\n", start, end, len(events))
+	for _, e := range events {
+		fmt.Printf("  - %v @ %v\n", e["title"], e["start"])
+	}
+
+	// Create demo event — uncomment to exercise.
+	// evStart := time.Now().Add(time.Hour).Format(time.RFC3339)
+	// evEnd := time.Now().Add(2 * time.Hour).Format(time.RFC3339)
+	// created, err := client.AddEvent(ctx, "", "Library demo", evStart, evEnd, "via examples/calendar", false)
+	// if err != nil {
+	// 	log.Fatalf("add event: %v", err)
+	// }
+	// fmt.Printf("created event id=%v\n", created["objectId"])
+}

examples/crm/main.go

@@ -0,0 +1,63 @@
+// Package main lists CRM contacts and opportunities, and shows how to create
+// and remove a demo company + opportunity + history note in OnlyOffice CRM.
+//
+//	export ONLYOFFICE_URL="https://your-instance.onlyoffice.com"
+//	export ONLYOFFICE_USER="admin@example.com"
+//	export ONLYOFFICE_PASS="your-password"
+//	go run ./examples/crm
+package main
+
+import (
+	"context"
+	"fmt"
+	"log"
+	"os"
+
+	onlyoffice "github.com/eslider/go-onlyoffice"
+)
+
+func main() {
+	creds := onlyoffice.GetEnvironmentCredentials()
+	if creds.Url == "" {
+		fmt.Fprintln(os.Stderr, "ONLYOFFICE_URL is not set")
+		os.Exit(1)
+	}
+
+	client := onlyoffice.NewClient(creds)
+	ctx := context.Background()
+
+	contacts, total, err := client.ListContacts(ctx, 10, 0, "")
+	if err != nil {
+		log.Fatalf("list contacts: %v", err)
+	}
+	fmt.Printf("CRM contacts: %d (total=%d)\n", len(contacts), total)
+	for _, c := range contacts {
+		fmt.Printf("  - id=%v name=%v\n", c["id"], c["displayName"])
+	}
+
+	opps, oppTotal, err := client.ListOpportunities(ctx, 10, 0)
+	if err != nil {
+		log.Fatalf("list opportunities: %v", err)
+	}
+	fmt.Printf("\nOpportunities: %d (total=%d)\n", len(opps), oppTotal)
+	for _, o := range opps {
+		fmt.Printf("  - id=%v title=%v\n", o["id"], o["title"])
+	}
+
+	// Full create/attach/delete cycle — uncomment to exercise.
+	// company, err := client.CreateCompany(ctx, "Demo GmbH")
+	// if err != nil { log.Fatalf("create company: %v", err) }
+	// cid := fmt.Sprint(company["id"])
+	// defer client.DeleteContact(ctx, cid)
+	//
+	// stages, err := client.ListDealStages(ctx)
+	// if err != nil || len(stages) == 0 { log.Fatalf("no deal stages: %v", err) }
+	// stageID := int(stages[0]["id"].(float64))
+	//
+	// opp, err := client.CreateOpportunity(ctx, "Demo opp", stageID, "", "EUR", "from examples/crm", 0)
+	// if err != nil { log.Fatalf("create opportunity: %v", err) }
+	// oid := fmt.Sprint(opp["id"])
+	// _, _ = client.AddOpportunityMember(ctx, oid, cid)
+	// _, _ = client.AddHistoryNote(ctx, "opportunity", int(opp["id"].(float64)), "Touched via library example", 0)
+	// _, _ = client.DeleteOpportunity(ctx, oid)
+}

examples/subtasks/main.go

@@ -0,0 +1,51 @@
+// Package main creates a parent task and attaches two subtasks using the
+// project-tasks API (POST /api/2.0/project/task/{id}.json).
+//
+//	export ONLYOFFICE_URL="https://your-instance.onlyoffice.com"
+//	export ONLYOFFICE_USER="admin@example.com"
+//	export ONLYOFFICE_PASS="your-password"
+//	export ONLYOFFICE_PROJECT_ID="123"
+//	go run ./examples/subtasks
+package main
+
+import (
+	"context"
+	"fmt"
+	"log"
+	"os"
+
+	onlyoffice "github.com/eslider/go-onlyoffice"
+)
+
+func main() {
+	creds := onlyoffice.GetEnvironmentCredentials()
+	defaults := onlyoffice.GetEnvironmentDefaults()
+	if creds.Url == "" || defaults.ProjectID == "" {
+		fmt.Fprintln(os.Stderr, "ONLYOFFICE_URL and ONLYOFFICE_PROJECT_ID must be set")
+		os.Exit(1)
+	}
+
+	client := onlyoffice.NewClient(creds)
+	client.SetDefaults(defaults)
+	ctx := context.Background()
+
+	parent, err := client.AddTask(ctx, defaults.ProjectID, "Example parent", "Created by examples/subtasks", 0, "")
+	if err != nil {
+		log.Fatalf("add parent task: %v", err)
+	}
+	parentID := fmt.Sprint(parent["id"])
+	fmt.Printf("parent task id=%s\n", parentID)
+
+	for _, title := range []string{"first subtask", "second subtask"} {
+		st, err := client.AddSubtask(ctx, parentID, title)
+		if err != nil {
+			log.Fatalf("add subtask %q: %v", title, err)
+		}
+		fmt.Printf("  + subtask id=%v title=%v\n", st["id"], st["title"])
+	}
+
+	// Cleanup — uncomment once you verified the subtasks in the OnlyOffice UI.
+	// if _, err := client.DeleteTask(ctx, parentID); err != nil {
+	// 	log.Printf("cleanup: %v", err)
+	// }
+}

files.go

@@ -0,0 +1,384 @@
+package onlyoffice
+
+import (
+	"context"
+	"encoding/json"
+	"fmt"
+	"io"
+	"net/http"
+	"net/url"
+	"path"
+	"strconv"
+	"strings"
+	"time"
+)
+
+// FileEntry is a file row from the OnlyOffice Files module or project/task
+// file listings (field names follow the Workspace API JSON).
+type FileEntry struct {
+	ID            *json.Number `json:"id,omitempty"`
+	Title         *string      `json:"title,omitempty"`
+	FileExst      *string      `json:"fileExst,omitempty"`
+	ContentLength *string      `json:"contentLength,omitempty"`
+	FileType      *int         `json:"fileType,omitempty"`
+	ViewURL       *string      `json:"viewUrl,omitempty"`
+	WebURL        *string      `json:"webUrl,omitempty"`
+	FolderID      *json.Number `json:"folderId,omitempty"`
+	Updated       *time.Time   `json:"updated,omitempty"`
+	CreatedBy     *User        `json:"createdBy,omitempty"`
+}
+
+// FolderEntry is a folder row from project files listing.
+type FolderEntry struct {
+	ID           *json.Number `json:"id,omitempty"`
+	Title        *string      `json:"title,omitempty"`
+	FilesCount   *int         `json:"filesCount,omitempty"`
+	FoldersCount *int         `json:"foldersCount,omitempty"`
+}
+
+// ProjectFilesResponse is the "response" object from GET
+// /api/2.0/project/{id}/files — files and folders attached to the project.
+type ProjectFilesResponse struct {
+	Folders []*FolderEntry `json:"folders"`
+	Files   []*FileEntry   `json:"files"`
+}
+
+// UploadOpportunityFile uploads a single file to a CRM opportunity.
+// Returns the decoded "response" object from OnlyOffice.
+func (c *Client) UploadOpportunityFile(ctx context.Context, opportunityID, filePath string) (map[string]any, error) {
+	p := fmt.Sprintf("/api/2.0/crm/opportunity/%s/files/upload.json", url.PathEscape(opportunityID))
+	raw, err := c.uploadMultipart(ctx, p, "file", filePath)
+	if err != nil {
+		return nil, err
+	}
+	return unmarshalResponseObject(raw)
+}
+
+// GetProjectFiles returns files and folders linked to the project.
+func (c *Client) GetProjectFiles(ctx context.Context, projectID string) (*ProjectFilesResponse, error) {
+	if projectID == "" {
+		projectID = c.defaults.ProjectID
+	}
+	if projectID == "" {
+		return nil, fmt.Errorf("project id is required")
+	}
+	p := fmt.Sprintf("/api/2.0/project/%s/files.json", url.PathEscape(projectID))
+	raw, err := c.getJSON(ctx, p)
+	if err != nil {
+		return nil, err
+	}
+	resp, err := responseField(raw, "response")
+	if err != nil {
+		return nil, err
+	}
+	if len(resp) == 0 || string(resp) == "null" {
+		return &ProjectFilesResponse{}, nil
+	}
+	var out ProjectFilesResponse
+	if err := json.Unmarshal(resp, &out); err != nil {
+		return nil, err
+	}
+	return &out, nil
+}
+
+// GetTaskFiles returns files attached to a project task.
+func (c *Client) GetTaskFiles(ctx context.Context, taskID string) ([]*FileEntry, error) {
+	if taskID == "" {
+		return nil, fmt.Errorf("task id is required")
+	}
+	p := fmt.Sprintf("/api/2.0/project/task/%s/files.json", url.PathEscape(taskID))
+	raw, err := c.getJSON(ctx, p)
+	if err != nil {
+		return nil, err
+	}
+	resp, err := responseField(raw, "response")
+	if err != nil {
+		return nil, err
+	}
+	if len(resp) == 0 || string(resp) == "null" {
+		return nil, nil
+	}
+	var list []*FileEntry
+	if err := json.Unmarshal(resp, &list); err != nil {
+		return nil, err
+	}
+	return list, nil
+}
+
+// UploadTaskFile uploads a file into the task's project Documents folder, then
+// attaches the new file id to the task. OnlyOffice POST .../task/{id}/files
+// expects existing file IDs, not a multipart body.
+func (c *Client) UploadTaskFile(ctx context.Context, taskID, localPath string) (*FileEntry, error) {
+	if taskID == "" {
+		return nil, fmt.Errorf("task id is required")
+	}
+	task, err := c.GetTaskByID(ctx, taskID)
+	if err != nil {
+		return nil, err
+	}
+	pid := projectIDFromTaskMap(task)
+	if pid == "" {
+		return nil, fmt.Errorf("task %s: cannot resolve project id for upload", taskID)
+	}
+	entry, err := c.UploadProjectFile(ctx, pid, localPath)
+	if err != nil {
+		return nil, err
+	}
+	nid := int(FileEntryNumericID(entry))
+	if nid == 0 {
+		return nil, fmt.Errorf("upload returned no file id")
+	}
+	if err := c.AttachFilesToTask(ctx, taskID, nid); err != nil {
+		return nil, err
+	}
+	return entry, nil
+}
+
+// AttachFilesToTask links existing Documents-module files to a task.
+func (c *Client) AttachFilesToTask(ctx context.Context, taskID string, fileIDs ...int) error {
+	if taskID == "" || len(fileIDs) == 0 {
+		return fmt.Errorf("task id and at least one file id are required")
+	}
+	v := url.Values{}
+	for _, id := range fileIDs {
+		v.Add("files", strconv.Itoa(id))
+	}
+	p := fmt.Sprintf("/api/2.0/project/task/%s/files.json", url.PathEscape(taskID))
+	if _, err := c.postForm(ctx, p, v); err != nil {
+		p2 := fmt.Sprintf("/api/2.0/project/task/%s/files", url.PathEscape(taskID))
+		if _, err2 := c.postForm(ctx, p2, v); err2 != nil {
+			return fmt.Errorf("attach files to task: %w (retry: %v)", err, err2)
+		}
+	}
+	return nil
+}
+
+func projectIDFromTaskMap(m map[string]any) string {
+	if m == nil {
+		return ""
+	}
+	if po, ok := m["projectOwner"].(map[string]any); ok {
+		if id, ok := po["id"]; ok {
+			switch x := id.(type) {
+			case float64:
+				return strconv.FormatInt(int64(x), 10)
+			case int:
+				return strconv.Itoa(x)
+			case string:
+				return x
+			}
+		}
+	}
+	return ""
+}
+
+// DetachTaskFile removes a file attachment from the task (file remains in Documents).
+func (c *Client) DetachTaskFile(ctx context.Context, taskID, fileID string) error {
+	if taskID == "" || fileID == "" {
+		return fmt.Errorf("task id and file id are required")
+	}
+	q := url.Values{}
+	q.Set("fileid", fileID)
+	p := fmt.Sprintf("/api/2.0/project/task/%s/files.json?%s", url.PathEscape(taskID), q.Encode())
+	if _, err := c.deleteReq(ctx, p); err != nil {
+		p2 := fmt.Sprintf("/api/2.0/project/task/%s/files?%s", url.PathEscape(taskID), q.Encode())
+		if _, err2 := c.deleteReq(ctx, p2); err2 != nil {
+			return fmt.Errorf("detach task file: %w (retry: %v)", err, err2)
+		}
+	}
+	return nil
+}
+
+// projectFolderID resolves the Documents folder id for project file uploads.
+func (c *Client) projectFolderID(ctx context.Context, projectID string) (string, error) {
+	m, err := c.GetProjectByID(ctx, projectID)
+	if err != nil {
+		return "", err
+	}
+	if v, ok := m["projectFolder"]; ok && v != nil {
+		switch x := v.(type) {
+		case float64:
+			return strconv.FormatInt(int64(x), 10), nil
+		case json.Number:
+			return x.String(), nil
+		case string:
+			if x != "" {
+				return x, nil
+			}
+		}
+	}
+	// Fallback: first folder from project files listing.
+	pf, err := c.GetProjectFiles(ctx, projectID)
+	if err != nil {
+		return "", err
+	}
+	if len(pf.Folders) > 0 && pf.Folders[0].ID != nil {
+		return pf.Folders[0].ID.String(), nil
+	}
+	return "", fmt.Errorf("project %s has no projectFolder and no folders in files listing", projectID)
+}
+
+// UploadProjectFile uploads a file into the project's Documents folder.
+func (c *Client) UploadProjectFile(ctx context.Context, projectID, localPath string) (*FileEntry, error) {
+	folderID, err := c.projectFolderID(ctx, projectID)
+	if err != nil {
+		return nil, err
+	}
+	// Workspace DocumentsApi.UploadFile: POST .../{folderId}/upload (multipart or raw stream).
+	uploadPath := fmt.Sprintf("/api/2.0/files/%s/upload.json", url.PathEscape(folderID))
+	raw, err := c.uploadMultipart(ctx, uploadPath, "file", localPath)
+	if err != nil {
+		uploadPath = fmt.Sprintf("/api/2.0/files/%s/upload", url.PathEscape(folderID))
+		raw, err = c.uploadMultipart(ctx, uploadPath, "file", localPath)
+		if err != nil {
+			return nil, err
+		}
+	}
+	return decodeResponseFileEntry(raw)
+}
+
+// GetFile returns file metadata including viewUrl for download.
+func (c *Client) GetFile(ctx context.Context, fileID string) (*FileEntry, error) {
+	if fileID == "" {
+		return nil, fmt.Errorf("file id is required")
+	}
+	p := fmt.Sprintf("/api/2.0/files/file/%s.json", url.PathEscape(fileID))
+	raw, err := c.getJSON(ctx, p)
+	if err != nil {
+		return nil, err
+	}
+	return decodeResponseFileEntry(raw)
+}
+
+// RenameFile sets a new title (including extension) for the file.
+func (c *Client) RenameFile(ctx context.Context, fileID, newTitle string) (*FileEntry, error) {
+	if fileID == "" || newTitle == "" {
+		return nil, fmt.Errorf("file id and new title are required")
+	}
+	p := fmt.Sprintf("/api/2.0/files/file/%s.json", url.PathEscape(fileID))
+	raw, err := c.putJSON(ctx, p, map[string]string{"title": newTitle})
+	if err != nil {
+		return nil, err
+	}
+	return decodeResponseFileEntry(raw)
+}
+
+type deleteFilesBody struct {
+	FileIDs   []int `json:"fileIds"`
+	FolderIDs []int `json:"folderIds"`
+}
+
+// DeleteFiles permanently deletes files by numeric id (Documents module).
+func (c *Client) DeleteFiles(ctx context.Context, fileIDs []int) error {
+	if len(fileIDs) == 0 {
+		return fmt.Errorf("no file ids to delete")
+	}
+	body := deleteFilesBody{FileIDs: fileIDs, FolderIDs: nil}
+	_, err := c.putJSON(ctx, "/api/2.0/files/fileops/delete.json", body)
+	if err != nil {
+		_, err = c.putJSON(ctx, "/api/2.0/files/fileops/delete", body)
+	}
+	return err
+}
+
+// DownloadFile streams file bytes from the file's viewUrl using the same auth
+// as API calls. Writes into dst.
+func (c *Client) DownloadFile(ctx context.Context, fileID string, dst io.Writer) (int64, error) {
+	f, err := c.GetFile(ctx, fileID)
+	if err != nil {
+		return 0, err
+	}
+	if f.ViewURL == nil || *f.ViewURL == "" {
+		return 0, fmt.Errorf("file %s has no viewUrl", fileID)
+	}
+	downloadURL := c.resolveAPIURL(*f.ViewURL)
+	auth, err := c.authHeader()
+	if err != nil {
+		return 0, err
+	}
+	req, err := http.NewRequestWithContext(ctx, http.MethodGet, downloadURL, nil)
+	if err != nil {
+		return 0, err
+	}
+	req.Header.Set("Authorization", auth)
+	resp, err := c.client.Do(req)
+	if err != nil {
+		return 0, err
+	}
+	defer resp.Body.Close()
+	if resp.StatusCode >= 400 {
+		b, _ := io.ReadAll(io.LimitReader(resp.Body, 512))
+		return 0, fmt.Errorf("GET viewUrl: %d %s", resp.StatusCode, truncate(string(b), 400))
+	}
+	n, err := io.Copy(dst, resp.Body)
+	return n, err
+}
+
+func (c *Client) resolveAPIURL(ref string) string {
+	ref = strings.TrimSpace(ref)
+	if ref == "" {
+		return ref
+	}
+	if strings.HasPrefix(ref, "http://") || strings.HasPrefix(ref, "https://") {
+		return ref
+	}
+	base := c.baseURL()
+	if strings.HasPrefix(ref, "/") {
+		u, err := url.Parse(base)
+		if err != nil {
+			return base + ref
+		}
+		u.Path = ""
+		u.RawQuery = ""
+		u.Fragment = ""
+		return strings.TrimRight(u.String(), "/") + ref
+	}
+	return base + "/" + strings.TrimPrefix(ref, "/")
+}
+
+func decodeResponseFileEntry(raw json.RawMessage) (*FileEntry, error) {
+	var env struct {
+		Response *FileEntry `json:"response"`
+	}
+	if err := json.Unmarshal(raw, &env); err != nil {
+		return nil, err
+	}
+	if env.Response == nil {
+		return nil, fmt.Errorf("empty file response")
+	}
+	return env.Response, nil
+}
+
+// FileEntryNumericID returns the file id as int64, or 0 if missing/invalid.
+func FileEntryNumericID(f *FileEntry) int64 {
+	if f == nil || f.ID == nil {
+		return 0
+	}
+	n, err := f.ID.Int64()
+	if err != nil {
+		return 0
+	}
+	return n
+}
+
+// FileEntryTitle returns the title or empty string.
+func FileEntryTitle(f *FileEntry) string {
+	if f == nil || f.Title == nil {
+		return ""
+	}
+	return *f.Title
+}
+
+// SafeLocalFileName sanitizes a server title for use as a local filename.
+func SafeLocalFileName(title string) string {
+	title = strings.TrimSpace(title)
+	if title == "" {
+		return "download"
+	}
+	base := path.Base(title)
+	base = strings.ReplaceAll(base, "\x00", "")
+	if base == "." || base == "/" {
+		return "download"
+	}
+	return base
+}

files_integration_test.go

@@ -0,0 +1,175 @@
+//go:build integration
+
+package onlyoffice
+
+import (
+	"bytes"
+	"context"
+	"os"
+	"path/filepath"
+	"strconv"
+	"testing"
+	"time"
+)
+
+// TestIntegrationProjectFilesFlow creates a throwaway project, uploads a file
+// into its Documents folder, lists, downloads, renames, deletes, then removes
+// the project. Destructive — only run against instances you own.
+func TestIntegrationProjectFilesFlow(t *testing.T) {
+	c := liveClient(t)
+	t.Cleanup(func() { cleanupTestProjects(t, c) })
+
+	suffix := time.Now().UTC().Format("20060102-150405")
+	title := testProjectPrefix + "files-" + suffix
+	project, err := c.CreateProject(NewProjectRequest{
+		Title:       title,
+		Description: "go-onlyoffice project files integration",
+	})
+	if err != nil {
+		t.Fatalf("CreateProject: %v", err)
+	}
+	if project.ID == nil {
+		t.Fatal("created project without id")
+	}
+	pid := strconv.Itoa(*project.ID)
+	ctx := context.Background()
+
+	tmpDir := t.TempDir()
+	localPath := filepath.Join(tmpDir, "hello.txt")
+	content := []byte("integration project file " + suffix + "\n")
+	if err := os.WriteFile(localPath, content, 0o600); err != nil {
+		t.Fatal(err)
+	}
+
+	entry, err := c.UploadProjectFile(ctx, pid, localPath)
+	if err != nil {
+		t.Fatalf("UploadProjectFile: %v", err)
+	}
+	if entry == nil || entry.ID == nil {
+		t.Fatalf("upload returned no file: %+v", entry)
+	}
+	fileID := entry.ID.String()
+
+	pf, err := c.GetProjectFiles(ctx, pid)
+	if err != nil {
+		t.Fatalf("GetProjectFiles: %v", err)
+	}
+	found := false
+	for _, f := range pf.Files {
+		if f != nil && f.ID != nil && f.ID.String() == fileID {
+			found = true
+			break
+		}
+	}
+	if !found {
+		t.Logf("uploaded file id=%s not in project files list (may still be ok); folders=%d files=%d",
+			fileID, len(pf.Folders), len(pf.Files))
+	}
+
+	var buf bytes.Buffer
+	n, err := c.DownloadFile(ctx, fileID, &buf)
+	if err != nil {
+		t.Fatalf("DownloadFile: %v", err)
+	}
+	if n != int64(len(content)) || !bytes.Equal(buf.Bytes(), content) {
+		t.Fatalf("download mismatch: got %d bytes %q want %d bytes", n, buf.String(), len(content))
+	}
+
+	newTitle := "renamed-" + suffix + ".txt"
+	renamed, err := c.RenameFile(ctx, fileID, newTitle)
+	if err != nil {
+		t.Fatalf("RenameFile: %v", err)
+	}
+	if renamed == nil || renamed.Title == nil || *renamed.Title != newTitle {
+		t.Fatalf("rename result: %+v", renamed)
+	}
+
+	nid := int(FileEntryNumericID(entry))
+	if nid == 0 {
+		t.Fatal("file id 0 for delete")
+	}
+	if err := c.DeleteFiles(ctx, []int{nid}); err != nil {
+		t.Fatalf("DeleteFiles: %v", err)
+	}
+}
+
+func TestIntegrationTaskFilesFlow(t *testing.T) {
+	c := liveClient(t)
+	t.Cleanup(func() { cleanupTestProjects(t, c) })
+
+	suffix := time.Now().UTC().Format("20060102-150405")
+	title := testProjectPrefix + "taskfiles-" + suffix
+	project, err := c.CreateProject(NewProjectRequest{
+		Title:       title,
+		Description: "go-onlyoffice task files integration",
+	})
+	if err != nil {
+		t.Fatalf("CreateProject: %v", err)
+	}
+	if project.ID == nil {
+		t.Fatal("created project without id")
+	}
+
+	start := Time(time.Now().AddDate(0, 0, -1))
+	deadline := Time(time.Now().AddDate(0, 0, 1))
+	task, err := c.CreateProjectTask(NewProjectTaskRequest{
+		ProjectId:   *project.ID,
+		Title:       "task for file attach " + suffix,
+		Description: "integration",
+		StartDate:   start,
+		Deadline:    deadline,
+		Priority:    int(TaskPriorityNormal),
+	})
+	if err != nil {
+		t.Fatalf("CreateProjectTask: %v", err)
+	}
+	if task.ID == nil {
+		t.Fatal("task without id")
+	}
+	tid := strconv.Itoa(*task.ID)
+	ctx := context.Background()
+
+	tmpDir := t.TempDir()
+	localPath := filepath.Join(tmpDir, "attach.txt")
+	content := []byte("task attachment " + suffix + "\n")
+	if err := os.WriteFile(localPath, content, 0o600); err != nil {
+		t.Fatal(err)
+	}
+
+	up, err := c.UploadTaskFile(ctx, tid, localPath)
+	if err != nil {
+		t.Fatalf("UploadTaskFile: %v", err)
+	}
+	if up == nil || up.ID == nil {
+		t.Fatalf("upload: %+v", up)
+	}
+	fileID := up.ID.String()
+
+	list, err := c.GetTaskFiles(ctx, tid)
+	if err != nil {
+		t.Fatalf("GetTaskFiles: %v", err)
+	}
+	found := false
+	for _, f := range list {
+		if f != nil && f.ID != nil && f.ID.String() == fileID {
+			found = true
+			break
+		}
+	}
+	if !found {
+		t.Fatalf("uploaded file not in GetTaskFiles: %#v", list)
+	}
+
+	if err := c.DetachTaskFile(ctx, tid, fileID); err != nil {
+		t.Fatalf("DetachTaskFile: %v", err)
+	}
+	list2, err := c.GetTaskFiles(ctx, tid)
+	if err != nil {
+		t.Fatalf("GetTaskFiles after detach: %v", err)
+	}
+	for _, f := range list2 {
+		if f != nil && f.ID != nil && f.ID.String() == fileID {
+			t.Fatalf("file still attached after detach: %v", fileID)
+		}
+	}
+}

files_test.go

@@ -0,0 +1,70 @@
+package onlyoffice
+
+import (
+	"encoding/json"
+	"os"
+	"testing"
+)
+
+func TestDecodeProjectFilesEnvelope(t *testing.T) {
+	raw, err := os.ReadFile("testdata/project_files_response.json")
+	if err != nil {
+		t.Fatal(err)
+	}
+	resp, err := responseField(json.RawMessage(raw), "response")
+	if err != nil {
+		t.Fatal(err)
+	}
+	var pf ProjectFilesResponse
+	if err := json.Unmarshal(resp, &pf); err != nil {
+		t.Fatal(err)
+	}
+	if len(pf.Folders) != 1 || pf.Folders[0].Title == nil || *pf.Folders[0].Title != "Subfolder" {
+		t.Fatalf("folders: %+v", pf.Folders)
+	}
+	if len(pf.Files) != 1 || pf.Files[0].Title == nil || *pf.Files[0].Title != "readme.txt" {
+		t.Fatalf("files: %+v", pf.Files)
+	}
+	if pf.Files[0].ID == nil || pf.Files[0].ID.String() != "100" {
+		t.Fatalf("file id: %v", pf.Files[0].ID)
+	}
+}
+
+func TestDecodeTaskFilesEnvelope(t *testing.T) {
+	raw, err := os.ReadFile("testdata/task_files_response.json")
+	if err != nil {
+		t.Fatal(err)
+	}
+	resp, err := responseField(json.RawMessage(raw), "response")
+	if err != nil {
+		t.Fatal(err)
+	}
+	var list []*FileEntry
+	if err := json.Unmarshal(resp, &list); err != nil {
+		t.Fatal(err)
+	}
+	if len(list) != 1 || list[0].Title == nil || *list[0].Title != "attach.pdf" {
+		t.Fatalf("list: %+v", list)
+	}
+}
+
+func TestProjectIDFromTaskMap(t *testing.T) {
+	m := map[string]any{
+		"projectOwner": map[string]any{"id": float64(33)},
+	}
+	if got := projectIDFromTaskMap(m); got != "33" {
+		t.Fatalf("got %q", got)
+	}
+	if projectIDFromTaskMap(nil) != "" {
+		t.Fatal("expected empty")
+	}
+}
+
+func TestSafeLocalFileName(t *testing.T) {
+	if got := SafeLocalFileName("  foo/bar.txt  "); got != "bar.txt" {
+		t.Fatalf("got %q", got)
+	}
+	if got := SafeLocalFileName(""); got != "download" {
+		t.Fatalf("got %q", got)
+	}
+}

go.mod

@@ -1,8 +1,45 @@
 module github.com/eslider/go-onlyoffice
 
-go 1.22.2
+go 1.25.0
 
 require (
+	github.com/JohannesKaufmann/html-to-markdown/v2 v2.5.2
+	github.com/charmbracelet/bubbles v0.18.0
+	github.com/charmbracelet/bubbletea v0.25.0
+	github.com/charmbracelet/glamour v0.8.0
+	github.com/charmbracelet/lipgloss v0.12.1
+	github.com/eslider/go-xls/v2 v2.1.0
 	github.com/google/go-querystring v1.2.0
 	github.com/joho/godotenv v1.5.1
+	github.com/spf13/cobra v1.10.2
+)
+
+require (
+	github.com/JohannesKaufmann/dom v0.3.1 // indirect
+	github.com/alecthomas/chroma/v2 v2.14.0 // indirect
+	github.com/aymanbagabas/go-osc52/v2 v2.0.1 // indirect
+	github.com/aymerick/douceur v0.2.0 // indirect
+	github.com/charmbracelet/x/ansi v0.1.4 // indirect
+	github.com/containerd/console v1.0.4-0.20230313162750-1ae8d489ac81 // indirect
+	github.com/dlclark/regexp2 v1.11.0 // indirect
+	github.com/gorilla/css v1.0.1 // indirect
+	github.com/inconshreveable/mousetrap v1.1.0 // indirect
+	github.com/lucasb-eyer/go-colorful v1.4.0 // indirect
+	github.com/mattn/go-isatty v0.0.22 // indirect
+	github.com/mattn/go-localereader v0.0.1 // indirect
+	github.com/mattn/go-runewidth v0.0.15 // indirect
+	github.com/microcosm-cc/bluemonday v1.0.27 // indirect
+	github.com/muesli/ansi v0.0.0-20211018074035-2e021307bc4b // indirect
+	github.com/muesli/cancelreader v0.2.2 // indirect
+	github.com/muesli/reflow v0.3.0 // indirect
+	github.com/muesli/termenv v0.16.0 // indirect
+	github.com/rivo/uniseg v0.4.7 // indirect
+	github.com/spf13/pflag v1.0.9 // indirect
+	github.com/yuin/goldmark v1.8.2 // indirect
+	github.com/yuin/goldmark-emoji v1.0.3 // indirect
+	golang.org/x/net v0.55.0 // indirect
+	golang.org/x/sync v0.20.0 // indirect
+	golang.org/x/sys v0.45.0 // indirect
+	golang.org/x/term v0.43.0 // indirect
+	golang.org/x/text v0.37.0 // indirect
 )

go.sum

@@ -1,6 +1,99 @@
+github.com/JohannesKaufmann/dom v0.3.1 h1:J16l9JAHWgkFPR3VIPbQ1gvS0cWab6laK1q7PFL3qh0=
+github.com/JohannesKaufmann/dom v0.3.1/go.mod h1:BZPkf8ZeYrBgABjwJn9iiKt8aiCtkxpHkevms+Yp2DE=
+github.com/JohannesKaufmann/html-to-markdown/v2 v2.5.2 h1:XFJZFWESIWlUEHHjzBuv8RvrtCWnSGlimEX17ysSDb8=
+github.com/JohannesKaufmann/html-to-markdown/v2 v2.5.2/go.mod h1:BHWO8lJzttJLqwuV8Rb1B3OG2OSzLbssZDI1FRg2eAA=
+github.com/alecthomas/assert/v2 v2.7.0 h1:QtqSACNS3tF7oasA8CU6A6sXZSBDqnm7RfpLl9bZqbE=
+github.com/alecthomas/assert/v2 v2.7.0/go.mod h1:Bze95FyfUr7x34QZrjL+XP+0qgp/zg8yS+TtBj1WA3k=
+github.com/alecthomas/chroma/v2 v2.14.0 h1:R3+wzpnUArGcQz7fCETQBzO5n9IMNi13iIs46aU4V9E=
+github.com/alecthomas/chroma/v2 v2.14.0/go.mod h1:QolEbTfmUHIMVpBqxeDnNBj2uoeI4EbYP4i6n68SG4I=
+github.com/alecthomas/repr v0.4.0 h1:GhI2A8MACjfegCPVq9f1FLvIBS+DrQ2KQBFZP1iFzXc=
+github.com/alecthomas/repr v0.4.0/go.mod h1:Fr0507jx4eOXV7AlPV6AVZLYrLIuIeSOWtW57eE/O/4=
+github.com/aymanbagabas/go-osc52/v2 v2.0.1 h1:HwpRHbFMcZLEVr42D4p7XBqjyuxQH5SMiErDT4WkJ2k=
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http.go

@@ -0,0 +1,319 @@
+package onlyoffice
+
+// Transport-layer helpers used by the untyped domain methods (CRM, calendar,
+// tasks, files). Authentication lives in auth.go; the typed Request/Query
+// abstraction lives in request.go. These helpers deliberately share the
+// `*Client` state with the typed path so token refresh, base URL, and
+// self-id caching are handled once.
+
+import (
+	"bytes"
+	"context"
+	"encoding/json"
+	"fmt"
+	"io"
+	"mime/multipart"
+	"net/http"
+	"net/url"
+	"os"
+	"path/filepath"
+	"strings"
+)
+
+// baseURL returns the configured base URL without trailing slash.
+func (c *Client) baseURL() string {
+	return strings.TrimRight(c.credentials.Url, "/")
+}
+
+// truncate crops s to n runes, appending "..." when truncated. Used in error
+// messages to keep OnlyOffice HTML payloads readable.
+func truncate(s string, n int) string {
+	if len(s) <= n {
+		return s
+	}
+	return s[:n] + "..."
+}
+
+// responseField extracts a top-level JSON key (for example "response") from a
+// raw OnlyOffice envelope. Returns an error when the key is missing.
+func responseField(raw json.RawMessage, key string) (json.RawMessage, error) {
+	var m map[string]json.RawMessage
+	if err := json.Unmarshal(raw, &m); err != nil {
+		return nil, err
+	}
+	v, ok := m[key]
+	if !ok {
+		return nil, fmt.Errorf("response missing %q", key)
+	}
+	return v, nil
+}
+
+// ResponseArray executes a GET and returns the "response" field as []map.
+// Returns (nil, nil) when the field is JSON null.
+func (c *Client) ResponseArray(ctx context.Context, path string) ([]map[string]any, error) {
+	raw, err := c.getJSON(ctx, path)
+	if err != nil {
+		return nil, err
+	}
+	resp, err := responseField(raw, "response")
+	if err != nil {
+		return nil, err
+	}
+	if string(resp) == "null" {
+		return nil, nil
+	}
+	var list []map[string]any
+	if err := json.Unmarshal(resp, &list); err != nil {
+		return nil, err
+	}
+	return list, nil
+}
+
+// ResponseObject executes a GET and decodes the "response" field into a map.
+// Returns (nil, nil) when the field is JSON null or absent. Companion to
+// ResponseArray — factored out to eliminate the ~15 identical decode blocks
+// in crm.go / tasks.go / calendar.go.
+func (c *Client) ResponseObject(ctx context.Context, path string) (map[string]any, error) {
+	raw, err := c.getJSON(ctx, path)
+	if err != nil {
+		return nil, err
+	}
+	return unmarshalResponseObject(raw)
+}
+
+// postFormObject issues an authenticated POST (form-encoded) and decodes the
+// "response" field into a map.
+func (c *Client) postFormObject(ctx context.Context, path string, fields url.Values) (map[string]any, error) {
+	raw, err := c.postForm(ctx, path, fields)
+	if err != nil {
+		return nil, err
+	}
+	return unmarshalResponseObject(raw)
+}
+
+// putFormObject issues an authenticated PUT (form-encoded) and decodes the
+// "response" field into a map.
+func (c *Client) putFormObject(ctx context.Context, path string, fields url.Values) (map[string]any, error) {
+	raw, err := c.putForm(ctx, path, fields)
+	if err != nil {
+		return nil, err
+	}
+	return unmarshalResponseObject(raw)
+}
+
+// deleteObject issues an authenticated DELETE and decodes the "response"
+// field into a map.
+func (c *Client) deleteObject(ctx context.Context, path string) (map[string]any, error) {
+	raw, err := c.deleteReq(ctx, path)
+	if err != nil {
+		return nil, err
+	}
+	return unmarshalResponseObject(raw)
+}
+
+// unmarshalResponseObject extracts the "response" field from a raw OnlyOffice
+// envelope and decodes it into map[string]any. Returns (nil, nil) for a null
+// response and (nil, err) when the field is missing or malformed.
+func unmarshalResponseObject(raw json.RawMessage) (map[string]any, error) {
+	resp, err := responseField(raw, "response")
+	if err != nil {
+		return nil, err
+	}
+	if len(resp) == 0 || string(resp) == "null" {
+		return nil, nil
+	}
+	var out map[string]any
+	if err := json.Unmarshal(resp, &out); err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
+// getJSON issues an authenticated GET and returns the raw response body.
+func (c *Client) getJSON(ctx context.Context, path string) (json.RawMessage, error) {
+	auth, err := c.authHeader()
+	if err != nil {
+		return nil, err
+	}
+	req, err := http.NewRequestWithContext(ctx, http.MethodGet, c.baseURL()+path, nil)
+	if err != nil {
+		return nil, err
+	}
+	req.Header.Set("Authorization", auth)
+	req.Header.Set("Accept", "application/json")
+	resp, err := c.client.Do(req)
+	if err != nil {
+		return nil, err
+	}
+	defer resp.Body.Close()
+	raw, err := io.ReadAll(resp.Body)
+	if err != nil {
+		return nil, err
+	}
+	if resp.StatusCode >= 400 {
+		return nil, fmt.Errorf("GET %s: %d %s", path, resp.StatusCode, truncate(string(raw), 400))
+	}
+	return raw, nil
+}
+
+// postForm issues an authenticated POST with application/x-www-form-urlencoded body.
+func (c *Client) postForm(ctx context.Context, path string, fields url.Values) (json.RawMessage, error) {
+	return c.formRequest(ctx, http.MethodPost, path, fields)
+}
+
+// putForm issues an authenticated PUT with application/x-www-form-urlencoded body.
+func (c *Client) putForm(ctx context.Context, path string, fields url.Values) (json.RawMessage, error) {
+	return c.formRequest(ctx, http.MethodPut, path, fields)
+}
+
+func (c *Client) formRequest(ctx context.Context, method, path string, fields url.Values) (json.RawMessage, error) {
+	auth, err := c.authHeader()
+	if err != nil {
+		return nil, err
+	}
+	req, err := http.NewRequestWithContext(ctx, method, c.baseURL()+path, strings.NewReader(fields.Encode()))
+	if err != nil {
+		return nil, err
+	}
+	req.Header.Set("Authorization", auth)
+	req.Header.Set("Content-Type", "application/x-www-form-urlencoded")
+	req.Header.Set("Accept", "application/json")
+	resp, err := c.client.Do(req)
+	if err != nil {
+		return nil, err
+	}
+	defer resp.Body.Close()
+	raw, err := io.ReadAll(resp.Body)
+	if err != nil {
+		return nil, err
+	}
+	if resp.StatusCode >= 400 {
+		return nil, fmt.Errorf("%s form %s: %d %s", method, path, resp.StatusCode, truncate(string(raw), 400))
+	}
+	return raw, nil
+}
+
+// deleteReq issues an authenticated DELETE.
+func (c *Client) deleteReq(ctx context.Context, path string) (json.RawMessage, error) {
+	auth, err := c.authHeader()
+	if err != nil {
+		return nil, err
+	}
+	req, err := http.NewRequestWithContext(ctx, http.MethodDelete, c.baseURL()+path, nil)
+	if err != nil {
+		return nil, err
+	}
+	req.Header.Set("Authorization", auth)
+	req.Header.Set("Accept", "application/json")
+	resp, err := c.client.Do(req)
+	if err != nil {
+		return nil, err
+	}
+	defer resp.Body.Close()
+	raw, err := io.ReadAll(resp.Body)
+	if err != nil {
+		return nil, err
+	}
+	if resp.StatusCode >= 400 {
+		return nil, fmt.Errorf("DELETE %s: %d %s", path, resp.StatusCode, truncate(string(raw), 400))
+	}
+	return raw, nil
+}
+
+// putJSONObject issues an authenticated PUT with JSON body and decodes response.
+func (c *Client) putJSONObject(ctx context.Context, path string, body any) (map[string]any, error) {
+	raw, err := c.putJSON(ctx, path, body)
+	if err != nil {
+		return nil, err
+	}
+	return unmarshalResponseObject(raw)
+}
+
+// putJSON issues an authenticated PUT with application/json body.
+func (c *Client) putJSON(ctx context.Context, path string, body any) (json.RawMessage, error) {
+	auth, err := c.authHeader()
+	if err != nil {
+		return nil, err
+	}
+	var rdr io.Reader
+	switch b := body.(type) {
+	case nil:
+		rdr = strings.NewReader("{}")
+	case []byte:
+		rdr = bytes.NewReader(b)
+	case string:
+		rdr = strings.NewReader(b)
+	default:
+		buf, err := json.Marshal(b)
+		if err != nil {
+			return nil, err
+		}
+		rdr = bytes.NewReader(buf)
+	}
+	req, err := http.NewRequestWithContext(ctx, http.MethodPut, c.baseURL()+path, rdr)
+	if err != nil {
+		return nil, err
+	}
+	req.Header.Set("Authorization", auth)
+	req.Header.Set("Content-Type", "application/json")
+	req.Header.Set("Accept", "application/json")
+	resp, err := c.client.Do(req)
+	if err != nil {
+		return nil, err
+	}
+	defer resp.Body.Close()
+	raw, err := io.ReadAll(resp.Body)
+	if err != nil {
+		return nil, err
+	}
+	if resp.StatusCode >= 400 {
+		return nil, fmt.Errorf("PUT JSON %s: %d %s", path, resp.StatusCode, truncate(string(raw), 400))
+	}
+	return raw, nil
+}
+
+// uploadMultipart posts a single file to path under the given form field name.
+func (c *Client) uploadMultipart(ctx context.Context, path, fieldName, filePath string) (json.RawMessage, error) {
+	auth, err := c.authHeader()
+	if err != nil {
+		return nil, err
+	}
+	f, err := os.Open(filePath)
+	if err != nil {
+		return nil, err
+	}
+	defer f.Close()
+
+	var buf bytes.Buffer
+	mw := multipart.NewWriter(&buf)
+	part, err := mw.CreateFormFile(fieldName, filepath.Base(filePath))
+	if err != nil {
+		return nil, err
+	}
+	if _, err := io.Copy(part, f); err != nil {
+		return nil, err
+	}
+	if err := mw.Close(); err != nil {
+		return nil, err
+	}
+	req, err := http.NewRequestWithContext(ctx, http.MethodPost, c.baseURL()+path, &buf)
+	if err != nil {
+		return nil, err
+	}
+	req.Header.Set("Authorization", auth)
+	req.Header.Set("Content-Type", mw.FormDataContentType())
+	req.Header.Set("Accept", "application/json")
+	resp, err := c.client.Do(req)
+	if err != nil {
+		return nil, err
+	}
+	defer resp.Body.Close()
+	raw, err := io.ReadAll(resp.Body)
+	if err != nil {
+		return nil, err
+	}
+	if resp.StatusCode >= 400 {
+		return nil, fmt.Errorf("upload %s: %d %s", path, resp.StatusCode, truncate(string(raw), 400))
+	}
+	return raw, nil
+}

mails.go

@@ -0,0 +1,238 @@
+package onlyoffice
+
+// OnlyOffice Workspace Mail addon (/addons/mail) — list, read, and remove
+// messages for the mailbox bound to the authenticated portal user.
+
+import (
+	"context"
+	"fmt"
+	"net/mail"
+	"net/url"
+	"strconv"
+	"strings"
+)
+
+// Mail folder IDs in OnlyOffice Workspace (standard mailboxes).
+const (
+	MailFolderInbox  = 1
+	MailFolderSent   = 2
+	MailFolderDrafts = 3
+	MailFolderTrash  = 4
+	MailFolderSpam   = 5
+)
+
+// MailMessagesFilter selects messages from GET /api/2.0/mail/messages.
+// The API returns at most 25 messages per request; ListMailMessages paginates
+// automatically when Count exceeds that or StartIndex is non-zero.
+type MailMessagesFilter struct {
+	Folder     int // folder id (default inbox when zero)
+	Count      int // max messages to return (0 → one API page)
+	StartIndex int // skip this many messages before collecting Count
+}
+
+const mailMessagesPageSize = 25
+
+// ListMailAccounts returns mailboxes linked to the current user.
+func (c *Client) ListMailAccounts(ctx context.Context) ([]map[string]any, error) {
+	return c.ResponseArray(ctx, "/api/2.0/mail/accounts")
+}
+
+// ListMailFolders returns folder counters (id, unread, total_count, …).
+func (c *Client) ListMailFolders(ctx context.Context) ([]map[string]any, error) {
+	return c.ResponseArray(ctx, "/api/2.0/mail/folders")
+}
+
+// ListMailMessages returns messages matching the filter.
+func (c *Client) ListMailMessages(ctx context.Context, f MailMessagesFilter) ([]map[string]any, error) {
+	want := f.Count
+	if want <= 0 {
+		want = mailMessagesPageSize
+	}
+	if want <= mailMessagesPageSize && f.StartIndex == 0 {
+		return c.ResponseArray(ctx, mailMessagesPath(f, 1, want))
+	}
+
+	var out []map[string]any
+	toSkip := f.StartIndex
+	page := 1
+	for len(out) < want {
+		chunk, err := c.ResponseArray(ctx, mailMessagesPath(f, page, mailMessagesPageSize))
+		if err != nil {
+			return nil, err
+		}
+		if len(chunk) == 0 {
+			break
+		}
+		if toSkip > 0 {
+			if toSkip >= len(chunk) {
+				toSkip -= len(chunk)
+				page++
+				continue
+			}
+			chunk = chunk[toSkip:]
+			toSkip = 0
+		}
+		pageLen := len(chunk)
+		need := want - len(out)
+		if len(chunk) > need {
+			chunk = chunk[:need]
+		}
+		out = append(out, chunk...)
+		if pageLen < mailMessagesPageSize {
+			break
+		}
+		page++
+	}
+	return out, nil
+}
+
+// GetMailMessage returns one message by numeric id.
+func (c *Client) GetMailMessage(ctx context.Context, messageID string) (map[string]any, error) {
+	id := strings.TrimSpace(messageID)
+	if id == "" {
+		return nil, fmt.Errorf("GetMailMessage: message id is required")
+	}
+	return c.ResponseObject(ctx, "/api/2.0/mail/messages/"+url.PathEscape(id))
+}
+
+// RemoveMailMessages deletes messages by id (PUT /api/2.0/mail/messages/remove).
+func (c *Client) RemoveMailMessages(ctx context.Context, ids ...int) (map[string]any, error) {
+	if len(ids) == 0 {
+		return nil, fmt.Errorf("RemoveMailMessages: at least one id is required")
+	}
+	return c.putJSONObject(ctx, "/api/2.0/mail/messages/remove", map[string]any{"ids": ids})
+}
+
+// ResolveMailFolder maps a CLI folder name or numeric string to a folder id.
+// Empty input defaults to inbox (1).
+func ResolveMailFolder(name string) (int, error) {
+	s := strings.TrimSpace(strings.ToLower(name))
+	if s == "" {
+		return MailFolderInbox, nil
+	}
+	if n, err := strconv.Atoi(s); err == nil && n > 0 {
+		return n, nil
+	}
+	switch s {
+	case "inbox":
+		return MailFolderInbox, nil
+	case "sent":
+		return MailFolderSent, nil
+	case "drafts", "draft":
+		return MailFolderDrafts, nil
+	case "trash":
+		return MailFolderTrash, nil
+	case "spam":
+		return MailFolderSpam, nil
+	default:
+		return 0, fmt.Errorf("unknown mail folder %q (use inbox|sent|drafts|trash|spam or numeric id)", name)
+	}
+}
+
+func mailMessagesPath(f MailMessagesFilter, page, count int) string {
+	q := url.Values{}
+	folder := f.Folder
+	if folder <= 0 {
+		folder = MailFolderInbox
+	}
+	q.Set("folder", strconv.Itoa(folder))
+	if count > 0 {
+		q.Set("count", strconv.Itoa(count))
+	}
+	if page > 1 {
+		q.Set("page", strconv.Itoa(page))
+	}
+	return "/api/2.0/mail/messages?" + q.Encode()
+}
+
+// ParseMailAddress splits a RFC 5322 mailbox string into display name and email.
+// Examples:
+//   - `"LinkedIn" <a@b.com>` → name LinkedIn, address a@b.com
+//   - `eslider@gmail.com` → address only
+func ParseMailAddress(raw string) (name, address string) {
+	raw = strings.TrimSpace(raw)
+	if raw == "" {
+		return "", ""
+	}
+	a, err := mail.ParseAddress(raw)
+	if err != nil {
+		return "", raw
+	}
+	return a.Name, a.Address
+}
+
+// MailMessagesAsTableRows converts list results for printTable.
+func MailMessagesAsTableRows(msgs []map[string]any) []map[string]any {
+	rows := make([]map[string]any, len(msgs))
+	for i, m := range msgs {
+		fromName, fromAddress := ParseMailAddress(stringFromMap(m, "from"))
+		rows[i] = map[string]any{
+			"id":          idFromMap(m, "id"),
+			"subject":     stringFromMap(m, "subject"),
+			"fromName":    fromName,
+			"fromAddress": fromAddress,
+			"date":        stringFromMap(m, "date"),
+			"folder":      idFromMap(m, "folder"),
+			"size":        idFromMap(m, "size"),
+			"isNew":       boolFromMap(m, "isNew"),
+		}
+	}
+	return rows
+}
+
+// MailAccountsAsTableRows converts account list results for printTable.
+func MailAccountsAsTableRows(accounts []map[string]any) []map[string]any {
+	rows := make([]map[string]any, len(accounts))
+	for i, a := range accounts {
+		rows[i] = map[string]any{
+			"mailboxId": idFromMap(a, "mailboxId"),
+			"email":     stringFromMap(a, "email"),
+			"enabled":   boolFromMap(a, "enabled"),
+			"isDefault": boolFromMap(a, "isDefault"),
+		}
+	}
+	return rows
+}
+
+// MailFoldersAsTableRows converts folder list results for printTable.
+func MailFoldersAsTableRows(folders []map[string]any) []map[string]any {
+	rows := make([]map[string]any, len(folders))
+	for i, f := range folders {
+		rows[i] = map[string]any{
+			"id":            idFromMap(f, "id"),
+			"unread":        idFromMap(f, "unread"),
+			"total_count":   idFromMap(f, "total_count"),
+			"time_modified": stringFromMap(f, "time_modified"),
+		}
+	}
+	return rows
+}
+
+func idFromMap(m map[string]any, key string) string {
+	switch v := m[key].(type) {
+	case float64:
+		return strconv.FormatInt(int64(v), 10)
+	case int:
+		return strconv.Itoa(v)
+	case string:
+		return v
+	default:
+		return fmt.Sprint(m[key])
+	}
+}
+
+func stringFromMap(m map[string]any, key string) string {
+	if s, ok := m[key].(string); ok {
+		return s
+	}
+	return fmt.Sprint(m[key])
+}
+
+func boolFromMap(m map[string]any, key string) string {
+	switch v := m[key].(type) {
+	case bool:
+		return strconv.FormatBool(v)
+	default:
+		return fmt.Sprint(m[key])
+	}
+}

mails_integration_test.go

@@ -0,0 +1,41 @@
+//go:build integration
+
+package onlyoffice
+
+import (
+	"context"
+	"testing"
+)
+
+func TestIntegrationMailList(t *testing.T) {
+	creds := GetEnvironmentCredentials()
+	if creds.Url == "" || creds.User == "" || creds.Password == "" {
+		t.Skip("ONLYOFFICE_URL/USER/PASS not set")
+	}
+	c := NewClient(creds)
+	ctx := context.Background()
+	if err := c.AuthenticateContext(ctx); err != nil {
+		t.Fatalf("auth: %v", err)
+	}
+	accounts, err := c.ListMailAccounts(ctx)
+	if err != nil {
+		t.Fatalf("ListMailAccounts: %v", err)
+	}
+	t.Logf("accounts=%d", len(accounts))
+
+	msgs, err := c.ListMailMessages(ctx, MailMessagesFilter{Folder: MailFolderInbox, Count: 3})
+	if err != nil {
+		t.Fatalf("ListMailMessages: %v", err)
+	}
+	if len(msgs) == 0 {
+		t.Skip("no inbox messages to inspect")
+	}
+	id := idFromMap(msgs[0], "id")
+	msg, err := c.GetMailMessage(ctx, id)
+	if err != nil {
+		t.Fatalf("GetMailMessage(%s): %v", id, err)
+	}
+	if msg["subject"] == nil {
+		t.Fatalf("message missing subject: %+v", msg)
+	}
+}

mails_test.go

@@ -0,0 +1,72 @@
+package onlyoffice
+
+import "testing"
+
+func TestResolveMailFolder(t *testing.T) {
+	tests := []struct {
+		in   string
+		want int
+		err  bool
+	}{
+		{"", MailFolderInbox, false},
+		{"inbox", MailFolderInbox, false},
+		{"SENT", MailFolderSent, false},
+		{"4", MailFolderTrash, false},
+		{"nope", 0, true},
+	}
+	for _, tc := range tests {
+		got, err := ResolveMailFolder(tc.in)
+		if tc.err {
+			if err == nil {
+				t.Fatalf("%q: expected error", tc.in)
+			}
+			continue
+		}
+		if err != nil || got != tc.want {
+			t.Fatalf("%q: got %d err=%v", tc.in, got, err)
+		}
+	}
+}
+
+func TestMailMessagesPath(t *testing.T) {
+	path := mailMessagesPath(MailMessagesFilter{Folder: 1}, 1, 10)
+	if path != "/api/2.0/mail/messages?count=10&folder=1" {
+		t.Fatalf("page 1: got %q", path)
+	}
+	path = mailMessagesPath(MailMessagesFilter{Folder: 1}, 3, 25)
+	if path != "/api/2.0/mail/messages?count=25&folder=1&page=3" {
+		t.Fatalf("page 3: got %q", path)
+	}
+}
+
+func TestParseMailAddress(t *testing.T) {
+	tests := []struct {
+		raw          string
+		wantName     string
+		wantAddress  string
+	}{
+		{`"LinkedIn Jobbenachrichtigungen" <jobalerts-noreply@linkedin.com>`, "LinkedIn Jobbenachrichtigungen", "jobalerts-noreply@linkedin.com"},
+		{`"Bitfinex" <no-reply@bitfinex.com>`, "Bitfinex", "no-reply@bitfinex.com"},
+		{"eslider@gmail.com", "", "eslider@gmail.com"},
+		{`"Glassdoor-Jobs" <noreply@glassdoor.com>`, "Glassdoor-Jobs", "noreply@glassdoor.com"},
+		{"", "", ""},
+	}
+	for _, tc := range tests {
+		name, addr := ParseMailAddress(tc.raw)
+		if name != tc.wantName || addr != tc.wantAddress {
+			t.Fatalf("%q: got name=%q addr=%q", tc.raw, name, addr)
+		}
+	}
+}
+
+func TestMailMessagesAsTableRows(t *testing.T) {
+	msgs := []map[string]any{{
+		"id": float64(42), "subject": "Hi",
+		"from": `"Acme" <a@b.com>`,
+		"date": "today", "folder": float64(1), "size": float64(100), "isNew": true,
+	}}
+	rows := MailMessagesAsTableRows(msgs)
+	if rows[0]["id"] != "42" || rows[0]["fromName"] != "Acme" || rows[0]["fromAddress"] != "a@b.com" {
+		t.Fatalf("got %+v", rows[0])
+	}
+}

onlyoffice.go

@@ -1,650 +0,0 @@
-package onlyoffice
-
-// OnlyOffice client package
-
-import (
-	"encoding/json"
-	"fmt"
-	"github.com/google/go-querystring/query"
-	"io"
-	"net/http"
-	"os"
-	regexp "regexp"
-	"strings"
-	"time"
-)
-
-// NewClient API
-func NewClient(c Credentials) *Client {
-	return &Client{
-		client:      http.DefaultClient,
-		credentials: &c,
-	}
-}
-
-// GetEnvironmentCredentials when using environment variables
-func GetEnvironmentCredentials() Credentials {
-	return Credentials{
-		Url:      os.Getenv("ONLYOFFICE_URL"),
-		User:     os.Getenv("ONLYOFFICE_USER"),
-		Password: os.Getenv("ONLYOFFICE_PASS"),
-	}
-
-}
-
-// Credentials of OnlyOffice User
-type Credentials struct {
-	Url      string `json:"-"`
-	User     string `json:"userName"`
-	Password string `json:"password"`
-}
-
-// ToJson for Credentials
-func (c Credentials) ToJson() []byte {
-	b, err := json.Marshal(c)
-	if err != nil {
-		return nil
-	}
-	return b
-}
-
-// Client of OnlyOffice API uses credentials to get a token and query the API by every request
-type Client struct {
-	client      *http.Client // HTTP client
-	credentials *Credentials // OnlyOffice credentials
-	token       *Token       // Authentication token
-}
-
-// MetaResponse Response
-type MetaResponse struct {
-	Count      int `json:"count"`
-	Total      int `json:"total"`
-	Status     int `json:"status"`
-	StatusCode int `json:"statusCode"`
-}
-
-type Permissions struct {
-	CanEdit   *bool `json:"canEdit,omitempty"`   // Is user can edit
-	CanDelete *bool `json:"canDelete,omitempty"` // Is user can delete
-}
-
-// Project struct
-type Project struct {
-	ID            *int            `json:"id"`
-	Title         *string         `json:"title"`
-	Security      map[string]bool `json:"security,omitempty"`
-	ProjectFolder *json.Number    `json:"projectFolder,omitempty"`
-	Description   *string         `json:"description"`
-	Status        *int            `json:"status"`
-
-	ResponsibleID *string `json:"responsibleId,omitempty"`
-	Responsible   *User   `json:"responsible,omitempty"`
-
-	IsPrivate *bool `json:"isPrivate"`
-
-	TaskCount         *int    `json:"taskCount,omitempty"`
-	TaskCountTotal    *int    `json:"taskCountTotal,omitempty"`
-	MilestoneCount    *int    `json:"milestoneCount,omitempty"`
-	DiscussionCount   *int    `json:"discussionCount,omitempty"`
-	ParticipantCount  *int    `json:"participantCount,omitempty"`
-	TimeTrackingTotal *string `json:"timeTrackingTotal,omitempty"`
-	DocumentsCount    *int    `json:"documentsCount,omitempty"`
-
-	IsFollow *bool `json:"isFollow,omitempty"`
-
-	Created     *time.Time `json:"created"`
-	CreatedBy   *User      `json:"createdBy,omitempty"`
-	CreatedByID *string    `json:"createdById"`
-	Updated     *time.Time `json:"updated"`
-	UpdatedByID *string    `json:"updatedById"`
-
-	Permissions *Permissions `json:",inline,omitempty"`
-}
-
-type Milestone struct {
-	ID          *int64     `json:"id,omitempty"`
-	Description *string    `json:"description,omitempty"`
-	Title       *string    `json:"title,omitempty"`
-	Deadline    *time.Time `json:"deadline,omitempty"`
-
-	IsKey    *bool `json:"isKey,omitempty"`
-	IsNotify *bool `json:"isNotify,omitempty"`
-
-	ProjectOwner *ProjectOwner `json:"projectOwner,omitempty"`
-	Responsible  *User         `json:"responsible,omitempty"`
-
-	ActiveTaskCount *int64 `json:"activeTaskCount,omitempty"`
-	ClosedTaskCount *int64 `json:"closedTaskCount,omitempty"`
-	Status          *int64 `json:"status,omitempty"`
-
-	Created   *time.Time `json:"created,omitempty"`
-	CreatedBy *User      `json:"createdBy,omitempty"`
-
-	Updated *time.Time `json:"updated,omitempty"`
-
-	*Permissions `json:",inline,omitempty"`
-}
-
-type User struct {
-	ID               *string    `json:"id,omitempty"`
-	UserName         *string    `json:"userName,omitempty"`
-	IsVisitor        *bool      `json:"isVisitor,omitempty"`
-	FirstName        *string    `json:"firstName,omitempty"`
-	LastName         *string    `json:"lastName,omitempty"`
-	Email            *string    `json:"email,omitempty"`
-	Status           *int       `json:"status,omitempty"`
-	ActivationStatus *int       `json:"activationStatus,omitempty"`
-	Terminated       any        `json:"terminated,omitempty"`
-	Department       *string    `json:"department,omitempty"`
-	WorkFrom         *time.Time `json:"workFrom,omitempty"`
-	DisplayName      *string    `json:"displayName,omitempty"`
-	AvatarMedium     *string    `json:"avatarMedium,omitempty"`
-	Avatar           *string    `json:"avatar,omitempty"`
-	IsAdmin          *bool      `json:"isAdmin,omitempty"`
-	IsLDAP           *bool      `json:"isLDAP,omitempty"`
-	ListAdminModules []string   `json:"listAdminModules,omitempty"`
-	IsOwner          *bool      `json:"isOwner,omitempty"`
-	CultureName      *string    `json:"cultureName,omitempty"`
-	IsSSO            *bool      `json:"isSSO,omitempty"`
-	AvatarSmall      *string    `json:"avatarSmall,omitempty"`
-	QuotaLimit       *int       `json:"quotaLimit,omitempty"`
-	UsedSpace        *int       `json:"usedSpace,omitempty"`
-	DocsSpace        *int       `json:"docsSpace,omitempty"`
-	MailSpace        *int       `json:"mailSpace,omitempty"`
-	TalkSpace        *int       `json:"talkSpace,omitempty"`
-	ProfileURL       *string    `json:"profileUrl,omitempty"`
-	Title            *string    `json:"title,omitempty"`
-	Sex              *string    `json:"sex,omitempty"`
-	Lead             *string    `json:"lead,omitempty"`
-	Birthday         *time.Time `json:"birthday,omitempty"`
-	Location         *string    `json:"location,omitempty"`
-	Notes            *string    `json:"notes,omitempty"`
-	Contacts         []Contact  `json:"contacts,omitempty"`
-	Groups           []Group    `json:"groups,omitempty"`
-}
-
-type Contact struct {
-	Type  *string `json:"type,omitempty"`
-	Value *string `json:"value,omitempty"`
-}
-
-type Group struct {
-	ID      *string     `json:"id,omitempty"`
-	Name    *string     `json:"name,omitempty"`
-	Manager interface{} `json:"manager,omitempty"`
-}
-
-type Task struct {
-	ID           *int          `json:"id,omitempty"`
-	Title        *string       `json:"title,omitempty"`
-	StartDate    *time.Time    `json:"startDate,omitempty"`
-	Deadline     *time.Time    `json:"deadline,omitempty"`
-	Description  *string       `json:"description,omitempty"`
-	Priority     *int          `json:"priority,omitempty"`
-	ProjectOwner *ProjectOwner `json:"projectOwner,omitempty"`
-
-	Subtasks []any `json:"subtasks,omitempty"`
-
-	Status *ProjectTaskStatus `json:"status,omitempty"`
-
-	Created     *time.Time `json:"created,omitempty"`
-	CreatedBy   *User      `json:"createdBy,omitempty"`
-	CreatedByID *string    `json:"createdById,omitempty"` // UUID
-
-	Updated     *time.Time `json:"updated,omitempty"`
-	UpdatedBy   *User      `json:"updatedBy,omitempty"`
-	UpdatedById *string    `json:"updatedById,omitempty"` // UUID
-
-	Responsibles   []*User  `json:"responsibles,omitempty"`
-	ResponsibleIDS []string `json:"responsibleIds,omitempty"` // UUID list
-
-	CanEdit            *bool `json:"canEdit,omitempty"`
-	CanCreateSubtask   *bool `json:"canCreateSubtask,omitempty"`
-	CanCreateTimeSpend *bool `json:"canCreateTimeSpend,omitempty"`
-	CanDelete          *bool `json:"canDelete,omitempty"`
-	CanReadFiles       *bool `json:"canReadFiles,omitempty"`
-
-	MilestoneID *int64     `json:"milestoneId,omitempty"`
-	Milestone   *Milestone `json:"milestone,omitempty"`
-}
-
-var GiteaIssue2OnlyOfficeMappingRegExp = regexp.MustCompile(`URL:(.*)$`)
-var TestReg = `
-
-URL:https://git.markets-platform.com/TradePlatform/email-templates/issues/1`
-
-// GetGiteaIssueLink from task description
-func (t *Task) GetGiteaIssueLink() string {
-
-	// Get issue from description
-	if t.Description != nil {
-		var match = GiteaIssue2OnlyOfficeMappingRegExp.FindStringSubmatch(*t.Description)
-		if len(match) > 1 {
-			return strings.TrimSpace(match[1])
-		}
-	}
-	return ""
-}
-
-// TaskPriority High = 1, Normal = 0, Low = -1
-type TaskPriority int
-
-const (
-	TaskPriorityHigh   TaskPriority = 1 // High
-	TaskPriorityNormal TaskPriority = 0 // Normal
-	TaskPriorityLow    TaskPriority = -1
-)
-
-type ProjectOwner struct {
-	ID        *int    `json:"id,omitempty"`
-	Title     *string `json:"title,omitempty"`
-	Status    *int    `json:"status,omitempty"`
-	IsPrivate *bool   `json:"isPrivate,omitempty"`
-}
-
-// String for Project to return title
-func (p Project) String() string {
-	return fmt.Sprintf(*p.Title)
-}
-
-// Token OnlyOffice
-type Token struct {
-	Value   string `json:"token"`
-	Expires Time   `json:"expires"`
-}
-
-// Time for OnlyOffice
-type Time time.Time
-
-// To String for Time
-func (t Time) String() string {
-	return time.Time(t).Format("2006-01-02T15:04:05")
-}
-
-func (t Time) Before(u Time) bool {
-	return time.Time(t).Before(time.Time(u))
-}
-
-func (t Time) After(u Time) bool {
-	return time.Time(t).After(time.Time(u))
-}
-
-// UnmarshalJSON for Time
-func (r *Time) UnmarshalJSON(data []byte) error {
-	// Trim quotes
-	data = data[1 : len(data)-1]
-	t, err := time.Parse("2006-01-02T15:04:05.0000000-07:00", string(data))
-	if err != nil {
-		return err
-	}
-	*r = Time(t)
-	return nil
-}
-
-// Request for OnlyOffice API
-type Request struct {
-	Uri    string  // URI is the path to the API endpoint e.g. /api/2.0/project.json
-	Method string  // Method is the HTTP method e.g. GET, POST, PUT, DELETE
-	Params any     // Params is the query parameters
-	Body   any     // Body could be a struct, map, []byte, or string. It will be marshaled to JSON
-	Token  *string // Token is the Authorization header, if not set then it will get a token
-	NoAuth bool    // NoAuth for skipping automatic authentication
-	Debug  bool
-}
-
-// GetMethod for Request
-func (r Request) GetMethod() string {
-	if r.Method == "" {
-		return "GET"
-	}
-	return r.Method
-}
-
-// Query the OnlyOffice API
-//   - If request.Method is not set then it will default to GET
-//   - If request.Code is not nil then it will be marshaled to JSON
-//   - If request.Token is nil then it will get a token
-//   - If request.Token is not nil then it will be used as Authorization header
-//   - If request.NoAuth is true then it will skip automatic authentication
-func (c *Client) Query(request Request, result interface{}) (err error) {
-	var url = fmt.Sprintf("%s%s", c.credentials.Url, request.Uri)
-	var rdr io.Reader = nil
-	var jsonRequestBody string
-
-	// Add query parameters if available
-	if request.Params != nil {
-		v, err := query.Values(request.Params)
-		if err != nil {
-			return err
-		}
-		url = fmt.Sprintf("%s?%s", url, v.Encode())
-	}
-
-	// Create request
-	if request.Body != nil {
-		// Check request body if type is not []byte or string the marshal it to JSON
-		switch request.Body.(type) {
-		case []byte:
-			jsonRequestBody = string(request.Body.([]byte))
-			rdr = strings.NewReader(string(request.Body.([]byte)))
-		case string:
-			jsonRequestBody = request.Body.(string)
-			rdr = strings.NewReader(request.Body.(string))
-		default:
-			// Marshal to JSON
-			b, err := json.Marshal(request.Body)
-			if err != nil {
-				return fmt.Errorf("failed to marshal request body: %v", err)
-			}
-			jsonRequestBody = string(b)
-			rdr = strings.NewReader(string(b))
-		}
-	}
-
-	req, err := http.NewRequest(request.GetMethod(), url, rdr)
-	if err != nil {
-		return err
-	}
-
-	req.Header.Set("Accept", "application/json")
-	req.Header.Set("Content-Type", "application/json")
-	req.Header.Set("Pragma", "no-cache")
-
-	// Get token if not set?
-	if !request.NoAuth {
-		// Get token if not set or expired
-		if c.token == nil || time.Time(c.token.Expires).Before(time.Now()) {
-			c.token, err = c.Auth(c.credentials)
-			if err != nil {
-				return fmt.Errorf("failed to authenticate: %v", err)
-			}
-		}
-	}
-
-	// Set token if available
-	if request.Token != nil {
-		req.Header.Set("Authorization", *request.Token)
-	} else {
-		// Set token from a client if available
-		if c.token != nil {
-			req.Header.Set("Authorization", c.token.Value)
-		}
-	}
-
-	resp, err := c.client.Do(req)
-	if err != nil {
-		return fmt.Errorf("failed to send request: %v", err)
-	}
-	defer resp.Body.Close()
-
-	if result == nil {
-		return nil
-	}
-	if request.Debug {
-		// Rewind reader
-		_ = jsonRequestBody
-		var buf = new(strings.Builder)
-		io.Copy(buf, resp.Body)
-		js := buf.String()
-		return json.Unmarshal([]byte(js), result)
-	} else {
-		// Unmarshal response using reader
-		return json.NewDecoder(resp.Body).Decode(result)
-	}
-
-}
-
-// Auth to authenticate by getting a token using credentials
-func (c *Client) Auth(creds *Credentials) (t *Token, err error) {
-	t = &Token{}
-	return t, c.Query(Request{
-		Uri:    "/api/2.0/authentication.json",
-		Method: "POST",
-		Body:   creds,
-		NoAuth: true,
-	}, &struct { // Unmarshal response into a struct
-		MetaResponse `json:",inline"`
-		Response     *Token `json:"response"`
-	}{
-		Response: t,
-	})
-}
-
-// Projects list
-type Projects []*Project
-
-// Get Project by title
-func (p Projects) Get(title string) *Project {
-	for _, prj := range p {
-		if *prj.Title == title {
-			return prj
-		}
-	}
-	return nil
-}
-
-// GetProjects
-//   - Get all projects, not excluding private projects
-func (c *Client) GetProjects() (list Projects, err error) {
-	return list, c.Query(Request{Uri: `/api/2.0/project/filter.json?simple=true`},
-		&struct {
-			MetaResponse `json:",inline"`
-			Response     *Projects
-		}{Response: &list})
-}
-
-// GetProjectMilestones Get project milestones
-// https://api1.onlyoffice.com/portals/method/project/post/api/2.0/project/%7bid%7d/milestone
-func (c *Client) GetProjectMilestones(project *Project) ([]*Milestone, error) {
-	var list []*Milestone
-
-	err := c.Query(Request{Uri: fmt.Sprintf(`/api/2.0/project/%d/milestone`, *project.ID), Debug: false},
-		&struct {
-			MetaResponse `json:",inline"`
-			//Response     *[]*Milestone
-			Response *[]*Milestone
-		}{Response: &list})
-	return list, err
-}
-
-// GetUsers List users
-func (c *Client) GetUsers() (list []*User, err error) {
-	return list, c.Query(Request{Uri: "/api/2.0/people/filter.json"},
-		&struct {
-			MetaResponse `json:",inline"`
-			Response     *[]*User `json:"response"`
-		}{Response: &list})
-}
-
-// NewProjectRequest
-type NewProjectRequest struct {
-	Title         string `json:"title"`
-	Description   string `json:"description"`
-	ResponsibleID string `json:"responsibleId"`
-}
-
-// ProjectUpdateRequest
-type ProjectUpdateRequest struct {
-	ID            int    `json:"id,omitempty"`
-	Title         string `json:"title,omitempty"`
-	Description   string `json:"description,omitempty"`
-	ResponsibleID string `json:"responsibleId,omitempty"`
-}
-
-// NewProjectTaskRequest
-type NewProjectTaskRequest struct {
-	Title       string `url:"title"`
-	Description string `url:"description"`
-	Notify      bool   `url:"notify"`
-	MilestoneId int    `url:"milestoneId"`
-	Priority    int    `url:"priority"`
-	ProjectId   int    `url:"projectId"`
-	StartDate   Time   `url:"startDate"` // 2024-04-16T00:00:00
-	Deadline    Time   `url:"deadline"`  // 2024-04-20T00:00:00
-	Status      ProjectTaskStatus
-}
-
-type ProjectTaskStatus int
-
-const (
-	ProjectTaskStatusNotAccept      ProjectTaskStatus = 0
-	ProjectTaskStatusOpen           ProjectTaskStatus = 1
-	ProjectTaskStatusClosed         ProjectTaskStatus = 2
-	ProjectTaskStatusDisable        ProjectTaskStatus = 3
-	ProjectTaskStatusUnclassified   ProjectTaskStatus = 4
-	ProjectTaskStatusNotInMilestone ProjectTaskStatus = 5
-)
-
-// ProjectTaskUpdateRequest - Update a task
-// See: https://api1.onlyoffice.com/portals/method/project/put/api/2.0/project/task/%7btaskid%7d
-type ProjectTaskUpdateRequest struct {
-	ID          int    `json:"id"`
-	Title       string `json:"title,omitempty"`
-	Description string `json:"description,omitempty"`
-	Priority    *int   `json:"priority,omitempty"` // optional, New task priority	{"0"} High = 1, Normal = 0, Low = -1
-	StartDate   *Time  `json:"startDate,omitempty"`
-	Deadline    *Time  `json:"deadline,omitempty"`
-	//Deadline    *Time             `json:"closed,omitempty"`
-	ProjectID   *int64            `json:"projectID,omitempty"` // New task project ID (optional)
-	MilestoneId *int64            `json:"milestoneid,omitempty"`
-	Responsible []string          `json:"responsibles,omitempty"` // New list of task responsibles	{"9924256A-739C-462b-AF15-E652A3B1B6EB"}
-	Notify      bool              `json:"notify,omitempty"`
-	Status      ProjectTaskStatus `json:"status,omitempty"`
-	//Progress     int64    `json:"progress,omitempty"` // New task progress
-}
-
-// MarshalJSON to quote Time as string
-func (t Time) MarshalJSON() ([]byte, error) {
-	return []byte(fmt.Sprintf(
-		`"%s"`,
-		time.Time(t).Format("2006-01-02T15:04:05"),
-	)), nil
-}
-
-// CreateProject with a new project request
-//   - if responsibleID is empty then it will use the first user as responsible
-//   - if responsibleID is empty and user is not found then it will use the current user
-func (c *Client) CreateProject(np NewProjectRequest) (prj *Project, err error) {
-	// We need a responsible user
-	if np.ResponsibleID == "" {
-		var users []*User
-		users, err = c.GetUsers()
-		if err != nil {
-			return
-		}
-
-		// Find user by email
-		for _, user := range users {
-			if *user.Email == c.credentials.User {
-				np.ResponsibleID = *user.ID
-				break
-			}
-		}
-
-		// Has no user?
-		if np.ResponsibleID == "" {
-			// Set first user as responsible
-			np.ResponsibleID = *users[0].ID
-		}
-	}
-
-	prj = new(Project)
-	return prj, c.Query(Request{
-		Uri:    "/api/2.0/project.json",
-		Method: "POST",
-		Body:   np,
-	}, &struct {
-		MetaResponse `json:",inline"`
-		Response     *Project `json:"response"`
-	}{
-		Response: prj,
-	})
-}
-
-func (c *Client) CreateProjectTask(req NewProjectTaskRequest) (task *Task, err error) {
-	task = &Task{}
-	return task, c.Query(Request{
-		Uri:    fmt.Sprintf("/api/2.0/project/%d/task.json", req.ProjectId),
-		Method: "POST",
-		Body:   req,
-	}, &struct {
-		//MetaResponse `json:",inline"`
-		Response *Task `json:"response"`
-	}{task})
-}
-
-func (c *Client) DeleteProject(id int) (p *Project, err error) {
-	p = &Project{}
-	return p, c.Query(
-		Request{
-			Uri:    fmt.Sprintf("/api/2.0/project/%d.json", id),
-			Method: "DELETE"},
-		&struct {
-			//MetaResponse `json:",inline"`
-			Response *Project `json:"response"`
-		}{p})
-}
-
-func (c *Client) UpdateProject(req ProjectUpdateRequest) (p *Project, err error) {
-	p = &Project{}
-	return p, c.Query(Request{
-		Uri:    fmt.Sprintf("/api/2.0/project/%d.json", req.ID),
-		Method: "PUT",
-		Body:   req,
-	},
-		&struct {
-			//MetaResponse `json:",inline"`
-			Response *Project `json:"response"`
-		}{p})
-}
-
-func (c *Client) UpdateProjectTask(req ProjectTaskUpdateRequest) (task *Task, err error) {
-	task = &Task{}
-	return task, c.Query(
-		Request{
-			Uri:    fmt.Sprintf("/api/2.0/project/task/%d.json", req.ID),
-			Method: "PUT",
-			Body:   req,
-			Debug:  true,
-		}, &struct {
-			//MetaResponse `json:",inline"`
-			Response *Task `json:"response"`
-		}{task})
-}
-
-// ProjectGetTasksRequest
-// See: https://api.onlyoffice.com/workspace/api-backend/usage-api/project/tasks/get-tasks-by-status/
-type ProjectGetTasksRequest struct {
-	ProjectId  int    `url:"projectId"`
-	Count      int    `url:"count"`
-	StartIndex int    `url:"startIndex"`
-	SortBy     string `url:"sortBy"`
-	SortOrder  string `url:"sortOrder"`
-	Simple     bool   `url:"simple"`
-}
-
-// NewProjectGetTasksRequest to get a simple task list
-func NewProjectGetTasksRequest(projectId int) ProjectGetTasksRequest {
-	return ProjectGetTasksRequest{
-		ProjectId:  projectId,
-		Count:      1000,
-		StartIndex: 0,
-		SortBy:     "title",
-		SortOrder:  "ascending",
-		Simple:     true,
-	}
-}
-
-// GetTasks returns a list of all the tasks from a project with the ID specified in the request.
-func (c *Client) GetTasks(req ProjectGetTasksRequest) (tasks []*Task, err error) {
-	return tasks, c.Query(
-		Request{
-			Uri:    "/api/2.0/project/task/filter.json",
-			Params: req,
-			Debug:  true,
-		},
-		&struct {
-			//MetaResponse `json:",inline"`
-			Response *[]*Task `json:"response"`
-		}{&tasks})
-}

projects.go

@@ -0,0 +1,206 @@
+package onlyoffice
+
+// Project / Milestone typed API.
+
+import (
+	"context"
+	"encoding/json"
+	"fmt"
+	"net/url"
+	"time"
+)
+
+// Project struct
+type Project struct {
+	ID            *int            `json:"id"`
+	Title         *string         `json:"title"`
+	Security      map[string]bool `json:"security,omitempty"`
+	ProjectFolder *json.Number    `json:"projectFolder,omitempty"`
+	Description   *string         `json:"description"`
+	Status        *int            `json:"status"`
+
+	ResponsibleID *string `json:"responsibleId,omitempty"`
+	Responsible   *User   `json:"responsible,omitempty"`
+
+	IsPrivate *bool `json:"isPrivate"`
+
+	TaskCount         *int    `json:"taskCount,omitempty"`
+	TaskCountTotal    *int    `json:"taskCountTotal,omitempty"`
+	MilestoneCount    *int    `json:"milestoneCount,omitempty"`
+	DiscussionCount   *int    `json:"discussionCount,omitempty"`
+	ParticipantCount  *int    `json:"participantCount,omitempty"`
+	TimeTrackingTotal *string `json:"timeTrackingTotal,omitempty"`
+	DocumentsCount    *int    `json:"documentsCount,omitempty"`
+
+	IsFollow *bool `json:"isFollow,omitempty"`
+
+	Created     *time.Time `json:"created"`
+	CreatedBy   *User      `json:"createdBy,omitempty"`
+	CreatedByID *string    `json:"createdById"`
+	Updated     *time.Time `json:"updated"`
+	UpdatedByID *string    `json:"updatedById"`
+
+	Permissions *Permissions `json:",inline,omitempty"`
+}
+
+// String returns the project Title, or "" if the Title is nil.
+func (p Project) String() string {
+	if p.Title == nil {
+		return ""
+	}
+	return *p.Title
+}
+
+// Projects is a slice with helpers for title lookup.
+type Projects []*Project
+
+// Get returns the first project whose title equals title, or nil.
+func (p Projects) Get(title string) *Project {
+	for _, prj := range p {
+		if prj != nil && prj.Title != nil && *prj.Title == title {
+			return prj
+		}
+	}
+	return nil
+}
+
+// Milestone is a project milestone.
+type Milestone struct {
+	ID          *int64     `json:"id,omitempty"`
+	Description *string    `json:"description,omitempty"`
+	Title       *string    `json:"title,omitempty"`
+	Deadline    *time.Time `json:"deadline,omitempty"`
+
+	IsKey    *bool `json:"isKey,omitempty"`
+	IsNotify *bool `json:"isNotify,omitempty"`
+
+	ProjectOwner *ProjectOwner `json:"projectOwner,omitempty"`
+	Responsible  *User         `json:"responsible,omitempty"`
+
+	ActiveTaskCount *int64 `json:"activeTaskCount,omitempty"`
+	ClosedTaskCount *int64 `json:"closedTaskCount,omitempty"`
+	Status          *int64 `json:"status,omitempty"`
+
+	Created   *time.Time `json:"created,omitempty"`
+	CreatedBy *User      `json:"createdBy,omitempty"`
+
+	Updated *time.Time `json:"updated,omitempty"`
+
+	*Permissions `json:",inline,omitempty"`
+}
+
+// ProjectOwner is a compact project reference used by Milestone/Task.
+type ProjectOwner struct {
+	ID        *int    `json:"id,omitempty"`
+	Title     *string `json:"title,omitempty"`
+	Status    *int    `json:"status,omitempty"`
+	IsPrivate *bool   `json:"isPrivate,omitempty"`
+}
+
+// NewProjectRequest is the payload for CreateProject.
+type NewProjectRequest struct {
+	Title         string `json:"title"`
+	Description   string `json:"description"`
+	ResponsibleID string `json:"responsibleId"`
+}
+
+// ProjectUpdateRequest is the payload for UpdateProject. Only non-empty
+// fields are transmitted (enforced by omitempty).
+type ProjectUpdateRequest struct {
+	ID            int    `json:"id,omitempty"`
+	Title         string `json:"title,omitempty"`
+	Description   string `json:"description,omitempty"`
+	ResponsibleID string `json:"responsibleId,omitempty"`
+}
+
+// GetProjects returns all projects, including private ones the caller can see.
+func (c *Client) GetProjects() (list Projects, err error) {
+	return list, c.Query(Request{Uri: `/api/2.0/project/filter.json?simple=true`},
+		&struct {
+			MetaResponse `json:",inline"`
+			Response     *Projects
+		}{Response: &list})
+}
+
+// GetProjectByID returns a single project as an untyped map. The typed
+// counterpart is not currently provided; callers can iterate GetProjects and
+// match by title or write their own typed wrapper.
+//
+// When projectID is empty the configured default is used.
+func (c *Client) GetProjectByID(ctx context.Context, projectID string) (map[string]any, error) {
+	if projectID == "" {
+		projectID = c.defaults.ProjectID
+	}
+	return c.ResponseObject(ctx, fmt.Sprintf("/api/2.0/project/%s.json", url.PathEscape(projectID)))
+}
+
+// GetProjectMilestones returns milestones for the given project.
+// https://api1.onlyoffice.com/portals/method/project/post/api/2.0/project/%7bid%7d/milestone
+func (c *Client) GetProjectMilestones(project *Project) ([]*Milestone, error) {
+	var list []*Milestone
+	err := c.Query(Request{Uri: fmt.Sprintf(`/api/2.0/project/%d/milestone`, *project.ID)},
+		&struct {
+			MetaResponse `json:",inline"`
+			Response     *[]*Milestone
+		}{Response: &list})
+	return list, err
+}
+
+// CreateProject creates a new project.
+//   - if ResponsibleID is empty, the first user matching the client's User
+//     email is picked; failing that, the first portal user.
+func (c *Client) CreateProject(np NewProjectRequest) (*Project, error) {
+	if np.ResponsibleID == "" {
+		users, err := c.GetUsers()
+		if err != nil {
+			return nil, err
+		}
+		for _, u := range users {
+			if u.Email != nil && *u.Email == c.credentials.User {
+				np.ResponsibleID = *u.ID
+				break
+			}
+		}
+		if np.ResponsibleID == "" && len(users) > 0 && users[0].ID != nil {
+			np.ResponsibleID = *users[0].ID
+		}
+	}
+
+	prj := new(Project)
+	return prj, c.Query(Request{
+		Uri:    "/api/2.0/project.json",
+		Method: "POST",
+		Body:   np,
+	}, &struct {
+		MetaResponse `json:",inline"`
+		Response     *Project `json:"response"`
+	}{
+		Response: prj,
+	})
+}
+
+// DeleteProject deletes a project by numeric ID.
+func (c *Client) DeleteProject(id int) (*Project, error) {
+	p := &Project{}
+	return p, c.Query(
+		Request{
+			Uri:    fmt.Sprintf("/api/2.0/project/%d.json", id),
+			Method: "DELETE",
+		},
+		&struct {
+			Response *Project `json:"response"`
+		}{p})
+}
+
+// UpdateProject updates project fields.
+func (c *Client) UpdateProject(req ProjectUpdateRequest) (*Project, error) {
+	p := &Project{}
+	return p, c.Query(Request{
+		Uri:    fmt.Sprintf("/api/2.0/project/%d.json", req.ID),
+		Method: "PUT",
+		Body:   req,
+	},
+		&struct {
+			Response *Project `json:"response"`
+		}{p})
+}

release-please-config.json

@@ -0,0 +1,28 @@
+{
+  "$schema": "https://raw.githubusercontent.com/googleapis/release-please/main/schemas/config.json",
+  "release-type": "go",
+  "bump-minor-pre-major": true,
+  "bump-patch-for-minor-pre-major": false,
+  "include-v-in-tag": true,
+  "include-component-in-tag": false,
+  "pull-request-title-pattern": "chore${scope}: release ${version}",
+  "changelog-path": "CHANGELOG.md",
+  "changelog-sections": [
+    { "type": "feat", "section": "Features" },
+    { "type": "fix", "section": "Bug Fixes" },
+    { "type": "perf", "section": "Performance Improvements" },
+    { "type": "revert", "section": "Reverts" },
+    { "type": "refactor", "section": "Code Refactoring" },
+    { "type": "docs", "section": "Documentation" },
+    { "type": "test", "section": "Tests", "hidden": true },
+    { "type": "build", "section": "Build System", "hidden": true },
+    { "type": "ci", "section": "Continuous Integration", "hidden": true },
+    { "type": "chore", "section": "Miscellaneous", "hidden": true },
+    { "type": "style", "section": "Styles", "hidden": true }
+  ],
+  "packages": {
+    ".": {
+      "package-name": "go-onlyoffice"
+    }
+  }
+}

request.go

@@ -0,0 +1,188 @@
+package onlyoffice
+
+// Low-level Request/Query primitive used by the typed helpers in this
+// package. Prefer the domain-specific methods (CreateProject, GetTasks, …)
+// or the untyped helpers in http.go (ResponseArray, ResponseObject, …) — this
+// file is kept for API compatibility and for rare callers that want to hit
+// arbitrary endpoints with arbitrary Params/Body.
+
+import (
+	"bytes"
+	"encoding/json"
+	"fmt"
+	"io"
+	"net/http"
+	"strings"
+	"time"
+
+	"github.com/google/go-querystring/query"
+)
+
+// Request for OnlyOffice API.
+type Request struct {
+	Uri    string  // URI is the path to the API endpoint e.g. /api/2.0/project.json
+	Method string  // HTTP method; defaults to GET when empty.
+	Params any     // Params is serialised to the query string via go-querystring.
+	Body   any     // Body is marshalled to JSON unless it is []byte or string.
+	Token  *string // Explicit Authorization header; overrides the cached token.
+	NoAuth bool    // Skip automatic authentication.
+	Debug  bool    // Kept for backwards compatibility; no longer affects behaviour.
+}
+
+// GetMethod returns Method, defaulting to GET when unset.
+func (r Request) GetMethod() string {
+	if r.Method == "" {
+		return http.MethodGet
+	}
+	return r.Method
+}
+
+// Query the OnlyOffice API.
+//
+//   - If request.Method is empty it defaults to GET.
+//   - If request.Body is non-nil it is marshalled to JSON (unless it is
+//     already []byte or string, which are passed through verbatim).
+//   - If request.Token is nil the cached session token is used (and
+//     refreshed as needed unless NoAuth is set).
+//   - If request.Token is non-nil it is used verbatim as the Authorization
+//     header.
+//   - If request.NoAuth is true then no token is fetched — the caller is
+//     responsible for authenticating requests (used internally by Auth()).
+func (c *Client) Query(request Request, result interface{}) error {
+	url := c.credentials.Url + request.Uri
+
+	if request.Params != nil {
+		v, err := query.Values(request.Params)
+		if err != nil {
+			return err
+		}
+		url = fmt.Sprintf("%s?%s", url, v.Encode())
+	}
+
+	rdr, err := requestBodyReader(request.Body)
+	if err != nil {
+		return err
+	}
+
+	req, err := http.NewRequest(request.GetMethod(), url, rdr)
+	if err != nil {
+		return err
+	}
+	req.Header.Set("Accept", "application/json")
+	req.Header.Set("Content-Type", "application/json")
+	req.Header.Set("Pragma", "no-cache")
+
+	if !request.NoAuth {
+		if err := c.ensureToken(); err != nil {
+			return fmt.Errorf("failed to authenticate: %w", err)
+		}
+	}
+	switch {
+	case request.Token != nil:
+		req.Header.Set("Authorization", *request.Token)
+	case c.token != nil:
+		req.Header.Set("Authorization", c.token.Value)
+	}
+
+	resp, err := c.client.Do(req)
+	if err != nil {
+		return fmt.Errorf("failed to send request: %w", err)
+	}
+	defer resp.Body.Close()
+
+	if result == nil {
+		return nil
+	}
+	return json.NewDecoder(resp.Body).Decode(result)
+}
+
+// requestBodyReader normalises Query() body input into an io.Reader.
+// []byte and string are passed through verbatim; everything else is
+// marshalled to JSON. Returns (nil, nil) for a nil body.
+func requestBodyReader(body any) (io.Reader, error) {
+	if body == nil {
+		return nil, nil
+	}
+	switch b := body.(type) {
+	case []byte:
+		return bytes.NewReader(b), nil
+	case string:
+		return strings.NewReader(b), nil
+	default:
+		j, err := json.Marshal(body)
+		if err != nil {
+			return nil, fmt.Errorf("failed to marshal request body: %w", err)
+		}
+		return bytes.NewReader(j), nil
+	}
+}
+
+// ToJson for Credentials returns a JSON-encoded payload suitable for the
+// authentication endpoint. Returns nil on marshal error (which never happens
+// for this struct).
+func (c Credentials) ToJson() []byte {
+	b, err := json.Marshal(c)
+	if err != nil {
+		return nil
+	}
+	return b
+}
+
+// MetaResponse is the shape of every envelope returned by the OnlyOffice API.
+// It is embedded inline into the per-endpoint response structs via the
+// `json:",inline"` convention used throughout this package.
+type MetaResponse struct {
+	Count      int `json:"count"`
+	Total      int `json:"total"`
+	Status     int `json:"status"`
+	StatusCode int `json:"statusCode"`
+}
+
+// Permissions is a common subset of boolean permissions embedded into
+// several entity types.
+type Permissions struct {
+	CanEdit   *bool `json:"canEdit,omitempty"`
+	CanDelete *bool `json:"canDelete,omitempty"`
+}
+
+// Token is the authentication token returned by /api/2.0/authentication.json.
+type Token struct {
+	Value   string `json:"token"`
+	Expires Time   `json:"expires"`
+}
+
+// Time wraps time.Time with the OnlyOffice "yyyy-MM-ddTHH:mm:ss.fffffffzzz"
+// wire format used by several endpoints.
+type Time time.Time
+
+// String formats the time in OnlyOffice's expected ISO-8601 variant (without
+// fractional seconds or timezone).
+func (t Time) String() string {
+	return time.Time(t).Format("2006-01-02T15:04:05")
+}
+
+// Before reports whether t is before u.
+func (t Time) Before(u Time) bool {
+	return time.Time(t).Before(time.Time(u))
+}
+
+// After reports whether t is after u.
+func (t Time) After(u Time) bool {
+	return time.Time(t).After(time.Time(u))
+}
+
+// UnmarshalJSON decodes the OnlyOffice wire format into Time.
+func (r *Time) UnmarshalJSON(data []byte) error {
+	data = data[1 : len(data)-1] // trim surrounding quotes
+	t, err := time.Parse("2006-01-02T15:04:05.0000000-07:00", string(data))
+	if err != nil {
+		return err
+	}
+	*r = Time(t)
+	return nil
+}
+
+// MarshalJSON emits the OnlyOffice-friendly short form.
+func (t Time) MarshalJSON() ([]byte, error) {
+	return []byte(fmt.Sprintf(`"%s"`, time.Time(t).Format("2006-01-02T15:04:05"))), nil
+}

tasks.go

@@ -0,0 +1,275 @@
+package onlyoffice
+
+// Project task API — both typed (Task + CreateProjectTask / UpdateProjectTask
+// / GetTasks) and untyped form-endpoint helpers (AddTask, AddSubtask,
+// UpdateTaskStatus, DeleteTask, ListTasks, …). The typed path mirrors the
+// JSON responses; the form-encoded path mirrors the Python cv/bin/office
+// reference and the OnlyOffice web UI.
+
+import (
+	"context"
+	"fmt"
+	"net/url"
+	"regexp"
+	"strconv"
+	"strings"
+	"time"
+)
+
+// Task is the JSON-mapped project task as returned by /project/task/*.
+type Task struct {
+	ID           *int          `json:"id,omitempty"`
+	Title        *string       `json:"title,omitempty"`
+	StartDate    *time.Time    `json:"startDate,omitempty"`
+	Deadline     *time.Time    `json:"deadline,omitempty"`
+	Description  *string       `json:"description,omitempty"`
+	Priority     *int          `json:"priority,omitempty"`
+	ProjectOwner *ProjectOwner `json:"projectOwner,omitempty"`
+
+	Subtasks []any `json:"subtasks,omitempty"`
+
+	Status *ProjectTaskStatus `json:"status,omitempty"`
+
+	Created     *time.Time `json:"created,omitempty"`
+	CreatedBy   *User      `json:"createdBy,omitempty"`
+	CreatedByID *string    `json:"createdById,omitempty"` // UUID
+
+	Updated     *time.Time `json:"updated,omitempty"`
+	UpdatedBy   *User      `json:"updatedBy,omitempty"`
+	UpdatedById *string    `json:"updatedById,omitempty"` // UUID
+
+	Responsibles   []*User  `json:"responsibles,omitempty"`
+	ResponsibleIDS []string `json:"responsibleIds,omitempty"` // UUID list
+
+	CanEdit            *bool `json:"canEdit,omitempty"`
+	CanCreateSubtask   *bool `json:"canCreateSubtask,omitempty"`
+	CanCreateTimeSpend *bool `json:"canCreateTimeSpend,omitempty"`
+	CanDelete          *bool `json:"canDelete,omitempty"`
+	CanReadFiles       *bool `json:"canReadFiles,omitempty"`
+
+	MilestoneID *int64     `json:"milestoneId,omitempty"`
+	Milestone   *Milestone `json:"milestone,omitempty"`
+}
+
+// TaskPriority values: High = 1, Normal = 0, Low = -1.
+type TaskPriority int
+
+const (
+	TaskPriorityHigh   TaskPriority = 1
+	TaskPriorityNormal TaskPriority = 0
+	TaskPriorityLow    TaskPriority = -1
+)
+
+// ProjectTaskStatus encodes OnlyOffice task status codes.
+type ProjectTaskStatus int
+
+const (
+	ProjectTaskStatusNotAccept      ProjectTaskStatus = 0
+	ProjectTaskStatusOpen           ProjectTaskStatus = 1
+	ProjectTaskStatusClosed         ProjectTaskStatus = 2
+	ProjectTaskStatusDisable        ProjectTaskStatus = 3
+	ProjectTaskStatusUnclassified   ProjectTaskStatus = 4
+	ProjectTaskStatusNotInMilestone ProjectTaskStatus = 5
+)
+
+// GiteaIssue2OnlyOfficeMappingRegExp extracts a "URL:" footer pointing at a
+// Gitea issue, used by external sync tooling (inventar-sync et al.).
+var GiteaIssue2OnlyOfficeMappingRegExp = regexp.MustCompile(`URL:(.*)$`)
+
+// GetGiteaIssueLink returns the first Gitea URL embedded in the task
+// description via the "URL:<url>" convention, or "" if absent.
+func (t *Task) GetGiteaIssueLink() string {
+	if t.Description == nil {
+		return ""
+	}
+	m := GiteaIssue2OnlyOfficeMappingRegExp.FindStringSubmatch(*t.Description)
+	if len(m) > 1 {
+		return strings.TrimSpace(m[1])
+	}
+	return ""
+}
+
+// NewProjectTaskRequest creates a new task via the typed JSON API.
+type NewProjectTaskRequest struct {
+	Title       string `url:"title"`
+	Description string `url:"description"`
+	Notify      bool   `url:"notify"`
+	MilestoneId int    `url:"milestoneId"`
+	Priority    int    `url:"priority"`
+	ProjectId   int    `url:"projectId"`
+	StartDate   Time   `url:"startDate"`
+	Deadline    Time   `url:"deadline"`
+	Status      ProjectTaskStatus
+}
+
+// ProjectTaskUpdateRequest updates an existing task.
+// https://api1.onlyoffice.com/portals/method/project/put/api/2.0/project/task/%7btaskid%7d
+type ProjectTaskUpdateRequest struct {
+	ID          int    `json:"id"`
+	Title       string `json:"title,omitempty"`
+	Description string `json:"description,omitempty"`
+	Priority    *int   `json:"priority,omitempty"`
+	StartDate   *Time  `json:"startDate,omitempty"`
+	Deadline    *Time  `json:"deadline,omitempty"`
+
+	ProjectID   *int64            `json:"projectID,omitempty"`
+	MilestoneId *int64            `json:"milestoneid,omitempty"`
+	Responsible []string          `json:"responsibles,omitempty"` // UUID list
+	Notify      bool              `json:"notify,omitempty"`
+	Status      ProjectTaskStatus `json:"status,omitempty"`
+}
+
+// ProjectGetTasksRequest is the filter payload for GetTasks.
+// See https://api.onlyoffice.com/workspace/api-backend/usage-api/project/tasks/get-tasks-by-status/
+type ProjectGetTasksRequest struct {
+	ProjectId  int    `url:"projectId"`
+	Count      int    `url:"count"`
+	StartIndex int    `url:"startIndex"`
+	SortBy     string `url:"sortBy"`
+	SortOrder  string `url:"sortOrder"`
+	Simple     bool   `url:"simple"`
+}
+
+// NewProjectGetTasksRequest builds a simple "all tasks, sorted by title"
+// request pre-populated with sane defaults (count=1000).
+func NewProjectGetTasksRequest(projectId int) ProjectGetTasksRequest {
+	return ProjectGetTasksRequest{
+		ProjectId:  projectId,
+		Count:      1000,
+		StartIndex: 0,
+		SortBy:     "title",
+		SortOrder:  "ascending",
+		Simple:     true,
+	}
+}
+
+// CreateProjectTask creates a project task via the typed JSON API.
+func (c *Client) CreateProjectTask(req NewProjectTaskRequest) (*Task, error) {
+	task := &Task{}
+	return task, c.Query(Request{
+		Uri:    fmt.Sprintf("/api/2.0/project/%d/task.json", req.ProjectId),
+		Method: "POST",
+		Body:   req,
+	}, &struct {
+		Response *Task `json:"response"`
+	}{task})
+}
+
+// UpdateProjectTask updates task fields via the typed JSON API.
+func (c *Client) UpdateProjectTask(req ProjectTaskUpdateRequest) (*Task, error) {
+	task := &Task{}
+	return task, c.Query(
+		Request{
+			Uri:    fmt.Sprintf("/api/2.0/project/task/%d.json", req.ID),
+			Method: "PUT",
+			Body:   req,
+		}, &struct {
+			Response *Task `json:"response"`
+		}{task})
+}
+
+// GetTasks returns a list of tasks for a project matching the given filter.
+func (c *Client) GetTasks(req ProjectGetTasksRequest) (tasks []*Task, err error) {
+	return tasks, c.Query(
+		Request{
+			Uri:    "/api/2.0/project/task/filter.json",
+			Params: req,
+		},
+		&struct {
+			Response *[]*Task `json:"response"`
+		}{&tasks})
+}
+
+// -----------------------------------------------------------------------------
+// Untyped form-endpoint helpers (Python cv/bin/office parity, web UI parity)
+// -----------------------------------------------------------------------------
+
+// ListTasks lists tasks in a single project. When projectID is empty the
+// configured default is used. status accepts "open"/"closed" or a numeric
+// code.
+func (c *Client) ListTasks(ctx context.Context, projectID, status string) ([]map[string]any, error) {
+	if projectID == "" {
+		projectID = c.defaults.ProjectID
+	}
+	if projectID == "" {
+		return nil, fmt.Errorf("ListTasks: projectID is required (pass explicitly or set via SetDefaults)")
+	}
+	path := fmt.Sprintf("/api/2.0/project/%s/task.json", url.PathEscape(projectID))
+	if code := taskStatusCode(status); code != "" {
+		path += "?status=" + url.QueryEscape(code)
+	}
+	return c.ResponseArray(ctx, path)
+}
+
+// ListAllTasks lists tasks across projects for the authenticated user.
+func (c *Client) ListAllTasks(ctx context.Context, status string) ([]map[string]any, error) {
+	path := "/api/2.0/project/task/@self.json"
+	if code := taskStatusCode(status); code != "" {
+		path += "?status=" + url.QueryEscape(code)
+	}
+	return c.ResponseArray(ctx, path)
+}
+
+// taskStatusCode maps "open"/"closed" to their numeric codes, passes any
+// other non-empty value through verbatim, and returns "" for an empty input.
+func taskStatusCode(status string) string {
+	switch status {
+	case "":
+		return ""
+	case "open":
+		return "0"
+	case "closed":
+		return "1"
+	default:
+		return status
+	}
+}
+
+// GetTaskByID returns a task as an untyped map, including its subtasks.
+func (c *Client) GetTaskByID(ctx context.Context, taskID string) (map[string]any, error) {
+	return c.ResponseObject(ctx, fmt.Sprintf("/api/2.0/project/task/%s.json", url.PathEscape(taskID)))
+}
+
+// AddTask creates a task via the form-encoded endpoint (no milestone/start).
+// Prefer the typed CreateProjectTask for new code; AddTask is kept for
+// parity with the Python reference tooling.
+func (c *Client) AddTask(ctx context.Context, projectID, title, description string, priority int, deadline string) (map[string]any, error) {
+	if projectID == "" {
+		projectID = c.defaults.ProjectID
+	}
+	fields := url.Values{}
+	fields.Set("title", title)
+	fields.Set("description", description)
+	fields.Set("priority", strconv.Itoa(priority))
+	if deadline != "" {
+		fields.Set("deadline", deadline)
+	}
+	return c.postFormObject(ctx, fmt.Sprintf("/api/2.0/project/%s/task.json", url.PathEscape(projectID)), fields)
+}
+
+// AddSubtask creates a subtask under parentTaskID.
+func (c *Client) AddSubtask(ctx context.Context, parentTaskID, title string) (map[string]any, error) {
+	fields := url.Values{}
+	fields.Set("title", title)
+	return c.postFormObject(ctx, fmt.Sprintf("/api/2.0/project/task/%s.json", url.PathEscape(parentTaskID)), fields)
+}
+
+// UpdateTaskStatus changes task status. status accepts "open"/"closed"
+// (mapped to 1/2) or a raw numeric code passed through.
+func (c *Client) UpdateTaskStatus(ctx context.Context, taskID, status string) (map[string]any, error) {
+	code := status
+	switch status {
+	case "open":
+		code = "1"
+	case "closed":
+		code = "2"
+	}
+	fields := url.Values{}
+	fields.Set("status", code)
+	return c.putFormObject(ctx, fmt.Sprintf("/api/2.0/project/task/%s/status.json", url.PathEscape(taskID)), fields)
+}
+
+// DeleteTask removes a project task by ID.
+func (c *Client) DeleteTask(ctx context.Context, taskID string) (map[string]any, error) {
+	return c.deleteObject(ctx, fmt.Sprintf("/api/2.0/project/task/%s.json", url.PathEscape(taskID)))
+}

testdata/project_files_response.json

@@ -0,0 +1,25 @@
+{
+  "count": 1,
+  "status": 0,
+  "statusCode": 200,
+  "response": {
+    "folders": [
+      {
+        "id": 10,
+        "title": "Subfolder",
+        "filesCount": 0,
+        "foldersCount": 0
+      }
+    ],
+    "files": [
+      {
+        "id": 100,
+        "title": "readme.txt",
+        "fileExst": ".txt",
+        "contentLength": "12",
+        "fileType": 2,
+        "viewUrl": "/Products/Files/DocEditor.aspx?fileid=100"
+      }
+    ]
+  }
+}

testdata/task_files_response.json

@@ -0,0 +1,14 @@
+{
+  "count": 1,
+  "status": 0,
+  "statusCode": 200,
+  "response": [
+    {
+      "id": 200,
+      "title": "attach.pdf",
+      "fileExst": ".pdf",
+      "contentLength": "1024",
+      "fileType": 2
+    }
+  ]
+}

unit_test.go

@@ -0,0 +1,133 @@
+package onlyoffice
+
+// Pure unit tests — no network, no fake vendor HTTP servers.
+// Protocol-level behaviour is covered by *_integration_test.go (build-tagged).
+
+import (
+	"context"
+	"encoding/json"
+	"testing"
+	"time"
+)
+
+func TestResponseFieldMissing(t *testing.T) {
+	if _, err := responseField(json.RawMessage(`{"other":1}`), "response"); err == nil {
+		t.Fatal("expected error on missing field")
+	}
+}
+
+func TestResponseFieldPresent(t *testing.T) {
+	raw, err := responseField(json.RawMessage(`{"response":[1,2,3],"other":9}`), "response")
+	if err != nil {
+		t.Fatal(err)
+	}
+	if string(raw) != "[1,2,3]" {
+		t.Errorf("got %s", string(raw))
+	}
+}
+
+func TestRequestBodyReaderNil(t *testing.T) {
+	r, err := requestBodyReader(nil)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if r != nil {
+		t.Errorf("expected nil reader for nil body, got %T", r)
+	}
+}
+
+func TestRequestBodyReaderBytes(t *testing.T) {
+	r, err := requestBodyReader([]byte(`{"k":1}`))
+	if err != nil {
+		t.Fatal(err)
+	}
+	if r == nil {
+		t.Fatal("nil reader")
+	}
+}
+
+func TestRequestBodyReaderStruct(t *testing.T) {
+	type payload struct {
+		Name string `json:"name"`
+	}
+	r, err := requestBodyReader(payload{Name: "x"})
+	if err != nil {
+		t.Fatal(err)
+	}
+	buf := make([]byte, 64)
+	n, _ := r.Read(buf)
+	if string(buf[:n]) != `{"name":"x"}` {
+		t.Errorf("got %q", string(buf[:n]))
+	}
+}
+
+func TestProjectStringNilSafe(t *testing.T) {
+	var p Project
+	if got := p.String(); got != "" {
+		t.Errorf("nil Title should yield empty string, got %q", got)
+	}
+	title := "my project"
+	p.Title = &title
+	if got := p.String(); got != "my project" {
+		t.Errorf("got %q", got)
+	}
+	titleWithPercent := "100% coverage"
+	p.Title = &titleWithPercent
+	if got := p.String(); got != "100% coverage" {
+		t.Errorf("Sprintf format-string regression: got %q", got)
+	}
+}
+
+func TestAuthenticateContextRespectsCancellation(t *testing.T) {
+	// Point the client at a routable-but-unresponsive endpoint (TEST-NET-1
+	// per RFC 5737) and cancel the context almost immediately. The test
+	// verifies ctx plumbing, not OnlyOffice protocol — no vendor mock.
+	c := NewClient(Credentials{Url: "http://192.0.2.1:9", User: "u", Password: "p"})
+	ctx, cancel := context.WithTimeout(context.Background(), 25*time.Millisecond)
+	defer cancel()
+	if err := c.AuthenticateContext(ctx); err == nil {
+		t.Fatal("expected error on context timeout against unreachable endpoint")
+	}
+}
+
+func TestInvalidateTokenIsIdempotent(t *testing.T) {
+	c := NewClient(Credentials{Url: "http://example.invalid", User: "u", Password: "p"})
+	c.InvalidateToken()
+	c.InvalidateToken()
+	if c.token != nil {
+		t.Fatal("token should remain nil after double invalidate")
+	}
+}
+
+func TestGetEnvironmentCredentialsAliases(t *testing.T) {
+	t.Setenv("ONLYOFFICE_URL", "")
+	t.Setenv("ONLYOFFICE_HOST", "https://example/")
+	t.Setenv("ONLYOFFICE_USER", "")
+	t.Setenv("ONLYOFFICE_NAME", "alice")
+	t.Setenv("ONLYOFFICE_PASS", "")
+	t.Setenv("ONLYOFFICE_PASSWORD", "s3cret")
+	c := GetEnvironmentCredentials()
+	if c.Url != "https://example" {
+		t.Errorf("Url alias not applied / trailing slash not trimmed: %q", c.Url)
+	}
+	if c.User != "alice" {
+		t.Errorf("User alias not applied: %q", c.User)
+	}
+	if c.Password != "s3cret" {
+		t.Errorf("Password alias not applied: %q", c.Password)
+	}
+}
+
+func TestGetEnvironmentDefaultsFallbacks(t *testing.T) {
+	t.Setenv("ONLYOFFICE_CALENDAR_ID", "")
+	t.Setenv("ONLYOFFICE_PROJECT_ID", "")
+	t.Setenv("ONLYOFFICE_CALENDAR_PROJECT_ID", "")
+	d := GetEnvironmentDefaults()
+	if d.CalendarID != "1" || d.ProjectID != "33" {
+		t.Errorf("defaults: %+v", d)
+	}
+	t.Setenv("ONLYOFFICE_CALENDAR_PROJECT_ID", "7")
+	if got := GetEnvironmentDefaults().ProjectID; got != "7" {
+		t.Errorf("CalendarProjectId alias: %q", got)
+	}
+}

users.go

@@ -0,0 +1,93 @@
+package onlyoffice
+
+// User / People endpoints and associated entity types.
+
+import (
+	"context"
+	"encoding/json"
+	"time"
+)
+
+// User represents an OnlyOffice portal user. Fields reflect the full
+// /api/2.0/people/filter.json response; most are optional and returned
+// only in user-detail responses.
+type User struct {
+	ID               *string    `json:"id,omitempty"`
+	UserName         *string    `json:"userName,omitempty"`
+	IsVisitor        *bool      `json:"isVisitor,omitempty"`
+	FirstName        *string    `json:"firstName,omitempty"`
+	LastName         *string    `json:"lastName,omitempty"`
+	Email            *string    `json:"email,omitempty"`
+	Status           *int       `json:"status,omitempty"`
+	ActivationStatus *int       `json:"activationStatus,omitempty"`
+	Terminated       any        `json:"terminated,omitempty"`
+	Department       *string    `json:"department,omitempty"`
+	WorkFrom         *time.Time `json:"workFrom,omitempty"`
+	DisplayName      *string    `json:"displayName,omitempty"`
+	AvatarMedium     *string    `json:"avatarMedium,omitempty"`
+	Avatar           *string    `json:"avatar,omitempty"`
+	IsAdmin          *bool      `json:"isAdmin,omitempty"`
+	IsLDAP           *bool      `json:"isLDAP,omitempty"`
+	ListAdminModules []string   `json:"listAdminModules,omitempty"`
+	IsOwner          *bool      `json:"isOwner,omitempty"`
+	CultureName      *string    `json:"cultureName,omitempty"`
+	IsSSO            *bool      `json:"isSSO,omitempty"`
+	AvatarSmall      *string    `json:"avatarSmall,omitempty"`
+	QuotaLimit       *int       `json:"quotaLimit,omitempty"`
+	UsedSpace        *int       `json:"usedSpace,omitempty"`
+	DocsSpace        *int       `json:"docsSpace,omitempty"`
+	MailSpace        *int       `json:"mailSpace,omitempty"`
+	TalkSpace        *int       `json:"talkSpace,omitempty"`
+	ProfileURL       *string    `json:"profileUrl,omitempty"`
+	Title            *string    `json:"title,omitempty"`
+	Sex              *string    `json:"sex,omitempty"`
+	Lead             *string    `json:"lead,omitempty"`
+	Birthday         *time.Time `json:"birthday,omitempty"`
+	Location         *string    `json:"location,omitempty"`
+	Notes            *string    `json:"notes,omitempty"`
+	Contacts         []Contact  `json:"contacts,omitempty"`
+	Groups           []Group    `json:"groups,omitempty"`
+}
+
+// Contact is a typed contact entry attached to a User.
+type Contact struct {
+	Type  *string `json:"type,omitempty"`
+	Value *string `json:"value,omitempty"`
+}
+
+// Group is a portal user group.
+type Group struct {
+	ID      *string `json:"id,omitempty"`
+	Name    *string `json:"name,omitempty"`
+	Manager any     `json:"manager,omitempty"`
+}
+
+// GetUsers lists all portal users.
+func (c *Client) GetUsers() (list []*User, err error) {
+	return list, c.Query(Request{Uri: "/api/2.0/people/filter.json"},
+		&struct {
+			MetaResponse `json:",inline"`
+			Response     *[]*User `json:"response"`
+		}{Response: &list})
+}
+
+// SelfUserID returns the ID of the authenticated user (people/@self), cached.
+func (c *Client) SelfUserID(ctx context.Context) (string, error) {
+	if c.selfID != "" {
+		return c.selfID, nil
+	}
+	raw, err := c.getJSON(ctx, "/api/2.0/people/@self.json")
+	if err != nil {
+		return "", err
+	}
+	var env struct {
+		Response struct {
+			ID string `json:"id"`
+		} `json:"response"`
+	}
+	if err := json.Unmarshal(raw, &env); err != nil {
+		return "", err
+	}
+	c.selfID = env.Response.ID
+	return c.selfID, nil
+}