refactor!: rename oo-cli → oo, split library by domain, relocate applications

BREAKING:
- Binary renamed oo-cli → oo; install path is now
  github.com/eslider/go-onlyoffice/cmd/oo.
- Former internal/cli tree removed; cobra commands live in cmd/oo/ as
  package main, split by domain (calendar.go, crm.go, tasks.go, apps.go,
  common.go, main.go).
- internal/applications moved to cmd/oo/applications/ (CV-specific workflow;
  not a library feature).
- examples/applications removed (it depended on an internal package).

Library split (mechanical, zero API surface change):
- client.go  — Client, Credentials, Defaults, env helpers, NewClient.
- request.go — Request, Query, Time, Token, MetaResponse, Permissions.
- auth.go    — Authenticate/AuthenticateContext/InvalidateToken.
- http.go    — transport + ResponseArray/ResponseObject/postFormObject/
               putFormObject/deleteObject/unmarshalResponseObject (renamed
               from httpx.go).
- projects.go, tasks.go, users.go, calendar.go, crm.go, files.go — typed
  / untyped domain methods. tasks_extra.go merged into tasks.go.
- onlyoffice.go deleted (content redistributed).

AGENTS.md, CHANGELOG.md, README.md updated accordingly.

Made-with: Cursor

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
+}