chore: move business tooling out of the public library; tidy filestore naming

Keep the public tree project-generic. Business/one-off tools, deployment
and business docs move to the private oo-workspace repo.

Moved to oo-workspace:
- cmd/ooscan, cmd/pdfamount, cmd/kontoblatt, cmd/kontolink
- internal/xlspipe (cutover-portugal workbook) -> oow workbook build
  (drops the --template/--title flags from oo docs put-xlsx)
- deploy/docker-compose.rclone-webdav.yml + docs/rclone-webdav.md
- docs/crm-associations.md

Removed GitHub-era leftovers:
- .github/workflows/release-please.yml, release-please-config.json,
  .release-please-manifest.json (tags are created on Gitea per SemVer)

Naming: the FileStore subsystem is now filestore_*.go (was file_*.go) to
match files_*.go (project Documents). Docs/AGENTS/README updated.

cmd/oo/docs.go

@@ -14,7 +14,6 @@ import (
 
 	onlyoffice "github.com/eslider/go-onlyoffice"
 	"github.com/eslider/go-onlyoffice/internal/docpipe"
-	"github.com/eslider/go-onlyoffice/internal/xlspipe"
 	"github.com/spf13/cobra"
 )
 
@@ -31,7 +30,7 @@ func docsCmd() *cobra.Command {
 OnlyOffice Documents UI is poor for .md/.txt — keep sources in git, store .docx in OO.
 Upload Markdown as DOCX:  oo docs put-md PROJECT_ID file.md
 Upload plain text:        oo docs put-txt PROJECT_ID file.txt  (preserves line breaks)
-Upload/generate XLSX:     oo docs put-xlsx PROJECT_ID [--template cutover-portugal | FILE.xlsx]
+Upload XLSX:              oo docs put-xlsx PROJECT_ID FILE.xlsx
 Read an OO file as MD:    oo docs as-md FILE_ID
 OCR a scan locally:       oo docs ocr scan.pdf --md out.md
 Structured OCR (hOCR→MD): oo docs hocr scan.jpg --md out.md --yaml out.yml`,
@@ -810,64 +809,27 @@ func docsPutTxtCmd() *cobra.Command {
 }
 
 func docsPutXlsxCmd() *cobra.Command {
-	var folderID, template, title, keepLocal string
+	var folderID, keepLocal string
 	var replace bool
 	cmd := &cobra.Command{
-		Use:   "put-xlsx PROJECT_ID [LOCAL_XLSX]",
-		Short: "Upload or generate an XLSX workbook into a project (excelize templates with formulas)",
-		Long: `Spreadsheets live in OnlyOffice — not in git. Generate multi-sheet workbooks with
-formulas (SUM/AVG, cross-sheet refs, named inputs) via --template, or upload an existing .xlsx.
+		Use:   "put-xlsx PROJECT_ID LOCAL_XLSX",
+		Short: "Upload an XLSX workbook into a project (upsert by stem|ext)",
+		Long: `Spreadsheets live in OnlyOffice — not in git. Uploads an existing .xlsx into the
+project Documents (or --folder), replacing the same stem|ext by default.
 
-  oo docs put-xlsx 218 --template cutover-portugal
-  oo docs put-xlsx 218 --template cutover-portugal --title 2026-08-28-cutover-budget.xlsx
   oo docs put-xlsx 218 ./my.xlsx`,
-		Args: cobra.RangeArgs(1, 2),
+		Args: cobra.ExactArgs(2),
 		RunE: func(cmd *cobra.Command, args []string) error {
 			pid := args[0]
 			c, err := newOO(cmd)
 			if err != nil {
 				return err
 			}
-			dir, err := os.MkdirTemp("", "oo-docs-put-xlsx-*")
-			if err != nil {
-				return err
-			}
-			defer os.RemoveAll(dir)
-
-			var xlsxPath string
-			var srcLabel string
-			switch {
-			case template != "":
-				wb, err := xlspipe.BuildTemplate(template)
-				if err != nil {
-					return err
-				}
-				name := title
-				if name == "" {
-					name = "cutover-budget.xlsx"
-					if template == xlspipe.TemplateCutoverPortugal {
-						name = "2026-08-28-cutover-budget.xlsx"
-					}
-				}
-				if !strings.HasSuffix(strings.ToLower(name), ".xlsx") {
-					name += ".xlsx"
-				}
-				xlsxPath = filepath.Join(dir, name)
-				if err := xlspipe.Save(wb, xlsxPath); err != nil {
-					wb.Close()
-					return err
-				}
-				wb.Close()
-				srcLabel = "template:" + template
-			case len(args) == 2:
-				xlsxPath = args[1]
-				if docpipe.Ext(xlsxPath) != ".xlsx" {
-					return fmt.Errorf("expected .xlsx, got %s", docpipe.Ext(xlsxPath))
-				}
-				srcLabel = xlsxPath
-			default:
-				return fmt.Errorf("pass LOCAL_XLSX or --template")
+			xlsxPath := args[1]
+			if docpipe.Ext(xlsxPath) != ".xlsx" {
+				return fmt.Errorf("expected .xlsx, got %s", docpipe.Ext(xlsxPath))
 			}
+			srcLabel := xlsxPath
 
 			if keepLocal != "" {
 				b, err := os.ReadFile(xlsxPath)
@@ -903,9 +865,7 @@ formulas (SUM/AVG, cross-sheet refs, named inputs) via --template, or upload an
 		},
 	}
 	cmd.Flags().StringVar(&folderID, "folder", "", "Documents folder id (default: project root)")
-	cmd.Flags().StringVar(&template, "template", "", "built-in workbook template (cutover-portugal)")
-	cmd.Flags().StringVar(&title, "title", "", "upload file name when using --template")
-	cmd.Flags().StringVar(&keepLocal, "keep-xlsx", "", "also write generated/uploaded bytes to this local path")
+	cmd.Flags().StringVar(&keepLocal, "keep-xlsx", "", "also copy the uploaded bytes to this local path")
 	cmd.Flags().BoolVar(&replace, "replace", true, "replace same stem|ext before upload (default); false = fail if name taken")
 	return cmd
 }

cmd/oo/invoices.go

@@ -91,7 +91,7 @@ func invoiceCreateCmd() *cobra.Command {
 		Long: `Create a CRM invoice (Draft) with a single line.
 
 Always pass --opportunity when a deal exists (entity link at create). Updating
---opportunity later often fails with HTTP 400 — see docs/crm-associations.md.
+--opportunity later often fails with HTTP 400 — see the CRM association rules.
 
 Example:
   oo invoices create --number INV-2026-01 --contact CONTACT_ID --item ITEM_ID \
@@ -108,7 +108,7 @@ Example:
 				issueDate = issueDate + "T00:00:00.0000000+01:00"
 			}
 			if dueDate == "" {
-				dueDate = time.Now().Add(14 * 24 * time.Hour).Format("2006-01-02") + "T00:00:00.0000000+01:00"
+				dueDate = time.Now().Add(14*24*time.Hour).Format("2006-01-02") + "T00:00:00.0000000+01:00"
 			} else if !strings.Contains(dueDate, "T") {
 				dueDate = dueDate + "T00:00:00.0000000+01:00"
 			}
@@ -175,7 +175,7 @@ func invoiceUpdateCmd() *cobra.Command {
 		Long: `Update Draft invoice fields.
 
 --opportunity often returns HTTP 400 on existing invoices. Prefer
-oo invoices create … --opportunity, or delete+recreate. See docs/crm-associations.md.
+oo invoices create … --opportunity, or delete+recreate. See the CRM association rules.
 `,
 		Args: cobra.ExactArgs(1),
 		RunE: func(cmd *cobra.Command, args []string) error {
@@ -274,7 +274,7 @@ func invoiceStatusCmd() *cobra.Command {
 		Long: `PUT /api/2.0/crm/invoice/status/{id}.
 
 Billed invoices are not content-editable. Billed→Draft often does not work —
-recreate as Draft instead (docs/crm-associations.md).
+recreate as Draft instead (the CRM association rules).
 `,
 		Args: cobra.MinimumNArgs(1),
 		RunE: func(cmd *cobra.Command, args []string) error {

cmd/oo/main.go

@@ -22,7 +22,7 @@
 //	oo search        QUERY [--content] [--folder ID] [--limit N] [--backend oo|own] [--json]
 //	oo index         folder FOLDER_ID | files FILE_ID... [--recursive] [--exts pdf] [--dry-run]
 //
-// CRM association rules: docs/crm-associations.md
+// CRM association rules live with the private oo-workspace tooling.
 //
 // Every list supports `--output/-o json|table` (table is the default).
 //