feat(oo): file deep links, login check, replace-in (fresh upload)

- link: print Products/Files/DocEditor.aspx?fileid=… deep links (title+url)
- lib: FileEditorURL/FolderURL helpers (+tests)
- users check: verify credentials (userName vs email) via authentication.json
- projects files replace-in FOLDER_ID FILE...: hard delete same stem|ext in a
  folder + fresh upload → single clean version (no version history)

cmd/oo/projects_files.go

@@ -22,6 +22,7 @@ func projectFilesCmd() *cobra.Command {
 	}
 	cmd.AddCommand(prjFilesListCmd())
 	cmd.AddCommand(prjFilesUploadCmd())
+	cmd.AddCommand(prjFilesReplaceInCmd())
 	cmd.AddCommand(prjFilesUpdateCmd())
 	cmd.AddCommand(prjFilesDownloadCmd())
 	cmd.AddCommand(prjFilesRenameCmd())
@@ -150,6 +151,44 @@ Pass --no-replace to fail when the name is taken; --allow-duplicate to always cr
 	return cmd
 }
 
+func prjFilesReplaceInCmd() *cobra.Command {
+	return &cobra.Command{
+		Use:   "replace-in FOLDER_ID LOCAL_PATH [LOCAL_PATH...]",
+		Short: "Replace same-named file(s) in a folder: hard delete + fresh upload (no version history)",
+		Long: `Deletes any file in FOLDER_ID with the same stem|ext (hard delete — the CLI
+delete is permanent) and uploads the local file fresh. Unlike 'update' this
+leaves a single clean version, which matters when the file id is shared.
+
+Note: file ids are server-assigned; a fresh upload gets a new id.`,
+		Args: cobra.MinimumNArgs(2),
+		RunE: func(cmd *cobra.Command, args []string) error {
+			c, err := newOO(cmd)
+			if err != nil {
+				return err
+			}
+			folderID := args[0]
+			for _, p := range args[1:] {
+				stem := onlyoffice.UploadStemFromLocal(p)
+				ext := onlyoffice.UploadExtFromLocal(p)
+				deleted, derr := c.DeleteFilesByDedupKey(cmd.Context(), folderID, stem, ext)
+				if derr != nil {
+					return derr
+				}
+				ent, uerr := c.UploadToFolder(cmd.Context(), folderID, p)
+				if uerr != nil {
+					return uerr
+				}
+				obj := fileEntryToMap(ent)
+				if len(deleted) > 0 {
+					obj["replaced_file_ids"] = deleted
+				}
+				printObject(obj)
+			}
+			return nil
+		},
+	}
+}
+
 func prjFilesUpdateCmd() *cobra.Command {
 	return &cobra.Command{
 		Use:   "update FILE_ID LOCAL_PATH",