[antonreshetov]

Summary

Adds editing and organization of notes, snippets, folders and HTTP requests to the MCP server. Edits are protected by a new opt-in preference, and writes are checked against concurrent changes.

Changes

• New MCP tools: list_structure, list_items, update_note, update_snippet, trash_item, restore_item, create_folder, update_folder, delete_folder, move_items, get_note_links.
• create_note and create_snippet accept folderId and tags.
• Optimistic concurrency: items expose contentRevision. A write with a stale revision returns CONFLICT.
• Clearer errors for invalid names: the error explains the reason and lists forbidden characters.
• New preference api.mcp.allowEdits ("Allow MCP to modify existing items"). All tools that change existing items, including update_http_request, return EDITING_DISABLED while it is off.
• list_http_requests accepts status: active | trash, so request IDs can be found for restore_item.
• trash_item clears folderId, matching the app.
• delete_folder removes only empty folders: subfolders, active items or files that massCode does not manage block deletion.
• Storage: getUnmanagedFiles for code and notes folders, and a fix that prevents a folder from becoming its own parent.
• Docs: MCP guide, documentation index and README updated; Claude Code is listed first.

Behavior changes and migration

• api.mcp.allowEdits is enabled automatically for users who already have MCP enabled, so their current behavior is preserved. New users get it disabled by default.
• For new users, update_http_request requires allowEdits. Until they enable it, the tool returns EDITING_DISABLED.

Testing

• Vitest: src/main/api/mcp, store preferences, storage folders (257 tests).
• ESLint on the changed files.
• TypeScript check for the main process.
• VitePress docs build.
• Manual check of all tools through Claude Code on a dev build.

Known limitations

• Autosave of a note that is open in the editor can overwrite an edit made through MCP.
• Rolling back the runtime cache when a write fails is moved to a separate task.