MNote local file editing

Use this skill only when the user asks to read, edit, summarize, search, or patch files in the current MNote workspace.

Rules:

Stay inside allowed roots returned by MNote.
Use mnote.context.snapshot or mnote.context.resolve_target to locate the workspace root, current document, and allowed context.
Prefer the agent runtime's own local file read/edit capability for Markdown files inside allowed roots.
Before writing, resolve the target and read the relevant file content with the agent's native file tools.
After writing, read the file back with the agent's native file tools and report changed files.
Do not use MNote file tools for pure chat.
If authorization is missing, ask the user to grant access instead of guessing a path.