Return the full markdown content of a note. source is in vault/relative/path.md format, as returned by search_notes. The full filesystem path is HOST_VAULT_PATH / source.

List note paths within a vault, optionally scoped to a subfolder. Returns paths in vault/relative/path.md format — the same format as the source field from search_notes — so results can be passed directly to read_note. Set recursive=False to list only the immediate folder (non-recursive).

Create a new note at source (vault/relative/path.md format). Refuses with a structured error if the target vault is not WRITE_VAULT. Refuses to overwrite an existing file unless overwrite=True. Creates intermediate directories as needed.

Update an existing note. mode must be 'overwrite' (replace entire content) or 'append' (add content to the end of the file). Refuses with a structured error if the target vault is not WRITE_VAULT.

Move a note to the .trash folder at the vault root rather than deleting it permanently. The directory structure within the vault is preserved under .trash so the file can be recovered if needed. Refuses with a structured error if the target vault is not WRITE_VAULT.

Move a note from source_path to dest_path (vault/relative/path.md format). Both paths must be within WRITE_VAULT. Fails if dest_path already exists — there is no overwrite option. If create_dirs=True (default), creates missing parent directories. After a successful move, wikilinks in all vault .md files that referenced the old filename are rewritten to use the new filename. Returns {"success": bool, "source": str, "destination": str, "links_updated": int}.

Pre-validate markdown content without writing it to disk. Returns {"valid": bool, "errors": [...], "warnings": [...]}. Use this to check content before calling create_note or update_note.