Recursively indexes all text files in the given root_path.

WARNING: This will remove all existing index entries that start with this root_path before re-indexing.

Delete all indexed documents under the specified root path.

Search for documents matching the Japanese query string. Optionally filter by a root path and/or file extensions.

Args: query: Japanese search query limit: Max results to return path_filter: Only return results under this path extensions: List of file extensions to include (e.g., [".py", ".md"])

List paths of all indexed files with pagination.

Update the index for a single file. If the file exists, it is re-indexed. If the file does not exist, it is removed from the index.

Start watching a directory for changes and automatically update the index.

Get statistics about the current index and watched directories. Returns a JSON string containing:

• total_files: Number of indexed files

• total_size_bytes: Size of the SQLite database file

• last_scanned: Timestamp of the most recent indexing operation

• watched_directories: List of directories currently being watched