Background

Khoj chat supports query filters. These allow you to filter notes, documents to use by Khoj for its response (by filename, date range and words).

Currently you need type the whole filepath manually in the file query filter. This is pointlessly annoying.

Feature

When you type file: you should see list of all synced files to auto-complete. This list should be filtered down as you type more letters (e.g file:Task should only show tasks.org or TaskList.md from my documents) as auto-complete suggestions.