## Summary This fixes a minor bug I found #44981 - Fix percent-encoded filenames appearing in agent mentions after message submission. - Decode file:// paths in MentionUri::parse using the existing urlencoding crate (already used elsewhere in the codebase). - Add tests for non-ASCII file URIs. ## Screenshots <img width="409" height="116" alt="image" src="https://github.com/user-attachments/assets/32ef033b-6232-47c5-80c7-d5247d5dae88" />