fix: file watcher tests failing

[ErikBjare]

Two tests in test_watcher.py are failing:

1. test_file_watcher_basic: Watcher not detecting file updates

   • Expected len(results) == 1, got 0
   • Suggests watcher isn't picking up file modifications

2. test_file_watcher_move: TypeError in metadata access

   • TypeError: 'NoneType' object is not subscriptable
   • Suggests search result is None when it should contain metadata

These failures appeared in the test workflow for v0.5.0 release.

Related commit: 959f7a7