Module watcher 

File system watcher for incremental indexing

Watches project directories for changes and incrementally updates the index.

• Create/Modify: Re-index the changed file
• Delete: Remove file’s chunks from index
• Debounced: Waits for activity to settle before processing

Design: Non-blocking, runs in background task, doesn’t affect search performance.

Structs

UpdateResult

Result of processing file events for a project

WatcherManager

Manages file watchers for multiple projects

Enums

FileEvent

Events that trigger re-indexing