PR for WorkspaceTracker FileSystemWatcher Leak (WorkspaceTracker_45)

This PR addresses the FileSystemWatcher leak in the WorkspaceTracker class, as identified in leak-report/guaranteed/WorkspaceTracker_45.md.

Description

The WorkspaceTracker class creates a FileSystemWatcher in its registerListeners method and adds it to a disposables array. However, the dispose() method of WorkspaceTracker currently only clears internal timers and does not dispose of the items in the disposables array, including the FileSystemWatcher. This leads to a resource leak when a WorkspaceTracker instance is disposed.

This patch updates the dispose() method in WorkspaceTracker.ts to iterate over and dispose of all items in the this.disposables array, ensuring the FileSystemWatcher is properly cleaned up.

Related Bug Report

#4236

Changes

• Modified src/integrations/workspace/WorkspaceTracker.ts:
  • Updated the dispose() method to include:

    this.disposables.forEach((d) => d.dispose());
    this.disposables = []; // Clear the array

How to Test

1. Open a workspace in VS Code with the Roo Code extension active.
2. Allow the WorkspaceTracker to initialize (e.g., by opening/closing files or tabs, or simply waiting a short period).
3. Simulate the disposal of the WorkspaceTracker instance. This might involve:
   • Closing the Roo Code webview panel if the WorkspaceTracker is tied to its lifecycle.
   • If testable in isolation, directly calling dispose() on a WorkspaceTracker instance.
4. Verify (e.g., through logging, or by checking for continued file system monitoring if possible) that the FileSystemWatcher created by the WorkspaceTracker is no longer active.

Closes: #4236