Implement debouncing for Telegram status message edits:
This prevents hitting Telegram rate limits when subagent iterates quickly.
Files: Worker.hs (add debounce logic)
Merged debounced Telegram status updates in Worker; adds buffered updates and 3s flush window with forced flush on completion/failure.
Implemented debounced Telegram status edits with buffered pending updates and a 3s flush loop; added final flush/stop on completion and failure. bild Omni/Agent/Subagent/Worker.hs timed out after 10 minutes.