fix(thread-safety): lock disc_entries reads/writes in HookServer, remove debug logs

gui_2.py

@@ -792,7 +792,6 @@ class App:
   with self._disc_entries_lock:
    self.disc_entries = _parse_history_entries(disc_data.get("history", []), self.disc_roles)
   self.ai_status = f"discussion: {name}"
-  sys.stderr.write(f'[DEBUG] Switched to {name}. disc_entries len: {len(self.disc_entries)}\n')
 
  def _flush_disc_entries_to_project(self) -> None:
   history_strings = [project_manager.entry_to_str(e) for e in self.disc_entries]
@@ -1069,7 +1068,6 @@ class App:
       disc_data["last_updated"] = project_manager.now_ts()
      with self._disc_entries_lock:
       self.disc_entries.append(item)
-      print(f'[DEBUG] Added to disc_entries. Current len: {len(self.disc_entries)}')
 
  def _handle_approve_script(self) -> None:
   """Logic for approving a pending script via API hooks."""