fix: Robustness improvements for RAG tests and GUI stability

- Added import sys to src/api_hook_client.py.
- Fixed App.__getattr__ to use direct attribute access on controller to avoid recursion.
- Simplified _get_app_attr and _has_app_attr in src/api_hooks.py.
- Centralized RAG and symbol enrichment in AppController._handle_request_event.
- Updated 	ests/test_symbol_parsing.py to match the new enrichment flow.
- Removed redundant task appending from i_status and mma_status setters.
- Improved _sync_rag_engine to only set 'ready' status after indexing is confirmed.
- Updated 	est_status_encapsulation.py to reflect setter changes.

src/gui_2.py

@@ -118,6 +118,8 @@ class App:
   # --- Initialization ---
   self.controller.init_state()
   self.workspace_manager = workspace_manager.WorkspaceManager(project_root=self.controller.active_project_root)
+  self.disc_entries = self.controller.disc_entries
+  self.disc_roles = self.controller.disc_roles
   self.workspace_profiles = self.workspace_manager.load_all_profiles()
   self.controller.start_services(self)
   # --- Controller Callbacks & Actions ---
@@ -379,13 +381,19 @@ class App:
   if name == 'controller':
    raise AttributeError(name)
   try:
-   # Use object.__getattribute__ to avoid recursion if 'controller' isn't initialized yet
    ctrl = object.__getattribute__(self, 'controller')
   except AttributeError:
-   raise AttributeError(f"'{type(self).__name__}' object has no attribute '{name}'")
+   raise AttributeError(name)
+
+  if ctrl is not None:
+   try:
+    val = getattr(ctrl, name)
+    sys.stderr.write(f"[DEBUG __getattr__] name={name}, val_type={type(val).__name__}\n")
+    sys.stderr.flush()
+    return val
+   except AttributeError:
+    pass
 
-  if ctrl is not None and hasattr(ctrl, name):
-   return getattr(ctrl, name)
   raise AttributeError(f"'{type(self).__name__}' object has no attribute '{name}'")
 
  def __setattr__(self, name: str, value: Any) -> None: