chore(tech-debt): Finalize gui_2.py cleanup and test suite discipline

tests/test_gui_phase4.py

@@ -4,32 +4,16 @@ from unittest.mock import MagicMock, patch
 from gui_2 import App
 from models import Track
 
-@pytest.fixture
-def mock_app() -> App:
- with (
-  patch('gui_2.load_config', return_value={
-    "ai": {"provider": "gemini", "model": "model-1"},
-    "projects": {"paths": [], "active": ""},
-    "gui": {"show_windows": {}}
-   }),
-  patch('gui_2.project_manager.load_project', return_value={}),
-  patch('gui_2.project_manager.migrate_from_legacy_config', return_value={}),
-  patch('gui_2.project_manager.save_project'),
-  patch('gui_2.session_logger.open_session'),
-  patch('gui_2.App._init_ai_and_hooks'),
-  patch('gui_2.App._fetch_models'),
-  patch('gui_2.App._prune_old_logs')
- ):
-  app = App()
-  app._discussion_names_dirty = True
-  app._discussion_names_cache = []
-  app.active_track = Track(id="track-1", description="Test Track", tickets=[])
-  app.active_tickets = []
-  app.ui_files_base_dir = "."
-  app.disc_roles = ["User", "AI"]
-  app.active_discussion = "main"
-  app.project = {"discussion": {"discussions": {"main": {"history": []}}}}
-  return app
+@pytest.fixture(autouse=True)
+def setup_mock_app(mock_app: App):
+ mock_app._discussion_names_dirty = True
+ mock_app._discussion_names_cache = []
+ mock_app.active_track = Track(id="track-1", description="Test Track", tickets=[])
+ mock_app.active_tickets = []
+ mock_app.ui_files_base_dir = "."
+ mock_app.disc_roles = ["User", "AI"]
+ mock_app.active_discussion = "main"
+ mock_app.project = {"discussion": {"discussions": {"main": {"history": []}}}}
 
 def test_add_ticket_logic(mock_app: App):
  # Mock imgui calls to simulate clicking "Create" in the form
@@ -109,6 +93,7 @@ def test_track_discussion_toggle(mock_app: App):
  with (
   patch('gui_2.imgui') as mock_imgui, 
   patch('gui_2.project_manager.load_track_history', return_value=["@2026-03-01 12:00:00\n[User]\nTrack Hello"]) as mock_load, 
+  patch('gui_2.project_manager.str_to_entry', side_effect=lambda s, roles: {"ts": "12:00", "role": "User", "content": s.split("\n")[-1]}),
   patch.object(mock_app, '_flush_disc_entries_to_project') as mock_flush, 
   patch.object(mock_app, '_switch_discussion') as mock_switch
  ):
@@ -162,8 +147,8 @@ def test_track_discussion_toggle(mock_app: App):
 
 def test_push_mma_state_update(mock_app: App):
  mock_app.active_tickets = [{"id": "T-001", "description": "desc", "status": "todo", "assigned_to": "tier3-worker", "depends_on": []}]
- with patch('gui_2.project_manager.save_track_state') as mock_save, \
-      patch('gui_2.project_manager.load_track_state', return_value=None):
+ with patch('project_manager.save_track_state') as mock_save, \
+      patch('project_manager.load_track_state', return_value=None):
   mock_app._push_mma_state_update()
   
   assert len(mock_app.active_track.tickets) == 1