feat(mma): complete Phase 6 and finalize Comprehensive GUI UX track

- Implement Live Worker Streaming: wire ai_client.comms_log_callback to Tier 3 streams
- Add Parallel DAG Execution using asyncio.gather for non-dependent tickets
- Implement Automatic Retry with Model Escalation (Flash-Lite -> Flash -> Pro)
- Add Tier Model Configuration UI to MMA Dashboard with project TOML persistence
- Fix FPS reporting in PerformanceMonitor to prevent transient 0.0 values
- Update Ticket model with retry_count and dictionary-like access
- Stabilize Gemini CLI integration tests and handle script approval events in simulations
- Finalize and verify all 6 phases of the implementation plan

tests/test_phase6_engine.py

@@ -0,0 +1,98 @@
+import pytest
+from unittest.mock import MagicMock, patch, AsyncMock
+import asyncio
+import json
+import multi_agent_conductor
+from multi_agent_conductor import ConductorEngine, run_worker_lifecycle
+from models import Ticket, Track, WorkerContext
+
+def test_worker_streaming_intermediate():
+ ticket = Ticket(id="T-001", description="Test", status="todo", assigned_to="worker")
+ context = WorkerContext(ticket_id="T-001", model_name="test-model", messages=[])
+ event_queue = MagicMock()
+ event_queue.put = AsyncMock()
+ loop = MagicMock()
+
+ with (
+  patch("ai_client.send") as mock_send, 
+  patch("multi_agent_conductor._queue_put") as mock_q_put, 
+  patch("multi_agent_conductor.confirm_spawn", return_value=(True, "p", "c")), 
+  patch("ai_client.reset_session"), 
+  patch("ai_client.set_provider"), 
+  patch("ai_client.get_provider"), 
+  patch("ai_client.get_comms_log", return_value=[])
+ ):
+
+  def side_effect(*args, **kwargs):
+   import ai_client
+   cb = ai_client.comms_log_callback
+   if cb:
+    cb({"kind": "tool_call", "payload": {"name": "test_tool", "script": "echo hello"}})
+    cb({"kind": "tool_result", "payload": {"name": "test_tool", "output": "hello"}})
+   return "DONE"
+  
+  mock_send.side_effect = side_effect
+  run_worker_lifecycle(ticket, context, event_queue=event_queue, loop=loop)
+
+  responses = [call.args[3] for call in mock_q_put.call_args_list if call.args[2] == "response"]
+  assert any("[TOOL CALL]" in r.get("text", "") for r in responses)
+  assert any("[TOOL RESULT]" in r.get("text", "") for r in responses)
+
+def test_per_tier_model_persistence():
+ # Mock UI frameworks before importing gui_2
+ mock_imgui = MagicMock()
+ with patch.dict("sys.modules", {
+  "imgui_bundle": MagicMock(),
+  "imgui_bundle.imgui": mock_imgui,
+  "imgui_bundle.hello_imgui": MagicMock(),
+  "imgui_bundle.immapp": MagicMock(),
+ }):
+  from gui_2 import App
+  with (
+   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.save_config"), 
+   patch("gui_2.theme.load_from_config"), 
+   patch("gui_2.ai_client.set_provider"), 
+   patch("gui_2.ai_client.list_models", return_value=["gpt-4", "claude-3"]), 
+   patch("gui_2.PerformanceMonitor"), 
+   patch("gui_2.api_hooks.HookServer"), 
+   patch("gui_2.session_logger.open_session")
+  ):
+   
+   app = App()
+   app.available_models = ["gpt-4", "claude-3"]
+   
+   tier = "Tier 3"
+   model = "claude-3"
+   
+   # Simulate 'Tier Model Config' UI logic
+   app.mma_tier_usage[tier]["model"] = model
+   app.project.setdefault("mma", {}).setdefault("tier_models", {})[tier] = model
+   
+   assert app.project["mma"]["tier_models"][tier] == model
+
+@pytest.mark.asyncio
+async def test_retry_escalation():
+ ticket = Ticket(id="T-001", description="Test", status="todo", assigned_to="worker")
+ track = Track(id="TR-001", description="Track", tickets=[ticket])
+ event_queue = MagicMock()
+ event_queue.put = AsyncMock()
+ engine = ConductorEngine(track, event_queue=event_queue)
+ engine.engine.auto_queue = True
+ 
+ with patch("multi_agent_conductor.run_worker_lifecycle") as mock_lifecycle:
+  def lifecycle_side_effect(t, *args, **kwargs):
+   t.status = "blocked"
+   return "BLOCKED"
+  mock_lifecycle.side_effect = lifecycle_side_effect
+  
+  with patch.object(engine.engine, "tick") as mock_tick:
+   # First tick returns ticket, second tick returns empty list to stop loop
+   mock_tick.side_effect = [[ticket], []]
+   
+   await engine.run()
+   
+   assert ticket.retry_count == 1
+   assert ticket.status == "todo"