refactor(types): auto -> None sweep across entire codebase

Applied 236 return type annotations to functions with no return values
across 100+ files (core modules, tests, scripts, simulations).
Added Phase 4 to python_style_refactor track for remaining 597 items
(untyped params, vars, and functions with return values).

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

tests/test_orchestration_logic.py

@@ -7,7 +7,7 @@ import multi_agent_conductor
 from models import Track, Ticket
 
 @pytest.fixture
-def mock_ai_client():
+def mock_ai_client() -> None:
  with patch("ai_client.send") as mock_send:
   yield mock_send
 
@@ -40,7 +40,7 @@ def test_generate_tickets(mock_ai_client):
  assert tickets[1]["id"] == "T-002"
  assert tickets[1]["depends_on"] == ["T-001"]
 
-def test_topological_sort():
+def test_topological_sort() -> None:
  tickets = [
   {"id": "T-002", "description": "Dep on 001", "depends_on": ["T-001"]},
   {"id": "T-001", "description": "Base", "depends_on": []},
@@ -51,7 +51,7 @@ def test_topological_sort():
  assert sorted_tickets[1]["id"] == "T-002"
  assert sorted_tickets[2]["id"] == "T-003"
 
-def test_topological_sort_circular():
+def test_topological_sort_circular() -> None:
  tickets = [
   {"id": "T-001", "depends_on": ["T-002"]},
   {"id": "T-002", "depends_on": ["T-001"]}
@@ -59,7 +59,7 @@ def test_topological_sort_circular():
  with pytest.raises(ValueError, match="Circular dependency detected"):
   conductor_tech_lead.topological_sort(tickets)
 
-def test_track_executable_tickets():
+def test_track_executable_tickets() -> None:
  t1 = Ticket(id="T1", description="desc", status="todo", assigned_to="user")
  t2 = Ticket(id="T2", description="desc", status="todo", assigned_to="user", depends_on=["T1"])
  track = Track(id="track_1", description="desc", tickets=[t1, t2])
@@ -73,7 +73,7 @@ def test_track_executable_tickets():
  assert executable[0].id == "T2"
 
 @pytest.mark.asyncio
-async def test_conductor_engine_run_linear():
+async def test_conductor_engine_run_linear() -> None:
  t1 = Ticket(id="T1", description="desc", status="todo", assigned_to="user")
  t2 = Ticket(id="T2", description="desc", status="todo", assigned_to="user", depends_on=["T1"])
  track = Track(id="track_1", description="desc", tickets=[t1, t2])
@@ -89,7 +89,7 @@ async def test_conductor_engine_run_linear():
   assert t2.status == "completed"
   assert mock_worker.call_count == 2
 
-def test_conductor_engine_parse_json_tickets():
+def test_conductor_engine_parse_json_tickets() -> None:
  track = Track(id="track_1", description="desc")
  engine = multi_agent_conductor.ConductorEngine(track)
  json_data = json.dumps([