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_conductor_api_hook_integration.py

@@ -55,7 +55,7 @@ def test_conductor_handles_api_hook_failure(live_gui):
   assert results["verification_successful"] is False
   assert "failed" in results["verification_message"]
 
-def test_conductor_handles_api_hook_connection_error():
+def test_conductor_handles_api_hook_connection_error() -> None:
  """
     Verify Conductor handles a simulated API hook connection error (server down).
     """