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>

scripts/claude_mma_exec.py

@@ -253,7 +253,7 @@ def create_parser():
     return parser
 
 
-def main():
+def main() -> None:
     parser = create_parser()
     args = parser.parse_args()
     role = args.role