chore(conductor): Finalize track 'Robust JSON Parsing for Tech Lead' and cleanup static analysis

src/ai_client.py

@@ -814,7 +814,6 @@ def _send_gemini_cli(md_content: str, user_message: str, base_dir: str,
  qa_callback: Optional[Callable[[str], str]] = None,
  stream_callback: Optional[Callable[[str], None]] = None) -> str:
  global _gemini_cli_adapter
- import sys
  sys.stderr.write(f"[DEBUG] _send_gemini_cli running in module {__name__}, adapter is {_gemini_cli_adapter}\n")
  sys.stderr.flush()
  try: