Fix: Redirect Python logs to stderr to prevent JSON corruption in stdout

gtm_architect_orchestrator.py

@@ -30,7 +30,7 @@ logging.basicConfig(
     format='%(asctime)s - %(levelname)s - %(message)s',
     handlers=[
         logging.FileHandler(log_file_path, mode='a', encoding='utf-8'),
-        logging.StreamHandler(sys.stdout)
+        logging.StreamHandler(sys.stderr)
     ]
 )
 logging.info(f"GTM Architect Orchestrator v{ORCHESTRATOR_VERSION} ({run_timestamp}) starting...")