fix: remove dead code config.get experience

src/main.py

@@ -23,7 +23,7 @@ from src.daemon.health import HealthChecker
 from src.daemon.experience import ExperienceDistiller, ExperienceStore
 from src.daemon.inbox import InboxWatcher
 from src.daemon.guardrails import GuardrailEngine
-from src.utils import get_data_root
+import src.utils as _utils
 
 from src.api.blackboard_routes import router as blackboard_router
 from src.api.checkpoint_routes import router as checkpoint_router
@@ -86,7 +86,7 @@ config = load_config()
 # 全局组件
 # ---------------------------------------------------------------------------
 
-DATA_ROOT = get_data_root()
+DATA_ROOT = _utils.get_data_root()
 
 ticker: Optional[Ticker] = None
 
@@ -199,7 +199,6 @@ async def lifespan(app: FastAPI):
     )
 
     # ExperienceDistiller（经验自动蒸馏）
-    config.get("experience", {})
     experience_distiller = ExperienceDistiller(
         store=ExperienceStore(store_path=DATA_ROOT / "experiences.jsonl"),
     )