fix: remove dead code config.get experience

src/api/blackboard_routes.py

@@ -15,7 +15,7 @@ from src.blackboard.queries import Queries
 from src.blackboard.db import VALID_STATUSES, OUTPUT_TYPES
 from src.blackboard.registry import ProjectRegistry
 
-from src.utils import get_data_root
+import src.utils as _utils
 
 router = APIRouter(prefix="/api/projects/{project_id}", tags=["blackboard"])
 
@@ -27,7 +27,7 @@ def _validate_project(project_id: str) -> str:
     """校验 project_id，已知项目/虚拟项目放行，未知项目返回 400"""
     if project_id in _VIRTUAL_PROJECTS:
         return project_id
-    reg = ProjectRegistry(get_data_root())
+    reg = ProjectRegistry(_utils.get_data_root())
     if reg.get_project(project_id):
         return project_id
     raise HTTPException(400, {
@@ -43,12 +43,12 @@ def _validate_project(project_id: str) -> str:
 
 def _bb(project_id: str) -> Blackboard:
     _validate_project(project_id)
-    return Blackboard(get_data_root() / project_id / "blackboard.db")
+    return Blackboard(_utils.get_data_root() / project_id / "blackboard.db")
 
 
 def _q(project_id: str) -> Queries:
     _validate_project(project_id)
-    return Queries(get_data_root() / project_id / "blackboard.db")
+    return Queries(_utils.get_data_root() / project_id / "blackboard.db")
 
 
 # --- Tasks ---
@@ -100,7 +100,7 @@ async def create_task(project_id: str, body: Dict[str, Any]):
         date_str = datetime.now().strftime('%Y%m%d')
         # seq: 查当前项目最大 seq
         import sqlite3
-        db_path = get_data_root() / project_id / "blackboard.db"
+        db_path = _utils.get_data_root() / project_id / "blackboard.db"
         try:
             conn = sqlite3.connect(str(db_path), timeout=5)
             max_id_row = conn.execute(