Refactor: implemented Repository Factory and Async Mutator Engine. Decoupled storage logic and enforced Dependency Injection across CLI and Web API. Updated documentation.

decnet/web/router/stats/api_get_stats.py

@@ -9,6 +9,6 @@ router = APIRouter()
 
 
 @router.get("/stats", response_model=StatsResponse, tags=["Observability"],
-    responses={401: {"description": "Not authenticated"}, 422: {"description": "Validation error"}},)
+    responses={401: {"description": "Could not validate credentials"}, 422: {"description": "Validation error"}},)
 async def get_stats(current_user: str = Depends(get_current_user)) -> dict[str, Any]:
     return await repo.get_stats_summary()