Add user feature permissions and unified account management

backend/app/services/email_recaps.py

@@ -178,6 +178,9 @@ def queue_test(user: dict, month: str | None, request_id: str) -> dict:
 
 def eligible_delivery(delivery: dict) -> tuple[dict, dict]:
     account = db.get_user_by_id(delivery["user_id"])
+    from ..feature_access import permissions
+    if not account or not permissions(account)["stats"]:
+        raise mail.DeliveryCancelled()
     sub = active_subscription(account) if account else None
     config = store.settings()
     ready, _ = delivery_ready()