Prime shared announcements on startup

services/config.py

@@ -244,6 +244,7 @@ class ConfigStore:
                 "2. 或者在 config.json 中填写：\n"
                 '   "auth-key": "your_real_auth_key"'
             )
+        self._prime_shared_announcements()
 
     def _load(self) -> dict[str, object]:
         return _read_json_object(self.path, name="config.json")
@@ -494,9 +495,18 @@ class ConfigStore:
         if isinstance(state, dict) and "items" in state:
             return shared_items
         if local_items:
+            print(f"[announcements] Migrating local announcements to shared storage: {len(local_items)} items")
             self._save_shared_announcements(local_items)
         return local_items
 
+    def _prime_shared_announcements(self) -> None:
+        if not os.getenv("SHARED_USER_DATABASE_URL", "").strip():
+            return
+        try:
+            self._load_announcements()
+        except Exception as exc:
+            print(f"[announcements] prime shared announcements failed: {exc}")
+
     def _save_shared_announcements(self, items: list[dict[str, object]]) -> list[dict[str, object]]:
         normalized = _normalize_announcements(items)
         storage = self._shared_announcements_storage()