fix(feishu): persist dedup cache across gateway restarts via warmup (openclaw#31605) thanks @Sid-Qin

Verified:
- pnpm install --frozen-lockfile
- pnpm build
- pnpm check
- pnpm test:macmini (fails on unrelated baseline test: src/config/config.legacy-config-detection.rejects-routing-allowfrom.test.ts)

Co-authored-by: Sid-Qin <201593046+Sid-Qin@users.noreply.github.com>
Co-authored-by: Tak Hoffman <781889+Takhoffman@users.noreply.github.com>

extensions/feishu/src/dedup.ts

@@ -89,3 +89,12 @@ export async function hasRecordedMessagePersistent(
     return false;
   }
 }
+
+export async function warmupDedupFromDisk(
+  namespace: string,
+  log?: (...args: unknown[]) => void,
+): Promise<number> {
+  return persistentDedupe.warmup(namespace, (error) => {
+    log?.(`feishu-dedup: warmup disk error: ${String(error)}`);
+  });
+}