fix(whatsapp): reconnect on crypto unhandled rejection

src/infra/unhandled-rejections.ts

@@ -0,0 +1,26 @@
+type UnhandledRejectionHandler = (reason: unknown) => boolean;
+
+const handlers = new Set<UnhandledRejectionHandler>();
+
+export function registerUnhandledRejectionHandler(
+  handler: UnhandledRejectionHandler,
+): () => void {
+  handlers.add(handler);
+  return () => {
+    handlers.delete(handler);
+  };
+}
+
+export function isUnhandledRejectionHandled(reason: unknown): boolean {
+  for (const handler of handlers) {
+    try {
+      if (handler(reason)) return true;
+    } catch (err) {
+      console.error(
+        "[clawdbot] Unhandled rejection handler failed:",
+        err instanceof Error ? (err.stack ?? err.message) : err,
+      );
+    }
+  }
+  return false;
+}