feat: queue donor WhatsApp confirmations

artifacts/api-server/src/routes/notifications.ts

@@ -0,0 +1,36 @@
+import { Router, Request, Response } from "express";
+import { donorNotifications } from "../lib/mockDb.js";
+
+const router = Router();
+
+// ─── GET /notifications ───────────────────────────────────────────────────────
+// Full queue (most recent first). Useful for debugging/inspection.
+router.get("/notifications", (_req: Request, res: Response): void => {
+  res.json([...donorNotifications].reverse());
+});
+
+// ─── GET /notifications/pending ───────────────────────────────────────────────
+// Rows the external poller (OpenClaw) still needs to send via WhatsApp.
+router.get("/notifications/pending", (_req: Request, res: Response): void => {
+  res.json(donorNotifications.filter((n) => n.status === "pending"));
+});
+
+// ─── POST /notifications/:id/sent ─────────────────────────────────────────────
+// Marks a queued notification as delivered (or failed). Called by the poller
+// after it actually sends the WhatsApp message from the platform number.
+router.post(
+  "/notifications/:id/sent",
+  (req: Request, res: Response): void => {
+    const item = donorNotifications.find((n) => n.id === req.params.id);
+    if (!item) {
+      res.status(404).json({ error: "Not found" });
+      return;
+    }
+    const failed = req.body?.status === "failed";
+    item.status = failed ? "failed" : "sent";
+    item.sentAt = failed ? null : new Date().toISOString();
+    res.json(item);
+  }
+);
+
+export default router;