Replace notifications with activity feed

backend/routes/activityRoutes.js

@@ -0,0 +1,30 @@
+const express = require('express');
+
+const createActivityRouter = ({ pool }) => {
+  const router = express.Router();
+
+  const listActivity = async (req, res) => {
+    try {
+      const [rows] = await pool.query(
+        `SELECT id, type, title, message, link, created_at
+         FROM notifications
+         WHERE user_id = ?
+         ORDER BY created_at DESC
+         LIMIT 50`,
+        [req.user.id]
+      );
+      res.json(rows);
+    } catch (error) {
+      res.status(500).json({ error: error.message });
+    }
+  };
+
+  router.get('/activity', listActivity);
+  router.get('/notifications', listActivity);
+
+  return router;
+};
+
+module.exports = {
+  createActivityRouter,
+};