feat(webhooks): display webhook statistics (events received, polls skipped, last event) in status panel

server/routes/dashboard.js

@@ -803,6 +803,17 @@ router.get('/status', requireAuth, (req, res) => {
   }
 });
 
+// Webhook metrics — exposes global and per-instance webhook metrics for the
+// Webhooks Configuration panel. Available to all authenticated users.
+router.get('/webhook-metrics', requireAuth, (req, res) => {
+  try {
+    const { getGlobalWebhookMetrics } = require('../utils/cache');
+    res.json(getGlobalWebhookMetrics());
+  } catch (err) {
+    res.status(500).json({ error: 'Failed to get webhook metrics', details: err.message });
+  }
+});
+
 // Cover art proxy — fetches external poster images server-side so the
 // browser loads them from 'self' and the CSP img-src stays tight.
 // Requires authentication. Only proxies http/https URLs.