Add debug logging for push and Service Worker registration

server/src/routes/push.ts

@@ -22,6 +22,11 @@ router.get('/vapid-public-key', (_req, res) => {
   return res.json({ publicKey })
 })
 
+router.post('/debug-log', (req, res) => {
+  console.log('[CLIENT_DEBUG]', req.body)
+  return res.json({ success: true })
+})
+
 router.use(requireUser)
 
 router.get('/prefs', async (req: any, res) => {