Push Lab
Standalone iOS Web Push test harness — not a real app, a diagnostic surface.
Subscribe
Send Test Push
Refresh Status
Capability probes
Send w/ Action Buttons
Send w/ tag+renotify (x2, replaces)
Set Badge = 5
Clear Badge
Send Silent (no sound/vibrate)
Load Server Events
display-mode
Notification.permission
serviceWorker.controller
subscription endpoint
Server-side events (SW beacons — the reliable ground truth)