offline cold-open + push · proof of concept
Install to Home Screen (Share → Add to Home Screen). Open it once online so the shell caches. Then turn on Airplane mode, fully close the app, and re-open from the icon. If this screen loads with the dot below still green offline, cold-open works.
1. Tap Enable (must be inside the installed app on iOS). 2. Copy the send URL below to your laptop. 3. Fully close the app + lock the phone. 4. Open the send URL on the laptop — a notification should land on the lock screen.
Send URL: enable first