Adds a groupId-based pairing system so devices can always see
each other regardless of network. Scan a QR code once from the
other device, and they're permanently linked via a shared group
stored in localStorage. No account, no email — just one-time QR
scan like Bluetooth pairing.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
iCloud Private Relay hides iPhones' real public IP, breaking
IP-based LAN grouping. Devices now detect their local IP
(192.168.x.x) via WebRTC ICE candidates and send it to the
server. The server groups devices by local subnet as a fallback
when public IPs differ.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
- Offline push-subscribed devices appear dimmed in peer list
- Tap offline peer to send wake push notification
- Skip self-notification (own deviceId excluded)
- iOS/Android share sheet via Web Share Target API
- Online/offline indicator dot on peer avatars
- Web Push API for offline device notifications
- Custom service worker with push event handling
- Local notifications for background tab transfers
- VAPID keys in K8s config
- Persistent deviceId per device
- Users set their own device name and optional profile picture
- Profile persisted in localStorage (no account needed)
- Auto-detect device type from user agent (iPhone, Mac, Android...)
- Server uses client-provided profile instead of generating names
- PeerAvatar shows photo or device icon instead of animal emojis
- ProfileSetup modal on first visit + editable from header
