- starsync://host:port/?name=&pw= (PROTOCOL.md "Invite link"); the password only when ticked, never in logs
- Linux: launcher entry takes x-scheme-handler/starsync (%u, StartupNotify) and becomes its xdg-mime default; Windows: HKCU\Software\Classes\starsync -> starsync.exe
- InstanceLock: lock file + loopback handoff per profile folder; the running app comes up with the second start's activation token (Wayland/X11) or AllowSetForegroundWindow (Windows)
- Sharing looks up the internet address (HTTPS services with fallbacks); members card picks Internet / Home network / VPN and says when the port needs forwarding
- JoinOffers: link and clipboard prompt with /health, joins through ConnectFlow; dismissed clipboard invites kept as fingerprints
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
- One server per app run (loopback, no password); Invite attaches an
all-interfaces listener to the same server and Stop sharing detaches
it (guests told with 4016); members, media and Up next never reset.
No solo mode: you're home on your own server unless in a friend's.
- Navigation: none / yours / friend; a join passes a version gate on
/health first (clear "they/you need to update", update offer).
- Invite as a value (host, port, name, password flag, version, fp
reserved); addresses filtered (loopback, link-local, 198.18/15,
bridges) and ranked; Sharing chip, Copy invite, Stop sharing.
- Alone looks like a plain player (alone replaces solo).
- AppGraph builds and disposes systems; widgets use AppScope;
SessionState deleted; a test caps the remaining singletons.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>