The server keeps one small relay (32 MiB ahead, 8 behind) for Up next's first relayed item, keyed by its queue id at a URL that stays the same after the swap: fetched by the server for server-fetch links, fed by the adder's app for through-me links and files, by a member with an account for member-passed Jellyfin items. Every app preloads from it; the swap promotes it with its buffer. Dropped when the item stops being first or its adder leaves. Measured switch: ~1.6 s cold, 20-40 ms preloaded. ROADMAP gains the research item on server-side fetching of member-resolved URLs. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
apps/desktop
The Flutter desktop app (what users run; hosting runs the server from
packages/server on an isolate). Layout and rules:
../../docs/ARCHITECTURE.md. Build and test:
../../docs/DEVELOPMENT.md.