fa407700e0
Document the gamescope multi-user (independent-desktops) research and defer it: the current shared host-lifetime input/audio/mic vs the per-session plumbing it would need — per-instance EIS sockets + a per-session injector + per-session null-sink audio routing + per-session mic — and why it's not worth it now (a large multi-file refactor for the niche multi-user-on-one-box case, while the common multi-device scenario is already covered by the shared-desktop multi-view concurrency that landed). New gamescope-multiuser.md + roadmap section 14 (concurrent sessions: multi-view done, multi-user deferred). Also park render->capture in section 12: pipewire-rs 0.9.2 exposes no buffer-meta / raw-pointer / stream-timing API, so reading SPA_META_Header.pts would need raw spa_sys FFI into the working capture hot path — disproportionate for the smallest glass-to-glass term; g2g is effectively complete as capture->present (the stage-2 presenter measures it). Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>