M2 promotes the M1 standalone PoC into the datarhei Core binary so
WebRTC becomes a first-class output alongside RTMP/SRT/HLS, surfaced
in the core-ui dashboard.
Architecture: new app/webrtc sibling subsystem + two small hooks on
restream (ProcessHooks + AppendOutput), reusing the untouched M1
core/webrtc package. WHEP served under /api/v3/process/{id}/whep,
inheriting JWT auth. A new "Live (WebRTC)" tab on the process detail
view provides the embedded browser player.
Covers: purpose, architecture diagram, decision table, components,
data flow (enable/subscribe/stop/disable/restart), error handling,
testing strategy (unit/integration/e2e), acceptance criteria,
rollback, and a seven-milestone sanity breakdown.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
