feat(meetings): LiveKit SFU — phase 2 (client media plane, behind the flag)

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Meeting media flows through LiveKit when the server reports sfu:true; otherwise the
P2P mesh is unchanged. Reuses the ENTIRE existing meeting UI + WS control plane
(join/host/mute/screen/recording/transcript) and only swaps the transport:
- vendored livekit-client 2.20 UMD (lazy-loaded; no build step).
- sfuInit() reads /api/meetings/config at boot; sfuConnect() joins the LiveKit room
  with the minted token after the WS meeting-join.
- remote tracks map back to the WS peerId via uid (LiveKit identity = app user id);
  per-peer stream prefers screen over camera, driving the existing sharing/stage UI.
- toggleMic/Cam/Screen publish via LiveKit; local tracks reflected into meetLocalStream
  so tiles, active-speaker meter, canvas recording and transcript keep working.
- meetMakePeer/peer-joined/peer-left/leaveMeeting branch on SFU.on; mesh path intact.

Needs a running LiveKit server + live test (phase 3 ops) to exercise end-to-end.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

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Sravan

2026-07-06 13:20:59 +05:30

parent f1dbcd0f86

commit 6118d59c5c

2 changed files with 87 additions and 3 deletions

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server/public/vendor/livekit-client.umd.min.js

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