Benjamin Carlsson 64e9a68987 Add a helper-backed realtime WebRTC session API (#43097) ...

## What changed

- Add `RealtimeWebrtcSession` and cloneable handles for startup, answer negotiation, audio controls, level meters, and error reporting.
- Open devices after answer negotiation and apply the latest controls before enabling audio. Preserve subsequent control transitions in order and close the session if the command queue fills.
- Cancel pending work on explicit close, external cancellation, or final handle drop, with a shared runtime keeping helper reaping alive.
- Add audio-state polling to consume microphone and speaker peaks and detect helper, device, or connection failures.
- Check packaged helper/runtime availability and initialize build information in the standalone TUI for the helper handshake.

## Testing

Add unit and helper-process integration tests covering startup control ordering, queue overflow, cancellation, helper reaping and loss, package availability, SDP debug redaction, and peak accumulation, clamping, and consumption.

GitOrigin-RevId: 458cd80353697f7411cee785f380d1d53aef8416

2026-09-05 20:39:46 +00:00

..

mod.rs

Add a helper-backed realtime WebRTC session API (#43097)

2026-09-05 20:39:46 +00:00