Lotus CIandClaude Opus 4.8
940d71da92
AEC/AGC audit fix + two hardening items from the engine review. - Add an `autoGainControl` capture param (UrlParams -> CallViewModel -> ConnectionFactory audioCaptureDefaults), mirroring echoCancellation/ noiseSuppression. Defaults true (unchanged); the host sets it false only for the ML tier so the browser's auto gain control doesn't fight the in-source ML denoiser (pumping). Echo cancellation stays on. Tests cover the URL parse and the audioCaptureDefaults wiring. - L1: init() now closes the owned AudioContext on a build failure (was orphaned; browsers cap live contexts, so repeated failures could exhaust them). - L2: buildGraph() disposes its partially-built nodes on failure (disposeGraph previously only cleaned the prior graph). Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>