* main: (267 commits)
  AGT-2328: negative threshold in silero (livekit#4228)
  disable interruptions for agent greeting (livekit#4223)
  feature: GPT-5.2 support (livekit#4235)
  turn-detector: remove english model from readme (livekit#4233)
  add keep alive task for liveavatar plugin (livekit#4231)
  feat(warm-transfer): add sip_number parameter for outbound caller ID (livekit#4216)
  fix blocked send task in liveavatar plugin (livekit#4214)
  clear _q_updated right after await to avoid race conditions (livekit#4209)
  ensure playback_segments_count is consistent in the audio output chain (livekit#4211)
  fix inworld punctuation handling (livekit#4215)
  Inference: Rename fallback model name param (livekit#4202)
  fix race condition when stop background audio play handle (livekit#4197)
  fix watchfiles prevent agent prcoess exit on sigterm (livekit#4194)
  feat(google): add streaming support for Gemini TTS models (livekit#4189)
  Add LiveAvatar Stop Session API Call + README Fix (livekit#4195)
  Fallback API for Inference (livekit#4099)
  feat(rime): expand update_options to accept all TTS parameters (livekit#4095)
  mistralai models update (livekit#4156)
  fix record.exc_info is not pickable when using LogQueueHandler (livekit#4185)
  Restore otel chat message (livekit#4118)
  ...