livekit-agents@1.8.2

### Optimizations

- **Run loop blocking detection.** The agent now detects code that blocks the
  asyncio event loop and surfaces the offending call in Agent Insights, so you
  can find stalls without attaching a profiler.
- **Faster agent startup.** The prefork server preloads libraries before
  forking, cutting agent startup time by up to 800ms.
- **Improved agent lifecycle tracing.** Traces now cover the full agent
  lifecycle, including initial dispatch latency, making it clear where time goes
  between a job request and a session going live.

## Full changelog
* feat(speechify): send Speechify-Caller-Version attribution header by @luke-speechify in https://github.com/livekit/agents/pull/7166
* fix(llm): reposition mid-conversation instructions for Gemini gateway and Mistral by @L65FREAD in https://github.com/livekit/agents/pull/6591
* feat(voice): log which participant RoomIO links to by @itsnicjohn in https://github.com/livekit/agents/pull/7210
* chore(openai): remove dead VertexModels type alias by @detail-app[bot] in https://github.com/livekit/agents/pull/7223
* fix: refuse to start a DuplexModel under a text simulation by @u9g in https://github.com/livekit/agents/pull/7236
* (deepgram stt): detect a silently dropped socket instead of hanging by @GregHolmes in https://github.com/livekit/agents/pull/7206
* fix(deps): pin anthropic below 1 by @omChauhanDev in https://github.com/livekit/agents/pull/7242
* Add Synthesia interactive-avatar plugin by @swarnimkulkarni-synth in https://github.com/livekit/agents/pull/7216
* feat(telemetry): trace the end-of-turn wait and the turn handoff by @davidzhao in https://github.com/livekit/agents/pull/7130
* feat(telemetry): trace dispatch, startup, and shutdown by @davidzhao in https://github.com/livekit/agents/pull/7131
* feat(telemetry): trace RPC calls made and handled by @davidzhao in https://github.com/livekit/agents/pull/7134
* feat(telemetry): interruption detail, handoff span, fallback events, text input by @davidzhao in https://github.com/livekit/agents/pull/7137
* feat(telemetry): one agent_turn span per speech handle by @davidzhao in https://github.com/livekit/agents/pull/7143
* tests: trace-shape schema and checker by @davidzhao in https://github.com/livekit/agents/pull/7148
* feat(elevenlabs): secondary languages and language detection for realtime STT by @captainbanan in https://github.com/livekit/agents/pull/6902
* fix(aio): drain blocked senders when closing channels by @Kuang-xianxin in https://github.com/livekit/agents/pull/7257
* fix(elevenlabs): remove the duplicated secondary_languages parameter by @longcw in https://github.com/livekit/agents/pull/7262
* fix(duplex): keep late transcripts on the audio they describe by @longcw in https://github.com/livekit/agents/pull/7264
* fix(room_io): frame output audio by a cap, not a fixed size by @longcw in https://github.com/livekit/agents/pull/7261
* fix(cli): prebuffer console playback so realtime-paced audio doesn't underrun by @u9g in https://github.com/livekit/agents/pull/7238
* fix(openai): ignore incomplete and duplicate GPT Live backend tool calls by @kiwijuicer in https://github.com/livekit/agents/pull/7230
* ipc: add room_id to job logging_extra by @andrewnitu in https://github.com/livekit/agents/pull/7241
* feat(rime): support Coda streaming in LiveKit by @naszzz in https://github.com/livekit/agents/pull/6978
* Migrate Speechmatics STT plugin to Agent STT by @Smiljanic19A in https://github.com/livekit/agents/pull/7028
* fix(openai): continue GPT Live only once every backend call is answered by @longcw in https://github.com/livekit/agents/pull/7266
* Revert "fix(room_io): frame output audio by a cap, not a fixed size (#7261)" by @longcw in https://github.com/livekit/agents/pull/7271
* fix(room_io): release a partial frame before the source runs dry by @longcw in https://github.com/livekit/agents/pull/7272
* fix: prevent llm fallback retries after output by @chenghao-mou in https://github.com/livekit/agents/pull/7233
* fix: reject inline tasks during agent handoff by @chenghao-mou in https://github.com/livekit/agents/pull/7268
* (gemini live): add new models by @tinalenguyen in https://github.com/livekit/agents/pull/7289
* livekit-agents@1.8.2 by @github-actions[bot] in https://github.com/livekit/agents/pull/7292

## New Contributors
* @L65FREAD made their first contribution in https://github.com/livekit/agents/pull/6591
* @GregHolmes made their first contribution in https://github.com/livekit/agents/pull/7206
* @swarnimkulkarni-synth made their first contribution in https://github.com/livekit/agents/pull/7216
* @kiwijuicer made their first contribution in https://github.com/livekit/agents/pull/7230
* @andrewnitu made their first contribution in https://github.com/livekit/agents/pull/7241
* @Smiljanic19A made their first contribution in https://github.com/livekit/agents/pull/7028

**Full Changelog**: https://github.com/livekit/agents/compare/livekit-agents@1.8.1...livekit-agents@1.8.2