feat(voice): add dynamic endpointing

[u9g]

Summary

• Port Python BaseEndpointing/DynamicEndpointing behavior and ExpFilter parity into the Node voice runtime.
• Wire endpointing state through AgentActivity and AudioRecognition, including VAD/STT, no-VAD realtime speech events, agent speech lifecycle, and endpointing option replacement.
• Add 1:1 parity coverage for all tests/test_endpointing.py cases plus target-specific runtime/update coverage and a changeset.

Verification

• pnpm test -- agents/src/voice/endpointing.test.ts agents/src/voice/audio_recognition_span.test.ts agents/src/voice/audio_recognition_handoff.test.ts agents/src/voice/turn_config/utils.test.ts agents/src/voice/agent.test.ts agents/src/voice/report.test.ts agents/src/voice/agent_activity.test.ts agents/src/voice/agent_activity_handoff.test.ts agents/src/voice/agent_session_handoff.test.ts
• pnpm --filter @livekit/agents build
• pnpm --filter @livekit/agents lint (passes with existing warnings)
• pnpm format:check
• pnpm --filter @livekit/agents-plugin-silero build
• pnpm --filter @livekit/agents api:check [blocked: API Extractor rejects the existing export * as ___ syntax in dist/index.d.ts]

Mapping Note

• Python AgentSession.update_options(endpointing_opts=...) has no current target AgentSession.updateOptions public API. The target AgentActivity.updateOptions and AudioRecognition.updateOptions endpointing replacement seams are wired and covered.

[changeset-bot]

🦋 Changeset detected

Latest commit: 28f4964

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 28 packages

Name	Type
@livekit/agents	Patch
@livekit/agents-plugin-anam	Patch
@livekit/agents-plugin-assemblyai	Patch
@livekit/agents-plugin-baseten	Patch
@livekit/agents-plugin-bey	Patch
@livekit/agents-plugin-cartesia	Patch
@livekit/agents-plugin-cerebras	Patch
@livekit/agents-plugin-deepgram	Patch
@livekit/agents-plugin-elevenlabs	Patch
@livekit/agents-plugin-google	Patch
@livekit/agents-plugin-hedra	Patch
@livekit/agents-plugin-inworld	Patch
@livekit/agents-plugin-lemonslice	Patch
@livekit/agents-plugin-liveavatar	Patch
@livekit/agents-plugin-livekit	Patch
@livekit/agents-plugin-minimax	Patch
@livekit/agents-plugin-mistral	Patch
@livekit/agents-plugin-neuphonic	Patch
@livekit/agents-plugin-openai	Patch
@livekit/agents-plugin-phonic	Patch
@livekit/agents-plugin-resemble	Patch
@livekit/agents-plugin-rime	Patch
@livekit/agents-plugin-runway	Patch
@livekit/agents-plugin-sarvam	Patch
@livekit/agents-plugin-silero	Patch
@livekit/agents-plugins-test	Patch
@livekit/agents-plugin-trugen	Patch
@livekit/agents-plugin-xai	Patch

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Click here if you're a maintainer who wants to add another changeset to this PR

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[devin-ai-integration]

✅ Devin Review: No Issues Found

Devin Review analyzed this PR and found no potential bugs to report.

View in Devin Review to see 7 additional findings.