fix(avatar): skip removal when participant missing

[rosetta-livekit-bot]

Summary

• Port Python avatar cleanup behavior from fix(avatar): skip removal if avatar not found in the room agents#6486.
• Skip warning when avatar participant removal fails because the participant is already absent from the room.
• Keep warning behavior for all other removal failures.
• Add focused cleanup/error-branch tests and a patch changeset for @livekit/agents.

Source diff coverage

Classification

• livekit-agents/livekit/agents/voice/avatar/_types.py: ported to agents/src/voice/avatar/avatar_session.ts. The Python change catches LiveKit API TwirpError with code == "not_found" during avatar participant removal and logs debug instead of warning. The JS SDK does not export TwirpError, so this was adapted to a structural code === "not_found" check on the caught error while preserving warning behavior for all other errors.
• Source tests: the Python diff added none. Focused JS regressions were added to cover both error branches, participant-removal arguments, listener cleanup, and resolved shutdown.

Validation

• Exact head: a5bf1ebb17b4d16d827d8aea57cffc86c713b649.
• pnpm test -- agents/src/voice/avatar/avatar_session.test.ts passed: 4/4.
• pnpm --filter @livekit/agents build passed.
• Isolated package lint passed with no errors and pre-existing warnings; the normal linked-worktree command encountered duplicate ESLint plugin discovery.
• Focused Prettier check passed.
• Independent spec-compliance review approved.
• Independent code-quality review approved.

Runtime validation

• Cue voice E2E is not applicable to this shutdown-only boundary. The changed path handles RoomServiceClient.removeParticipant errors after the avatar session closes and emits no framework event that Cue can distinguish.
• The closest behavior-level verification uses a controlled RoomServiceClient boundary. Tests prove code: "not_found" logs at debug without warning, generic errors retain warning behavior, both call removeParticipant with the expected room/identity, both detach the registered agent-session and room listeners, and both allow aclose() to resolve.

Infrastructure gaps

• None. The target has the corresponding avatar cleanup path and LiveKit server SDK error objects expose the needed code field.

---

Ported from livekit/agents#6486

Original PR description

some avatar provider may disconnect to the room before we cleanup

[changeset-bot]

🦋 Changeset detected

Latest commit: a5bf1eb

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

This PR includes changesets to release 37 packages

Name	Type
@livekit/agents	Patch
@livekit/agents-plugin-anam	Patch
@livekit/agents-plugin-anthropic	Patch
@livekit/agents-plugin-assemblyai	Patch
@livekit/agents-plugin-azure	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-did	Patch
@livekit/agents-plugin-elevenlabs	Patch
@livekit/agents-plugin-fishaudio	Patch
@livekit/agents-plugin-google	Patch
@livekit/agents-plugin-hedra	Patch
@livekit/agents-plugin-hume	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-mistralai	Patch
@livekit/agents-plugin-neuphonic	Patch
@livekit/agents-plugin-openai	Patch
@livekit/agents-plugin-perplexity	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-plugin-soniox	Patch
@livekit/agents-plugin-tavus	Patch
@livekit/agents-plugins-test	Patch
@livekit/agents-plugin-trugen	Patch
@livekit/agents-plugin-xai	Patch

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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 1 additional finding.