fix(google): broaden Gemini 3 Flash detection

[rosetta-livekit-bot]

Summary

• Port fix(google): broaden _is_gemini_3_flash_model to cover all Gemini 3 Flash variants agents#6210 to the JS Google plugin.
• Treat any gemini-3* model containing flash as Gemini 3 Flash when defaulting thinking level.
• Add a patch changeset for @livekit/agents-plugin-google.

Testing

• pnpm exec prettier --check plugins/google/src/llm.ts
• pnpm exec eslint plugins/google/src/llm.ts
• pnpm exec tsc -p plugins/google/tsconfig.json --noEmit (blocked by existing workspace resolution/type errors unrelated to this change, including missing @livekit/agents workspace declarations)

---

Ported from livekit/agents#6210

Original PR description

Summary

• _is_gemini_3_flash_model previously checked for the substring "gemini-3-flash", which missed gemini-3.5-flash (dot notation)
• New logic: m.startswith("gemini-3") and "flash" in m — covers both gemini-3-flash-preview and gemini-3.5-flash, while correctly excluding gemini-3-pro-preview
• Also removes the redundant startswith branch that was a subset of the in check

Test plan

• Confirm gemini-3.5-flash returns True
• Confirm gemini-3-flash-preview returns True
• Confirm gemini-3-pro-preview returns False
• Confirm gemini-2.5-flash returns False

🤖 Generated with Claude Code

[changeset-bot]

🦋 Changeset detected

Latest commit: 6fb3f9f

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

This PR includes changesets to release 35 packages

Name	Type
@livekit/agents-plugin-google	Patch
@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-did	Patch
@livekit/agents-plugin-elevenlabs	Patch
@livekit/agents-plugin-fishaudio	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

Not sure what this means? Click here to learn what changesets are.

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