Best possible solution:

Add a focused changelog entry, keep the runtime changes within the voice-call and Google provider plugins, then land after maintainer review and preferably a live Twilio Google Meet smoke.

Do we have a high-confidence way to reproduce the issue?

No high-confidence live reproduction was established. Source inspection does show current main directly sends Twilio realtime media/clear/mark messages and lacks the Gemini resumption/compression defaults that the PR addresses.

Is this the best way to solve the issue?

Yes, the proposed direction is the narrow maintainable split: Twilio transport pacing stays in the voice-call plugin, and Gemini Live controls stay in the Google provider. It is not merge-ready until the changelog entry is added and maintainer/live validation accepts the behavior.

Full review comments:

• [P3] Add the required changelog entry — docs/plugins/voice-call.md:250-253
  This PR changes user-facing Google Meet/Voice Call realtime behavior and docs, but the branch does not add a CHANGELOG.md entry under the active release section. Repo policy requires one for user-facing fix/perf work before merge.
  Confidence: 0.94

Overall correctness: patch is correct
Overall confidence: 0.82

Acceptance criteria:

• git diff --check

What I checked:

• Current main lacks Twilio pacing: Current main sends realtime provider audio, clear, and mark messages directly over the Twilio WebSocket, with no audio pacer or local speech-start detector in the realtime handler. (extensions/voice-call/src/webhook/realtime-handler.ts:281, 2949171fcc15)
• Current main lacks Gemini resumption/compression defaults: Current main has a 700 ms Gemini Live silence threshold and no sessionResumption/contextWindowCompression provider config fields or defaults in buildGoogleLiveConnectConfig. (extensions/google/realtime-voice-provider.ts:50, 2949171fcc15)
• PR diff remains user-facing without changelog: The fetched PR diff changes Voice Call/Google Meet docs and runtime behavior, but contains no CHANGELOG.md diff. Public docs: docs/plugins/voice-call.md. (docs/plugins/voice-call.md:250, 0e393cea4a27)
• Changelog active section exists: CHANGELOG.md has active Unreleased Changes/Fixes sections, but no entry for this PR's Google Meet/Voice Call realtime behavior. (CHANGELOG.md:5, 2949171fcc15)
• Google dependency contract supports the config direction: @google/genai 1.51.0 types expose LiveConnectConfig.sessionResumption, contextWindowCompression, and LiveServerMessage.sessionResumptionUpdate. (pnpm-lock.yaml:2387, 2949171fcc15)
• Twilio Media Streams contract supports buffering, marks, and clear: Twilio documents outbound media as audio/x-mulaw at 8000 Hz, buffered in order, with mark messages for playback completion and clear messages to empty buffered audio.

Likely related people:

• steipete: Local history shows recent Google Meet realtime/provider behavior commits by Peter Steinberger, including the provider split, audio-buffer clamp, realtime alias handling, and default talk-back mode touched by this PR's Google Meet path. (role: recent maintainer and feature-history owner; confidence: high; commits: 11c600cf1993, c956946b263d, 30b201eff0ff; files: extensions/google-meet/src/voice-call-gateway.ts, docs/plugins/google-meet.md)
• VACInc: The prior ClawSweeper review context identifies recent merged work on Google Live consult responses touching the Google realtime provider and voice-call realtime handler tests near this PR's bridge behavior. (role: adjacent Google Live and voice-call realtime contributor; confidence: medium; commits: 614a2846a257; files: extensions/google/realtime-voice-provider.ts, extensions/google/realtime-voice-provider.test.ts, extensions/voice-call/src/webhook/realtime-handler.ts)
• vincentkoc: The current checkout's available blame/log data attributes the shallow-root versions of the voice-call and Google provider files to Vincent Koc, and recent changelog history shows repeated plugin maintenance contributions; this is useful but weaker routing evidence than the Google Meet-specific commits. (role: adjacent plugin/docs maintainer; confidence: low; commits: 90c0edcb61cd; files: extensions/voice-call/src/webhook/realtime-handler.ts, extensions/google/realtime-voice-provider.ts, docs/plugins/voice-call.md)

Remaining risk / open question:

• No live Twilio Google Meet smoke is attached, so the latency and barge-in improvements are source-supported but not end-to-end proven.
• The missing changelog entry is a repo-policy blocker for this user-facing fix/perf/docs change.

Codex review notes: model gpt-5.5, reasoning high; reviewed against 2949171fcc15.