[模拟麦克风验收]：完成自动化语音闭环自测，包含模拟音频输入、两轮Pipeline验证和fixture回放

openspec/changes/separate-wake-and-realtime-transcript/design.md

@@ -207,6 +207,36 @@ models/
 16. Local speech provider test validates `OWNER_SPEECH_PROVIDER=local` does not construct cloud ASR/TTS providers.
 17. Partial filter test validates single-character and short transient results are not emitted.
 18. CTC STT loading test validates manifest type selects `from_zipformer2_ctc` and does not require transducer encoder/decoder/joiner files.
+19. Simulated microphone live acceptance validates the current `VoiceAssistantPipeline` with generated wake frames, formal question frames, noisy short partials, background speech, two repeated turns, session context, TTS playback, and standby recovery.
+20. Fixture replay test validates the generated simulated microphone JSONL can be written and replayed for deterministic debugging.
+
+## Simulated Microphone Acceptance
+
+`owner_voice_pet simulate-live` is a deterministic no-device acceptance runner. It does not replace `run-live` with a real microphone, but it closes the gap between small unit tests and human testing by feeding realistic ordered audio frames into the same live pipeline controller.
+
+```text
+simulate-live
+  -> generated AudioFrame sequence
+  -> BoundedMemoryAudioTransport(simulated microphone)
+  -> VoiceAssistantPipeline
+  -> KeywordWakeWordProvider(metadata wake)
+  -> SimulatedNoiseFilter(metadata + PCM passthrough)
+  -> PrimarySpeakerVadRecorder
+  -> MetadataSttProvider(partial + final)
+  -> MockLlmProvider
+  -> SineTtsProvider
+  -> JSON checks
+```
+
+The generated sequence intentionally contains:
+
+1. one wake frame per turn;
+2. six primary speaker frames per question, enough to establish the temporary profile;
+3. short noisy partials `家` and `家确`, followed by stable question partials;
+4. fifteen background speech frames after the primary speaker stops, enough to trigger the 300 ms primary-speaker absence endpoint;
+5. a second wake/question sequence to prove recovery to standby and temporary context continuity.
+
+The transport is bounded: if frames are exhausted unexpectedly, it raises a structured validation error instead of letting the pipeline loop forever. `--write-fixture` writes the exact simulated microphone frames as JSONL, and `--fixture` replays them for repeatable debugging.
 
 ## Migration