[Pipeline 事件总线]：完成语音助手事件模型，包含stage事件、终端reporter和测试覆盖

tests/test_live_runtime.py

@@ -4,6 +4,21 @@ import unittest
 
 from owner_voice_pet.config import AppConfig
 from owner_voice_pet.conversation import ConversationContext
+from owner_voice_pet.events import (
+    ACK_STARTED,
+    CAPTURE_STARTED,
+    LLM_STARTED,
+    PLAYBACK_FINISHED,
+    SPEECH_ENDED,
+    SPEECH_STARTED,
+    STANDBY_RESUMED,
+    STT_STARTED,
+    TRANSCRIPT_FINAL,
+    TTS_STARTED,
+    WAKE_DETECTED,
+    WAKE_LISTENING,
+    PipelineEventBus,
+)
 from owner_voice_pet.llm import MockLlmProvider
 from owner_voice_pet.models import AudioFrame, AudioSegment, Transcript
 from owner_voice_pet.runtime import LiveVoiceRuntime
@@ -79,6 +94,7 @@ def make_runtime(texts: list[str], context: ConversationContext | None = None) -
     llm = MockLlmProvider(["这是答复。"])
     tts = SineTtsProvider()
     reporter = RecordingReporter()
+    event_bus = PipelineEventBus()
     runtime = LiveVoiceRuntime(
         config=AppConfig(llm_api_key="secret", speech_provider="cloud", post_playback_drain_ms=0),
         transport=transport,
@@ -89,6 +105,7 @@ def make_runtime(texts: list[str], context: ConversationContext | None = None) -
         tts=tts,
         context=context or ConversationContext(),
         reporter=reporter,
+        event_bus=event_bus,
     )
     return runtime, stt, llm, transport, reporter
 
@@ -108,6 +125,23 @@ class LiveRuntimeTests(unittest.TestCase):
         self.assertLess(reporter.statuses.index("应答中：我在"), reporter.statuses.index("请说出问题"))
         self.assertLess(reporter.statuses.index("请说出问题"), reporter.statuses.index("录音中：正在听取问题"))
         self.assertIn("恢复待机：可继续唤醒", reporter.statuses[-1])
+        event_types = [event.type for event in runtime.event_bus.events]
+        expected_order = [
+            WAKE_LISTENING,
+            WAKE_DETECTED,
+            ACK_STARTED,
+            CAPTURE_STARTED,
+            SPEECH_STARTED,
+            SPEECH_ENDED,
+            STT_STARTED,
+            TRANSCRIPT_FINAL,
+            LLM_STARTED,
+            TTS_STARTED,
+            PLAYBACK_FINISHED,
+            STANDBY_RESUMED,
+        ]
+        positions = [event_types.index(item) for item in expected_order]
+        self.assertEqual(positions, sorted(positions))
 
     def test_temporary_context_is_sent_to_second_llm_call(self) -> None:
         runtime, _, llm, _, _ = make_runtime(["第一问", "第二问"])