[实时转写]：完成录音期间转写显示，包含partial事件、本地streaming STT和终端实时反馈

src/owner_voice_pet/config.py

@@ -16,6 +16,7 @@ class AppConfig:
     llm_model: str = "mimo-v2.5"
     llm_api_style: str = "chat_completions"
     llm_stream: bool = True
+    realtime_transcript_enabled: bool = True
     audio_input_device: str | None = None
     audio_output_device: str | None = None
     asset_dir: Path = Path("assets/pet")
@@ -65,6 +66,8 @@ class AppConfig:
             llm_model=get("LLM_MODEL", "mimo-v2.5") or "mimo-v2.5",
             llm_api_style=get("LLM_API_STYLE", "chat_completions") or "chat_completions",
             llm_stream=(get("LLM_STREAM", "1") or "1").lower() not in {"0", "false", "no"},
+            realtime_transcript_enabled=(get("REALTIME_TRANSCRIPT_ENABLED", "1") or "1").lower()
+            not in {"0", "false", "no"},
             audio_input_device=get("AUDIO_INPUT_DEVICE"),
             audio_output_device=get("AUDIO_OUTPUT_DEVICE"),
             asset_dir=Path(get("ASSET_DIR", "assets/pet") or "assets/pet"),