Cleanup engine

engine/app/config.py

@@ -25,6 +25,10 @@ class Settings(BaseSettings):
     sample_rate: int = Field(default=16000, description="Audio sample rate in Hz")
     chunk_size_ms: int = Field(default=20, description="Audio chunk duration in milliseconds")
     default_codec: str = Field(default="pcm", description="Default audio codec")
+    max_audio_buffer_seconds: int = Field(
+        default=30,
+        description="Maximum buffered user audio duration kept in memory for current turn"
+    )
 
     # VAD Configuration
     vad_type: str = Field(default="silero", description="VAD algorithm type")
@@ -79,6 +83,10 @@ class Settings(BaseSettings):
         default=200, 
         description="Minimum speech duration (ms) required to trigger barge-in. Lower=more sensitive."
     )
+    barge_in_silence_tolerance_ms: int = Field(
+        default=60,
+        description="How much silence (ms) is tolerated during potential barge-in before reset"
+    )
 
     # Logging
     log_level: str = Field(default="INFO", description="Logging level")