Add gated turn start strategy

engine/config.py

@@ -61,6 +61,33 @@ class TurnConfig:
 
     vad: VADConfig = field(default_factory=VADConfig)
     user_speech_timeout_sec: float = 1.0
+    interruption_min_chars: int = 3
+    interruption_use_interim: bool = True
+    interruption_short_replies: list[str] = field(
+        default_factory=lambda: [
+            "是",
+            "是的",
+            "对",
+            "对的",
+            "嗯",
+            "好",
+            "好的",
+            "行",
+            "可以",
+            "没问题",
+            "不是",
+            "不",
+            "不行",
+            "不用",
+            "不要",
+            "没有",
+            "否",
+            "no",
+            "yes",
+            "ok",
+            "okay",
+        ]
+    )
 
 
 @dataclass(frozen=True)
@@ -165,6 +192,18 @@ def config_from_dict(data: dict) -> EngineConfig:
             user_speech_timeout_sec=float(
                 turn.get("user_speech_timeout_sec", TurnConfig().user_speech_timeout_sec)
             ),
+            interruption_min_chars=int(
+                turn.get("interruption_min_chars", TurnConfig().interruption_min_chars)
+            ),
+            interruption_use_interim=bool(
+                turn.get("interruption_use_interim", TurnConfig().interruption_use_interim)
+            ),
+            interruption_short_replies=list(
+                turn.get(
+                    "interruption_short_replies",
+                    TurnConfig().interruption_short_replies,
+                )
+            ),
         ),
         agent=AgentConfig(**agent),
         services=ServicesConfig(