Add turn configuration support for assistants

- Introduce a new `turnConfig` field in `AssistantConfig` and `Assistant` models to manage user interaction settings.
- Implement `TurnConfig`, `BargeInConfig`, `VadConfig`, and `TurnDetectionConfig` schemas to define turn management strategies.
- Update the backend to handle turn configuration in the database and during assistant operations.
- Enhance frontend components with a `TurnConfigEditor` for configuring turn settings, including VAD and barge-in strategies.
- Modify existing pages to integrate turn configuration, improving user experience and interaction capabilities.

backend/schemas.py

@@ -16,6 +16,7 @@ from pydantic.alias_generators import to_camel
 RuntimeMode = Literal["pipeline", "realtime"]
 ModelType = Literal["LLM", "ASR", "TTS", "Realtime", "Embedding", "Agent"]
 AssistantType = Literal["prompt", "workflow", "dify", "fastgpt", "opencode"]
+TurnEndStrategy = Literal["silence", "smart_turn"]
 ToolType = Literal["end_call", "http"]
 ToolStatus = Literal["active", "archived", "draft"]
 ToolParameterType = Literal["string", "number", "integer", "boolean", "object", "array"]
@@ -40,6 +41,27 @@ class CamelModel(BaseModel):
     )
 
 
+class BargeInConfig(CamelModel):
+    strategy: Literal["vad", "transcription"] = "vad"
+
+
+class VadConfig(CamelModel):
+    confidence: float = Field(default=0.7, ge=0.0, le=1.0)
+    start_secs: float = Field(default=0.2, ge=0.05, le=2.0)
+    stop_secs: float = Field(default=0.2, ge=0.05, le=3.0)
+    min_volume: float = Field(default=0.6, ge=0.0, le=1.0)
+
+class TurnDetectionConfig(CamelModel):
+    strategy: TurnEndStrategy = "silence"
+    silence_timeout_secs: float = Field(default=0.6, ge=0.2, le=5.0)
+
+
+class TurnConfig(CamelModel):
+    barge_in: BargeInConfig = Field(default_factory=BargeInConfig)
+    vad: VadConfig = Field(default_factory=VadConfig)
+    turn_detection: TurnDetectionConfig = Field(default_factory=TurnDetectionConfig)
+
+
 # 各 type 允许的瘦字段(其余字段写入时清零,防止跨类型脏数据)
 ALLOWED_FIELDS: dict[str, set[str]] = {
     "prompt": {"prompt"},
@@ -57,6 +79,7 @@ class AssistantUpsert(CamelModel):
     runtime_mode: RuntimeMode = "pipeline"
     greeting: str = ""
     enable_interrupt: bool = True
+    turn_config: TurnConfig = Field(default_factory=TurnConfig)
     vision_enabled: bool = False
     vision_model_resource_id: str | None = None