feat(agent): 增强多模态链路与工具调用能力

backend/src/core/agentscope/schemas/intent.py

@@ -1,5 +1,6 @@
 from __future__ import annotations
 
+from typing import Any
 from typing import Literal
 
 from pydantic import BaseModel, Field, model_validator
@@ -17,6 +18,7 @@ class IntentOutput(BaseModel):
     direct_response: str | None = None
     tasks: list[IntentTask] = Field(default_factory=list)
     complexity: Literal["simple", "complex"]
+    response_metadata: dict[str, Any] = Field(default_factory=dict)
 
     @model_validator(mode="after")
     def validate_route(self) -> "IntentOutput":