feat: 添加 Action 协议

app/schemas/actions/base.py

@@ -0,0 +1,14 @@
+"""动作协议公共字段"""
+
+from pydantic import BaseModel, ConfigDict, Field
+
+from app.schemas.base import NonBlankString
+
+
+class ActionModel(BaseModel):
+    # 操作字段显式声明，防止拼写错误被当作扩展字段忽略
+    model_config = ConfigDict(extra="forbid", strict=True, allow_inf_nan=False)
+
+
+class BaseAction(ActionModel):
+    target_id: NonBlankString = Field(description="已有组件的 ID")