feat: 优化部分代码及提示词

app/schemas/actions/add.py

@@ -0,0 +1,25 @@
+"""新增组件动作"""
+
+from typing import Literal
+
+from pydantic import Field
+
+from app.schemas.actions.base import ActionModel
+from app.schemas.base import NonBlankString
+from app.schemas.screen import ScreenNode
+
+
+class AddAction(ActionModel):
+    type: Literal["add"] = "add"
+    node: ScreenNode = Field(
+        description="待新增的完整组件，包含新 ID、类型、布局和配置"
+    )
+    plan_id: NonBlankString | None = Field(
+        default=None, description="对应的规划组件编号，独立模拟时可省略"
+    )
+    component_key: NonBlankString | None = Field(
+        default=None, description="使用的物料目录编号，规划生成时必填"
+    )
+    sample_data: bool = Field(
+        default=False, description="物料含示例数据，不代表已获取真实业务数据"
+    )