feat：优化处理流程

app/schemas/change_scope.py

@@ -1,30 +1,38 @@
-"""修改范围及后续能力需求"""
+"""修改范围及后续能力需求，由需求按规则推导，不调用模型"""
 
 from typing import Literal, Self
 
-from pydantic import Field, model_validator
+from pydantic import Field
 
 from app.schemas.base import ExtensibleModel, NonBlankString
+from app.schemas.operations import is_screen_wide, requires_planning
+from app.schemas.requirement import Requirement
 
 
 class ChangeScope(ExtensibleModel):
     scope: Literal["local", "screen"] = Field(
-        description="local=局部修改或新增；screen=整体设计或修改"
+        description="local=只能改动 target_ids 中的已有组件；screen=整体调整，可涉及任意已有组件"
     )
     target_ids: list[NonBlankString] = Field(
-        default_factory=list, description="涉及的已有组件 ID，新增内容和画布属性可为空"
+        default_factory=list, description="需求明确指定的已有组件 ID，新增内容和画布属性可为空"
     )
-    needs_planning: bool = Field(
-        description="是否需要布局、组件组合或设计规划，与范围大小分别判断"
-    )
-    resource_needs: list[NonBlankString] = Field(
-        default_factory=list,
-        description="需要补充查询的数据、组件、模板或素材及用途，已有信息足够则为空",
-    )
-    reason: NonBlankString = Field(description="简短说明范围、规划和资源判断依据")
+    needs_planning: bool = Field(description="是否需要布局、组件组合或设计规划")
 
-    @model_validator(mode="after")
-    def unique_targets(self) -> Self:
-        if len(self.target_ids) != len(set(self.target_ids)):
-            raise ValueError("target_ids 不能包含重复 ID")
-        return self
+    @classmethod
+    def from_requirement(cls, requirement: Requirement) -> Self:
+        """范围和是否规划都由需求变更决定，规则集中在 operations"""
+        changes = requirement.changes
+        return cls(
+            scope=(
+                "screen"
+                if any(is_screen_wide(c.target_scope, c.operation) for c in changes)
+                else "local"
+            ),
+            # 保持需求中的出现顺序并去重
+            target_ids=list(
+                dict.fromkeys(node_id for c in changes for node_id in c.target_ids)
+            ),
+            # 新建大屏总是先规划；修改大屏时按操作能力判断
+            needs_planning=requirement.intent == "create_screen"
+            or any(requires_planning(c.target_scope, c.operation) for c in changes),
+        )

app/schemas/operations.py

@@ -50,12 +50,20 @@ def is_direct_operation(target_scope: str, operation: str) -> bool:
 
 
 def requires_planning(target_scope: str, operation: str) -> bool:
-    """判断是否必须先规划；未登记的操作不在此列，由能力检查判为不支持"""
-    return not is_direct_operation(target_scope, operation) and (
-        operation in PLAN_ONLY_OPERATIONS
+    """判断是否必须先规划：新增、重排、更换类型，以及没有指定组件的整体调整
+    未登记的操作不在此列，由能力检查判为不支持"""
+    if is_direct_operation(target_scope, operation):
+        return False
+    return operation in PLAN_ONLY_OPERATIONS or (
+        target_scope == "screen" and operation in PLAN_ADJUST_OPERATIONS
     )
 
 
+def is_screen_wide(target_scope: str, operation: str) -> bool:
+    """没有指定组件的整体调整（如整体重排、统一风格），可以涉及大屏上任意已有组件"""
+    return target_scope == "screen" and operation != "add"
+
+
 def is_canvas_operation(target_scope: str, operation: str) -> bool:
     """判断是否为画布属性修改"""
     return target_scope == "canvas" and operation in CANVAS_OPERATIONS