feat：新增物料

app/resources/material_fields.py

@@ -28,7 +28,7 @@ def resolve_field_groups(
 
 
 def field_default(component: ComponentDefinition, field: MaterialField) -> JsonValue:
-    """物料默认配置中有该路径时取默认配置的值，否则取字段声明的 default"""
+    """物料默认配置中有该路径时取默认配置的值，否则取字段声明的 default；跟随主题的颜色为 None"""
     value = lookup(component.template(), field.segments)
     return field.default if value is MISSING else value
 
@@ -54,6 +54,8 @@ def panel_setters(groups: list[FieldGroup]) -> list[dict]:
             }
             if field.span is not None:
                 setter["span"] = field.span
+            if field.themed:
+                setter["themed"] = True
             setters.append(setter)
     return setters
 
@@ -126,11 +128,14 @@ def describe_field(
     """给模型看的字段说明：省略空值和属性面板专用的信息"""
     data = field.model_dump(
         mode="json",
-        exclude={"default", "panel", "span", "editable"},
+        exclude={"default", "panel", "span", "editable", "themed"},
         exclude_none=True,
         exclude_defaults=True,
     )
     data["default"] = field_default(component, field)
+    if field.themed:
+        # 默认为 null：没单独设置时画面上按画布主题取色
+        data["follows_theme"] = True
     if not field.editable:
         data["editable"] = False
     data["group"] = group.key