修复图集快速编辑后端校验与错误提示

后端允许完整图标图集进入图片快速编辑，仅继续禁止单个图标。

快速编辑失败时向红色错误框传递具体错误文案。

补充前后端回归测试并同步画布编辑器技术文档。

server-rs/crates/api-server/src/editor_project.rs

@@ -2099,14 +2099,14 @@ fn ensure_editor_image_edit_asset_kind_allowed(asset_kind: Option<&str>) -> Resu
     let Some(asset_kind) = asset_kind.map(str::trim).filter(|value| !value.is_empty()) else {
         return Ok(());
     };
-    if !matches!(asset_kind, "icon" | "icon-spritesheet") {
+    if asset_kind != "icon" {
         return Ok(());
     }
 
     Err(
         AppError::from_status(StatusCode::BAD_REQUEST).with_details(json!({
             "provider": "editor-image-edit",
-            "message": "图标与图标图集不支持快速编辑",
+            "message": "单个图标不支持快速编辑",
             "assetKind": asset_kind,
         })),
     )
@@ -9186,21 +9186,20 @@ mod tests {
     }
 
     #[test]
-    fn editor_image_edit_rejects_icons_but_allows_icon_specs() {
-        for asset_kind in ["icon", "icon-spritesheet"] {
-            let error = ensure_editor_image_edit_asset_kind_allowed(Some(asset_kind))
-                .expect_err("icon assets should not support quick edit");
-            assert_eq!(error.status_code(), StatusCode::BAD_REQUEST);
-            assert_eq!(
-                error.details().and_then(|details| details.get("message")),
-                Some(&json!("图标与图标图集不支持快速编辑")),
-            );
-            assert_eq!(
-                error.details().and_then(|details| details.get("assetKind")),
-                Some(&json!(asset_kind)),
-            );
-        }
+    fn editor_image_edit_rejects_individual_icons_but_allows_spritesheets_and_specs() {
+        let error = ensure_editor_image_edit_asset_kind_allowed(Some("icon"))
+            .expect_err("individual icon assets should not support quick edit");
+        assert_eq!(error.status_code(), StatusCode::BAD_REQUEST);
+        assert_eq!(
+            error.details().and_then(|details| details.get("message")),
+            Some(&json!("单个图标不支持快速编辑")),
+        );
+        assert_eq!(
+            error.details().and_then(|details| details.get("assetKind")),
+            Some(&json!("icon")),
+        );
 
+        assert!(ensure_editor_image_edit_asset_kind_allowed(Some("icon-spritesheet")).is_ok());
         assert!(ensure_editor_image_edit_asset_kind_allowed(Some("icon-spec")).is_ok());
         assert!(ensure_editor_image_edit_asset_kind_allowed(Some("image")).is_ok());
         assert!(ensure_editor_image_edit_asset_kind_allowed(None).is_ok());

src/components/image-editor/ImageCanvasQuickEditPanelView.test.tsx

@@ -124,6 +124,27 @@ describe('ImageCanvasQuickEditPanelView', () => {
     expect(rememberImageModel).toHaveBeenCalledWith('gpt-image-2');
   });
 
+  it('renders the failure message inside the quick edit alert', () => {
+    render(
+      <QuickEditPanelHarness
+        initialPanel={{
+          sourceLayerId: 'layer-a',
+          prompt: '调整图集布局',
+          size: '1024x1024',
+          aspectRatio: '1:1',
+          imageSize: '1K',
+          model: 'gpt-image-2',
+          status: 'failed',
+          errorMessage: '图集快速编辑失败',
+        }}
+      />,
+    );
+
+    expect(screen.getByRole('alert').textContent).toContain(
+      '图集快速编辑失败',
+    );
+  });
+
   it('submits without rendering a standalone close button', () => {
     const submitQuickEdit = vi.fn();
     render(

src/components/image-editor/ImageCanvasQuickEditPanelView.tsx

@@ -53,6 +53,7 @@ function createQuickEditDialog(
     mode: isQuickEdit ? 'quick-edit' : 'generate',
     prompt: panel.prompt,
     status: panel.status,
+    errorMessage: panel.errorMessage,
     sourceLayerId: panel.sourceLayerId,
     generationReferences: panel.quickEditReferences,
     assetLabel: panel.assetLabel,