收窄改造缺失来源拒绝范围

可补选的必填与可选引用统一按最佳努力恢复
仅对三个无来源替换入口的 action 拒绝改造
细化快速编辑与来源绑定错误提示
补充权威设计说明和回归测试

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

@@ -4942,6 +4942,47 @@ describe('useImageCanvasGenerationWorkflow', () => {
     );
   });
 
+  it('best-effort restores a required reference that the target panel can replace', () => {
+    render(
+      <GenerationWorkflowHarness
+        initialLayers={[
+          createLayer({
+            sourceType: 'generated',
+            assetKind: 'character',
+            generationInputs: {
+              version: 2,
+              action: 'character.generate',
+              fields: [
+                { id: 'prompt', title: '角色设定', value: '红发骑士' },
+                { id: 'model', title: '模型', value: DEFAULT_IMAGE_MODEL },
+                { id: 'style', title: '风格', value: 'none' },
+                { id: 'aspectRatio', title: '比例', value: '1:1' },
+                { id: 'imageSize', title: '尺寸', value: '1K' },
+              ],
+              references: [
+                {
+                  id: 'specReference',
+                  title: '角色规范',
+                  refType: 'project-resource',
+                  refId: 'resource-missing-character-spec',
+                },
+              ],
+            },
+          }),
+        ]}
+      />,
+    );
+
+    fireEvent.click(screen.getByRole('button', { name: '打开图片改造' }));
+
+    expect(screen.getByTestId('dialog').textContent).toContain(
+      'character:idle:open',
+    );
+    expect(screen.getByTestId('reference-pick-warning').textContent).toBe(
+      '部分原参考素材不在当前画布或来自面板上传，未恢复，请重新选择。',
+    );
+  });
+
   it('warns and submits current defaults when V2 parameters are invalid', async () => {
     generateEditorImageMock.mockResolvedValueOnce(
       createGenerated({ prompt: '森林场景' }),
@@ -5055,7 +5096,7 @@ describe('useImageCanvasGenerationWorkflow', () => {
     );
   });
 
-  it('does not legacy-fallback when a V2 required source is unavailable', () => {
+  it('refuses redraw only when quick edit cannot replace its missing source', () => {
     render(
       <GenerationWorkflowHarness
         initialLayers={[
@@ -5085,7 +5126,7 @@ describe('useImageCanvasGenerationWorkflow', () => {
 
     expect(screen.getByTestId('dialog').textContent).toBe('-');
     expect(screen.getByTestId('reference-pick-warning').textContent).toBe(
-      '原必需参考素材不在当前画布或来自面板上传，无法改造。',
+      '原编辑目标不在当前画布，当前快速编辑面板无法重新选择编辑目标，无法改造。',
     );
   });
 

src/components/image-editor/useImageCanvasGenerationWorkflow.ts

@@ -34,8 +34,10 @@ import {
   PERFECT_PIXEL_RECONCILIATION_WINDOW_MS,
 } from './ImageCanvasEditorModel';
 import type {
+  CanvasGenerationAction,
   CanvasGenerationDialogState,
   CanvasHistoryAction,
+  CanvasGenerationInputReference,
   CanvasLayer,
   CanvasTool,
   CanvasViewport,
@@ -167,6 +169,44 @@ function getCanvasGenerationRedrawWarning({
   return null;
 }
 
+const NON_REPLACEABLE_SOURCE_WARNING_BY_ACTION: Partial<
+  Record<CanvasGenerationAction, string>
+> = {
+  'image.edit':
+    '原编辑目标不在当前画布，当前快速编辑面板无法重新选择编辑目标，无法改造。',
+  'character-animation.generate':
+    '原角色图层不在当前画布，当前角色动作面板无法重新选择来源角色，无法改造。',
+  'ui-design.extract-assets':
+    '原 UI 设计图不在当前画布，当前素材提取面板无法重新选择来源设计图，无法改造。',
+};
+
+function getMissingNonReplaceableSourceWarning({
+  action,
+  references,
+  unavailableReferences,
+}: {
+  action: CanvasGenerationAction;
+  references: CanvasGenerationInputReference[];
+  unavailableReferences: CanvasGenerationInputReference[];
+}) {
+  const warning = NON_REPLACEABLE_SOURCE_WARNING_BY_ACTION[action];
+  if (!warning) {
+    return null;
+  }
+  const unavailableSourceKeys = new Set(
+    unavailableReferences
+      .filter((reference) => reference.id === 'source')
+      .map((reference) => `${reference.refType}:${reference.refId}`),
+  );
+  const hasAvailableSource = references
+    .filter((reference) => reference.id === 'source')
+    .some(
+      (reference) =>
+        !unavailableSourceKeys.has(`${reference.refType}:${reference.refId}`),
+    );
+  return hasAvailableSource ? null : warning;
+}
+
 type CropExpandResizeDragState = {
   pointerId: number;
   handle: CropExpandResizeHandle;
@@ -1819,6 +1859,17 @@ export function useImageCanvasGenerationWorkflow({
             layers,
           )
         : [];
+      const missingNonReplaceableSourceWarning = normalizedGenerationInputs
+        ? getMissingNonReplaceableSourceWarning({
+            action: normalizedGenerationInputs.action,
+            references: normalizedGenerationInputs.references,
+            unavailableReferences,
+          })
+        : null;
+      if (missingNonReplaceableSourceWarning) {
+        showGenerationWarning(missingNonReplaceableSourceWarning);
+        return;
+      }
       if (
         isNormalizedGenerationInputs &&
         normalizedGenerationInputs.action === 'ui-design.extract-assets'
@@ -1835,7 +1886,9 @@ export function useImageCanvasGenerationWorkflow({
           : null;
         if (!extractionSource) {
           showGenerationWarning(
-            '原 UI 设计图不在当前画布或来自面板上传，无法改造。',
+            NON_REPLACEABLE_SOURCE_WARNING_BY_ACTION[
+              'ui-design.extract-assets'
+            ]!,
           );
           return;
         }
@@ -1908,11 +1961,7 @@ export function useImageCanvasGenerationWorkflow({
         return;
       }
       if (isNormalizedGenerationInputs) {
-        showGenerationWarning(
-          unavailableReferences.length
-            ? '原必需参考素材不在当前画布或来自面板上传，无法改造。'
-            : '该生成配方当前无法恢复，无法改造。',
-        );
+        showGenerationWarning('该生成配方当前无法恢复，无法改造。');
         return;
       }
       if (sourceLayer.mediaType === 'audio') {