修复画布生图交付与素材成本展示

修复 nanobanana 标量尺寸被误判为宽高的问题。

普通生图和快速编辑在内存完成尺寸变换后仅上传一次，变换失败保留 provider 原图。

移除快速编辑重复的原始输出素材，保留角色、图集和 UI 的独立中间产物。

后台将不重复计费的中间产物显示为不单独计费。

补充单次上传、降级交付和成本展示回归测试及相关文档。

apps/admin-web/src/pages/AdminEditorAssetQueryPage.test.tsx

@@ -245,6 +245,40 @@ test('后台素材查询不展示分类筛选和分类列', async () => {
   expect(screen.queryByRole('columnheader', { name: '分类' })).toBeNull();
 });
 
+test('后台素材查询将中间产物标记为不单独计费', async () => {
+  vi.mocked(listAdminEditorAssets).mockResolvedValueOnce({
+    entries: [
+      {
+        ...generatedAsset,
+        assetId: 'asset-source',
+        label: '角色形象原图',
+        assetKind: 'editor_green_screen_source',
+        generationCostMudPoints: 0,
+      },
+      generatedAsset,
+    ],
+    nextCursor: null,
+  });
+
+  render(
+    <AdminEditorAssetQueryPage token="admin-token" onUnauthorized={vi.fn()} />,
+  );
+
+  const sourceRow = (await screen.findByText('角色形象原图')).closest('tr');
+  const finalRow = screen.getByText('角色形象 1').closest('tr');
+  expect(sourceRow).not.toBeNull();
+  expect(finalRow).not.toBeNull();
+  expect(within(sourceRow!).getByText('不单独计费')).toBeTruthy();
+  expect(within(finalRow!).getByText('12 泥点')).toBeTruthy();
+
+  fireEvent.click(within(sourceRow!).getByRole('button', { name: '详情' }));
+  expect(
+    within(await screen.findByRole('dialog', { name: '素材详情' })).getByText(
+      '不单独计费',
+    ),
+  ).toBeTruthy();
+});
+
 test('后台素材查询缩略图使用 objectKey 换签后展示', async () => {
   render(
     <AdminEditorAssetQueryPage token="admin-token" onUnauthorized={vi.fn()} />,

apps/admin-web/src/pages/AdminEditorAssetQueryPage.tsx

@@ -24,6 +24,10 @@ const ADMIN_ASSET_READ_EXPIRE_SECONDS = 300;
 const ADMIN_ASSET_READ_DISPATCH_SPACING_MS = 40;
 const ADMIN_ASSET_READ_RETRY_DELAYS_MS = [400, 1_200, 3_000] as const;
 const ADMIN_ASSET_THUMBNAIL_ROOT_MARGIN = '240px 0px';
+const NON_BILLED_INTERMEDIATE_ASSET_KINDS = new Set([
+  'editor_green_screen_source',
+  'editor_image_edit_source',
+]);
 const AUDIO_ASSET_COVER_SRC = `${import.meta.env.DEV ? import.meta.env.BASE_URL : '/'}creation-home/audio-asset-cover.png`;
 let adminAssetReadDispatchTail = Promise.resolve();
 
@@ -217,7 +221,7 @@ export function AdminEditorAssetQueryPage({
                         {promptText}
                       </button>
                     </td>
-                    <td>{entry.generationCostMudPoints} 泥点</td>
+                    <td>{generationCostLabel(entry)}</td>
                     <td>
                       <button
                         className="admin-secondary-button"
@@ -516,7 +520,7 @@ function AdminAssetDetailDialog({
               {entry.width} x {entry.height}
             </AdminInfoItem>
             <AdminInfoItem label="成本">
-              {entry.generationCostMudPoints} 泥点
+              {generationCostLabel(entry)}
             </AdminInfoItem>
             <AdminInfoItem label="模型">{entry.model || '-'}</AdminInfoItem>
             <AdminInfoItem label="Provider">
@@ -558,6 +562,13 @@ function AdminAssetDetailDialog({
   );
 }
 
+function generationCostLabel(entry: AdminEditorAssetPayload) {
+  return entry.assetKind &&
+    NON_BILLED_INTERMEDIATE_ASSET_KINDS.has(entry.assetKind)
+    ? '不单独计费'
+    : `${entry.generationCostMudPoints} 泥点`;
+}
+
 function AdminAssetPreviewDialog({
   entry,
   token,