Puzzle: support history images & partial generation

Allow history-generated image paths to be submitted where Data URLs were previously required and avoid treating partial/result-page generations as blocking the whole draft. Backend: resolve history /generated-* references via resolve_puzzle_reference_image_as_data_url and convert to PuzzleDownloadedImage; add PuzzleDownloadedImage::from_resolved_reference_image; extend draft handling to apply generated level metadata (auto-naming) and normalize generation_status to treat levels with images as ready. API: add shouldAutoNameLevel to action contracts and use it to request/refine generated level names. Spacetime/module and mappers: normalize completed level statuses when saving/reading so result-page background or per-level generation doesn't mask completed drafts. Frontend: expose resolver helpers, only mark a work as generating when no usable cover or ready level exists, keep level controls enabled during UI-background regeneration, and add tests covering history-image submission, auto-naming, and UI-background/partial-generation behaviors.

src/components/puzzle-agent/PuzzleAgentWorkspace.interaction.test.tsx

@@ -535,6 +535,60 @@ test('puzzle workspace hides prompt and cost when AI redraw is off', async () =>
   });
 });
 
+test('puzzle workspace submits history image when AI redraw is off', async () => {
+  const onCreateFromForm = vi.fn();
+  vi.mocked(puzzleAssetClient.listHistoryAssets).mockResolvedValue([
+    {
+      assetObjectId: 'asset-history-1',
+      assetKind: 'puzzle_cover_image',
+      imageSrc: '/generated-puzzle-assets/history/image.png',
+      ownerUserId: 'user-1',
+      ownerLabel: '账号 user-1',
+      profileId: null,
+      entityId: 'puzzle-session-1',
+      createdAt: '1713686400.000000Z',
+      updatedAt: '1713686400.000000Z',
+    },
+  ]);
+
+  render(
+    <PuzzleAgentWorkspace
+      session={null}
+      onBack={() => {}}
+      onSubmitMessage={() => {}}
+      onExecuteAction={() => {}}
+      onCreateFromForm={onCreateFromForm}
+    />,
+  );
+
+  fireEvent.click(screen.getByRole('button', { name: '选择历史图片' }));
+  const picker = await screen.findByRole('dialog', {
+    name: '选择历史图片',
+  });
+  fireEvent.click(
+    await within(picker).findByRole('button', { name: /image\.png/u }),
+  );
+  await waitFor(() => {
+    expect(screen.queryByRole('dialog', { name: '选择历史图片' })).toBeNull();
+  });
+
+  const aiRedrawSwitch = screen.getByRole('switch', { name: 'AI重绘' });
+  fireEvent.click(aiRedrawSwitch);
+  expect(screen.queryByLabelText('画面AI重绘要求（提示词）')).toBeNull();
+  expect(screen.queryByText('消耗2泥点')).toBeNull();
+
+  fireEvent.click(screen.getByRole('button', { name: /生成拼图游戏草稿/u }));
+
+  expect(onCreateFromForm).toHaveBeenCalledWith({
+    seedText: '历史素材 · image.png',
+    pictureDescription: '历史素材 · image.png',
+    referenceImageSrc: '/generated-puzzle-assets/history/image.png',
+    referenceImageSrcs: [],
+    imageModel: 'gpt-image-2',
+    aiRedraw: false,
+  });
+});
+
 test('puzzle workspace submits uploaded reference image when AI redraw is on', async () => {
   const onCreateFromForm = vi.fn();
   const uploadedDataUrl = 'data:image/png;base64,uploaded-square';