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.

.hermes/shared-memory/pitfalls.md

@@ -936,6 +936,22 @@
 - 验证：`npm run test -- src/components/puzzle-agent/PuzzleAgentWorkspace.interaction.test.tsx src/components/puzzle-result/PuzzleResultView.test.tsx`，并执行 `npm run check:encoding`。
 - 关联：`src/services/puzzle-works/puzzleHistoryAsset.ts`、`src/components/puzzle-agent/PuzzleHistoryAssetPickerDialog.tsx`、`docs/technical/ASSET_HISTORY_PUZZLE_COVER_KIND_FIX_2026-04-27.md`。
 
+## 拼图历史图关闭 AI 重绘不要强制 Data URL
+
+- 现象：拼图创作页从历史生成图片中选择主图，再关闭 AI 重绘生成草稿时，后端报“上传图必须是图片 Data URL”。
+- 原因：历史图 `imageSrc` 是 `/generated-puzzle-assets/...` 私有兼容路径；AI 重绘开启时后端参考图分支会解析该路径，但关闭 AI 重绘的“直用上传图”分支旧实现只调用 `parse_puzzle_image_data_url`。
+- 处理：关闭 AI 重绘时也复用拼图参考图解析入口，允许 Data URL 与 `/generated-*` 历史路径统一转成 `PuzzleDownloadedImage` 后持久化；前端不需要下载历史图再转 base64。
+- 验证：`npm run test -- src/components/puzzle-agent/PuzzleAgentWorkspace.interaction.test.tsx src/components/puzzle-result/PuzzleResultView.test.tsx`、`cargo test -p api-server puzzle_uploaded_cover_can_reuse_resolved_history_image --manifest-path server-rs\Cargo.toml`、`npm run dev:api-server` 后检查 `/healthz`。
+- 关联：`server-rs/crates/api-server/src/puzzle/draft.rs`、`server-rs/crates/api-server/src/puzzle/vector_engine.rs`、`src/components/puzzle-agent/PuzzleAgentWorkspace.interaction.test.tsx`。
+
+## 拼图结果页局部生图不要污染草稿生成态
+
+- 现象：拼图草稿已经生成完成后，在结果页重新生成 UI 背景或追加关卡生成图片，草稿页仍显示整卡“生成中”，点击草稿会回到生成过程页，无法查看已有结果；UI 背景生成中还会禁用“新增关卡”和关卡图生成。
+- 原因：结果页局部 action 复用了全局 `isPuzzleBusy` / 持久化 `generationStatus=generating` 语义，作品架没有区分“初始草稿不可查看”和“已有结果上的局部关卡生成”。
+- 处理：作品架只在拼图没有可用封面、首关候选图或任一可查看关卡时才把 `generationStatus=generating` 解释为初始草稿生成；结果页 UI 背景和关卡图走 background action，不设置全局 busy，UI 背景只禁用自己的按钮；SpacetimeDB/API mapper 读写时把已有图片但状态仍是 `generating` 的历史关卡归一为 `ready`。
+- 验证：`npm run test -- src/components/custom-world-home/CustomWorldCreationHub.test.tsx src/components/puzzle-result/PuzzleResultView.test.tsx`、`cargo test -p api-server puzzle --manifest-path server-rs\Cargo.toml`。
+- 关联：`src/components/custom-world-home/creationWorkShelf.ts`、`src/components/platform-entry/PlatformEntryFlowShellImpl.tsx`、`src/components/puzzle-result/PuzzleResultView.tsx`、`server-rs/crates/api-server/src/puzzle/mappers.rs`、`server-rs/crates/spacetime-module/src/puzzle.rs`。
+
 ## Jenkins 数据库导入导出脚本先补 Node 工具链 PATH
 
 - 现象：`Genarrative-Database-Import` 或 `Genarrative-Database-Export` 运行到迁移脚本时，`bash` 报 `node: command not found`，常见在日志里表现为某个 `sh` 块内第 61 行直接调用 `node` 失败。