rozx · Oct 10, 2026 · Oct 9, 2026 · Oct 9, 2026 · Oct 9, 2026 · Oct 10, 2026
diff --git a/README.en-US.md b/README.en-US.md
@@ -17,17 +17,19 @@
 - [Open the web app](https://tsukuyomi.rozx.moe/)
 - [Download the desktop app](https://github.com/rozx/Tsukuyomi/releases/latest)
 
-## 🌐 New in v0.17: Three-Language UI and Per-Book Target Language
+## ☁️ New in v0.18: Chapter-Level Incremental Sync and Lighter Local Embeddings
 
-The interface, help docs, and README are available in Simplified Chinese, Traditional Chinese, and English. Each book now has its own translation target language, and source text is no longer limited to Japanese.
+Sync now uploads and downloads chapters in small groups, so large libraries sync smoothly. Local embeddings switch to a smaller model that runs in a dedicated Worker and no longer freezes the UI.
 
-- **Interface language**: switch it under Settings → General → Interface language. On first launch it matches your system language, and the preference syncs with your settings.
-- **Per-book target language**: choose Simplified Chinese, Traditional Chinese, or English in the book's Translation settings. New books start with the interface language at creation time. Translations, volume and chapter titles, and term / character names are stored per language and never overwrite each other.
-- **Any source language**: the AI detects the source language paragraph by paragraph; paragraphs already in the target language can be kept as-is.
-- **Firecrawl fetch fallback**: when a site blocks proxy access, fetching falls back to Firecrawl (works without a key), replacing the old automatic proxy switching. Book update checks now read only the catalog and compare chapter text on demand.
-- **Sync protocol v6**: book metadata and chapter content sync separately. Chapters use stable groups based on their IDs, so adding or editing one chapter normally uploads only its group, changed metadata, and the manifest. Entity deletion protection and local-only memory access times are preserved. Manifest-based reads support libraries with more than 300 sync files. **For multiple devices, back up first, upgrade every device to a version supporting v6, then sync them one at a time. The first upgrade performs a full migration.**
+- **Sync protocol v6**: book metadata and chapter content are stored separately, and chapters are split into 16 fixed groups by chapter ID. Adding or editing one chapter normally uploads only its group, the changed metadata, and the manifest instead of the whole book.
+- **Large-library sync**: when GitHub truncates the file list at 300 files, the client fills in the missing files from the full sync manifest and keeps going. When nothing in the library changed, the full library scan is skipped.
+- **Leftover file cleanup and revision history**: under Settings → Sync, scan for and remove old remote files the manifest no longer references. Revision history groups file changes by book.
+- **More reliable settings sync**: Tavily / Firecrawl API keys and each task's default model merge by their own modification time, so other settings edits no longer override them and they are no longer cleared mid-sync.
+- **Bekko local embeddings**: the default model is now `bekko-embedding-v1-a25m` (384 dimensions, about 190 MiB shared by WebGPU and WASM), and inference runs in a Web Worker. The **Vector index** panel is redesigned and now reachable on tablets and narrow layouts too.
 
-[v0.17.0 release notes (Simplified Chinese)](public/releaseNotes/RELEASE_NOTES_v0.17.0.md) · [Settings guide](public/help/en-US/settings-guide.md)
+**For multiple devices, back up first, upgrade every device to v0.18.0, then sync them one at a time. The first sync migrates the whole Gist to v6. If you use local embeddings, the model must be downloaded again and vectors rebuilt.**
+
+[v0.18.0 release notes (Simplified Chinese)](public/releaseNotes/RELEASE_NOTES_v0.18.0.md) · [Settings guide](public/help/en-US/settings-guide.md) · [Local embeddings](public/help/en-US/local-embedding.md)
 
 ![Tsukuyomi Dashboard](public/screenshots/desktop-index.png)
 
@@ -101,8 +103,9 @@ Tsukuyomi answers questions with the current book as context and can act through
 
 ### ☁️ Cross-Device Sync
 
-- **Gist cloud sync**: optionally sync your data to your own GitHub Gist, with revision history and restore from usable snapshots.
+- **Gist cloud sync**: optionally sync your data to your own GitHub Gist, with revision history grouped by book, restore from usable snapshots, and cleanup of leftover remote files the manifest no longer references.
 - **Incremental manifest sync**: `manifest.json` with SHA-256 hashes picks out changed entries, and conditional requests cut down downloads. ETags are re-checked before upload; concurrent changes trigger a re-merge and retry.
+- **Chapter-group sync**: book metadata and chapter content are stored separately, and chapters are split into 16 fixed groups by ID, so editing one chapter uploads only its group. When the file list exceeds 300 files, missing files are filled in from the sync manifest, so large libraries sync completely.
 - **Consistent deletes**: the manifest carries deletions as tombstones, so an entry deleted on device A is not pushed back by device B.
 - **In-book deletion records**: terms, characters, and aliases have stable identities, and their deletion records stay with the book; deleted translation versions are recorded too, so devices returning from offline cannot resurrect them.
 - **Paragraph merging**: with a synced structural baseline, source edits and deletions made on one side are kept; translations are merged only for paragraphs whose source matches, and you are asked to review conflicts when both sides changed the structure.
@@ -185,7 +188,7 @@ Use the [web app](https://tsukuyomi.rozx.moe/) or [download the desktop app](htt
 4. In **Volume/chapter draft**, check the book details, chapter order, and text.
 5. Generate an **Import plan**, check the target book, missing chapters, and translation impact, then choose **Confirm import**. When it finishes, choose **Open novel**.
 
-See the [AI import workspace guide](public/help/en-US/import-guide.md) for more examples. You can also choose **Import from website** in the library to use the built-in rules for the Japanese novel sites `ncode.syosetu.com`, `novel18.syosetu.com`, `kakuyomu.jp`, and `syosetu.org`; other sites can be handed to the AI importer. App-format JSON book files can be added with **Import from JSON**, and full backups are restored from Settings.
+See the [AI import workspace guide](public/help/en-US/import-guide.md) for more examples. You can also choose **Import from website** in the library to use the built-in rules for the Japanese novel sites `ncode.syosetu.com`, `novel18.syosetu.com`, `kakuyomu.jp`, and `syosetu.org`; other sites can be handed to the AI importer. When a site blocks proxy access, fetching falls back to Firecrawl (works without a key), and book update checks read only the catalog, comparing chapter text on demand. App-format JSON book files can be added with **Import from JSON**, and full backups are restored from Settings.
 
 ### 3. Run from source
 
@@ -218,7 +221,7 @@ bun run dev
 | **Context**       | [Terminology](public/help/en-US/book-details-terminology.md) \| [Character settings](public/help/en-US/book-details-characters.md) \| [Memory](public/help/en-US/book-details-memory.md)            |
 | **AI import**     | [Import workspace: steps, splitting, and adding chapters](public/help/en-US/import-guide.md)                                                                                                        |
 | **Advanced**      | [Chat assistant](public/help/en-US/chat-assistant-guide.md) \| [Local embeddings and chapter search](public/help/en-US/local-embedding.md)                                                          |
-| **Release notes** | [v0.17.0 release notes (Simplified Chinese)](public/releaseNotes/RELEASE_NOTES_v0.17.0.md)                                                                                                          |
+| **Release notes** | [v0.18.0 release notes (Simplified Chinese)](public/releaseNotes/RELEASE_NOTES_v0.18.0.md)                                                                                                          |
 
 > The in-app **Help** page has the user guides; docs on the main branch are synced to the [GitHub Wiki](https://github.com/rozx/Tsukuyomi/wiki) by a workflow.
 

diff --git a/README.md b/README.md
@@ -17,17 +17,19 @@
 - [打开网页版](https://tsukuyomi.rozx.moe/)
 - [下载桌面版](https://github.com/rozx/Tsukuyomi/releases/latest)
 
-## 🌐 v0.17 新增：三语言界面与按书目标语言
+## ☁️ v0.18 新增：按章节增量同步与更轻的本地嵌入
 
-界面、帮助文档与 README 提供简体中文、繁體中文和 English。每本书可以单独选择译文目标语言，原文不再限定日语。
+同步改为按章节小组上传与下载，大书库也能顺畅同步；本地嵌入换用更小的模型，并在独立 Worker 中运行，不再卡住界面。
 
-- **界面语言**：在「设置 → 通用设置 → 界面语言」切换，首次使用时匹配系统语言，偏好随设置同步。
-- **按书目标语言**：在书籍「翻译设置」选择简体中文、繁體中文或 English；新书默认取创建时的界面语言，各语言的译文、卷章标题和术语 / 角色译名分别保存，互不覆盖。
-- **原文不限语言**：AI 按段落判断原文语言，已经是目标语言的段落可原样保留。
-- **Firecrawl 抓取回退**：网站拦截代理访问时自动改用 Firecrawl（无需 Key 也可使用），取代原来的「自动切换代理服务」；书籍更新检查改为只读目录，按需逐章比对正文。
-- **同步协议 v6**：书籍目录与章节正文分开同步，正文按章节 ID 分成固定小组。新增或修改一章通常只上传所在小组、变化的目录和清单；不再重传整本书的所有分块。保留实体删除保护和记忆访问时间本地化。清单读取支持超过 300 个同步文件的多书库。**多设备同步请先备份，将所有设备升级到支持 v6 的版本，再逐台同步；首次升级会执行一次完整迁移。**
+- **同步协议 v6**：书籍目录与章节正文分开存放，正文按章节 ID 固定分成 16 个小组。新增或修改一章通常只上传所在小组、变化的目录和清单，不再重传整本书。
+- **大书库同步**：GitHub 文件列表超过 300 个文件被截断时，按完整同步清单补齐文件继续同步；书库没有变化时跳过全库扫描。
+- **遗留文件清理与修订历史**：在「设置 → 同步设置」扫描并清理远端不再引用的旧文件；修订历史按书籍归组显示文件变化。
+- **设置同步更可靠**：Tavily / Firecrawl API Key 与各任务的默认模型分别按修改时间合并，不再被其他设置覆盖或在同步途中被清空。
+- **Bekko 本地嵌入**：默认模型换成 `bekko-embedding-v1-a25m`（384 维，WebGPU / WASM 共用约 190 MiB），推理移入 Web Worker；「向量索引」面板重做，平板与窄屏也有入口。
 
-[阅读 v0.17.0 发布说明](public/releaseNotes/RELEASE_NOTES_v0.17.0.md) · [设置说明](public/help/zh-CN/settings-guide.md)
+**多设备同步请先备份，再把所有设备升级到 v0.18.0，最后逐台同步；首次同步会把 Gist 完整迁移到 v6。启用本地嵌入的用户需要重新下载模型并重建向量。**
+
+[阅读 v0.18.0 发布说明](public/releaseNotes/RELEASE_NOTES_v0.18.0.md) · [设置说明](public/help/zh-CN/settings-guide.md) · [本地嵌入](public/help/zh-CN/local-embedding.md)
 
 ![Tsukuyomi Dashboard](public/screenshots/desktop-index.png)
 
@@ -101,8 +103,9 @@ Tsukuyomi 采用 Bring Your Own Key 模式，内置两种提供商：
 
 ### ☁️ 跨设备同步
 
-- **Gist 云同步**: 可选择将数据同步到自己的 GitHub Gist，支持查看修订历史和恢复可用快照。
+- **Gist 云同步**: 可选择将数据同步到自己的 GitHub Gist，支持查看按书籍归组的修订历史、恢复可用快照，并清理远端不再引用的遗留文件。
 - **Manifest 增量同步**: 基于 `manifest.json` 与 SHA-256 哈希选择变化条目，使用条件请求减少下载；上传前复核 ETag，检测并发变化后重新合并重试。
+- **按章节小组同步**: 书籍目录与章节正文分开存放，正文按章节 ID 固定分成 16 组，修改一章只需上传所在小组；文件列表超过 300 个时按同步清单补齐，大书库也能完整同步。
 - **跨端删除一致**: Manifest 使用墓碑（tombstones）传递删除语义，A 设备删除的条目不会被 B 设备重新推回。
 - **书内实体删除记录**: 术语、角色、别名拥有稳定身份，删除记录随书长期保留；删除的译文版本同样留有记录，离线设备回流时不会复活。
 - **段落合并**: 有同步结构基准时，保留单端的原文修订与删除；只有原文一致的段落才合并译文，两端都改过结构时提示检查冲突。
@@ -185,7 +188,7 @@ Tsukuyomi 采用 Bring Your Own Key 模式，内置两种提供商：
 4. 在「卷章草稿」检查书籍资料、章节顺序和正文。
 5. 生成「导入方案」，核对目标书籍、缺失章节和译文影响，再点击「确认导入」。完成后点「打开小说」。
 
-更多例子见 [AI 导入工作台指南](public/help/zh-CN/import-guide.md)。也可以在书库中选择「从网站导入」，使用内置的日文小说网站规则处理 `ncode.syosetu.com`、`novel18.syosetu.com`、`kakuyomu.jp`、`syosetu.org`；其他站点可转交 AI 导入器。应用格式的 JSON 书籍文件可通过「从 JSON 导入」添加，完整资料备份在设置中恢复。
+更多例子见 [AI 导入工作台指南](public/help/zh-CN/import-guide.md)。也可以在书库中选择「从网站导入」，使用内置的日文小说网站规则处理 `ncode.syosetu.com`、`novel18.syosetu.com`、`kakuyomu.jp`、`syosetu.org`；其他站点可转交 AI 导入器。网站拦截代理访问时会自动改用 Firecrawl 抓取（无需 Key 也可使用）；书籍更新检查只读取目录，可按需逐章比对正文。应用格式的 JSON 书籍文件可通过「从 JSON 导入」添加，完整资料备份在设置中恢复。
 
 ### 3. 从源码运行
 
@@ -218,7 +221,7 @@ bun run dev
 | **核心逻辑** | [术语管理](public/help/zh-CN/book-details-terminology.md) \| [角色设定](public/help/zh-CN/book-details-characters.md) \| [记忆系统](public/help/zh-CN/book-details-memory.md)  |
 | **AI 导入**  | [导入工作台：分步操作、拆章与补章](public/help/zh-CN/import-guide.md)                                                                                                          |
 | **进阶工具** | [聊天助手实战](public/help/zh-CN/chat-assistant-guide.md) \| [本地嵌入与章节检索](public/help/zh-CN/local-embedding.md)                                                        |
-| **更新日志** | [v0.17.0 发布说明](public/releaseNotes/RELEASE_NOTES_v0.17.0.md)                                                                                                               |
+| **更新日志** | [v0.18.0 发布说明](public/releaseNotes/RELEASE_NOTES_v0.18.0.md)                                                                                                               |
 
 > 应用内「帮助」可查阅使用指南；主分支文档通过工作流同步到 [GitHub Wiki](https://github.com/rozx/Tsukuyomi/wiki)。