diff --git a/docs/02-architecture-and-code-map.md b/docs/02-architecture-and-code-map.md
index 04e3f57..c717154 100644
--- a/docs/02-architecture-and-code-map.md
+++ b/docs/02-architecture-and-code-map.md
@@ -2,8 +2,8 @@
 generated: true (请先修改 Gitea Wiki，禁止直接编辑本文件)
 wiki_page: Architecture-and-Code-Map
 wiki_url: https://git.ilapage.cn/OPC/lexgo/wiki/Architecture-and-Code-Map.-
-wiki_revision: 2ccdc108a21abe67ad77c05af59bb34bac304093
-synchronized_at: 2026-09-15T14:49:27Z
+wiki_revision: 0bca600ea0dfcb18141920f448954bb9e2fa067c
+synchronized_at: 2026-09-15T15:10:08Z
 <!-- gitea-wiki-mirror:end -->
 
 # 架构与代码地图
@@ -478,3 +478,22 @@ schema v8 新增两张表，都只用可重放的 `CREATE TABLE IF NOT EXISTS`
 复用不变：`sniffAttachment`（magic bytes 判定）、`validateAttachment`（音频 ≤20 MiB；图片 ≤2 MiB 且 ≤4096×4096）、`coverDimensions`（JPEG/PNG 用标准库、WebP 读容器头）、`binaryResponse` + `http.ServeContent`（Range/206、416、ETag/304）、上传「先校验后写入、失败保留旧文件」的流程，以及 `chapterAttachmentViews`/`chapterPlaybackSeconds` 的批量读取（一次查询喂整个章节列表）。
 
 学习端：`stores/library.ts` 用 `uploadChapterFile`/`deleteChapterFile`/`saveChapterPlayback`/`reportChapterPlayback` 替换了书级音频动作，并新增 `illustrationUrls`（按章节）与 `audioChapterId`（记录当前加载的音频属于哪一章，切章不会复用上一章的文件）；`views/BookView.vue` 的封面区块收窄为封面，**章节列表每行只有一个「编辑」按钮**，章节编辑对话框（`data-testid="chapter-dialog"`）同时编辑**章节标题、作者、正文、插图与音频**：标题与作者用「标签在左、输入框在右」的同一行排版（`.field-row`），正文编辑框加高（18 行），插图与音频压缩成各一两行（标签＋状态＋上传/替换/移除＋「JPG/PNG/WebP · ≤2 MiB · ≤4096×4096」「MP3 · ≤20 MiB · 替换或移除会重置位置」），底部一行写明时机（`data-testid="attachment-timing"`），`views/ReaderView.vue` 在正文上方渲染本章插图的**缩略图**（高 120px 的按钮，`data-testid="chapter-illustration"`），点击后在对话框（`data-testid="illustration-dialog"`）里按原图显示（最大 `min(88vw,1200px)` × `78vh`，保持比例不裁切），播放器只在**本章**有音频时出现，离开或切换章节时上报一次位置；**书籍页的章节列表不显示也不预取插图**（2026-09-15 按用户要求修订两次：先改为缩略图＋弹窗，再把附件并入章节编辑对话框）。
+
+## #37 章节级音频与章节插图（2026-09-15）
+
+**schema v11**：`lexgo_books` 增加可选的 `author VARCHAR(120) NOT NULL DEFAULT ''`，与 v10 的章节作者共用同一个条件加列助手 `addAuthorColumn`（先查 `information_schema`，缺列才 `ALTER TABLE`，在语句列表之后执行），新建库的 v3 建表语句也带该列。`BookUpdateInput` 增加可选的 `author`（省略则保留原值、空串即清空、≤120 字符、去首尾空白），`BookSummary`/`BookRef` 都返回它；书籍编辑接口因此从「重命名」变成「编辑书籍」（书名＋作者）。
+
+**schema v10**：`lexgo_chapters` 增加可选的 `author VARCHAR(120) NOT NULL DEFAULT ''`。MySQL 没有 `ADD COLUMN IF NOT EXISTS`，因此这一列由 Go 侧的条件步骤 `addChapterAuthorColumn` 添加（先查 `information_schema`，缺列才执行 `ALTER TABLE`），并在语句列表执行**之后**运行，保证「部分迁移可重试」「回退标记后可重新升级」这两条既有性质仍然成立；新建库的 v3 语句里也直接带上该列。章节编辑接口接受 `author`（可选、去首尾空白、≤120 字符、空串即清空），`ChapterSummary` 与 `ChapterSource` 都返回它，阅读页在标题下显示非空的作者。
+
+**schema v9**：新增 `lexgo_chapter_attachments`（主键 `(chapter_id, kind)`，`kind ∈ {audio, illustration}`，`bytes MEDIUMBLOB`，外键级联到章节与账号）与 `lexgo_chapter_playback_positions`（主键 `(owner_id, chapter_id)`），并执行一条幂等语句 `DELETE FROM lexgo_book_attachments WHERE kind='audio'`。三张表都只用可重放的 DDL；`lexgo_book_attachments` 与 `lexgo_playback_positions` 保留结构（不删表、不改列），书级音频停止写入。
+
+| 层 | 变化 |
+|---|---|
+| 书级 | 只剩**封面**：`kind='cover'`、`GET/POST/DELETE /api/v1/books/:id/cover`、`coverVersion` 缓存失效机制全部保持原样 |
+| 章节级 | `POST/DELETE/GET /api/v1/chapters/:id/audio` 与 `.../illustration`、`PUT /api/v1/chapters/:id/playback` |
+| 退役 | `POST/DELETE/GET /api/v1/books/:id/audio`、`PUT /api/v1/books/:id/playback`（路由不再注册，返回 404） |
+| 响应 | `ChapterSummary` 增加 `illustrationVersion`、`audioVersion`、`playbackSeconds`，字段始终存在（无文件时为空串），书籍详情的章节列表与阅读器响应都带上它们；书的 `attachments` 只剩 `cover` |
+
+复用不变：`sniffAttachment`（magic bytes 判定）、`validateAttachment`（音频 ≤20 MiB；图片 ≤2 MiB 且 ≤4096×4096）、`coverDimensions`（JPEG/PNG 用标准库、WebP 读容器头）、`binaryResponse` + `http.ServeContent`（Range/206、416、ETag/304）、上传「先校验后写入、失败保留旧文件」的流程，以及 `chapterAttachmentViews`/`chapterPlaybackSeconds` 的批量读取（一次查询喂整个章节列表）。
+
+学习端：`stores/library.ts` 用 `uploadChapterFile`/`deleteChapterFile`/`saveChapterPlayback`/`reportChapterPlayback` 替换了书级音频动作，并新增 `illustrationUrls`（按章节）与 `audioChapterId`（记录当前加载的音频属于哪一章，切章不会复用上一章的文件）；`views/BookView.vue` 的书籍页把封面压成**一行紧凑控件**（`.cover-row`：预览 120px ＋「上传/替换封面」「移除」，不含标题、字段名与规格提示文字），把高度让给章节列表；标题行用 `.title-line` 把**书级作者**显示在书名右侧（`data-testid="book-author"`，未设置则不显示）；「编辑书名」改为**「编辑书籍」**，对话框内用同一套 `.field-row` 同行排版编辑**书名与作者**。**章节列表每行只有一个「编辑」按钮**，章节编辑对话框（`data-testid="chapter-dialog"`）同时编辑**章节标题、作者、正文、插图与音频**：标题与作者用「标签在左、输入框在右」的同一行排版（`.field-row`），正文编辑框加高（18 行），插图与音频压缩成各一两行（标签＋状态＋上传/替换/移除＋「JPG/PNG/WebP · ≤2 MiB · ≤4096×4096」「MP3 · ≤20 MiB · 替换或移除会重置位置」），底部一行写明时机（`data-testid="attachment-timing"`），`views/ReaderView.vue` 在正文上方渲染本章插图的**缩略图**（高 120px 的按钮，`data-testid="chapter-illustration"`），点击后在对话框（`data-testid="illustration-dialog"`）里按原图显示（最大 `min(88vw,1200px)` × `78vh`，保持比例不裁切），播放器只在**本章**有音频时出现，离开或切换章节时上报一次位置；**书籍页的章节列表不显示也不预取插图**（2026-09-15 按用户要求修订两次：先改为缩略图＋弹窗，再把附件并入章节编辑对话框）。
diff --git a/docs/03-business-rules-and-glossary.md b/docs/03-business-rules-and-glossary.md
index b2f6dde..538e798 100644
--- a/docs/03-business-rules-and-glossary.md
+++ b/docs/03-business-rules-and-glossary.md
@@ -2,8 +2,8 @@
 generated: true (请先修改 Gitea Wiki，禁止直接编辑本文件)
 wiki_page: Business-Rules-and-Glossary
 wiki_url: https://git.ilapage.cn/OPC/lexgo/wiki/Business-Rules-and-Glossary.-
-wiki_revision: 77e1f1291a201744bdbb556ed1ef7d81cef2f969
-synchronized_at: 2026-09-15T14:49:28Z
+wiki_revision: b688ef278f83c8055e16f91843a239f9ea2dd492
+synchronized_at: 2026-09-15T15:10:08Z
 <!-- gitea-wiki-mirror:end -->
 
 # 业务规则与术语
@@ -394,3 +394,25 @@ exact优先；未命中再按WordNet异常表/词尾规则查候选，词性顺
 **删除与备份**：删除章节（#10 的事务级联）连带删除该章附件与该章所有账号的位置记录；删除书籍通过章节级联清空。附件存于数据库，因此 #15 的备份与恢复自动覆盖，恢复后按字节相同并可继续拖动。
 
 **范围外**：多张插图、正文中间图文混排、缩略图墙式独立浏览界面、多音轨与分章音轨、字幕与时间戳同步、逐句跟读、转写、TTS、转码、自动搜图、在线音频地址、公开分享与跨用户共享。
+
+## #37 章级附件规则（2026-09-15）
+
+**挂载单位**：封面属于**书**（一本书一张，维持 #21 已验收的规则）；音频与插图属于**章**（一章各一张）。多篇文章合并成一本书时，每章可以有自己的音频与插图，互不影响。没有附件的章节保持原样：不显示占位框、不显示播放器。
+
+**格式与上限**：音频只接受 **MP3**（ID3 或帧同步），≤ **20 MiB**；插图与封面同规格：**JPG/PNG/WebP**，≤ **2 MiB**，像素 ≤ **4096×4096**；一律**按文件内容判定类型**，不看扩展名与客户端声明。超限 `413`、类型或内容非法 `400` 并给出可读原因；**被拒绝的上传保留旧文件**。
+
+**替换与位置**：替换即覆盖同一章同一类型的那一行。**替换或移除音频会清空该章的播放位置**（旧位置对新文件没有意义）；插图与音频互不影响，移除其一不会动另一个。
+
+**播放位置**：粒度是**账号＋章节**，不是账号＋书——同一本书的不同章节各记各的。播放中每 5 秒、暂停时、离开当前章节或切换章节时各上报一次；服务端只做 0～24 小时的上界校验与 upsert，并发以最后一次写入为准，不解析音频时长。
+
+**读取与缓存**：插图与音频都需要会话，跨账号一律 `404`、匿名 `401`；支持 **HTTP Range（206）**、`416` 与 `ETag`/`304`。前端用带凭据的 fetch 取字节再交给 `<img>`/`<audio>`，令牌不出现在 URL 中。
+
+**书籍作者与章节作者**：两者是**互相独立**的可选自由文本（各 ≤120 字符，各自去首尾空白，留空即清空）：书级作者在书籍页显示于书名右侧、在「编辑书籍」里维护；章节作者在阅读页显示于章节标题下、在章节「编辑」里维护。**章节不会从书级继承作者**，字段也不参与归类、检索或权限判断（如需继承或检索，需要单独确认）。省略作者字段的编辑请求保留原值。
+
+**章节作者**：作者是**可选自由文本**（≤120 字符），随章节标题与正文一起保存，去首尾空白，留空即清空；它只用于展示（阅读页在章节标题下显示），不参与归类、检索或权限判断，也不要求与书级数据一致。
+
+**界面**：书籍页的章节列表每行只保留一个「编辑」按钮，点开后一个对话框同时编辑标题、正文、本章插图与本章音频（**一个入口、一处编辑**）；**章节列表不显示章节图片**（也不预取）。对话框内两种生效时机写得很清楚：**标题、作者与正文点「保存章节」后生效；插图与音频在选中文件后立即上传**，取消不会撤销已上传的文件；改正文会重新处理章节（只改标题不会），而已上传的插图与音频挂在章节上、不随正文版本变化。阅读页里插图以**缩略图**形式显示在本章正文开头（章节标题与播放器条之下），**点击缩略图在弹窗中查看原图**（保持比例、不裁切；Esc 关闭后正文位置不变）；缩略图是按钮而不是正文的一部分，不参与划词；播放器条仍为 sticky，判据为「本章有音频」。
+
+**删除与备份**：删除章节（#10 的事务级联）连带删除该章附件与该章所有账号的位置记录；删除书籍通过章节级联清空。附件存于数据库，因此 #15 的备份与恢复自动覆盖，恢复后按字节相同并可继续拖动。
+
+**范围外**：多张插图、正文中间图文混排、缩略图墙式独立浏览界面、多音轨与分章音轨、字幕与时间戳同步、逐句跟读、转写、TTS、转码、自动搜图、在线音频地址、公开分享与跨用户共享。
diff --git a/docs/04-local-development-and-verification.md b/docs/04-local-development-and-verification.md
index 14897e3..aba0404 100644
--- a/docs/04-local-development-and-verification.md
+++ b/docs/04-local-development-and-verification.md
@@ -2,8 +2,8 @@
 generated: true (请先修改 Gitea Wiki，禁止直接编辑本文件)
 wiki_page: Local-Development-and-Verification
 wiki_url: https://git.ilapage.cn/OPC/lexgo/wiki/Local-Development-and-Verification.-
-wiki_revision: 92144cd570153b560180e195c49524fdb95a1048
-synchronized_at: 2026-09-15T14:49:28Z
+wiki_revision: 8985f93f7319b2e6a428fc4417f353a7b909d797
+synchronized_at: 2026-09-15T15:10:08Z
 <!-- gitea-wiki-mirror:end -->
 
 # 本地开发与验证
@@ -990,3 +990,69 @@ schema v8 → v9：新增 `lexgo_chapter_attachments` 与 `lexgo_chapter_playbac
 - Safari/Firefox 未测；渐进式流式播放仍未做（服务端 Range 已实现）。
 - 迁移会清空书级音频测试数据且回退到 v8 找不回；当前无真实用户，工单已记录。
 - 已有书籍/章节的存量内容不受影响，但**没有做「把既有书级音频迁到章级」的转换**（无真实数据）。
+
+## #37 章级附件验证（2026-09-15）
+
+### 迁移
+
+schema v8 → v9：新增 `lexgo_chapter_attachments` 与 `lexgo_chapter_playback_positions`，并执行一条幂等清理语句删除 `lexgo_book_attachments` 中 `kind='audio'` 的历史行（测试期数据，不做存量迁移）。开发库迁移前后逐表业务计数一致，schema 记到 9，两张新表为空、书级音频行为 0（快照 `.local/issue13-before37.json`、`.local/issue13-after37.json`）。回退：把 `lexgo_schema.version` 写回 8 并恢复 `.local/lexgo-pre-issue37.exe`，但**被清空的书级音频测试数据找不回**。
+
+| 命令 | 结果 |
+|---|---|
+| `go vet ./...` / `gofmt -l` | 通过、无输出 |
+| `LEXGO_TEST_DB_NAME=lexgo_test_issue13 python scripts/server.py test-integration` | **87 项顶层用例通过、0 跳过**（本单新增/改写：章级附件与位置的完整集成用例、封面仍为书级、上传请求形态校验、v8→v9 迁移与回退重升级、v7→v8 测试改为用原始 SQL 写已退役的表） |
+| `cd learner`：`vitest` / `vue-tsc` / `build` / `playwright test` | 157 项单测、类型检查、构建、**26 项 E2E**（桌面 22 ＋ 移动 4）全部通过 |
+| 治理 / 镜像 | 65 项、`check --strict`、`sync --check` 通过 |
+| 真实 API＋MySQL | **52 项检查通过**（见下） |
+| #15 恢复演练（第三次） | **22 项检查通过**（见下） |
+
+### 真实链路（52 项）
+
+用一本**两章**的虚构书验证「附件属于章而不是书」：只给第一章上传真实的 PNG 插图与三秒 MP3 音频 → 数据库里两张行与章节对应、`byte_size` 与 `OCTET_LENGTH(bytes)` 一致、音频 sha256 与上传文件一致、书级音频行为 0 → 章节列表与阅读器都带 `illustrationVersion`/`audioVersion`，第二章为空串且位置为 0 → 插图按字节返回并带 `ETag`（`If-None-Match` 得 `304`）→ 音频按字节返回、`Accept-Ranges` 存在、`Range: bytes=200-399` 得 `206` 且切片正确、不可满足的 Range 得 `416` → **书级音频与播放接口已下线（404）** → 位置写入后章节列表回读一致、第二章仍为 0、负值 400、无音频的章 404 → 替换音频后位置归零且仍一行 → SVG 伪装插图、文本伪装音频 400、21 MiB 音频 413 且原文件保留 → 越权读取/替换/上报 404、匿名 401 → 移除音频清掉位置但插图不受影响 → 删除章节与删除书籍级联清空。证据 `.local/issue37-api-evidence.json`。
+
+### 恢复演练（第三次，22 项）
+
+带章级附件的 fixture → Go 二进制 `lexgo backup`（manifest 已含两张新表）→ 恢复到空库 `lexgo_test_restore_chapter` → `lexgo verify --manifest` 通过且包含「章节附件都指向存在的章节」「章节播放位置都指向存在的章节」→ **17 张表逐表内容校验和与源库一致** → 用恢复库起实例：同一账号可登录、章节仍报告两个文件、位置仍是恢复前的值、**音频与插图按字节相同地返回**、Range 仍得 206、越权仍 404 → 演练库与 fixture 删除，开发库仍是 schema 9。证据 `.local/issue37-restore-evidence.json`。
+
+### 插图交互修订（2026-09-15，按用户要求）
+
+书籍页章节列表去掉插图列与列表预取；阅读页改为缩略图（高 120px 的按钮）并在点击后于弹窗中显示原图。后端与 schema 无变化。验证：学习端 157 单测与 26 项 E2E 通过（断言章节列表无 `<img>` 且不请求 `/illustration`、缩略图是按钮、点击后弹窗内为对象 URL 的图片）；真实链路在 issue5_a 自己的一本书上完成——列表 `<img>` 为 0、缩略图 ≤130px、弹窗内图片大于缩略图且 `naturalWidth > 0`、Esc 关闭后正文仍可见，随后移除 fixture 插图复原开发数据（截图 `issue37-real-book-no-image.png`、`issue37-real-reader-thumbnail.png`、`issue37-real-illustration-dialog.png`）。示例地址 `/books/5` 属于其他账号，请求返回 404，实际使用该账号自己的书。
+
+### 插图交互修订（2026-09-15，按用户要求）
+
+书籍页章节列表去掉插图列与列表预取；阅读页改为缩略图（高 120px 的按钮）并在点击后于弹窗中显示原图。后端与 schema 无变化。验证：学习端 157 单测与 26 项 E2E 通过（断言章节列表无 `<img>` 且不请求 `/illustration`、缩略图是按钮、点击后弹窗内为对象 URL 的图片）；真实链路在 issue5_a 自己的一本书上完成——列表 `<img>` 为 0、缩略图 ≤130px、弹窗内图片大于缩略图且 `naturalWidth > 0`、Esc 关闭后正文仍可见，随后移除 fixture 插图复原开发数据（截图 `issue37-real-book-no-image.png`、`issue37-real-reader-thumbnail.png`、`issue37-real-illustration-dialog.png`）。示例地址 `/books/5` 属于其他账号，请求返回 404，实际使用该账号自己的书。
+
+### 附件并入章节编辑对话框（2026-09-15，按用户要求）
+
+章节列表每行只留一个「编辑」；原「章节附件」对话框被移除，插图与音频的上传/替换/移除移入章节编辑对话框（与标题、正文同处），对话框内明确写出「标题与正文点保存后生效；插图与音频选中后立即上传，取消不会撤销」。后端与 schema 仍无变化。验证：学习端 157 单测与 26 项 E2E 全通过（新断言：章节行只有一个按钮；编辑对话框同时含标题、正文、插图与音频控件与生效时机说明；上传后仍可用「保存章节」提交标题与正文）；真实链路确认章节行按钮数为 1、对话框中四类控件齐备、在编辑框内上传后状态立即变为「已设置」而标题仍等待保存、取消后进入阅读页仍为缩略图＋弹窗，最后移除 fixture 插图（截图 `issue37-real-chapter-editor.png`）。
+
+### 对话框浮层缺陷修复（2026-09-15，用户发现）
+
+用户报告「编辑区显示在章节列表下面」。查明原因：`learner/src/main.ts` **从未导入 `element-plus/es/components/dialog/style/css` 与 `message-box/style/css`**，因此自 #10 起所有 `ElDialog` 与 `ElMessageBox` 都退化成文档流中的普通块（探针实测：移除导入时对话框 `position: static`、`top` 正好等于章节列表底部；恢复导入后 `.el-overlay` 为 `fixed`、对话框居中且遮罩为 `rgba(0,0,0,0.5)`）。修复：在 `main.ts` 补上两行样式导入。
+
+**验证盲区**：此前所有 UI 验证只断言「元素可见 / DOM 结构」，`toBeVisible()` 对普通块同样成立，所以单元测试与 E2E 全绿也没暴露它。现已补长期回归：`learner/e2e/overlay.ts` 提供 `expectModalOverlay` 与 `expectMessageBoxOverlay`，断言对话框位于 `.el-overlay`（`position: fixed`）、位置在视口内且横向不溢出；`attachments.spec.ts`（章节编辑对话框、插图弹窗）与 `edit.spec.ts`（书名对话框、删除确认）都调用它。真实链路再次确认：章节编辑对话框与删除确认均为固定浮层（截图 `issue37-real-dialog-modal.png`、`issue37-real-confirm-modal.png`）。
+
+### 作者字段与编辑对话框紧凑化（2026-09-15，按用户要求）
+
+按用户要求：①「章节标题」标签与输入框同行，下面新增「作者」标签与输入框；②精简插图/音频的提示文字，把高度让给正文编辑框。
+
+- **schema v10**：`lexgo_chapters` 增加 `author VARCHAR(120) NOT NULL DEFAULT ''`。由 Go 条件步骤 `addChapterAuthorColumn`（先查 `information_schema` 再 `ALTER TABLE`）在语句列表之后执行，保持「部分迁移可重试 / 回退标记后可重新升级」；新建库的 v3 语句也带该列。开发库迁移后 schema = 10，既有 34 个章节的 author 均为空串（无数据变化）。
+- **接口**：章节编辑接受 `author`（可选、trim、≤120 字符、空串清空），`ChapterSummary`/`ChapterSource` 都返回它；仅改作者不会重新处理章节（状态保持不变）。
+- **界面**：`.field-row` 把标签与输入框放同一行（标题、作者各一行）；正文 textarea 提升到 18 行；插图与音频压成各一两行提示（规格写在下方一行）；阅读页在标题下显示非空作者（`data-testid="chapter-author-line"`）。
+- **验证**：Go 89 项顶层用例（新增 `TestMySQLChapterAuthorRoundTrip` 与 `TestMigrationFromV9AddsChapterAuthor`，后者覆盖「旧库缺列 → 迁移补列 → 回退标记 → 重新升级」）；学习端 157 单测与 26 项 E2E 通过；真实链路实测：标题标签与输入框中线偏差 <8px、作者行位于标题下方且标签同行、正文高度 415px（原约 250px）、保存作者后阅读页显示、清空后该行消失（截图 `issue37-real-editor-layout.png`、`issue37-real-reader-author.png`）。
+
+### 书级作者与书籍页精简（2026-09-15，按用户要求）
+
+按用户要求：①书籍页去掉「封面」「书籍封面」「JPG…4096×4096」「音频与插图按章节设置…」四段文字，把空间让给章节列表；②「编辑书名」改为**「编辑书籍」**并可编辑**书名与作者**；③书名右侧显示当前书籍作者。
+
+- **schema v11**：`lexgo_books.author VARCHAR(120) NOT NULL DEFAULT ''`，复用 v10 的条件加列助手（改名 `addAuthorColumn`，表名取自本文件常量）。开发库迁移后 schema = 11，既有 25 本书的 author 均为空串；回退件 `.local/lexgo-pre-issue37c.exe`（回退写回版本号 10 即可）。
+- **接口**：`PATCH /api/v1/books/:id` 接受可选 `author`（省略保留、空串清空、trim、≤120），`BookSummary`/`BookRef` 返回它；书籍编辑不再只改书名。
+- **界面**：封面区块变成一行（预览 ＋ 上传/替换 ＋ 移除）；`.title-line` 在书名右侧显示作者（未设置不显示）；「编辑书籍」对话框用同行标签编辑书名与作者。
+- **验证**：Go **91 项顶层用例**（新增 `TestMySQLBookAuthorRoundTrip` 与 `TestMigrationFromV10AddsBookAuthor`）；学习端 157 单测与 26 项 E2E 通过；真实链路实测封面行高 **68px**、章节列表紧随其后（间距 18px）、四段被删文字都不再出现、「编辑书籍」对话框含作者输入、保存后作者显示在书名右侧（同一行、位于书名之后）并在刷新后保留、清空后标签消失（截图 `issue37-real-book-page.png`）。
+
+### 未验证
+
+- 真机与真实浏览器解码播放（媒体元素在测试中被桩替换）、真机听感与兼容性仍未验证（#21 起的既有缺口）。
+- Safari/Firefox 未测；渐进式流式播放仍未做（服务端 Range 已实现）。
+- 迁移会清空书级音频测试数据且回退到 v8 找不回；当前无真实用户，工单已记录。
+- 已有书籍/章节的存量内容不受影响，但**没有做「把既有书级音频迁到章级」的转换**（无真实数据）。
diff --git a/docs/09-product-requirements-overview.md b/docs/09-product-requirements-overview.md
index 280b073..a66a78d 100644
--- a/docs/09-product-requirements-overview.md
+++ b/docs/09-product-requirements-overview.md
@@ -2,8 +2,8 @@
 generated: true (请先修改 Gitea Wiki，禁止直接编辑本文件)
 wiki_page: Product-Requirements-Overview
 wiki_url: https://git.ilapage.cn/OPC/lexgo/wiki/Product-Requirements-Overview.-
-wiki_revision: 1fc22dc050d51e4d4013d2a58b914f7b972116ca
-synchronized_at: 2026-09-15T14:49:29Z
+wiki_revision: 21ca050a33bdbe8133c921b6b302fbfc8d8cf7fe
+synchronized_at: 2026-09-15T15:10:10Z
 <!-- gitea-wiki-mirror:end -->
 
 # 产品需求总览
@@ -323,3 +323,9 @@ F 范围之外的 MVP 增补项「书籍音频与封面附件」已实现，待
 用户的真实场景「多篇文章合并成一本书、每章各有音频，并为每章加插图」已实现，待用户验收：音频与插图改为**章节级**（一章各一张），封面维持**书级**；阅读页在正文上方显示本章插图缩略图、点击后在弹窗里查看原图（章节列表不显示章节图片），播放器只在本章有音频时出现；书籍页章节列表每行只有一个「编辑」入口，标题、作者、正文、插图与音频在同一对话框内编辑（标题/作者/正文点保存后生效，文件选中后立即上传）；章节作者为可选自由文本（≤120 字符），阅读页在标题下显示；schema 为 v10；播放位置粒度改为**账号＋章节**，切换章节时上报一次。类型按文件内容判定（MP3、JPG/PNG/WebP），音频 ≤20 MiB、图片 ≤2 MiB 且 ≤4096×4096，读取需会话并支持 HTTP Range 与 ETag。schema 升到 v9（两张新表 + 幂等清空书级音频历史行，需显式迁移）；**书级音频接口已下线**。附件仍存于数据库，因此 #15 的备份恢复自动覆盖，第三次恢复演练验证了附件按字节恢复且 Range 可用。
 
 **已知代价**：#21 交付的书级音频功能整体作废（其测试期数据在迁移中清空且回退无法找回）；前端实现与播放器组件被复用，未推倒重做。下次再调整附件挂载粒度前应先确认真实使用场景。**真机听感与浏览器真实解码播放仍未验证**。其余待办：#24 书库列表优化与缺陷 #32。
+
+## #37 交付状态更新（2026-09-15）
+
+用户的真实场景「多篇文章合并成一本书、每章各有音频，并为每章加插图」已实现，待用户验收：音频与插图改为**章节级**（一章各一张），封面维持**书级**；阅读页在正文上方显示本章插图缩略图、点击后在弹窗里查看原图（章节列表不显示章节图片），播放器只在本章有音频时出现；书籍页章节列表每行只有一个「编辑」入口，标题、作者、正文、插图与音频在同一对话框内编辑（标题/作者/正文点保存后生效，文件选中后立即上传）；**书籍作者**与**章节作者**是两份互相独立的可选自由文本（各 ≤120 字符，留空即清空），书级作者显示在书籍页书名右侧并由「编辑书籍」维护，章节作者显示在阅读页标题下；schema 为 v11；播放位置粒度改为**账号＋章节**，切换章节时上报一次。类型按文件内容判定（MP3、JPG/PNG/WebP），音频 ≤20 MiB、图片 ≤2 MiB 且 ≤4096×4096，读取需会话并支持 HTTP Range 与 ETag。schema 升到 v9（两张新表 + 幂等清空书级音频历史行，需显式迁移）；**书级音频接口已下线**。附件仍存于数据库，因此 #15 的备份恢复自动覆盖，第三次恢复演练验证了附件按字节恢复且 Range 可用。
+
+**已知代价**：#21 交付的书级音频功能整体作废（其测试期数据在迁移中清空且回退无法找回）；前端实现与播放器组件被复用，未推倒重做。下次再调整附件挂载粒度前应先确认真实使用场景。**真机听感与浏览器真实解码播放仍未验证**。其余待办：#24 书库列表优化与缺陷 #32。
diff --git a/docs/README.md b/docs/README.md
index d056023..4e0fc4d 100644
--- a/docs/README.md
+++ b/docs/README.md
@@ -2,8 +2,8 @@
 generated: true (请先修改 Gitea Wiki，禁止直接编辑本文件)
 wiki_page: Home
 wiki_url: https://git.ilapage.cn/OPC/lexgo/wiki/Home
-wiki_revision: dd5bc8b5423219fcc90d772bafeb56845644d16b
-synchronized_at: 2026-09-15T14:49:27Z
+wiki_revision: da0f9a0feb70b7099edcf8adf50a18a15435dd33
+synchronized_at: 2026-09-15T15:10:07Z
 <!-- gitea-wiki-mirror:end -->
 
 # LexGo 文档入口
@@ -98,3 +98,5 @@ Quant-UX 原型 v1 已通过用户验收。[桌面预览](https://qux.ilapage.cn
 #37 章节级音频与章节插图已于 2026-09-15 实施完成，待用户验收：每章可以上传一段 MP3（≤20 MiB）与一张插图（JPG/PNG/WebP，≤2 MiB、≤4096×4096），封面仍按书；阅读页在正文上方显示本章插图的缩略图、点击后在弹窗里查看原图（书籍页章节列表不显示章节图片），播放器只在本章有音频时出现且不与文本同步，播放位置按「账号＋章节」保存并在切换章节时上报；书籍页章节列表每行只有一个「编辑」，点开后在同一对话框里编辑标题、正文与本章插图、音频（标题与正文点保存后生效，文件选中后立即上传）。类型按文件内容判定，读取需会话并支持 HTTP Range 与 ETag；附件存于数据库，包含在 #15 的备份恢复范围内（第三次恢复演练已验证按字节恢复）。schema v9 需显式迁移，书级音频接口已下线，其实测试期数据在迁移中清空。真机听感与浏览器真实解码播放仍需人工确认。
 
 #37 章节级音频与章节插图已于 2026-09-15 实施完成，待用户验收：每章可以上传一段 MP3（≤20 MiB）与一张插图（JPG/PNG/WebP，≤2 MiB、≤4096×4096），封面仍按书；阅读页在正文上方显示本章插图的缩略图、点击后在弹窗里查看原图（书籍页章节列表不显示章节图片），播放器只在本章有音频时出现且不与文本同步，播放位置按「账号＋章节」保存并在切换章节时上报；书籍页章节列表每行只有一个「编辑」，点开后在同一对话框里编辑标题、作者、正文与本章插图、音频（标题/作者/正文点保存后生效，文件选中后立即上传；阅读页在标题下显示作者）。类型按文件内容判定，读取需会话并支持 HTTP Range 与 ETag；附件存于数据库，包含在 #15 的备份恢复范围内（第三次恢复演练已验证按字节恢复）。schema v9 需显式迁移，书级音频接口已下线，其实测试期数据在迁移中清空。真机听感与浏览器真实解码播放仍需人工确认。
+
+#37 章节级音频与章节插图已于 2026-09-15 实施完成，待用户验收：每章可以上传一段 MP3（≤20 MiB）与一张插图（JPG/PNG/WebP，≤2 MiB、≤4096×4096），封面仍按书；阅读页在正文上方显示本章插图的缩略图、点击后在弹窗里查看原图（书籍页章节列表不显示章节图片），播放器只在本章有音频时出现且不与文本同步，播放位置按「账号＋章节」保存并在切换章节时上报；书籍页的封面压成一行紧凑控件（预览＋上传/替换/移除），书名右侧显示书级作者，「编辑书籍」可改书名与作者，章节列表每行只有一个「编辑」，点开后在同一对话框里编辑标题、作者、正文与本章插图、音频（标题/作者/正文点保存后生效，文件选中后立即上传；阅读页在标题下显示作者）。类型按文件内容判定，读取需会话并支持 HTTP Range 与 ETag；附件存于数据库，包含在 #15 的备份恢复范围内（第三次恢复演练已验证按字节恢复）。schema v9 需显式迁移，书级音频接口已下线，其实测试期数据在迁移中清空。真机听感与浏览器真实解码播放仍需人工确认。
diff --git a/learner/e2e/attachments.spec.ts b/learner/e2e/attachments.spec.ts
index 5f4fe29..b07ad25 100644
--- a/learner/e2e/attachments.spec.ts
+++ b/learner/e2e/attachments.spec.ts
@@ -105,7 +105,9 @@ test('the library shows the cover and the chapter dialog manages its files', asy
 
   await page.getByRole('link', { name: 'Fictional reader', exact: true }).click()
   await expect(page.getByTestId('attachments')).toBeVisible()
-  await expect(page.getByTestId('cover-state')).toContainText('PNG')
+  // The cover block is one compact row: preview plus actions, no headings or size hints.
+  await expect(page.getByTestId('cover-preview')).toBeVisible()
+  await expect(page.locator('.cover-row')).not.toContainText('像素不超过')
   await expect(page.locator('.chapter-meta')).toContainText('有音频')
   // The chapter row carries no image: it only has the audio meta and the attachment entry point.
   await expect(page.getByTestId('chapter-thumb-3')).toHaveCount(0)
@@ -224,7 +226,8 @@ test('a book without attachments shows placeholders and no player', async ({ pag
   // The management sections stay: adding a file must be possible before one exists.
   await page.getByRole('link', { name: 'Fictional reader', exact: true }).click()
   await expect(page.getByTestId('attachments')).toBeVisible()
-  await expect(page.getByTestId('cover-state')).toContainText('未设置')
+  await expect(page.getByTestId('cover-preview')).toHaveCount(0)
+  await expect(page.getByTestId('cover-input')).toBeAttached()
   await expect(page.getByTestId('chapter-thumb-3')).toHaveCount(0)
   await page.getByTestId('edit-chapter-3').click()
   await expect(page.getByTestId('illustration-state')).toContainText('未设置')
diff --git a/learner/e2e/edit.spec.ts b/learner/e2e/edit.spec.ts
index 0eedad3..d5f7567 100644
--- a/learner/e2e/edit.spec.ts
+++ b/learner/e2e/edit.spec.ts
@@ -43,6 +43,7 @@ test('rename the book, edit a chapter into a new version and delete both', async
       const body = route.request().postDataJSON() as { title?: string; text?: string }
       const changed = body.text !== undefined && body.text !== firstText
       if (body.title !== undefined) first.title = body.title
+      if (body.author !== undefined) first.author = body.author
       if (changed) {
         firstText = body.text as string
         processing = true
@@ -70,11 +71,12 @@ test('rename the book, edit a chapter into a new version and delete both', async
 
   // Rename the book through the dialog.
   await page.getByTestId('edit-book').click()
+  await expect(page.getByRole('dialog', { name: '编辑书籍' })).toBeVisible()
   await expectModalOverlay(page, page.getByTestId('book-dialog'))
   await expect(page.getByLabel('书名', { exact: true })).toHaveValue('A small step')
   await page.getByLabel('书名', { exact: true }).fill('A long step')
   await page.getByTestId('save-book').click()
-  await expect(page.getByTestId('book-notice')).toContainText('书名已更新')
+  await expect(page.getByTestId('book-notice')).toContainText('书籍信息已更新')
   await expect(page.getByRole('heading', { name: 'A long step' })).toBeVisible()
 
   // Edit the chapter text: the new version re-processes and later becomes ready again.
diff --git a/learner/src/__tests__/attachments.spec.ts b/learner/src/__tests__/attachments.spec.ts
index 33dd204..4c3ef5e 100644
--- a/learner/src/__tests__/attachments.spec.ts
+++ b/learner/src/__tests__/attachments.spec.ts
@@ -12,7 +12,7 @@ import { useSessionStore } from '../stores/session'
 
 const user = { id: 42, username: 'fictional-attachment', role: 'learner' as const }
 const cover = { kind: 'cover' as const, mime: 'image/png', byteSize: 1234, version: 'cover-sha', updatedAt: '2026-09-15T00:00:00Z' }
-const book = { id: 7, title: 'Fictional reader', language: 'en' }
+const book = { id: 7, title: 'Fictional reader', author: '', language: 'en' }
 const pngBytes = new Uint8Array([1, 2, 3, 4])
 const baseChapter = {
   id: 3, bookId: 7, ordinal: 1, title: 'Fictional chapter', author: '', status: 'ready' as const, charCount: 31,
@@ -149,7 +149,13 @@ describe('chapter attachments on the book page', () => {
   it('shows the cover and the chapter audio state without any chapter image', async () => {
     const { fetchMock } = mockApi()
     const { view } = await mountWith(BookView, '/books/7')
-    expect(view.get('[data-testid="cover-state"]').text()).toContain('PNG')
+    // The cover block is one compact row now: preview and actions, no headings or hints.
+    await vi.waitFor(() => expect(useLibraryStore().coverUrls[7]).toBeTruthy())
+    await flushPromises()
+    expect(view.find('[data-testid="cover-preview"]').exists()).toBe(true)
+    expect(view.find('[data-testid="cover-input"]').exists()).toBe(true)
+    expect(view.text()).not.toContain('书籍封面')
+    expect(view.text()).not.toContain('像素不超过')
     await flushPromises()
     // The chapter list shows no illustration and does not fetch one.
     expect(view.find('[data-testid="chapter-thumb-3"]').exists()).toBe(false)
diff --git a/learner/src/__tests__/edit.spec.ts b/learner/src/__tests__/edit.spec.ts
index 8871e37..410f06a 100644
--- a/learner/src/__tests__/edit.spec.ts
+++ b/learner/src/__tests__/edit.spec.ts
@@ -8,7 +8,7 @@ import { useLibraryStore, type ChapterSource, type ChapterSummary } from '../sto
 import { useSessionStore } from '../stores/session'
 
 const user = { id: 42, username: 'fictional-editor', role: 'learner' as const }
-const book = { id: 1, title: 'A small step', language: 'en' }
+const book = { id: 1, title: 'A small step', author: '', language: 'en' }
 const timestamps = { createdAt: '2026-01-01T00:00:00Z', updatedAt: '2026-01-01T00:00:00Z' }
 const chapter = (overrides: Partial<ChapterSummary> = {}): ChapterSummary => ({
   id: 9, bookId: 1, ordinal: 1, title: 'First chapter', author: '', status: 'ready', charCount: 12,
@@ -49,8 +49,8 @@ function mockApi(overrides: Record<string, (init?: RequestInit) => Response | Pr
     if (url.includes('/chapters/9/source')) return ok({ source })
     // A rename answers with the stored book, and a delete reports what it removed.
     if (url.endsWith('/books/1') && method === 'PATCH') {
-      const body = JSON.parse(String((init as RequestInit | undefined)?.body ?? '{}')) as { title?: string }
-      return ok({ book: { ...book, title: body.title ?? book.title } })
+      const body = JSON.parse(String((init as RequestInit | undefined)?.body ?? '{}')) as { title?: string; author?: string }
+      return ok({ book: { ...book, title: body.title ?? book.title, author: body.author ?? book.author } })
     }
     if (url.endsWith('/books/1') && method === 'DELETE') return ok({ deleted: { bookId: 1, chapters: 3 } })
     if (url.endsWith('/books/1')) return ok({ book })
@@ -71,24 +71,26 @@ describe('book editing store', () => {
   beforeEach(() => { setActivePinia(createPinia()); sessionStorage.clear() })
   afterEach(() => { vi.restoreAllMocks() })
 
-  it('renames a book and keeps the list entry in step', async () => {
+  it('saves the title and the author and keeps the list entry in step', async () => {
     const fetchMock = mockApi()
     const library = useLibraryStore()
     library.books = [{ ...book, chapterCount: 1, pendingCount: 0, processingCount: 0, readyCount: 1, failedCount: 0, ...timestamps }]
     library.book = { ...book }
-    const renamed = await library.renameBook(1, '  New name  ')
+    const renamed = await library.updateBook(1, { title: '  New name  ', author: '  Fictional author  ' })
     expect(renamed.title).toBe('New name')
+    expect(renamed.author).toBe('Fictional author')
     expect(library.book?.title).toBe('New name')
     expect(library.books[0]?.title).toBe('New name')
+    expect(library.books[0]?.author).toBe('Fictional author')
     const call = fetchMock.mock.calls.find(([, init]) => (init as RequestInit | undefined)?.method === 'PATCH')!
     expect(String(call[0])).toBe('/api/v1/books/1')
-    expect(JSON.parse(String((call[1] as RequestInit).body))).toEqual({ title: 'New name' })
+    expect(JSON.parse(String((call[1] as RequestInit).body))).toEqual({ title: 'New name', author: 'Fictional author' })
   })
 
   it('refuses an invalid title before calling the API', async () => {
     const fetchMock = mockApi()
     const library = useLibraryStore()
-    await expect(library.renameBook(1, '   ')).rejects.toThrow('请填写标题')
+    await expect(library.updateBook(1, { title: '   ', author: '' })).rejects.toThrow('请填写标题')
     expect(fetchMock).not.toHaveBeenCalled()
   })
 
@@ -155,10 +157,14 @@ describe('book editing view', () => {
     const input = view.get('#book-title')
     expect((input.element as HTMLInputElement).value).toBe('A small step')
     await input.setValue('  Edited name  ')
+    // The same dialog also carries the book author.
+    expect(view.find('[data-testid="book-author-input"]').exists()).toBe(true)
+    await view.get('[data-testid="book-author-input"]').setValue('  Fictional author  ')
     await view.get('[data-testid="save-book"]').trigger('click'); await flushPromises()
     const patch = fetchMock.mock.calls.find(([, init]) => (init as RequestInit | undefined)?.method === 'PATCH')!
-    expect(JSON.parse(String((patch[1] as RequestInit).body))).toEqual({ title: 'Edited name' })
-    expect(view.get('[data-testid="book-notice"]').text()).toContain('书名已更新')
+    expect(JSON.parse(String((patch[1] as RequestInit).body))).toEqual({ title: 'Edited name', author: 'Fictional author' })
+    expect(view.get('[data-testid="book-notice"]').text()).toContain('书籍信息已更新')
+    expect(view.get('[data-testid="book-author"]').text()).toBe('Fictional author')
   })
 
   it('keeps the dialog open with the server message when renaming fails', async () => {
diff --git a/learner/src/__tests__/library.spec.ts b/learner/src/__tests__/library.spec.ts
index 7d1cabf..a2f7cec 100644
--- a/learner/src/__tests__/library.spec.ts
+++ b/learner/src/__tests__/library.spec.ts
@@ -13,7 +13,7 @@ import { useSessionStore } from '../stores/session'
 
 // All accounts, books and texts in these tests are deliberately fictitious.
 const user = { id: 7, username: 'fictional-reader', role: 'learner' as const }
-const book = { id: 1, title: '虚构样例书', language: 'en' }
+const book = { id: 1, title: '虚构样例书', author: '', language: 'en' }
 const navigation = { previousChapterId: null, nextChapterId: null }
 
 const ok = (data: unknown) => new Response(JSON.stringify({ code: 200, data }), { status: 200 })
diff --git a/learner/src/__tests__/progress.spec.ts b/learner/src/__tests__/progress.spec.ts
index 2e20ca7..780d73d 100644
--- a/learner/src/__tests__/progress.spec.ts
+++ b/learner/src/__tests__/progress.spec.ts
@@ -175,7 +175,7 @@ describe('library completion action', () => {
       const url = String(input)
       if (url.includes('/chapters/3') && !url.includes('complete')) {
         return ok({
-          book: { id: 7, title: 'Fictional reader', language: 'en' },
+          book: { id: 7, title: 'Fictional reader', author: '', language: 'en' },
           chapter: { id: 3, bookId: 7, ordinal: 1, title: 'Fictional chapter', author: '', status: 'ready', charCount: 31, errorReason: '', errorMessage: '', jobId: 9, readAt: null, createdAt: '', updatedAt: '', contentSha256: 'sha', originalText: 'Curiosity opens the first door.\n' },
           navigation: { previousChapterId: null, nextChapterId: null },
         })
@@ -226,7 +226,7 @@ describe('library completion action', () => {
       if (url.includes('/tokens')) return ok({ tokens: [] })
       if (url.includes('/chapters/3')) {
         return ok({
-          book: { id: 7, title: 'Fictional reader', language: 'en' },
+          book: { id: 7, title: 'Fictional reader', author: '', language: 'en' },
           chapter: { id: 3, bookId: 7, ordinal: 1, title: 'Fictional chapter', author: '', status: 'ready', charCount: 31, errorReason: '', errorMessage: '', jobId: 9, readAt: null, createdAt: '', updatedAt: '', contentSha256: 'sha', originalText: 'Curiosity opens the first door.\n' },
           navigation: { previousChapterId: null, nextChapterId: null },
         })
diff --git a/learner/src/stores/library.ts b/learner/src/stores/library.ts
index a792187..baa4bef 100644
--- a/learner/src/stores/library.ts
+++ b/learner/src/stores/library.ts
@@ -33,6 +33,8 @@ export interface ChapterAttachment {
 export interface BookRef {
   id: number
   title: string
+  /** Optional free text for the book itself; chapters carry their own author. */
+  author: string
   language: string
   attachments?: BookAttachments | null
 }
@@ -520,17 +522,22 @@ export const useLibraryStore = defineStore('library', () => {
     }
   }
 
-  /** Renames one owned book; the reply is the stored book. */
-  async function renameBook(id: number, title: string): Promise<BookRef> {
+  /** Saves the title (and the optional author) of one owned book; the reply is the stored book. */
+  async function updateBook(id: number, input: { title: string; author: string }): Promise<BookRef> {
     const version = generation
     const owner = ownerId()
-    const problem = titleProblem(title)
+    const problem = titleProblem(input.title)
     if (problem) throw new Error(problem)
-    const result = await session.request<{ book: BookRef }>(`books/${id}`, 'PATCH', { title: title.trim() })
+    const result = await session.request<{ book: BookRef }>(`books/${id}`, 'PATCH', {
+      title: input.title.trim(), author: input.author.trim(),
+    })
     if (!isStale(version, owner)) {
       book.value = result.book
       const listed = books.value.find(item => item.id === id)
-      if (listed) listed.title = result.book.title
+      if (listed) {
+        listed.title = result.book.title
+        listed.author = result.book.author
+      }
     }
     return result.book
   }
@@ -943,7 +950,7 @@ export const useLibraryStore = defineStore('library', () => {
     uploadCover, deleteCover, uploadChapterFile, deleteChapterFile, saveChapterPlayback, reportChapterPlayback,
     uploadingKind, uploadingId,
     coverUrls, illustrationUrls, audioUrl, audioChapterId, loadCover, loadChapterIllustration, loadChapterAudio,
-    renameBook, updateChapter, loadChapterSource, deleteBook, deleteChapter,
+    updateBook, updateChapter, loadChapterSource, deleteBook, deleteChapter,
     stopPolling, closeBook, closeChapter, reset,
   }
 })
diff --git a/learner/src/style.css b/learner/src/style.css
index b10c452..56dac91 100644
--- a/learner/src/style.css
+++ b/learner/src/style.css
@@ -354,6 +354,18 @@ button:focus-visible, a:focus-visible, [role='button']:focus-visible,
 .illustration-thumb:focus-visible { outline: 3px solid var(--accent-marker); outline-offset: 3px; }
 .illustration-hint { font-size: 12px; color: var(--text-muted); }
 .illustration-full { display: block; max-width: min(88vw, 1200px); max-height: 78vh; width: auto; height: auto; object-fit: contain; }
+/* The book page keeps the cover control to one compact row so the chapter list gets the space. */
+.cover-row { display: flex; align-items: center; gap: 14px; margin: 0 0 18px; }
+.cover-preview { flex: 0 0 120px; aspect-ratio: 16 / 9; border-radius: 10px; overflow: hidden; background: var(--accent-soft); }
+.cover-preview img { width: 100%; height: 100%; object-fit: cover; display: block; }
+.cover-actions { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
+.cover-actions input[type='file'] { position: absolute; width: 1px; height: 1px; opacity: 0; overflow: hidden; }
+.cover-actions label { position: relative; cursor: pointer; border: 1px solid var(--border-strong); border-radius: 20px; padding: 0 14px; background: var(--surface-raised); }
+.cover-actions label.is-busy { opacity: 0.6; cursor: progress; }
+/* The book title shows its author next to it. */
+.title-line { display: flex; align-items: baseline; gap: 12px; flex-wrap: wrap; }
+.title-line h1 { margin: 14px 0 6px; }
+.book-author { color: var(--text-muted); font-size: 15px; }
 /* Book covers: the card shows the stored image or a default block built from the title. */
 .book-cover { display: block; aspect-ratio: 16 / 9; border-radius: 10px; overflow: hidden; background: var(--accent-soft); text-decoration: none; }
 .book-cover img { width: 100%; height: 100%; object-fit: cover; display: block; }
diff --git a/learner/src/views/BookView.vue b/learner/src/views/BookView.vue
index 320c417..a88cb83 100644
--- a/learner/src/views/BookView.vue
+++ b/learner/src/views/BookView.vue
@@ -16,6 +16,7 @@ const notice = ref('')
 // Renaming the book.
 const bookDialog = ref(false)
 const bookTitle = ref('')
+const bookAuthor = ref('')
 const bookError = ref('')
 // Editing one chapter: title and text, loaded from the source endpoint.
 const chapterDialog = ref(false)
@@ -214,6 +215,7 @@ async function retry(chapterId: number) {
 
 function openBookDialog() {
   bookTitle.value = library.book?.title ?? ''
+  bookAuthor.value = library.book?.author ?? ''
   bookError.value = ''
   bookDialog.value = true
 }
@@ -224,9 +226,9 @@ async function saveBookTitle() {
   if (bookError.value) return
   saving.value = true
   try {
-    await library.renameBook(library.book.id, bookTitle.value)
+    await library.updateBook(library.book.id, { title: bookTitle.value, author: bookAuthor.value })
     bookDialog.value = false
-    notice.value = '书名已更新。'
+    notice.value = '书籍信息已更新。'
   } catch (reason) {
     bookError.value = reason instanceof Error ? reason.message : '保存失败，请稍后重试。'
   } finally {
@@ -339,37 +341,31 @@ onUnmounted(() => library.closeBook())
       <template v-else-if="library.book">
         <div class="page-title">
           <div>
-            <h1>{{ library.book.title }}</h1>
+            <div class="title-line">
+              <h1>{{ library.book.title }}</h1>
+              <span v-if="library.book.author" class="book-author" data-testid="book-author">{{ library.book.author }}</span>
+            </div>
             <p class="subtle">{{ library.chapters.length }} 个章节 · 语言 英语</p>
           </div>
           <div class="page-actions">
-            <ElButton data-testid="edit-book" @click="openBookDialog">编辑书名</ElButton>
+            <ElButton data-testid="edit-book" @click="openBookDialog">编辑书籍</ElButton>
             <RouterLink :to="`/import?book=${library.book.id}`" class="link-button">追加章节</RouterLink>
             <ElButton type="danger" plain data-testid="delete-book" @click="confirmDeleteBook">删除书籍</ElButton>
           </div>
         </div>
         <p v-if="notice" role="status" class="chapter-notice" data-testid="book-notice">{{ notice }}</p>
-        <section class="attachments" aria-label="封面与章节附件" data-testid="attachments">
-          <h2>封面</h2>
-          <div class="attachment-row">
-            <div class="attachment-preview">
-              <img v-if="library.coverUrls[library.book.id]" :src="library.coverUrls[library.book.id]" alt="当前封面" data-testid="cover-preview" />
-              <span v-else class="book-cover-default" aria-hidden="true">{{ library.book.title.slice(0, 1) }}</span>
-            </div>
-            <div class="attachment-info">
-              <p class="attachment-label">书籍封面</p>
-              <p class="subtle" data-testid="cover-state">{{ coverState }}</p>
-              <p v-if="coverError" role="alert" class="field-error">{{ coverError }}</p>
-              <div class="attachment-actions">
-                <label class="link-button" :class="{ 'is-busy': library.uploadingKind === 'cover' }">
-                  {{ library.book.attachments?.cover ? '替换封面' : '上传封面' }}
-                  <input type="file" accept="image/jpeg,image/png,image/webp" data-testid="cover-input" :disabled="library.uploadingKind !== null" @change="onCoverPicked" />
-                </label>
-                <ElButton v-if="library.book.attachments?.cover" size="small" :disabled="library.uploadingKind !== null" data-testid="cover-remove" @click="removeCover">移除</ElButton>
-              </div>
-              <p class="subtle">JPG、PNG 或 WebP，最大 2 MiB，像素不超过 4096×4096。</p>
-              <p class="subtle">音频与插图按章节设置，见下方章节列表的「附件」。</p>
-            </div>
+        <section class="cover-row" aria-label="书籍封面" data-testid="attachments">
+          <div class="cover-preview">
+            <img v-if="library.coverUrls[library.book.id]" :src="library.coverUrls[library.book.id]" alt="当前封面" data-testid="cover-preview" />
+            <span v-else class="book-cover-default" aria-hidden="true">{{ library.book.title.slice(0, 1) }}</span>
+          </div>
+          <div class="cover-actions">
+            <label class="link-button" :class="{ 'is-busy': library.uploadingKind === 'cover' }">
+              {{ library.book.attachments?.cover ? '替换封面' : '上传封面' }}
+              <input type="file" accept="image/jpeg,image/png,image/webp" data-testid="cover-input" :disabled="library.uploadingKind !== null" @change="onCoverPicked" />
+            </label>
+            <ElButton v-if="library.book.attachments?.cover" size="small" text :disabled="library.uploadingKind !== null" data-testid="cover-remove" @click="removeCover">移除</ElButton>
+            <span v-if="coverError" role="alert" class="field-error">{{ coverError }}</span>
           </div>
         </section>
         <p v-if="retryError" role="alert" class="notice">{{ retryError }}</p>
@@ -402,10 +398,15 @@ onUnmounted(() => library.closeBook())
         </section>
       </template>
 
-      <ElDialog v-model="bookDialog" title="编辑书名" width="420" data-testid="book-dialog">
-        <label for="book-title">书名</label>
-        <ElInput id="book-title" v-model="bookTitle" type="text" maxlength="200" :disabled="saving" />
-        <p class="subtle">封面使用系统默认样式。</p>
+      <ElDialog v-model="bookDialog" title="编辑书籍" width="460" data-testid="book-dialog">
+        <div class="field-row">
+          <label for="book-title">书名</label>
+          <ElInput id="book-title" v-model="bookTitle" type="text" maxlength="200" :disabled="saving" />
+        </div>
+        <div class="field-row">
+          <label for="book-author">作者</label>
+          <ElInput id="book-author" v-model="bookAuthor" type="text" maxlength="120" placeholder="可留空" :disabled="saving" data-testid="book-author-input" />
+        </div>
         <p v-if="bookError" role="alert" class="field-error">{{ bookError }}</p>
         <template #footer>
           <ElButton @click="bookDialog = false">取消</ElButton>
diff --git a/server/app/lexgo/database.go b/server/app/lexgo/database.go
index 888573a..694b580 100644
--- a/server/app/lexgo/database.go
+++ b/server/app/lexgo/database.go
@@ -100,12 +100,17 @@ func Migrate(db *gorm.DB) error {
 			return fmt.Errorf("migration statement %d failed", i+1)
 		}
 	}
+	// The author columns are added conditionally after the statements above: MySQL has no
+	// ADD COLUMN IF NOT EXISTS, an older database only gains its book and chapter tables in those
+	// statements, and the version row is still advanced only once everything succeeded, so a
+	// partially applied or rolled-back migration can be replayed.
 	if current < 10 {
-		// v10 adds the chapter author. MySQL has no ADD COLUMN IF NOT EXISTS, so the column is added
-		// conditionally: it has to run after the statements above, because an older database only
-		// gains its chapter table there, and the version row is still only advanced once everything
-		// succeeded, so a rolled-back marker can be upgraded again.
-		if err = addChapterAuthorColumn(ctx, conn); err != nil {
+		if err = addAuthorColumn(ctx, conn, "lexgo_chapters"); err != nil {
+			return err
+		}
+	}
+	if current < 11 {
+		if err = addAuthorColumn(ctx, conn, "lexgo_books"); err != nil {
 			return err
 		}
 	}
@@ -115,20 +120,21 @@ func Migrate(db *gorm.DB) error {
 
 // SchemaVersion is the version an explicit migration leaves behind, and the
 // version the server requires before it starts.
-const SchemaVersion = 10
+const SchemaVersion = 11
 
-// addChapterAuthorColumn adds lexgo_chapters.author when it is missing, so replaying the migration
-// stays safe just like the CREATE TABLE IF NOT EXISTS statements around it.
-func addChapterAuthorColumn(ctx context.Context, conn *sql.Conn) error {
+// addAuthorColumn adds an optional author column when it is missing, so replaying the migration
+// stays safe just like the CREATE TABLE IF NOT EXISTS statements around it. The table name is a
+// constant from this file, never user input.
+func addAuthorColumn(ctx context.Context, conn *sql.Conn, table string) error {
 	var exists int
 	if err := conn.QueryRowContext(ctx,
-		"SELECT COUNT(*) FROM information_schema.COLUMNS WHERE TABLE_SCHEMA = DATABASE() AND TABLE_NAME = 'lexgo_chapters' AND COLUMN_NAME = 'author'").Scan(&exists); err != nil {
+		"SELECT COUNT(*) FROM information_schema.COLUMNS WHERE TABLE_SCHEMA = DATABASE() AND TABLE_NAME = ? AND COLUMN_NAME = 'author'", table).Scan(&exists); err != nil {
 		return err
 	}
 	if exists > 0 {
 		return nil
 	}
-	_, err := conn.ExecContext(ctx, "ALTER TABLE lexgo_chapters ADD COLUMN author VARCHAR(120) NOT NULL DEFAULT ''")
+	_, err := conn.ExecContext(ctx, "ALTER TABLE `"+table+"` ADD COLUMN author VARCHAR(120) NOT NULL DEFAULT ''")
 	return err
 }
 
@@ -313,7 +319,8 @@ var schemaV2Statements = []string{
 var schemaV3Statements = []string{
 	`CREATE TABLE IF NOT EXISTS lexgo_books (
 		id BIGINT UNSIGNED PRIMARY KEY AUTO_INCREMENT, owner_id BIGINT NOT NULL,
-		title VARCHAR(120) NOT NULL, language VARCHAR(16) NOT NULL DEFAULT 'en',
+		title VARCHAR(120) NOT NULL, author VARCHAR(120) NOT NULL DEFAULT '',
+		language VARCHAR(16) NOT NULL DEFAULT 'en',
 		created_at DATETIME(3) NOT NULL, updated_at DATETIME(3) NOT NULL,
 		INDEX (owner_id, updated_at, id),
 		FOREIGN KEY (owner_id) REFERENCES sys_user(user_id) ON DELETE CASCADE
diff --git a/server/app/lexgo/edit.go b/server/app/lexgo/edit.go
index 9ba0e15..345e492 100644
--- a/server/app/lexgo/edit.go
+++ b/server/app/lexgo/edit.go
@@ -17,7 +17,8 @@ import (
 // review rows or answers: those belong to the learner, not to a book or a chapter.
 
 type BookUpdateInput struct {
-	Title string `json:"title"`
+	Title  string  `json:"title"`
+	Author *string `json:"author"`
 }
 
 type ChapterUpdateInput struct {
@@ -98,9 +99,20 @@ func RenameBook(tx *gorm.DB, owner int, bookID int64, input BookUpdateInput, now
 		return BookRef{}, err
 	}
 	book.Title = title
-	book.UpdatedAt = stamp(now)
+	ts := stamp(now)
+	updates := map[string]any{"title": title, "updated_at": ts}
+	// The author is optional; omitting it leaves whatever the book already had.
+	if input.Author != nil {
+		author, err := editAuthor(*input.Author)
+		if err != nil {
+			return BookRef{}, err
+		}
+		book.Author = author
+		updates["author"] = author
+	}
+	book.UpdatedAt = ts
 	if err = tx.Model(&Book{}).Where("id = ? AND owner_id = ?", book.ID, owner).
-		Updates(map[string]any{"title": title, "updated_at": book.UpdatedAt}).Error; err != nil {
+		Updates(updates).Error; err != nil {
 		return BookRef{}, err
 	}
 	return bookRef(book), nil
diff --git a/server/app/lexgo/edit_test.go b/server/app/lexgo/edit_test.go
index 350c3cd..e7ae360 100644
--- a/server/app/lexgo/edit_test.go
+++ b/server/app/lexgo/edit_test.go
@@ -626,3 +626,96 @@ func TestMySQLChapterAuthorRoundTrip(t *testing.T) {
 		t.Fatal("an empty edit must still be rejected")
 	}
 }
+
+// TestMySQLBookAuthorRoundTrip covers the book author: it is saved with the title, list and detail
+// carry it, it is trimmed and capped, and an empty author clears it.
+func TestMySQLBookAuthorRoundTrip(t *testing.T) {
+	db, r, owner := libraryFixture(t)
+	learner := newLearner(t, r, owner.Token)
+	code, pasted := pasteBook(t, r, learner.Token, map[string]string{
+		"requestId": "book-author-0001", "title": "Fictional book author", "text": "Curiosity opens the first door." + string(rune(10)), "language": "en"})
+	if code != 201 {
+		t.Fatalf("paste %d", code)
+	}
+	drainIngest(t, db)
+	bookID := pasted.Chapter.BookID
+
+	// A new book has no author.
+	book, _ := bookDetailOf(t, r, learner.Token, bookID)
+	if book.Author != "" {
+		t.Fatalf("a new book must have no author, got %q", book.Author)
+	}
+
+	// The title and the author are saved together, and the author is trimmed.
+	code, msg, data := callRaw(t, r, "PATCH", fmt.Sprintf("/api/v1/books/%d", bookID), learner.Token,
+		map[string]any{"title": "Fictional book author", "author": "  虚构书籍作者  "})
+	if code != 200 {
+		t.Fatalf("book edit: %d %s", code, msg)
+	}
+	var edited struct {
+		Book BookRef
+	}
+	if err := json.Unmarshal(data, &edited); err != nil {
+		t.Fatal(err)
+	}
+	if edited.Book.Author != "虚构书籍作者" || edited.Book.Title != "Fictional book author" {
+		t.Fatalf("book edit result: %+v", edited.Book)
+	}
+	code, _, listed := callRaw(t, r, "GET", "/api/v1/books", learner.Token, nil)
+	if code != 200 {
+		t.Fatalf("book list %d", code)
+	}
+	var page struct {
+		Items []BookSummary
+	}
+	if err := json.Unmarshal(listed, &page); err != nil {
+		t.Fatal(err)
+	}
+	if len(page.Items) != 1 || page.Items[0].Author != "虚构书籍作者" {
+		t.Fatalf("the book list must carry the author: %+v", page.Items)
+	}
+	book, _ = bookDetailOf(t, r, learner.Token, bookID)
+	if book.Author != "虚构书籍作者" {
+		t.Fatalf("the book detail must carry the author: %+v", book)
+	}
+	// The reader response carries the book too, so a chapter page can show it if needed.
+	code, _, reader := callRaw(t, r, "GET", fmt.Sprintf("/api/v1/chapters/%d", pasted.Chapter.ID), learner.Token, nil)
+	if code != 200 {
+		t.Fatalf("reader %d", code)
+	}
+	var read struct {
+		Book BookRef
+	}
+	if err := json.Unmarshal(reader, &read); err != nil {
+		t.Fatal(err)
+	}
+	if read.Book.Author != "虚构书籍作者" {
+		t.Fatalf("the reader response must carry the book author: %+v", read.Book)
+	}
+
+	// Omitting the author keeps it, a blank author clears it, and the length is capped.
+	if code, _, _ := callRaw(t, r, "PATCH", fmt.Sprintf("/api/v1/books/%d", bookID), learner.Token,
+		map[string]any{"title": "Fictional book author"}); code != 200 {
+		t.Fatal("a title-only edit must be accepted")
+	}
+	if book, _ = bookDetailOf(t, r, learner.Token, bookID); book.Author != "虚构书籍作者" {
+		t.Fatalf("omitting the author must keep it, got %q", book.Author)
+	}
+	if code, _, _ := callRaw(t, r, "PATCH", fmt.Sprintf("/api/v1/books/%d", bookID), learner.Token,
+		map[string]any{"title": "Fictional book author", "author": "   "}); code != 200 {
+		t.Fatal("clearing the author must be allowed")
+	}
+	if book, _ = bookDetailOf(t, r, learner.Token, bookID); book.Author != "" {
+		t.Fatalf("a blank author must clear the field, got %q", book.Author)
+	}
+	if code, _, _ := callRaw(t, r, "PATCH", fmt.Sprintf("/api/v1/books/%d", bookID), learner.Token,
+		map[string]any{"title": "Fictional book author", "author": strings.Repeat("a", 121)}); code != 400 {
+		t.Fatal("an over-long author must be rejected")
+	}
+	// Ownership still applies.
+	other := newLearner(t, r, owner.Token)
+	if code, _, _ := callRaw(t, r, "PATCH", fmt.Sprintf("/api/v1/books/%d", bookID), other.Token,
+		map[string]any{"title": "stolen", "author": "stolen"}); code != 404 {
+		t.Fatal("another account must not edit the book")
+	}
+}
diff --git a/server/app/lexgo/library.go b/server/app/lexgo/library.go
index 04c0249..12129e0 100644
--- a/server/app/lexgo/library.go
+++ b/server/app/lexgo/library.go
@@ -67,9 +67,11 @@ func reasonMessage(reason string) string {
 }
 
 type Book struct {
-	ID        int64 `gorm:"primaryKey"`
-	OwnerID   int
-	Title     string
+	ID      int64 `gorm:"primaryKey"`
+	OwnerID int
+	Title   string
+	// Author is optional free text for the book itself; a chapter has its own author.
+	Author    string
 	Language  string
 	CreatedAt time.Time
 	UpdatedAt time.Time
@@ -116,6 +118,7 @@ func (IngestJob) TableName() string { return "lexgo_ingest_jobs" }
 type BookSummary struct {
 	ID              int64  `json:"id"`
 	Title           string `json:"title"`
+	Author          string `json:"author"`
 	Language        string `json:"language"`
 	ChapterCount    int    `json:"chapterCount"`
 	PendingCount    int    `json:"pendingCount"`
@@ -132,6 +135,7 @@ type BookSummary struct {
 type BookRef struct {
 	ID       int64  `json:"id"`
 	Title    string `json:"title"`
+	Author   string `json:"author"`
 	Language string `json:"language"`
 	// Attachments is filled by the endpoints that show a book, so a cover can be rendered from the
 	// list without a request per row.
@@ -139,7 +143,7 @@ type BookRef struct {
 }
 
 func bookRef(book Book) BookRef {
-	return BookRef{ID: book.ID, Title: book.Title, Language: book.Language}
+	return BookRef{ID: book.ID, Title: book.Title, Author: book.Author, Language: book.Language}
 }
 
 type ChapterSummary struct {
@@ -501,7 +505,7 @@ func ListBooks(db *gorm.DB, owner int) ([]BookSummary, error) {
 	items := make([]BookSummary, 0, len(books))
 	ids := make([]int64, 0, len(books))
 	for _, b := range books {
-		items = append(items, BookSummary{ID: b.ID, Title: b.Title, Language: b.Language, CreatedAt: b.CreatedAt, UpdatedAt: b.UpdatedAt})
+		items = append(items, BookSummary{ID: b.ID, Title: b.Title, Author: b.Author, Language: b.Language, CreatedAt: b.CreatedAt, UpdatedAt: b.UpdatedAt})
 		ids = append(ids, b.ID)
 	}
 	if len(ids) == 0 {
diff --git a/server/app/lexgo/migration_test.go b/server/app/lexgo/migration_test.go
index 576e993..eeb8566 100644
--- a/server/app/lexgo/migration_test.go
+++ b/server/app/lexgo/migration_test.go
@@ -727,3 +727,65 @@ func TestMigrationFromV9AddsChapterAuthor(t *testing.T) {
 		t.Fatalf("re-upgrade must keep the author, got %q", restored.Author)
 	}
 }
+
+func TestMigrationFromV10AddsBookAuthor(t *testing.T) {
+	db := emptyMigrationDB(t)
+	statements := []string{"CREATE TABLE lexgo_schema (id INT PRIMARY KEY,version INT,product VARCHAR(32))", "INSERT INTO lexgo_schema VALUES (1,10,'lexgo')"}
+	statements = append(statements, schemaV2Statements...)
+	statements = append(statements, schemaV3Statements...)
+	statements = append(statements, schemaV4Statements...)
+	statements = append(statements, schemaV5Statements...)
+	statements = append(statements, schemaV6Statements...)
+	statements = append(statements, schemaV7Statements...)
+	statements = append(statements, schemaV8Statements...)
+	statements = append(statements, schemaV9Statements...)
+	for _, statement := range statements {
+		if err := db.Exec(statement).Error; err != nil {
+			t.Fatal(err)
+		}
+	}
+	// Model the database v10 left behind: a book table without the author column.
+	if err := db.Exec("ALTER TABLE lexgo_books DROP COLUMN author").Error; err == nil {
+		t.Log("dropped the author column created by the v3 statements")
+	}
+	if err := db.Exec("INSERT INTO sys_user (user_id,username,password,role_id) VALUES (61,'fixture_v10','fictional-not-a-real-hash',2)").Error; err != nil {
+		t.Fatal(err)
+	}
+	saved := stamp(time.Now())
+	if err := db.Exec("INSERT INTO lexgo_books (id, owner_id, title, language, created_at, updated_at) VALUES (?,?,?,?,?,?)",
+		900, 61, "Fictional v10 book", "en", saved, saved).Error; err != nil {
+		t.Fatal(err)
+	}
+	if err := CheckSchema(db); err == nil {
+		t.Fatal("old schema accepted before explicit migration")
+	}
+	if err := Migrate(db); err != nil {
+		t.Fatal(err)
+	}
+	if err := CheckSchema(db); err != nil {
+		t.Fatal(err)
+	}
+	var book Book
+	if err := db.Where("id = ?", 900).First(&book).Error; err != nil {
+		t.Fatal(err)
+	}
+	if book.Author != "" || book.Title != "Fictional v10 book" {
+		t.Fatalf("migration changed the book: %+v", book)
+	}
+	if err := db.Exec("UPDATE lexgo_books SET author = ? WHERE id = ?", "虚构书籍作者", 900).Error; err != nil {
+		t.Fatal(err)
+	}
+	// Replaying the migration must not fail on the column that is already there.
+	if err := db.Exec("UPDATE lexgo_schema SET version=10 WHERE id=1").Error; err != nil {
+		t.Fatal(err)
+	}
+	if err := Migrate(db); err != nil {
+		t.Fatal(err)
+	}
+	if err := db.Where("id = ?", 900).First(&book).Error; err != nil {
+		t.Fatal(err)
+	}
+	if book.Author != "虚构书籍作者" {
+		t.Fatalf("re-upgrade must keep the book author, got %q", book.Author)
+	}
+}