Feat(bookshelf): Support displaying book title and author on default cover with responsive scaling

Feat(ai): Support unlimited custom AI prompts with horizontal scrollable quick access

Feat(ai): Support toggling AI panel position between right side and bottom in large screen mode

Feat(sync): Add comprehensive WebDAV test (create, upload, download, delete) for connection validation

Feat(window): Support window position and size memory on macOS

Feat(import): Use original filename when book metadata title is missing or invalid

Feat(import): Add detailed error message display for failed book imports with info dialog @navono

UI(reader): Optimize reading history navigation button design

Fix(reader): Fix image loading issue in non-standard EPUBs with missing manifest entries

Fix(reader): Fix AI quick prompt chips overlapping issue

Fix(reader): Fix PDF files with invalid TOC destinations failing to open

Fix(reader): Fix reading info center alignment in header and footer

Fix(reader): Fix search results scroll position not being preserved when returning from a result

Fix(reader): Fix font-size adjustment not working for CSS keyword values (medium, large, etc.)

Fix(statistics): Fix reading progress not being saved when opening books from continue reading tile

Fix(sync): Fix WebDAV sync showing multiple direction selection dialogs

Fix(ai_services): update Gemini service URL and model version

Fix(window): Fix window becoming inaccessible after disconnecting secondary display

Fix(sync): Fix WebDAV sync failure on Android devices with older SQLite versions

Fix(import): Fix cross-platform path handling issues on Windows @navono

Fix(bookshelf): Fix replace book file feature not converting TXT files to EPUB before replacement

Fix(import): Enhance EPUB cover extraction with fallback strategies for non-standard formats

Fix(bookshelf): Fix stacked view showing sharp corners when cover width is narrow (#727)

Feat(reader): 添加代码语法高亮，支持 12 种主题, 60+ 编程语言

Perf(reader): 优化翻页流畅度，修复安卓设备惯性滚动问题

Fix(reader): 修改自动翻译选中文本的默认设置为关闭

Feat(reader): 添加标题字体大小调节滑块

Feat(reader): 添加单双栏切换阈值自定义功能

Feat(reader): 添加阅读器历史导航玻璃拟态胶囊

Feat(reader): 支持手动控制历史导航显隐（不自动隐藏）

Feat(reader): 支持手动选择并记忆日夜背景图偏好

Feat(reader): 支持自定义翻页区域配置（3x3网格）

Feat(reader): 添加"使用书籍样式"开关，保留书籍原始样式

Feat(reader): 添加鼠标悬浮在顶部/底部时显示菜单的开关

Feat(reader): 添加图片查看器鼠标滚轮缩放支持

Feat(bookshelf): 支持在默认封面上显示书名和作者，支持响应式缩放

Feat(ai): 支持无限制自定义AI提示词，快捷访问支持横向滚动

Feat(ai): 支持切换 AI 面板位置（右侧/底部），适用于大屏模式

Feat(sync): 添加 WebDAV 完整测试功能（创建、上传、下载、删除），全面验证连接

Feat(window): 支持 macOS 记忆窗口位置和大小

Fix(statistics): 修复从继续阅读卡片打开书籍时阅读进度无法保存的问题

Feat(import): 当书籍元数据标题缺失或无效时，使用原始文件名

Feat(import): 添加书籍导入失败时的详细错误信息显示和信息对话框 @navono

UI(reader): 优化阅读历史导航按钮设计

Fix(reader): 修复不规范 EPUB（manifest 缺失资源声明）中图片无法加载的问题

Fix(reader): 修复AI快速提示重叠问题

Fix(reader): 修复包含无效目录的 PDF 文件无法打开的问题

Fix(reader): 修复页眉页脚阅读信息居中对齐问题

Fix(reader): 修复点击搜索结果后重新打开搜索抽屉时滚动位置丢失的问题

Fix(reader): 修复使用 CSS 关键字值（medium、large 等）的字体大小无法调节的问题

Fix(sync): 修复 WebDAV 同步时出现多个方向选择弹窗的问题

Fix(ai_services): 更新 Gemini 服务 URL 和模型版本

Fix(window): 修复断开副屏后窗口位置不可访问的问题

Fix(sync): 修复 Android 旧版 SQLite 设备 WebDAV 同步失败问题

Fix(import): 修复 Windows 平台路径处理问题 @navono

Fix(bookshelf): 修复替换书籍文件功能未将 TXT 文件转换为 EPUB 的问题

Fix(import): 增强 EPUB 封面提取功能，支持非标准格式的多种回退策略

Fix(bookshelf): 修复当封面宽度较低时书架重叠视图存在异常的直角边的问题 (#727)