feat: deliver P2 v0.2.0 with unified editor, search, and snapshots

Implement schema v2 migration, outline/setting/inspiration CRUD, unified TipTap editing, reference panel with mentions, FTS global search, chapter version history, writing landmarks, word frequency analysis, light theme contrast fixes, and full unit/E2E test coverage.

Co-authored-by: Cursor <cursoragent@cursor.com>

public/locales/zh-CN/translation.json

@@ -68,6 +68,7 @@
   "toast.bookCreated": "书籍已创建",
   "toast.saveFailed": "保存失败，请重试",
   "toast.enterBookName": "请输入书名",
+  "toast.noBookOpen": "未打开书籍",
   "shortcuts.saveChapter": "保存章节",
   "shortcuts.newChapter": "新建章节",
   "shortcuts.focusMode": "专注模式",
@@ -83,5 +84,60 @@
   "shortcuts.recordHint": "请按下新的快捷键组合（Esc 取消）",
   "shortcuts.recording": "录制中…",
   "shortcuts.conflict": "该快捷键已被其他功能占用",
-  "shortcuts.registerFailed": "快捷键注册失败，可能与其他应用冲突"
+  "shortcuts.registerFailed": "快捷键注册失败，可能与其他应用冲突",
+  "outline.new": "新建大纲",
+  "outline.newItem": "新大纲节点",
+  "outline.empty": "暂无大纲，点击下方新建",
+  "setting.new": "新建设定",
+  "setting.empty": "暂无设定",
+  "setting.typeLabel": "类型",
+  "setting.nameLabel": "名称",
+  "setting.type.character": "角色",
+  "setting.type.location": "地点",
+  "setting.type.item": "物品",
+  "setting.type.skill": "技能",
+  "setting.type.faction": "势力",
+  "setting.type.custom": "自定义",
+  "inspiration.new": "新建灵感",
+  "inspiration.newItem": "新灵感",
+  "inspiration.empty": "暂无灵感",
+  "inspiration.untitled": "未命名",
+  "inspiration.noContent": "（无内容）",
+  "outline.filterAll": "全部",
+  "outline.filterUncovered": "未覆盖",
+  "outline.filterCovered": "已覆盖",
+  "outline.compare": "对照",
+  "outline.compareTitle": "大纲-正文对照",
+  "outline.exitCompare": "退出对照",
+  "outline.emptyFilter": "无匹配条目",
+  "outline.notWritten": "尚未写作",
+  "outline.noContent": "暂无内容",
+  "outline.expected": "预期",
+  "outline.actual": "实际",
+  "outline.deviation": "偏差",
+  "outline.jumpEditor": "跳转编辑器",
+  "reference.title": "引用面板",
+  "reference.search": "搜索引用…",
+  "reference.tab.setting": "设定",
+  "reference.tab.outline": "大纲",
+  "reference.tab.inspiration": "灵感",
+  "search.title": "全局搜索",
+  "search.placeholder": "输入搜索词…",
+  "search.regex": "正则",
+  "search.caseSensitive": "区分大小写",
+  "version.title": "版本历史",
+  "version.empty": "暂无快照",
+  "version.create": "创建快照",
+  "version.restore": "回滚",
+  "version.manual": "手动快照",
+  "version.selectHint": "选择版本查看差异",
+  "version.restoreConfirm": "确定回滚到该版本？当前内容将被覆盖。",
+  "landmark.title": "写作地标",
+  "landmark.empty": "暂无地标",
+  "landmark.insert": "插入地标",
+  "landmark.prompt": "地标说明",
+  "landmark.created": "地标已插入",
+  "landmark.chapterOnly": "请在章节中插入地标",
+  "wordfreq.hint": "当前范围词频 Top 100",
+  "wordfreq.aiNaming": "AI 命名建议"
 }