refactor: 完全重构为 Anki 兼容数据结构

- 用 Deck 替换 Folder
- 用 Note + Card 替换 Pair (双向复习)
- 添加 NoteType (卡片模板)
- 添加 Revlog (复习历史)
- 实现 SM-2 间隔重复算法
- 更新所有前端页面
- 添加数据库迁移

messages/zh-CN.json

@@ -169,22 +169,46 @@
     "resetPasswordSuccessHint": "您的密码已成功重置，现在可以使用新密码登录了。"
   },
   "memorize": {
-    "folder_selector": {
-      "selectFolder": "选择文件夹",
-      "noFolders": "未找到文件夹",
-      "folderInfo": "{id}. {name} ({count})"
+    "deck_selector": {
+      "selectDeck": "选择牌组",
+      "noDecks": "未找到牌组",
+      "goToDecks": "前往牌组",
+      "noCards": "无卡片",
+      "new": "新卡片",
+      "learning": "学习中",
+      "review": "复习",
+      "due": "待复习"
     },
-    "memorize": {
-      "answer": "答案",
-      "next": "下一个",
-      "reverse": "反向",
-      "dictation": "听写",
-      "noTextPairs": "没有可用的文本对",
-      "disorder": "乱序",
-      "previous": "上一个"
+    "review": {
+      "loading": "加载中...",
+      "backToDecks": "返回牌组",
+      "allDone": "全部完成！",
+      "allDoneDesc": "您已完成所有待复习卡片。",
+      "reviewedCount": "已复习 {count} 张卡片",
+      "progress": "{current} / {total}",
+      "nextReview": "下次复习",
+      "interval": "间隔",
+      "ease": "难度系数",
+      "lapses": "遗忘次数",
+      "showAnswer": "显示答案",
+      "again": "重来",
+      "hard": "困难",
+      "good": "良好",
+      "easy": "简单",
+      "now": "现在",
+      "lessThanMinute": "<1 分钟",
+      "inMinutes": "{count} 分钟",
+      "inHours": "{count} 小时",
+      "inDays": "{count} 天",
+      "inMonths": "{count} 个月",
+      "minutes": "<1 分钟",
+      "days": "{count} 天",
+      "months": "{count} 个月",
+      "minAbbr": "分",
+      "dayAbbr": "天"
     },
     "page": {
-      "unauthorized": "您无权访问该文件夹"
+      "unauthorized": "您无权访问该牌组"
     }
   },
   "navbar": {
@@ -200,31 +224,45 @@
   "ocr": {
     "title": "OCR 词汇提取",
     "description": "上传教材词汇表截图，提取单词-释义对",
+    "uploadSection": "上传图片",
     "uploadImage": "上传图片",
     "dragDropHint": "拖放图片到此处，或点击选择",
+    "dropOrClick": "拖放图片到此处，或点击选择",
+    "changeImage": "点击更换图片",
     "supportedFormats": "支持格式：JPG、PNG、WebP",
-    "selectFolder": "选择文件夹",
-    "chooseFolder": "选择保存提取词汇的文件夹",
-    "noFolders": "暂无文件夹，请先创建文件夹",
+    "deckSelection": "选择牌组",
+    "selectDeck": "选择牌组",
+    "chooseDeck": "选择保存提取词汇的牌组",
+    "noDecks": "暂无牌组，请先创建牌组",
     "languageHints": "语言提示（可选）",
     "sourceLanguageHint": "源语言（如：英语）",
     "targetLanguageHint": "目标/翻译语言（如：中文）",
+    "sourceLanguagePlaceholder": "源语言（如：英语）",
+    "targetLanguagePlaceholder": "目标/翻译语言（如：中文）",
     "process": "处理图片",
+    "processButton": "处理图片",
     "processing": "处理中...",
     "preview": "预览",
-    "extractedPairs": "提取的词汇对",
+    "resultsPreview": "结果预览",
+    "extractedPairs": "已提取 {count} 个词汇对",
     "word": "单词",
     "definition": "释义",
-    "pairsCount": "已提取 {count} 个词汇对",
-    "savePairs": "保存到文件夹",
+    "pairsCount": "{count} 个词汇对",
+    "savePairs": "保存到牌组",
+    "saveButton": "保存",
     "saving": "保存中...",
-    "saved": "成功将 {count} 个词汇对保存到 {folder}",
+    "saved": "成功将 {count} 个词汇对保存到 {deck}",
+    "ocrSuccess": "成功将 {count} 个词汇对保存到 {deck}",
+    "savedToDeck": "已保存到 {deckName}",
     "saveFailed": "保存失败",
     "noImage": "请先上传图片",
-    "noFolder": "请选择文件夹",
+    "noDeck": "请选择牌组",
+    "noResultsToSave": "没有可保存的结果",
     "processingFailed": "OCR 处理失败",
     "tryAgain": "请尝试上传更清晰的图片",
-    "detectedLanguages": "检测到：{source} → {target}"
+    "detectedLanguages": "检测到：{source} → {target}",
+    "detectedSourceLanguage": "检测到的源语言",
+    "detectedTargetLanguage": "检测到的目标语言"
   },
   "profile": {
     "myProfile": "我的个人资料",
@@ -338,11 +376,11 @@
   },
   "explore": {
     "title": "探索",
-    "subtitle": "发现公开文件夹",
-    "searchPlaceholder": "搜索公开文件夹...",
+    "subtitle": "发现公开牌组",
+    "searchPlaceholder": "搜索公开牌组...",
     "loading": "加载中...",
-    "noFolders": "没有找到公开文件夹",
-    "folderInfo": "{userName} • {totalPairs} 个文本对",
+    "noDecks": "没有找到公开牌组",
+    "deckInfo": "{userName} • {cardCount} 张卡片",
     "unknownUser": "未知用户",
     "favorite": "收藏",
     "unfavorite": "取消收藏",
@@ -351,10 +389,10 @@
     "sortByFavoritesActive": "取消按收藏数排序"
   },
   "exploreDetail": {
-    "title": "文件夹详情",
+    "title": "牌组详情",
     "createdBy": "创建者：{name}",
     "unknownUser": "未知用户",
-    "totalPairs": "词对数量",
+    "totalCards": "卡片数量",
     "favorites": "收藏数",
     "createdAt": "创建时间",
     "viewContent": "查看内容",
@@ -385,11 +423,11 @@
     "memberSince": "注册时间",
     "joined": "加入于",
     "logout": "登出",
-    "folders": {
-      "title": "文件夹",
-      "noFolders": "还没有文件夹",
-      "folderName": "文件夹名称",
-      "totalPairs": "文本对数量",
+    "decks": {
+      "title": "牌组",
+      "noDecks": "还没有牌组",
+      "deckName": "牌组名称",
+      "totalCards": "卡片数量",
       "createdAt": "创建时间",
       "actions": "操作",
       "view": "查看"