feat: enhance PDF comparison with new change types and zoom functionality

- Added support for 'moved' and 'style-changed' change types in PDF comparison.
- Implemented category filters for changes, allowing users to filter by text, images, headers, annotations, formatting, and background.
- Introduced zoom functionality with buttons for zooming in, out, and resetting to default.
- Updated UI to reflect new change types and categories, including visual indicators for moved and style-changed items.
- Enhanced summary display to include counts for moved and style-changed changes.
- Refactored rendering logic to accommodate zoom levels and improve performance.
- Added tests for new change detection features and category assignments.

public/locales/zh/tools.json

@@ -292,7 +292,47 @@
   },
   "comparePdfs": {
     "name": "比较 PDF",
-    "subtitle": "并排比较两个 PDF。"
+    "subtitle": "并排比较两个 PDF。",
+    "firstPdf": "第一个 PDF",
+    "secondPdf": "第二个 PDF",
+    "clickOrDrop": "点击或拖放",
+    "page": "页面",
+    "overlay": "叠加",
+    "sideBySide": "并排",
+    "flicker": "闪烁",
+    "syncScroll": "同步滚动",
+    "export": "导出",
+    "exportAsPdf": "导出为 PDF",
+    "splitView": "分屏视图",
+    "alternating": "交替",
+    "leftDocument": "左侧文档",
+    "rightDocument": "右侧文档",
+    "original": "原始",
+    "modified": "修改后",
+    "searchChanges": "搜索更改...",
+    "deleted": "已删除",
+    "added": "已添加",
+    "prevPage": "上一页",
+    "nextPage": "下一页",
+    "prevChange": "上一处更改",
+    "nextChange": "下一处更改",
+    "uploadTwoPdfs": "上传两个 PDF 以查看差异。",
+    "noDifferences": "此页面未检测到差异。",
+    "noMatchingChanges": "没有与当前筛选条件匹配的更改。",
+    "pageNotExist": "此 PDF 中不存在第 {{page}} 页。",
+    "noPairedPage": "此侧没有配对页面。",
+    "buildingModel": "正在构建页面配对模型...",
+    "indexingPdf": "正在索引 PDF {{num}}，第 {{page}} / {{total}} 页...",
+    "loadingComparison": "正在加载比较 {{current}} / {{total}}...",
+    "runningOcr": "正在对第 {{page}} 页运行 OCR...",
+    "preparingExport": "正在准备 PDF 导出...",
+    "renderingPage": "正在渲染第 {{current}} / {{total}} 页...",
+    "exportError": "导出错误",
+    "exportFailed": "无法导出比较 PDF。",
+    "loadingFile": "正在加载 {{name}}...",
+    "invalidFile": "无效文件",
+    "invalidFileMsg": "请选择有效的 PDF 文件。",
+    "loadError": "无法加载 PDF。文件可能已损坏或受密码保护。"
   },
   "posterizePdf": {
     "name": "海报化 PDF",