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-TW/tools.json

@@ -288,7 +288,47 @@
   },
   "comparePdfs": {
     "name": "比較 PDF",
-    "subtitle": "並排比較兩個 PDF。"
+    "subtitle": "並排比較兩個 PDF。",
+    "firstPdf": "第一個 PDF",
+    "secondPdf": "第二個 PDF",
+    "clickOrDrop": "點擊或拖放",
+    "page": "頁面",
+    "overlay": "疊加",
+    "sideBySide": "並排",
+    "flicker": "閃爍",
+    "syncScroll": "同步捲動",
+    "export": "匯出",
+    "exportAsPdf": "匯出為 PDF",
+    "splitView": "分割檢視",
+    "alternating": "交替",
+    "leftDocument": "左側文件",
+    "rightDocument": "右側文件",
+    "original": "原始",
+    "modified": "修改後",
+    "searchChanges": "搜尋變更...",
+    "deleted": "已刪除",
+    "added": "已新增",
+    "prevPage": "上一頁",
+    "nextPage": "下一頁",
+    "prevChange": "上一個變更",
+    "nextChange": "下一個變更",
+    "uploadTwoPdfs": "上傳兩個 PDF 以查看差異。",
+    "noDifferences": "此頁面未偵測到差異。",
+    "noMatchingChanges": "沒有符合目前篩選條件的變更。",
+    "pageNotExist": "此 PDF 中不存在第 {{page}} 頁。",
+    "noPairedPage": "此側沒有配對頁面。",
+    "buildingModel": "正在建立頁面配對模型...",
+    "indexingPdf": "正在索引 PDF {{num}}，第 {{page}} / {{total}} 頁...",
+    "loadingComparison": "正在載入比較 {{current}} / {{total}}...",
+    "runningOcr": "正在對第 {{page}} 頁執行 OCR...",
+    "preparingExport": "正在準備 PDF 匯出...",
+    "renderingPage": "正在轉譯第 {{current}} / {{total}} 頁...",
+    "exportError": "匯出錯誤",
+    "exportFailed": "無法匯出比較 PDF。",
+    "loadingFile": "正在載入 {{name}}...",
+    "invalidFile": "無效檔案",
+    "invalidFileMsg": "請選擇有效的 PDF 檔案。",
+    "loadError": "無法載入 PDF。檔案可能已損毀或受密碼保護。"
   },
   "posterizePdf": {
     "name": "海報化 PDF",