feat: add "Add Page Labels" tool to the application

- Introduced a new tool for adding page labels to PDF documents, allowing users to apply Roman numerals, prefixes, and custom numbering ranges.
- Created a new HTML page for the tool with a user-friendly interface for file upload and label rule configuration.
- Implemented logic for handling file uploads, processing PDF files, and applying page labels based on user-defined rules.
- Added necessary types and utility functions for managing page label styles and normalization of start values.
- Updated main application configuration to include the new tool in the navigation.
- Added tests for page label utilities to ensure correct functionality.

public/locales/zh/tools.json

@@ -86,6 +86,65 @@
     "name": "页码",
     "subtitle": "将页码插入到您的文档中。"
   },
+  "addPageLabels": {
+    "name": "添加页面标签",
+    "subtitle": "使用罗马数字、前缀和自定义起始值应用 PDF 页面标签。",
+    "uploadHint": "PDF 文件",
+    "howLabelsWorkTitle": "页面标签的工作方式",
+    "howLabelsWorkStep1": "将页面范围留空即可为所有页面添加标签。",
+    "howLabelsWorkStep2": "前置页可使用罗马数字，正文部分可使用十进制编号等样式。",
+    "howLabelsWorkStep3": "将前缀与起始值 0 结合使用，可创建 A-0、A-1、A-2 之类的标签。",
+    "howLabelsWorkStep4": "当某条规则使用 1-9,30-40 或奇数页之类的不连续范围时，请启用连续编号。",
+    "labelRulesTitle": "标签规则",
+    "addRule": "添加规则",
+    "removeExistingLabels": "应用这些规则前先移除现有页面标签",
+    "cpdfNote": "此工具会在您的浏览器中使用 CoherentPDF。如果尚未配置 CoherentPDF，系统会提示您在 WASM 设置中完成配置。",
+    "processButton": "添加页面标签",
+    "howItWorksUploadTitle": "上传文件",
+    "howItWorksUploadDescription": "选择您想重新标记的 PDF 文件。",
+    "howItWorksDefineTitle": "定义规则",
+    "howItWorksDefineDescription": "设置一条或多条页面标签规则，包括页面范围、样式、前缀和起始值。",
+    "howItWorksDownloadTitle": "下载",
+    "howItWorksDownloadDescription": "保存带有新页面标签的更新后 PDF。",
+    "relatedToolsTitle": "相关 PDF 工具",
+    "faqWhatIsQuestion": "什么是页面标签？",
+    "faqWhatIsAnswer": "页面标签是 PDF 阅读器在缩略图、页面导航和打印对话框中显示的编号。它不会在页面上额外打印新文字。",
+    "faqMixQuestion": "我可以混用罗马数字和普通数字吗？",
+    "faqMixAnswer": "可以。您可以添加多条规则，例如 1-4 使用 LowercaseRoman，5-20 使用 DecimalArabic。",
+    "faqPrivacyQuestion": "我的文件会保持私密吗？",
+    "faqPrivacyAnswer": "会。处理过程在您的浏览器中使用 CoherentPDF WASM 完成，您的 PDF 不会离开您的设备。",
+    "invalidFileTitle": "无效文件",
+    "invalidFileMessage": "请上传有效的 PDF 文件。",
+    "loadingPdf": "正在加载 PDF...",
+    "protectedPdfTitle": "受保护的 PDF",
+    "protectedPdfMessage": "此 PDF 受密码保护。请先使用解密或更改权限工具。",
+    "loadErrorMessage": "无法加载 PDF 文件。该文件可能无效、损坏或受密码保护。",
+    "fileMeta": "{{size}} • {{count}} 页",
+    "ruleTitle": "标签规则 {{number}}",
+    "pageRangeLabel": "页面范围",
+    "pageRangePlaceholder": "所有页面，或例如 1-4、7、奇数页",
+    "labelStyleLabel": "标签样式",
+    "labelPrefixLabel": "标签前缀",
+    "labelPrefixPlaceholder": "可选前缀，例如 A-",
+    "startValueLabel": "起始值",
+    "continueNumbering": "在不连续范围中继续编号",
+    "examplesNote": "示例：1-4 用于罗马数字前言部分，15-20 使用前缀 A- 且起始值为 0，或者启用连续编号的奇数页。",
+    "uploadFirstMessage": "请先上传 PDF 文件。",
+    "applyingLabels": "正在应用页面标签...",
+    "invalidRangeMessage": "规则 {{number}} 的页面范围无效：{{range}}",
+    "allPages": "所有页面",
+    "emptyOutputMessage": "CoherentPDF 生成了一个空文件。",
+    "successMessage": "页面标签添加成功！",
+    "processErrorMessage": "无法添加页面标签。",
+    "styleOptions": {
+      "DecimalArabic": "十进制数字",
+      "LowercaseRoman": "小写罗马数字",
+      "UppercaseRoman": "大写罗马数字",
+      "LowercaseLetters": "小写字母",
+      "UppercaseLetters": "大写字母",
+      "NoLabelPrefixOnly": "仅前缀，无编号"
+    }
+  },
   "batesNumbering": {
     "name": "Bates编号",
     "subtitle": "在一个或多个PDF文件中添加连续的Bates编号。"