✨ feat: Add console announcements and FAQ management system

- Add SettingsAnnouncements component with full CRUD operations for system announcements
  * Support multiple announcement types (default, ongoing, success, warning, error)
  * Include publish date, content, type classification and additional notes
  * Implement batch operations and pagination for better data management
  * Add real-time preview with relative time display and date formatting

- Add SettingsFAQ component for comprehensive FAQ management
  * Support question-answer pairs with rich text content
  * Include full editing, deletion and creation capabilities
  * Implement batch delete operations and paginated display
  * Add validation for complete Q&A information

- Integrate announcement and FAQ modules into DashboardSetting
  * Add unified configuration interface in admin console
  * Implement auto-refresh functionality for real-time updates
  * Add loading states and error handling for better UX

- Enhance backend API support in controller and setting modules
  * Add validation functions for console settings
  * Include time and sorting utilities for announcement management
  * Extend API endpoints for announcement and FAQ data persistence

- Improve frontend infrastructure
  * Add new translation keys for internationalization support
  * Update utility functions for date/time formatting
  * Enhance CSS styles for better component presentation
  * Add icons and visual improvements for announcements and FAQ sections

This implementation provides administrators with comprehensive tools to manage
system-wide announcements and user FAQ content through an intuitive console interface.

web/src/i18n/locales/en.json

@@ -510,7 +510,7 @@
   "此项可选，输入镜像站地址，格式为：": "This is optional, enter the mirror site address, the format is:",
   "模型映射": "Model mapping",
   "请输入默认 API 版本，例如：2023-03-15-preview，该配置可以被实际的请求查询参数所覆盖": "Please enter the default API version, for example: 2023-03-15-preview, this configuration can be overridden by the actual request query parameters",
-  "默认": "default",
+  "默认": "Default",
   "图片演示": "Image demo",
   "注意，系统请求的时模型名称中的点会被剔除，例如：gpt-4.1会请求为gpt-41，所以在Azure部署的时候，部署模型名称需要手动改为gpt-41": "Note that the dot in the model name requested by the system will be removed, for example: gpt-4.1 will be requested as gpt-41, so when deploying on Azure, the deployment model name needs to be manually changed to gpt-41",
   "2025年5月10日后添加的渠道，不需要再在部署的时候移除模型名称中的\".\"": "After May 10, 2025, channels added do not need to remove the dot in the model name during deployment",
@@ -882,7 +882,7 @@
   "线路监控": "line monitoring",
   "查看全部": "View all",
   "高延迟": "high latency",
-  "异常": "abnormal",
+  "异常": "Abnormal",
   "的未命名令牌": "unnamed token",
   "令牌更新成功！": "Token updated successfully!",
   "(origin) Discord原链接": "(origin) Discord original link",
@@ -1584,14 +1584,13 @@
   "模型数据分析": "Model Data Analysis",
   "搜索无结果": "No results found",
   "仪表盘配置": "Dashboard Configuration",
-  "API信息管理，可以配置多个API地址用于状态展示和负载均衡": "API information management, you can configure multiple API addresses for status display and load balancing",
+  "API信息管理，可以配置多个API地址用于状态展示和负载均衡（最多50个）": "API information management, you can configure multiple API addresses for status display and load balancing (maximum 50)",
   "线路描述": "Route description",
   "颜色": "Color",
   "标识颜色": "Identifier color",
   "添加API": "Add API",
   "保存配置": "Save Configuration",
   "API信息": "API Information",
-  "暂无API信息配置": "No API information configured",
   "暂无API信息": "No API information",
   "请输入API地址": "Please enter the API address",
   "请输入线路描述": "Please enter the route description",
@@ -1599,6 +1598,36 @@
   "请输入说明": "Please enter the description",
   "如：香港线路": "e.g. Hong Kong line",
   "请联系管理员在系统设置中配置API信息": "Please contact the administrator to configure API information in the system settings.",
+  "请联系管理员在系统设置中配置公告信息": "Please contact the administrator to configure notice information in the system settings.",
+  "请联系管理员在系统设置中配置常见问答": "Please contact the administrator to configure FAQ information in the system settings.",
   "确定要删除此API信息吗？": "Are you sure you want to delete this API information?",
-  "测速": "Speed Test"
+  "测速": "Speed Test",
+  "批量删除": "Batch Delete",
+  "常见问答": "FAQ",
+  "进行中": "Ongoing",
+  "警告": "Warning",
+  "添加公告": "Add Notice",
+  "编辑公告": "Edit Notice",
+  "公告内容": "Notice Content",
+  "请输入公告内容": "Please enter the notice content",
+  "发布日期": "Publish Date",
+  "请选择发布日期": "Please select the publish date",
+  "发布时间": "Publish Time",
+  "公告类型": "Notice Type",
+  "说明信息": "Description",
+  "可选，公告的补充说明": "Optional, additional information for the notice",
+  "确定要删除此公告吗？": "Are you sure you want to delete this notice?",
+  "系统公告管理，可以发布系统通知和重要消息": "System notice management, you can publish system notices and important messages",
+  "暂无系统公告": "No system notice",
+  "添加问答": "Add FAQ",
+  "编辑问答": "Edit FAQ",
+  "问题标题": "Question Title",
+  "请输入问题标题": "Please enter the question title",
+  "回答内容": "Answer Content",
+  "请输入回答内容": "Please enter the answer content",
+  "确定要删除此问答吗？": "Are you sure you want to delete this FAQ?",
+  "系统公告管理，可以发布系统通知和重要消息（最多100个，前端显示最新20条）": "System notice management, you can publish system notices and important messages (maximum 100, display latest 20 on the front end)",
+  "常见问答管理，为用户提供常见问题的答案（最多50个，前端显示最新20条）": "FAQ management, providing answers to common questions for users (maximum 50, display latest 20 on the front end)",
+  "暂无常见问答": "No FAQ",
+  "显示最新20条": "Display latest 20"
 }