⚡️ feat: refactor sorting parameters in post listing API and components

- Renamed `orderedBy` to `orderBy` and `reverse` to `desc` in ListPostsParams interface and related functions.
- Updated all usages of the sorting parameters in the post listing logic to reflect the new naming convention.

feat: add user-related API functions

- Implemented `getLoginUser` and `getUserById` functions in the user API to fetch user details.
- Enhanced user model to include `language` property.

feat: integrate next-intl for internationalization

- Added `next-intl` plugin to Next.js configuration for improved localization support.
- Removed previous i18n implementation and replaced it with a new structure using JSON files for translations.
- Created locale files for English, Japanese, and Chinese with basic translations.
- Implemented a request configuration to handle user locales and messages dynamically.

fix: clean up unused imports and code

- Removed unused i18n utility functions and language settings from device context.
- Cleaned up commented-out code in blog card component and sidebar.

chore: update dependencies

- Added `deepmerge` for merging locale messages.
- Updated package.json and pnpm-lock.yaml to reflect new dependencies.

internal/model/comment.go

@@ -11,6 +11,7 @@ type Comment struct {
 	ReplyID      uint   `gorm:"index"`                           // 回复的评论ID
 	Content      string `gorm:"type:text"`                       // 评论内容
 	Depth        int    `gorm:"default:0"`                       // 评论的层级深度
+	IsPrivate    bool   `gorm:"default:false"`                   // 是否为私密评论，私密评论只有评论者和被评论对象所有者可见
 	LikeCount    uint64
 	CommentCount uint64
 }