refactor: restructure core architecture and responsive system

This commit implements a major architectural refactor to improve modularity, type safety, and maintainability across the codebase.

Key changes include:
- **Responsive System Refactor**: Migrated from a monolithic `useResponsive` hook to a set of specialized, granular hooks (`useBreakpoint`, `useOrientation`, `usePlatform`, etc.) located in `src/presentation/hooks/responsive`. This reduces unnecessary re-renders and improves developer experience.
- **Core Service Restructuring**: Introduced a new directory structure for services, including dedicated folders for `datasources`, `mappers`, and domain-specific types (`message`, `post`).
- **Data Layer Improvements**:
    - Centralized JSON parsing logic in `src/database/core/jsonUtils.ts`.
    - Cleaned up repository implementations by removing redundant local utility functions.
    - Refactored `MessageMapper` to use the new centralized JSON utility.
- **Type System Cleanup**:
    - Decomposed the large `src/types/dto.ts` into a modular `src/types/dto/` directory.
    - Simplified `src/types/index.ts` and introduced backward-compatible aliases for core entities.
- **Utility Consolidation**:
    - Created a centralized `src/utils/formatTime.ts` to replace fragmented date formatting logic across various screens and components.
    - Removed deprecated responsive utility files in favor of the new hook-based system.
- **Service Logic Refinement**: Refactored `ApiClient` and `WebSocketService` to use a centralized `showVerificationModal` service, removing duplicated state management for verification prompts.

src/services/post/types/repository.ts

@@ -0,0 +1,190 @@
+/**
+ * 帖子 Repository 接口
+ * 定义帖子数据访问的抽象
+ */
+
+import type { Post, PostImage, PostStatus } from '../../../core/entities/Post';
+
+// ==================== 请求/响应类型 ====================
+
+/**
+ * 获取帖子列表参数
+ */
+export interface GetPostsParams {
+  /** 分页 - 页码（从1开始） */
+  page?: number;
+  /** 分页 - 每页数量 */
+  pageSize?: number;
+  /** 游标 - 用于无限滚动加载 */
+  cursor?: string;
+  /** 帖子类型筛选（可选）：follow, hot, latest */
+  post_type?: 'follow' | 'hot' | 'latest';
+  /** 频道ID过滤 */
+  channelId?: string;
+  /** 作者ID过滤 */
+  authorId?: string;
+  /** 标签过滤 */
+  tags?: string[];
+  /** 状态过滤 */
+  status?: PostStatus;
+  /** 排序字段 */
+  sortBy?: 'createdAt' | 'likesCount' | 'commentsCount' | 'viewsCount';
+  /** 排序方向 */
+  sortOrder?: 'asc' | 'desc';
+  /** 是否只获取置顶帖子 */
+  pinnedOnly?: boolean;
+}
+
+/**
+ * 创建帖子数据
+ */
+export interface CreatePostData {
+  /** 帖子标题 */
+  title: string;
+  /** 帖子内容 */
+  content: string;
+  /** 图片列表 */
+  images?: PostImage[];
+  /** 所属频道ID */
+  channelId?: string;
+  /** 标签列表 */
+  tags?: string[];
+  /** 帖子状态 */
+  status?: PostStatus;
+}
+
+/**
+ * 更新帖子数据
+ */
+export interface UpdatePostData {
+  /** 帖子标题 */
+  title?: string;
+  /** 帖子内容 */
+  content?: string;
+  /** 图片列表 */
+  images?: PostImage[];
+  /** 标签列表 */
+  tags?: string[];
+  /** 帖子状态 */
+  status?: PostStatus;
+  /** 是否置顶 */
+  isPinned?: boolean;
+}
+
+/**
+ * 帖子列表结果
+ */
+export interface PostsResult {
+  /** 帖子列表 */
+  posts: Post[];
+  /** 是否有更多数据 */
+  hasMore: boolean;
+  /** 下一页游标 */
+  nextCursor?: string;
+  /** 总数（如果支持） */
+  total?: number;
+}
+
+/**
+ * 搜索帖子参数
+ */
+export interface SearchPostsParams {
+  /** 搜索关键词 */
+  keyword: string;
+  /** 分页 - 页码 */
+  page?: number;
+  /** 分页 - 每页数量 */
+  pageSize?: number;
+  /** 搜索范围：标题、内容、或全部 */
+  scope?: 'title' | 'content' | 'all';
+  /** 频道ID过滤 */
+  channelId?: string;
+}
+
+// ==================== Repository 接口 ====================
+
+export interface IPostRepository {
+  // ==================== 帖子查询 ====================
+
+  /**
+   * 获取帖子列表
+   * @param params 查询参数
+   * @returns 帖子列表结果
+   */
+  getPosts(params?: GetPostsParams): Promise<PostsResult>;
+
+  /**
+   * 获取单个帖子详情
+   * @param id 帖子ID
+   * @returns 帖子实体，不存在则返回null
+   */
+  getPostById(id: string): Promise<Post | null>;
+
+  /**
+   * 获取用户发布的帖子列表
+   * @param userId 用户ID
+   * @param params 查询参数
+   * @returns 帖子列表结果
+   */
+  getPostsByUser(userId: string, params?: GetPostsParams): Promise<PostsResult>;
+
+  /**
+   * 搜索帖子
+   * @param params 搜索参数
+   * @returns 帖子列表结果
+   */
+  searchPosts(params: SearchPostsParams): Promise<PostsResult>;
+
+  // ==================== 帖子操作 ====================
+
+  /**
+   * 创建帖子
+   * @param data 创建帖子数据
+   * @returns 创建的帖子实体
+   */
+  createPost(data: CreatePostData): Promise<Post>;
+
+  /**
+   * 更新帖子
+   * @param id 帖子ID
+   * @param data 更新数据
+   * @returns 更新后的帖子实体
+   */
+  updatePost(id: string, data: UpdatePostData): Promise<Post>;
+
+  /**
+   * 删除帖子
+   * @param id 帖子ID
+   */
+  deletePost(id: string): Promise<void>;
+
+  // ==================== 互动操作 ====================
+
+  /**
+   * 点赞帖子
+   * @param id 帖子ID
+   * @returns 更新后的帖子实体
+   */
+  likePost(id: string): Promise<Post>;
+
+  /**
+   * 取消点赞
+   * @param id 帖子ID
+   * @returns 更新后的帖子实体
+   */
+  unlikePost(id: string): Promise<Post>;
+
+  /**
+   * 收藏帖子
+   * @param id 帖子ID
+   * @returns 更新后的帖子实体
+   */
+  favoritePost(id: string): Promise<Post>;
+
+  /**
+   * 取消收藏
+   * @param id 帖子ID
+   * @returns 更新后的帖子实体
+   */
+  unfavoritePost(id: string): Promise<Post>;
+}