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/screens/message/components/ChatScreen/useChatScreen.ts

@@ -18,8 +18,7 @@ import {
   Alert,
 } from 'react-native';
 import { useLocalSearchParams, router } from 'expo-router';
-import { formatDistanceToNow } from 'date-fns';
-import { zhCN } from 'date-fns/locale';
+import { formatChatTime } from '@/utils/formatTime';
 import * as ImagePicker from 'expo-image-picker';
 import { GroupMemberResponse, MessageSegment, TextSegmentData, ImageSegmentData, AtSegmentData, ReplySegmentData, MessageStatus } from '../../../../types/dto';
 import { messageService } from '@/services/message';
@@ -707,24 +706,7 @@ export const useChatScreen = (props?: ChatScreenProps) => {
 
   // 格式化时间
   const formatTime = useCallback((dateString: string): string => {
-    if (!dateString) return '';
-    try {
-      const date = new Date(dateString);
-      if (Number.isNaN(date.getTime())) return '';
-      const now = new Date();
-      const diffInHours = (now.getTime() - date.getTime()) / (1000 * 60 * 60);
-
-      if (diffInHours < 24 && date.getDate() === now.getDate()) {
-        return date.toLocaleTimeString('zh-CN', { hour: '2-digit', minute: '2-digit' });
-      }
-
-      return formatDistanceToNow(date, {
-        addSuffix: true,
-        locale: zhCN,
-      });
-    } catch {
-      return '';
-    }
+    return formatChatTime(dateString);
   }, []);
 
   // 检查是否需要显示时间分隔