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/hooks/index.ts

@@ -2,33 +2,23 @@
  * Hooks 导出
  */
 
-// ==================== 新的响应式 Hooks (推荐) ====================
+// ==================== 响应式 Hooks ====================
 export {
-  // 核心 hooks
   useBreakpoint,
-  useFineBreakpoint,
   useBreakpointGTE,
-  useBreakpointLT,
-  useBreakpointBetween,
   useScreenSize,
   useWindowDimensions,
   useOrientation,
   usePlatform,
-  useMediaQuery,
   useResponsiveValue,
-  useResponsiveStyle,
   useColumnCount,
   useResponsiveSpacing,
-  // 兼容层
   useResponsive,
-  useLegacyResponsive,
-  // 工具函数
   getBreakpoint,
   getFineBreakpoint,
   isBreakpointGTE,
   isBreakpointLT,
   isBreakpointBetween,
-  // 常量
   BREAKPOINTS,
   FINE_BREAKPOINTS,
 } from '../presentation/hooks/responsive';
@@ -42,25 +32,9 @@ export type {
   PlatformInfo,
   ScreenSize,
   MediaQueryOptions,
-  // 兼容层类型
   ResponsiveInfo,
 } from '../presentation/hooks/responsive';
 
-// ==================== 旧版响应式 Hooks (保持向后兼容) ====================
-// 注意：这些导出将在未来版本中移除，请使用新的 hooks
-export {
-  BREAKPOINTS as BREAKPOINTS_OLD,
-  FINE_BREAKPOINTS as FINE_BREAKPOINTS_OLD,
-} from './useResponsive';
-
-export type {
-  ResponsiveInfo as ResponsiveInfo_OLD,
-  BreakpointKey as BreakpointKey_OLD,
-  BreakpointValue as BreakpointValue_OLD,
-  FineBreakpointKey as FineBreakpointKey_OLD,
-  ResponsiveValue as ResponsiveValue_OLD,
-} from './useResponsive';
-
 // ==================== 其他 Hooks ====================
 export {
   usePrefetch,
@@ -123,4 +97,4 @@ export type {
   KeyboardEventType,
   PlatformKeyboardOptions,
   PlatformKeyboardResult,
-} from './usePlatformKeyboard';
+} from './usePlatformKeyboard';