Major UI/UX and architecture improvements

- Implemented new navigation system with NavigationProvider and route management
- Added adaptive theme system with ThemeProvider for better theme handling
- Introduced glassmorphism design elements (app bars, scaffolds, cards)
- Added advanced animations (spring animations, page transitions, staggered lists)
- Implemented performance optimizations (memory manager, lazy loading)
- Refactored Analysis screen into modular components
- Added floating navigation bar with haptic feedback
- Improved subscription cards with swipe actions
- Enhanced skeleton loading with better animations
- Added cached network image support
- Improved overall app architecture and code organization

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

lib/utils/haptic_feedback_helper.dart

@@ -0,0 +1,74 @@
+import 'package:flutter/services.dart';
+import 'dart:io' show Platform;
+
+/// 햅틱 피드백을 관리하는 헬퍼 클래스
+class HapticFeedbackHelper {
+  static bool _isEnabled = true;
+  
+  /// 햅틱 피드백 활성화 여부 설정
+  static void setEnabled(bool enabled) {
+    _isEnabled = enabled;
+  }
+  
+  /// 가벼운 햅틱 피드백
+  static Future<void> lightImpact() async {
+    if (!_isEnabled || !_isPlatformSupported()) return;
+    await HapticFeedback.lightImpact();
+  }
+  
+  /// 중간 강도 햅틱 피드백
+  static Future<void> mediumImpact() async {
+    if (!_isEnabled || !_isPlatformSupported()) return;
+    await HapticFeedback.mediumImpact();
+  }
+  
+  /// 강한 햅틱 피드백
+  static Future<void> heavyImpact() async {
+    if (!_isEnabled || !_isPlatformSupported()) return;
+    await HapticFeedback.heavyImpact();
+  }
+  
+  /// 선택 햅틱 피드백 (iOS의 경우 Taptic Engine)
+  static Future<void> selectionClick() async {
+    if (!_isEnabled || !_isPlatformSupported()) return;
+    await HapticFeedback.selectionClick();
+  }
+  
+  /// 진동 패턴 (Android)
+  static Future<void> vibrate({int duration = 50}) async {
+    if (!_isEnabled || !_isPlatformSupported()) return;
+    await HapticFeedback.vibrate();
+  }
+  
+  /// 성공 피드백 패턴
+  static Future<void> success() async {
+    if (!_isEnabled || !_isPlatformSupported()) return;
+    await HapticFeedback.mediumImpact();
+    await Future.delayed(const Duration(milliseconds: 100));
+    await HapticFeedback.lightImpact();
+  }
+  
+  /// 에러 피드백 패턴
+  static Future<void> error() async {
+    if (!_isEnabled || !_isPlatformSupported()) return;
+    await HapticFeedback.heavyImpact();
+    await Future.delayed(const Duration(milliseconds: 100));
+    await HapticFeedback.heavyImpact();
+  }
+  
+  /// 경고 피드백 패턴
+  static Future<void> warning() async {
+    if (!_isEnabled || !_isPlatformSupported()) return;
+    await HapticFeedback.mediumImpact();
+  }
+  
+  /// 플랫폼이 햅틱 피드백을 지원하는지 확인
+  static bool _isPlatformSupported() {
+    try {
+      return Platform.isIOS || Platform.isAndroid;
+    } catch (e) {
+      // 웹이나 데스크톱에서는 Platform을 사용할 수 없음
+      return false;
+    }
+  }
+}