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/widgets/analysis/analysis_screen_spacer.dart

@@ -0,0 +1,19 @@
+import 'package:flutter/material.dart';
+
+/// 분석 화면에서 사용하는 간격 위젯
+/// SliverToBoxAdapter 오류를 해결하기 위해 별도 컴포넌트로 분리
+class AnalysisScreenSpacer extends StatelessWidget {
+  final double height;
+  
+  const AnalysisScreenSpacer({
+    super.key,
+    this.height = 24,
+  });
+
+  @override
+  Widget build(BuildContext context) {
+    return SliverToBoxAdapter(
+      child: SizedBox(height: height),
+    );
+  }
+}