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/animated_wave_background.dart

@@ -38,7 +38,7 @@ class AnimatedWaveBackground extends StatelessWidget {
                   width: 200,
                   height: 200,
                   decoration: BoxDecoration(
-                    color: Colors.white.withOpacity(0.1),
+                    color: Colors.white.withValues(alpha: 0.1),
                     borderRadius: BorderRadius.circular(100),
                   ),
                 ),
@@ -64,7 +64,7 @@ class AnimatedWaveBackground extends StatelessWidget {
                   width: 220,
                   height: 220,
                   decoration: BoxDecoration(
-                    color: Colors.white.withOpacity(0.05),
+                    color: Colors.white.withValues(alpha: 0.05),
                     borderRadius: BorderRadius.circular(110),
                   ),
                 ),
@@ -90,7 +90,7 @@ class AnimatedWaveBackground extends StatelessWidget {
                   width: 120,
                   height: 120,
                   decoration: BoxDecoration(
-                    color: Colors.white.withOpacity(0.08),
+                    color: Colors.white.withValues(alpha: 0.08),
                     borderRadius: BorderRadius.circular(60),
                   ),
                 ),
@@ -109,7 +109,7 @@ class AnimatedWaveBackground extends StatelessWidget {
                 width: 30,
                 height: 30,
                 decoration: BoxDecoration(
-                  color: Colors.white.withOpacity(
+                  color: Colors.white.withValues(alpha: 
                     0.1 + 0.1 * pulseController.value,
                   ),
                   borderRadius: BorderRadius.circular(15),