feat: implement comprehensive PWA force update system

- Add UpdateManager and UpdateChecker for automatic version detection
- Add post-build script for meta.json generation and version injection
- Enhance Service Worker with version-aware caching
- Add .htaccess configuration for proper cache control

This ensures all users receive the latest version after deployment
without manual cache clearing.

src/components/ui/Header.jsx

@@ -539,7 +539,7 @@ const EnhancedMinimalHeader = ({
                         React.createElement('p', {
                             key: 'subtitle',
                             className: 'text-xs sm:text-sm text-muted hidden sm:block'
-                        }, 'End-to-end freedom v4.7.53')
+                        }, 'End-to-end freedom v4.7.55')
                     ])
                 ]),