Update macOS download link and bump version to 4.7.56

- Update macOS download URL to v0.1.0 DMG file
- Bump version from 4.7.55 to 4.7.56 across all files
- Rebuild project with updated version

src/app.jsx

@@ -1924,7 +1924,7 @@
                             }
                         }
         
-                        handleMessage(' SecureBit.chat Enhanced Security Edition v4.7.55 - ECDH + DTLS + SAS initialized. Ready to establish a secure connection with ECDH key exchange, DTLS fingerprint verification, and SAS authentication to prevent MITM attacks.', 'system');
+                        handleMessage(' SecureBit.chat Enhanced Security Edition v4.7.56 - ECDH + DTLS + SAS initialized. Ready to establish a secure connection with ECDH key exchange, DTLS fingerprint verification, and SAS authentication to prevent MITM attacks.', 'system');
         
                         const handleBeforeUnload = (event) => {
                             if (event.type === 'beforeunload' && !isTabSwitching) {

src/components/ui/DownloadApps.jsx

@@ -2,7 +2,7 @@ const DownloadApps = () => {
     const apps = [
         { id: 'web', name: 'Web App', subtitle: 'Browser Version', icon: 'fas fa-globe', platform: 'Web', isActive: true, url: 'https://securebit.chat/', color: 'green' },
         { id: 'windows', name: 'Windows', subtitle: 'Desktop App', icon: 'fab fa-windows', platform: 'Desktop', isActive: true, url: 'https://github.com/SecureBitChat/securebit-desktop/releases/latest/download/SecureBit.Chat_0.1.0_x64-setup.exe', color: 'blue' },
-        { id: 'macos', name: 'macOS', subtitle: 'Desktop App', icon: 'fab fa-safari', platform: 'Desktop', isActive: true, url: 'https://github.com/SecureBitChat/securebit-desktop/releases/latest/download/SecureBitChat.zip', color: 'gray' },
+        { id: 'macos', name: 'macOS', subtitle: 'Desktop App', icon: 'fab fa-safari', platform: 'Desktop', isActive: true, url: 'https://github.com/SecureBitChat/securebit-desktop/releases/download/v0.1.0/SecureBit.Chat_0.1.0_x64.dmg', color: 'gray' },
         { id: 'linux', name: 'Linux', subtitle: 'Desktop App', icon: 'fab fa-linux', platform: 'Desktop', isActive: true, url: 'https://github.com/SecureBitChat/securebit-desktop/releases/latest/download/SecureBit.Chat_0.1.0_amd64.AppImage', color: 'orange' },
         { id: 'ios', name: 'iOS', subtitle: 'iPhone & iPad', icon: 'fab fa-apple', platform: 'Mobile', isActive: false, url: 'https://apps.apple.com/app/securebit-chat/', color: 'white' },
         { id: 'android', name: 'Android', subtitle: 'Google Play', icon: 'fab fa-android', platform: 'Mobile', isActive: false, url: 'https://play.google.com/store/apps/details?id=com.securebit.chat', color: 'green' },

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 v4.7.55')
+                        }, 'End-to-end freedom v4.7.56')
                     ])
                 ]),