Refactor Dockerfile and Vite configuration to remove VITE_APP_VERSION and streamline build process

- Removed VITE_APP_VERSION from Dockerfile and GitHub workflows.
- Simplified Vite configuration by eliminating the Git version retrieval function and global constant for app version.
- Updated ColorPicker and other components to enhance accessibility with aria-labels.
- Introduced unique identifiers for buttons in the AppEditorModal for better React key management.
- Improved error handling in the Login component to provide user-friendly messages without exposing sensitive data.

src/components/ConnectionModal.tsx

@@ -286,7 +286,7 @@ export default function ConnectionModal({ onClose }: ConnectionModalProps) {
               <h2 className="text-lg font-semibold text-dark-100">
                 {t('subscription.connection.title')}
               </h2>
-              <button onClick={onClose} className="btn-icon">
+              <button onClick={onClose} className="btn-icon" aria-label="Close">
                 <svg className="w-5 h-5" fill="none" viewBox="0 0 24 24" stroke="currentColor" strokeWidth={1.5}>
                   <path strokeLinecap="round" strokeLinejoin="round" d="M6 18L18 6M6 6l12 12" />
                 </svg>