Add avatar_url column to users table and create migration scripts for adding and removing it

b0esche_cloud/lib/widgets/account_settings_dialog.dart

@@ -620,12 +620,10 @@ class _AccountSettingsDialogState extends State<AccountSettingsDialog> {
               ),
               const SizedBox(height: 24),
 
-              // Save Button
-              Center(
                 child: SizedBox(
                   width: 144,
                   child: ModernGlassButton(
-                    onPressed: _isLoading ? () {} : _updateProfile,
+                    onPressed: _isLoading ? null : _updateProfile,
                     isLoading: _isLoading,
                     child: _isLoading
                         ? const SizedBox(
@@ -641,7 +639,6 @@ class _AccountSettingsDialogState extends State<AccountSettingsDialog> {
                         : const Text('Save Changes'),
                   ),
                 ),
-              ),
               const SizedBox(height: 2), // Space for logout button
             ],
           ),

go_cloud/migrations/0010_add_avatar_url.sql

@@ -0,0 +1 @@
+ALTER TABLE users ADD COLUMN avatar_url TEXT;

go_cloud/migrations/0010_add_avatar_url_down.sql

@@ -0,0 +1 @@
+ALTER TABLE users DROP COLUMN avatar_url;