feat(ui): scroll to reveal hidden modal elements in tests

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

tests/robot/ui/settings_modal.robot

@@ -91,6 +91,9 @@ Edit Logging Settings
 Edit Backup Settings
     [Documentation]    Toggle backup enabled and change path/retention.
     Open Settings Modal
+    # Backup section is below other sections - scroll to make it visible
+    Execute JavaScript    document.querySelector('#config-modal .modal-body').scrollTop = 10000
+    Wait For Elements State    id=backup-enabled    visible    timeout=5s
     Check Checkbox    id=backup-enabled
     Fill Text    id=backup-path    /tmp/aniworld_backups
     Fill Text    id=backup-keep-days    14
@@ -103,6 +106,9 @@ Edit Backup Settings
 Edit NFO Settings
     [Documentation]    Enter TMDB key and toggle auto-create/media downloads.
     Open Settings Modal
+    # NFO section is below other sections - scroll to make it visible
+    Execute JavaScript    document.querySelector('#config-modal .modal-body').scrollTop = 10000
+    Wait For Elements State    id=nfo-auto-create    visible    timeout=5s
     Fill Text    id=tmdb-api-key    test_tmdb_key_123
     Check Checkbox    id=nfo-auto-create
     Check Checkbox    id=nfo-download-poster
@@ -118,6 +124,9 @@ Edit NFO Settings
 Create Config Backup
     [Documentation]    Click create backup and verify success notification.
     Open Settings Modal
+    # Scroll to bottom to make the create-config-backup button visible
+    Execute JavaScript    document.querySelector('#config-modal .modal-body').scrollTop = 10000
+    Wait For Elements State    id=create-config-backup    visible    timeout=5s
     Click    id=create-config-backup
     # Backup creation shows toast (stub implementation - no actual file created)
     ${toast}=    Get Text    .toast