- Use ComfyUI SettingCustomRenderer API for action buttons instead of ToggleSwitch
- Add key status display (Client/Server key configuration state)
- Replace raw DOM toast with app.extensionManager.toast API
- Replace window.confirm with app.extensionManager.dialog API
- Inject themed CSS matching ComfyUI design tokens
- Add pi-icon buttons with primary/default/danger variants
- Change category to [CryptIO🔒, Key Management] for proper nav tree structure