Single reusable dialog with a promise-based API: confirmAction({...})
returns Promise<boolean>. Supports title, optional message body,
confirm/cancel labels, and a 'destructive' flag that paints the confirm
button red.
Accessibility: Escape cancels, Enter confirms, confirm button auto-focus,
role=dialog + aria-labelledby, backdrop click = cancel.
Rolled out to: recipe delete, domain remove, profile delete, wishlist
remove. Native confirm() is gone from the codebase.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
