Windows download polish and AI Portraits mobile improvements.

Windows Support

• The "Update required" banner on the homepage now links to the correct download on the right domain.
• Removed the "Coming Soon" banner for AI Credits on LumaBooth Windows — AI Credits are now live.

AI Portraits

• AI Portraits settings now have a proper toggle switch on mobile.
• Credit count is always visible in AI settings, even when no preset is selected.

Events

• Duplicating an event now properly copies configuration and target device without linking the two events together.

Shares

• Preview icon on shared items now links out to fotoShare, and clicking a thumbnail opens the lightbox.