v1.3.0

• New: site-wide floating Donate button — admin-configured under Settings → DonatoTomato → Floating Donate Button, no code required. Pick a campaign, label, color, size, shape, and position; the button appears on every front-end page automatically and opens the existing donation modal on click.
• New: campaign picker dropdown in the admin — shows campaigns by name (no copy-pasting UUIDs) with status badges.
• New: per-page exclusion list and auto-hide on pages that already contain the inline donation widget.
• New: live preview in the admin settings tab updates as you tweak label, color, size, shape, and position — no need to save and reload the front end to see changes.
• Existing Donate Button block, Donation Widget block, [donatotomato_button] shortcode, and [donatotomato] shortcode are unchanged.