feat: icons on the buttons, delivery, payment, status and Kanban

- Buttons: add to cart (bag with plus), go to payment (lock), remove from
  the cart (bin).
- Delivery: a pin for pickup in Franca, a truck for home delivery.
- Payment: card and QR code on the methods, copy on the PIX code, a clock on
  its countdown, a check on the confirmation.
- Status: a check when the files are sent, check, alert, redo and cross in
  the quality list instead of Unicode symbols, and a check on finished steps.
- Kanban: a truck or pin for where an order goes, a speech bubble on the
  WhatsApp link, a download arrow on the file buttons.

All Lucide shapes drawn inline, as in the header.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

web/site-steps.js

@@ -97,6 +97,8 @@ function vaiPara(url){
       passos.querySelectorAll('[data-passo]').forEach(a=>{
         const n=Number(a.dataset.passo);
         a.classList.toggle('atual',n===atual); a.classList.toggle('feito',n<atual);
+        const marca=a.querySelector('span');
+        if(marca) marca.innerHTML = n<atual ? icone('ok') : String(n);
         if(n===atual) a.setAttribute('aria-current','step'); else a.removeAttribute('aria-current');
       });
       passos.querySelector('[data-passo="1"]').href =