feat(trade): add on-site pickup order flow

Product flag, ON_SITE_PICKUP delivery, mini confirm/receive pages; pay skips warehouse auto-advance.

Co-authored-by: Cursor <cursoragent@cursor.com>

apps/mini-user/src/styles/order.css

@@ -73,58 +73,6 @@
   pointer-events: none;
 }
 
-.order-pickup-option {
-  display: flex;
-  align-items: flex-start;
-  gap: 12px;
-}
-
-.order-pickup-check {
-  width: 20px;
-  height: 20px;
-  margin-top: 2px;
-  flex-shrink: 0;
-  border: 1.5px solid var(--color-outline, #c8c4be);
-  border-radius: 4px;
-  box-sizing: border-box;
-  display: flex;
-  align-items: center;
-  justify-content: center;
-  background: #fff;
-}
-
-.order-pickup-check--on {
-  border-color: var(--color-primary, #8b1a1a);
-  background: var(--color-primary, #8b1a1a);
-}
-
-.order-pickup-check-mark {
-  color: #fff;
-  font-size: 12px;
-  font-weight: 700;
-  line-height: 1;
-}
-
-.order-pickup-copy {
-  flex: 1;
-  min-width: 0;
-}
-
-.order-pickup-title {
-  display: block;
-  font-size: 15px;
-  font-weight: 600;
-  color: var(--color-on-surface);
-  margin-bottom: 4px;
-}
-
-.order-pickup-desc {
-  display: block;
-  font-size: 12px;
-  line-height: 1.5;
-  color: var(--color-on-surface-variant, #78716c);
-}
-
 .order-card {
   background: var(--color-card);
   border-radius: var(--radius-lg);