Add admin booking management prompt and deletion

public/admin.css

@@ -262,6 +262,68 @@
   color: var(--color-text-light);
 }
 
+.bookings-list {
+  display: grid;
+  gap: 14px;
+  margin: 18px 0 0;
+  padding: 0;
+  list-style: none;
+}
+
+.booking-row {
+  display: grid;
+  gap: 8px;
+  padding: 14px 0;
+  border-bottom: 1px solid #e5d8ce;
+}
+
+.booking-date {
+  font-family: var(--font-heading);
+  font-size: 1.08rem;
+}
+
+.booking-activities {
+  display: flex;
+  flex-wrap: wrap;
+  gap: 6px 12px;
+  color: var(--color-text);
+}
+
+.booking-activity {
+  font-weight: 600;
+}
+
+.booking-metadata {
+  display: flex;
+  flex-wrap: wrap;
+  gap: 4px 14px;
+  color: var(--color-text-light);
+  font-size: 0.88rem;
+}
+
+.delete-booking-btn {
+  justify-self: start;
+  min-height: 36px;
+  padding: 6px 10px;
+  border: 1px solid #c84a62;
+  border-radius: 5px;
+  background: transparent;
+  color: #a83049;
+  font: inherit;
+  font-weight: 700;
+  cursor: pointer;
+}
+
+.delete-booking-btn:hover,
+.delete-booking-btn:focus-visible {
+  background: #fff0f2;
+}
+
+.delete-booking-btn:disabled {
+  opacity: 0.55;
+  cursor: wait;
+}
+
 .admin-calendar {
   margin-top: 20px;
   padding: 16px;