feat(ux): after-sale multi-step, ban appeal, message types, coupon wallet

Orders center gains after-sale tickets (return ship/cancel/timeline),
coupon wallet list, ban-appeal page, and expanded message center tabs.

assets/css/routes/ban-appeal.css

@@ -0,0 +1,29 @@
+/**
+ * Ban appeal page styles.
+ * @package AKSRT
+ */
+.aksrt-ban-appeal .form-control {
+  width: 100%;
+  box-sizing: border-box;
+  padding: 8px 10px;
+  border: 1px solid var(--main-border-color, #ddd);
+  border-radius: 6px;
+}
+.aksrt-ban-appeal .mb15 { margin-bottom: 15px; }
+.aksrt-ban-appeal .but.c-blue {
+  display: inline-flex;
+  align-items: center;
+  gap: 6px;
+  background: var(--focus-color, #2f6df6);
+  color: #fff;
+  border: 0;
+  border-radius: 6px;
+  padding: 10px 16px;
+  cursor: pointer;
+}
+.aksrt-ban-appeal .c-red { color: #e74c3c; }
+.aksrt-ban-appeal .muted-box {
+  background: var(--surface-2, #f5f6f7);
+  border-radius: 8px;
+  padding: 12px;
+}