feat(pages): 1:1 用户身份认证页 user-auth

Public apply/status shell on aksrt_user_verify_* meta, AJAX submit with
materials upload, admin approve promotes apply payload to auth info.

assets/css/routes/user-auth.css

@@ -0,0 +1,89 @@
+/**
+ * User identity auth page styles (zibll user-auth).
+ *
+ * @package AKSRT
+ */
+
+.aksrt-user-auth-panel {
+	overflow: hidden;
+	margin-top: 20px;
+}
+
+.aksrt-user-auth-panel .colorful-bg.c-blue {
+	background: linear-gradient(135deg, #4e9bff 0%, #2f6df6 100%);
+	color: #fff;
+}
+
+.aksrt-user-auth-panel .muted-2-color {
+	color: var(--muted-2-color, #888);
+}
+
+.aksrt-user-auth-panel .form-control {
+	width: 100%;
+	padding: 8px 10px;
+	border: 1px solid var(--main-border-color, #ddd);
+	border-radius: 6px;
+	box-sizing: border-box;
+}
+
+.aksrt-user-auth-panel .mb20 {
+	margin-bottom: 20px;
+}
+
+.aksrt-user-auth-panel .mb6 {
+	margin-bottom: 6px;
+}
+
+.aksrt-user-auth-panel .but.c-blue,
+.aksrt-user-auth-panel button.but {
+	display: inline-flex;
+	align-items: center;
+	justify-content: center;
+	gap: 6px;
+	background: var(--focus-color, #2f6df6);
+	color: #fff;
+	border: 0;
+	border-radius: 6px;
+	padding: 10px 18px;
+	cursor: pointer;
+}
+
+.aksrt-user-auth-panel .btn-block {
+	width: 100%;
+}
+
+.aksrt-user-auth-panel__imgs {
+	display: flex;
+	flex-wrap: wrap;
+	gap: 8px;
+}
+
+.aksrt-user-auth-panel__imgs .preview-item {
+	width: 96px;
+	height: 96px;
+	border-radius: 6px;
+	overflow: hidden;
+	border: 1px solid var(--main-border-color, #eee);
+}
+
+.aksrt-user-auth-panel__imgs img {
+	width: 100%;
+	height: 100%;
+	object-fit: cover;
+	display: block;
+}
+
+.aksrt-user-auth-panel .c-red {
+	color: #e74c3c;
+}
+
+.page-template-user-auth .content-wrap {
+	display: flex;
+	gap: 20px;
+	flex-wrap: wrap;
+}
+
+.page-template-user-auth .content-layout {
+	flex: 1 1 0;
+	min-width: 0;
+}