前端配置迁至 config/local.js，完善支付、模板库与部署脚本

- 页面直接引用 local.js 设置 SOON_DEPLOY_CONFIG，移除 deploy-config
- Docker sync-config 生成 local.js；更新 README 与 agent-core 说明
- 模板库自动扫描 .soon；新增后端部署/种子/排查脚本
- 完善支付配置、订阅弹窗与后台支付管理页

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

frontend-web/assets/css/member.css

@@ -966,6 +966,34 @@
   gap: 10px;
 }
 
+.soon-pay-channels--single {
+  grid-template-columns: 1fr;
+}
+
+.soon-pay-channel.is-fixed {
+  cursor: default;
+}
+
+.soon-pay-channel.is-fixed:hover {
+  border-color: rgba(255, 255, 255, 0.08);
+  background: rgba(0, 0, 0, 0.18);
+}
+
+.soon-pay-channel.is-fixed.is-active:hover {
+  border-color: var(--soon-accent);
+  background: rgba(0, 150, 136, 0.07);
+}
+
+.soon-pay-channel.is-fixed .soon-pay-channel__radio {
+  border-radius: 50%;
+  background: currentColor;
+  opacity: 0.85;
+}
+
+.soon-pay-channel.is-fixed.is-active .soon-pay-channel__radio::after {
+  display: none;
+}
+
 .soon-pay-channel {
   display: flex;
   align-items: center;