feat: M2 HTTP/HTTPS 完善

- store: Local 增加 customDomains/subdomain/locations/hostHeaderRewrite/httpHeaders/basicAuth；Remote 增加 vhostHttpPort；migrate() 补列；CRUD 读写（JSOm 编解码）

- render: http/https proxy 输出 customDomains/subdomain/locations/hostHeaderRewrite/httpHeaders/basicAuth

- main: renderRemote 透传 M2 字段（customDomains 逗号拆分 splitCSV）

- web: LocalNode 折叠 HTTP 路由高级区；RemoteNode vhostHTTPPort；StatusView 显示 HTTP 访问端口

- 测试: TestRenderHTTPAdvanced / TestRenderHTTPSUsesCustomDomains；端到端 PUT canvas→config 验证通过

web/src/components/RemoteNode.vue

@@ -45,6 +45,8 @@
         </label>
         <label>TLS SNI <input v-model="transportTlsServerNameField" placeholder="frps.local" /></label>
         <label>连接池 <input v-model.number="transportPoolField" type="number" min="0" /></label>
+        <label class="adv-sep">HTTP 访问端口 (frps vhostHTTPPort)</label>
+        <label>vhostHTTPPort <input v-model.number="vhostHttpPortField" type="number" min="0" /></label>
       </div>
     </div>
   </div>
@@ -84,6 +86,7 @@ const transportProtocolField = field('transportProtocol')
 const transportTlsField = field('transportTls')
 const transportTlsServerNameField = field('transportTlsServerName')
 const transportPoolField = field('transportPool')
+const vhostHttpPortField = field('vhostHttpPort')
 const showAdv = ref(false)
 </script>