diff --git a/deploy/plaza-105/g2.tkmind.cn.redirect.nginx.conf b/deploy/plaza-105/g2.tkmind.cn.redirect.nginx.conf
index 70747b3..4ee714b 100644
--- a/deploy/plaza-105/g2.tkmind.cn.redirect.nginx.conf
+++ b/deploy/plaza-105/g2.tkmind.cn.redirect.nginx.conf
@@ -1,6 +1,6 @@
 # g2.tkmind.cn → 301 跳转到 m.tkmind.cn（保留微信 webhook 直至后台改完服务器 URL）
 # 安装：/etc/nginx/conf.d/g2.tkmind.cn.conf
-# 不再依赖 19081 reverse tunnel / 10.10.* 内网地址，直接回源到 180.159.29.143:8081
+# Switched 2026-09-11: upstream via WireGuard to 143 Portal (10.10.0.2:8081); old 58.38.22.103 unreachable.
 
 server {
     listen 80;
@@ -21,7 +21,7 @@ server {
     ssl_dhparam /etc/letsencrypt/ssl-dhparams.pem;
 
     location = /webhooks/wechat-mp/messages {
-        proxy_pass http://180.159.29.143:8081;
+        proxy_pass http://10.10.0.2:8081;
         proxy_http_version 1.1;
         proxy_set_header Host g2.tkmind.cn;
         proxy_set_header X-Real-IP $remote_addr;
diff --git a/deploy/plaza-105/m.tkmind.cn.nginx.conf b/deploy/plaza-105/m.tkmind.cn.nginx.conf
index d47c039..595ee4f 100644
--- a/deploy/plaza-105/m.tkmind.cn.nginx.conf
+++ b/deploy/plaza-105/m.tkmind.cn.nginx.conf
@@ -1,7 +1,7 @@
-# m.tkmind.cn → 105 nginx 直连 103 Memind Portal (180.159.29.143:8081)
+# m.tkmind.cn → 105 nginx via WireGuard to 143 Portal (10.10.0.2:8081)
 # 安装：/etc/nginx/conf.d/m.tkmind.cn.conf
 # 替换旧 ai_mind 配置，作为 Memind H5 正式公网入口
-# 不再依赖 19081 reverse tunnel / 10.10.* 内网地址，直接回源到 180.159.29.143:8081
+# Switched 2026-09-11: old public 58.38.22.103:8081 unreachable after 103 IP migration.
 
 server {
     listen 80;
@@ -24,7 +24,7 @@ server {
     client_max_body_size 100M;
 
     location = /webhooks/wechat-mp/messages {
-        proxy_pass http://180.159.29.143:8081;
+        proxy_pass http://10.10.0.2:8081;
         proxy_http_version 1.1;
         proxy_set_header Host m.tkmind.cn;
         proxy_set_header X-Real-IP $remote_addr;
@@ -41,7 +41,7 @@ server {
     }
 
     location / {
-        proxy_pass http://180.159.29.143:8081;
+        proxy_pass http://10.10.0.2:8081;
         proxy_http_version 1.1;
         proxy_set_header Host $host;
         proxy_set_header X-Real-IP $remote_addr;
diff --git a/deploy/plaza-105/wechat.m.tkmind.cn.nginx.conf b/deploy/plaza-105/wechat.m.tkmind.cn.nginx.conf
index 667581a..a325ca4 100644
--- a/deploy/plaza-105/wechat.m.tkmind.cn.nginx.conf
+++ b/deploy/plaza-105/wechat.m.tkmind.cn.nginx.conf
@@ -1,6 +1,6 @@
 # wechat.m.tkmind.cn → 微信服务号消息推送专用域名
 # 安装：/etc/nginx/conf.d/wechat.m.tkmind.cn.conf
-# 不再依赖 19081 reverse tunnel / 10.10.* 内网地址，直接回源到 180.159.29.143:8081
+# Switched 2026-09-11: upstream via WireGuard to 143 Portal (10.10.0.2:8081); old 58.38.22.103 unreachable.
 
 server {
     listen 80;
@@ -21,7 +21,7 @@ server {
     ssl_dhparam /etc/letsencrypt/ssl-dhparams.pem;
 
     location = /webhooks/wechat-mp/messages {
-        proxy_pass http://180.159.29.143:8081;
+        proxy_pass http://10.10.0.2:8081;
         proxy_http_version 1.1;
         proxy_set_header Host m.tkmind.cn;
         proxy_set_header X-Real-IP $remote_addr;