diff --git a/plugins/studio/.codex-plugin/plugin.json b/plugins/studio/.codex-plugin/plugin.json
index bedfacd..ecb5bc0 100644
--- a/plugins/studio/.codex-plugin/plugin.json
+++ b/plugins/studio/.codex-plugin/plugin.json
@@ -1,6 +1,6 @@
 {
   "name": "studio",
-  "version": "0.3.7",
+  "version": "0.3.8",
   "description": "DETA Studio 插件：以 AML 为唯一事实源编辑建筑模型，编译为建筑模型并执行规则校验。",
   "author": {
     "name": "DETA",
diff --git a/plugins/studio/bin/deta-mcp.sh b/plugins/studio/bin/deta-mcp.sh
index 5b01f84..f8f0dde 100755
--- a/plugins/studio/bin/deta-mcp.sh
+++ b/plugins/studio/bin/deta-mcp.sh
@@ -100,12 +100,27 @@ if [ -z "${DETA_TOKEN:-}" ] && [ -f "$HOME/.deta/credentials.json" ]; then
   if [ -n "${DETA_TOKEN:-}" ]; then TOKEN_SOURCE="$HOME/.deta/credentials.json"; fi
 fi
 
+# ── 网关桥（云项目工作区读写 / host-call 中继）：显式 env → 本机网关 → 生产网关 ──
+# 缺它时 build_model 无法把模型写进云项目（会退回只写本地工作区），用户会以为已同步。
+if [ -z "${ANT_WORKSPACE_BRIDGE_URL:-}" ]; then
+  if (exec 3<>/dev/tcp/127.0.0.1/3180) 2>/dev/null; then
+    ANT_WORKSPACE_BRIDGE_URL="http://127.0.0.1:3180"
+    BRIDGE_STATE="本机网关 ${ANT_WORKSPACE_BRIDGE_URL}"
+  else
+    ANT_WORKSPACE_BRIDGE_URL="https://deta.city/workspace-api"
+    BRIDGE_STATE="生产网关 ${ANT_WORKSPACE_BRIDGE_URL}"
+  fi
+  export ANT_WORKSPACE_BRIDGE_URL
+else
+  BRIDGE_STATE="环境变量 ${ANT_WORKSPACE_BRIDGE_URL}"
+fi
+
 if [ -n "${DETA_TOKEN:-}" ]; then
   CLOUD_STATE="已注入（来源=${TOKEN_SOURCE}）"
 else
   CLOUD_STATE="未注入——云类工具返回 auth_required 时调 login 工具（浏览器点一下即可）；无该工具的形态用 ~/.deta/bin/deta login"
 fi
 
-echo "[deta] 档位=${PROFILE} 运行时=${ROOT} 工作区=${WS} 工具面=${DETA_TOOL_SURFACE} 云令牌=${CLOUD_STATE}" >&2
+echo "[deta] 档位=${PROFILE} 运行时=${ROOT} 工作区=${WS} 工具面=${DETA_TOOL_SURFACE} 云令牌=${CLOUD_STATE} 网关桥=${BRIDGE_STATE}" >&2
 
 exec node "$ENTRY" "$@"
diff --git a/plugins/studio/package-lock.json b/plugins/studio/package-lock.json
index b9ba5d9..70d1632 100644
--- a/plugins/studio/package-lock.json
+++ b/plugins/studio/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "deta-studio-plugin",
-  "version": "0.3.7",
+  "version": "0.3.8",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "deta-studio-plugin",
-      "version": "0.3.7",
+      "version": "0.3.8",
       "license": "Proprietary"
     }
   }
diff --git a/plugins/studio/package.json b/plugins/studio/package.json
index 2b872ef..422f76b 100644
--- a/plugins/studio/package.json
+++ b/plugins/studio/package.json
@@ -1,6 +1,6 @@
 {
   "name": "deta-studio-plugin",
-  "version": "0.3.7",
+  "version": "0.3.8",
   "description": "DETA Studio：AML 建筑模型读写与编译校验（Codex 插件 / dsh 组合包 双壳）",
   "type": "module",
   "license": "Proprietary",
diff --git a/plugins/writer/bin/deta-mcp.sh b/plugins/writer/bin/deta-mcp.sh
index 0c0fc07..5cd9ee5 100755
--- a/plugins/writer/bin/deta-mcp.sh
+++ b/plugins/writer/bin/deta-mcp.sh
@@ -100,12 +100,27 @@ if [ -z "${DETA_TOKEN:-}" ] && [ -f "$HOME/.deta/credentials.json" ]; then
   if [ -n "${DETA_TOKEN:-}" ]; then TOKEN_SOURCE="$HOME/.deta/credentials.json"; fi
 fi
 
+# ── 网关桥（云项目工作区读写 / host-call 中继）：显式 env → 本机网关 → 生产网关 ──
+# 缺它时 build_model 无法把模型写进云项目（会退回只写本地工作区），用户会以为已同步。
+if [ -z "${ANT_WORKSPACE_BRIDGE_URL:-}" ]; then
+  if (exec 3<>/dev/tcp/127.0.0.1/3180) 2>/dev/null; then
+    ANT_WORKSPACE_BRIDGE_URL="http://127.0.0.1:3180"
+    BRIDGE_STATE="本机网关 ${ANT_WORKSPACE_BRIDGE_URL}"
+  else
+    ANT_WORKSPACE_BRIDGE_URL="https://deta.city/workspace-api"
+    BRIDGE_STATE="生产网关 ${ANT_WORKSPACE_BRIDGE_URL}"
+  fi
+  export ANT_WORKSPACE_BRIDGE_URL
+else
+  BRIDGE_STATE="环境变量 ${ANT_WORKSPACE_BRIDGE_URL}"
+fi
+
 if [ -n "${DETA_TOKEN:-}" ]; then
   CLOUD_STATE="已注入（来源=${TOKEN_SOURCE}）"
 else
   CLOUD_STATE="未注入——云类工具返回 auth_required 时调 login 工具（浏览器点一下即可）；无该工具的形态用 ~/.deta/bin/deta login"
 fi
 
-echo "[deta] 档位=${PROFILE} 运行时=${ROOT} 工作区=${WS} 工具面=${DETA_TOOL_SURFACE} 云令牌=${CLOUD_STATE}" >&2
+echo "[deta] 档位=${PROFILE} 运行时=${ROOT} 工作区=${WS} 工具面=${DETA_TOOL_SURFACE} 云令牌=${CLOUD_STATE} 网关桥=${BRIDGE_STATE}" >&2
 
 exec node "$ENTRY" "$@"