feat(zhulan): add restricted remote development cell

server-tools/zhulan-remote-cell/deploy/guanghulab-zhulan.nginx.conf

@@ -0,0 +1,41 @@
+# BS-GZ-006 only: domain/TLS/reverse proxy. UI and all real services remain on BS-SG-003.
+# The local upstream port must be supplied by a dedicated restricted tunnel.
+location = /zhulan {
+    return 308 /zhulan/;
+}
+
+# Runtime-only verification is reachable from the BS-SG-003 loopback executor,
+# never through the Guangzhou public projection.
+location ^~ /zhulan/api/v1/runtime/ {
+    return 404;
+}
+
+location ^~ /zhulan/ {
+    proxy_pass http://127.0.0.1:17631/;
+    proxy_http_version 1.1;
+    proxy_set_header Host $host;
+    proxy_set_header X-Forwarded-Host $host;
+    proxy_set_header X-Forwarded-Proto https;
+    proxy_set_header X-Forwarded-Prefix /zhulan;
+    # Do not inherit a client-supplied X-Forwarded-For chain. The runtime uses
+    # this value for per-source rate limits.
+    proxy_set_header X-Forwarded-For $remote_addr;
+    proxy_connect_timeout 5s;
+    proxy_read_timeout 30s;
+    proxy_send_timeout 30s;
+    client_max_body_size 1m;
+}
+
+# RFC 8414 path-aware discovery aliases for issuer
+# https://guanghulab.com/zhulan. These are metadata projections only.
+location = /.well-known/oauth-authorization-server/zhulan {
+    proxy_pass http://127.0.0.1:17631/.well-known/oauth-authorization-server;
+    proxy_set_header Host $host;
+    proxy_set_header X-Forwarded-Proto https;
+}
+
+location = /.well-known/oauth-protected-resource/zhulan/mcp {
+    proxy_pass http://127.0.0.1:17631/.well-known/oauth-protected-resource;
+    proxy_set_header Host $host;
+    proxy_set_header X-Forwarded-Proto https;
+}