feat: Docker Compose deployment configuration

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

nginx/nginx.conf.placeholder

@@ -0,0 +1,27 @@
+# Nginx reverse proxy placeholder for OpenClaw Archive
+#
+# To enable:
+# 1. Rename this file to nginx.conf
+# 2. Update server_name and SSL certificate paths
+# 3. Uncomment the nginx service in docker-compose.yml
+
+upstream django {
+    server web:8000;
+}
+
+server {
+    listen 80;
+    server_name _;  # Update for production
+
+    location /static/ {
+        alias /app/staticfiles/;
+    }
+
+    location / {
+        proxy_pass http://django;
+        proxy_set_header Host $host;
+        proxy_set_header X-Real-IP $remote_addr;
+        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+        proxy_set_header X-Forwarded-Proto $scheme;
+    }
+}