Update README

restore_nginx.py

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+"""RESTORE: Copy clean config from sites-available/gfil"""
+import paramiko
+
+JD_HOST = "111.228.37.165"
+JD_USER = "root"
+JD_PASS = "Liudecai110"
+
+LAB_HOST = "216.144.233.14"
+LAB_USER = "root"
+LAB_PASS = "Kt9V72Tx2c48ChikKU"
+
+jd = paramiko.SSHClient()
+jd.set_missing_host_key_policy(paramiko.AutoAddPolicy())
+jd.connect(JD_HOST, port=22, username=JD_USER, password=JD_PASS,
+           timeout=20, banner_timeout=60, allow_agent=False, look_for_keys=False)
+
+# Check sites-available/gfil content first, then copy it over
+restore_cmd = f"""sshpass -p '{LAB_PASS}' ssh -o StrictHostKeyChecking=no {LAB_USER}@{LAB_HOST} '
+# Show the clean original
+echo "=== sites-available/gfil (original clean) ==="
+cat /etc/nginx/sites-available/gfil
+
+# Copy clean version over the broken one
+cp /etc/nginx/sites-available/gfil /etc/nginx/sites-enabled/gfil
+
+# Test
+nginx -t 2>&1
+if [ $? -eq 0 ]; then
+    systemctl reload nginx
+    echo "RESTORED: Nginx reloaded with clean config"
+else
+    echo "STILL FAILING after restore"
+fi
+
+# Verify site is back
+curl -s -o /dev/null -w "%{{http_code}}" http://localhost/ 2>/dev/null
+'"""
+stdin, stdout, stderr = jd.exec_command(restore_cmd, timeout=30)
+print(stdout.read().decode())
+jd.close()