fix: 8001 端口冲突修复脚本，防止双开 gunicorn 卡死全站

Co-authored-by: Cursor <cursoragent@cursor.com>

deploy/safe-deploy.sh

@@ -8,12 +8,17 @@ cd "$DJANGO_DIR"
 echo ">>> git pull"
 git pull origin main
 
-echo ">>> 更新 gunicorn systemd"
+echo ">>> 更新 gunicorn systemd（先停再起，避免 8001 双开）"
 cp deploy/systemd/gunicorn-dianjing.service /etc/systemd/system/gunicorn-dianjing.service
 systemctl daemon-reload
 systemctl enable gunicorn-dianjing.service
-systemctl restart gunicorn-dianjing.service
+systemctl stop gunicorn-dianjing.service 2>/dev/null || true
 sleep 2
+pkill -f 'gunicorn.*a_long_dianjing' 2>/dev/null || true
+pkill -f 'gunicorn -c gunicorn.conf.py' 2>/dev/null || true
+sleep 2
+systemctl start gunicorn-dianjing.service
+sleep 3
 
 echo ">>> 状态"
 systemctl is-active gunicorn-dianjing.service