league service

package.json

@@ -71,10 +71,13 @@
     "@types/express": "^4.17.21",
     "@types/jsdom": "^27.0.0",
     "@types/node": "^24.10.1",
+    "@typescript-eslint/eslint-plugin": "^6.0.0",
+    "@typescript-eslint/parser": "^6.0.0",
     "@vitest/ui": "^4.0.15",
     "cheerio": "^1.0.0",
     "commander": "^11.0.0",
     "electron": "^39.2.7",
+    "eslint": "^8.0.0",
     "husky": "^9.1.7",
     "jsdom": "^22.1.0",
     "prettier": "^3.0.0",