feat: add secure troop management

package.json

@@ -20,6 +20,7 @@
     },
     "devDependencies": {
         "@eslint/js": "^10.0.1",
+        "@playwright/test": "1.62.0",
         "@types/node": "^26.1.1",
         "@typescript-eslint/eslint-plugin": "^8.65.0",
         "@typescript-eslint/parser": "^8.65.0",