diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
new file mode 100644
index 0000000..1cae92d
--- /dev/null
+++ b/CONTRIBUTING.md
@@ -0,0 +1,133 @@
+# Contributing
+
+## Prerequisites
+
+- Node.js 20+
+- Docker + Docker Compose
+
+Install dependencies:
+
+```bash
+npm install
+```
+
+Copy `.env.example` to `.env` and fill in the required values before running.
+
+---
+
+## Starting the application
+
+**Development** (watch mode, restarts on file changes):
+
+```bash
+npm run start:dev
+```
+
+**Production build, then start**:
+
+```bash
+npm run build
+npm run start:prod
+```
+
+The application listens on port **3000** by default.
+
+---
+
+## Running tests
+
+```bash
+npm run test
+```
+
+Run a single spec file:
+
+```bash
+npm run test -- --no-coverage test/scenario.controller.spec.ts
+```
+
+Watch mode:
+
+```bash
+npm run test:watch
+```
+
+Enable verbose NestJS log output during tests:
+
+```bash
+npm run test:debug
+```
+
+---
+
+## Formatting code
+
+[Prettier](https://prettier.io/) is used to format all TypeScript source and test files:
+
+```bash
+npm run format
+```
+
+This rewrites `src/**/*.ts` and `test/**/*.ts` in place.
+
+---
+
+## Linting
+
+[ESLint](https://eslint.org/) with `typescript-eslint` and `eslint-config-prettier` is used:
+
+```bash
+# report issues
+npm run lint
+
+# report and auto-fix where possible
+npm run lint:fix
+```
+
+The project targets zero errors. Run lint before committing.
+
+---
+
+## Building the container
+
+```bash
+docker compose build
+```
+
+To rebuild without the layer cache:
+
+```bash
+docker compose build --no-cache
+```
+
+---
+
+## Running with Docker Compose
+
+Start (detached):
+
+```bash
+docker compose up -d
+```
+
+Build and start in one step:
+
+```bash
+docker compose up -d --build
+```
+
+The application is exposed at **http://localhost:13000**.
+
+SQLite data is persisted in `./data/` and key files are mounted from `./keys/` — both directories are volume-mounted into the container.
+
+Stop and remove containers:
+
+```bash
+docker compose down
+```
+
+View logs:
+
+```bash
+docker compose logs -f
+```
diff --git a/eslint.config.mjs b/eslint.config.mjs
new file mode 100644
index 0000000..ff13b74
--- /dev/null
+++ b/eslint.config.mjs
@@ -0,0 +1,8 @@
+import tseslint from 'typescript-eslint';
+import eslintConfigPrettier from 'eslint-config-prettier';
+
+export default tseslint.config(
+  { ignores: ['dist/**', 'node_modules/**'] },
+  ...tseslint.configs.recommended,
+  eslintConfigPrettier,
+);
diff --git a/package-lock.json b/package-lock.json
index 2c5ea6f..b35d020 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -43,10 +43,14 @@
         "@types/node": "^25.5.2",
         "@types/supertest": "^7.2.0",
         "debug": "^4.4.3",
+        "eslint": "^10.2.0",
+        "eslint-config-prettier": "^10.1.8",
         "jest": "^30.3.0",
+        "prettier": "^3.8.1",
         "supertest": "^7.2.2",
         "ts-jest": "^29.4.9",
-        "typescript": "^6.0.2"
+        "typescript": "^6.0.2",
+        "typescript-eslint": "^8.58.1"
       }
     },
     "node_modules/@angular-devkit/core": {
@@ -932,6 +936,152 @@
         "tslib": "^2.4.0"
       }
     },
+    "node_modules/@eslint-community/eslint-utils": {
+      "version": "4.9.1",
+      "resolved": "https://registry.npmjs.org/@eslint-community/eslint-utils/-/eslint-utils-4.9.1.tgz",
+      "integrity": "sha512-phrYmNiYppR7znFEdqgfWHXR6NCkZEK7hwWDHZUjit/2/U0r6XvkDl0SYnoM51Hq7FhCGdLDT6zxCCOY1hexsQ==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "eslint-visitor-keys": "^3.4.3"
+      },
+      "engines": {
+        "node": "^12.22.0 || ^14.17.0 || >=16.0.0"
+      },
+      "funding": {
+        "url": "https://opencollective.com/eslint"
+      },
+      "peerDependencies": {
+        "eslint": "^6.0.0 || ^7.0.0 || >=8.0.0"
+      }
+    },
+    "node_modules/@eslint-community/eslint-utils/node_modules/eslint-visitor-keys": {
+      "version": "3.4.3",
+      "resolved": "https://registry.npmjs.org/eslint-visitor-keys/-/eslint-visitor-keys-3.4.3.tgz",
+      "integrity": "sha512-wpc+LXeiyiisxPlEkUzU6svyS1frIO3Mgxj1fdy7Pm8Ygzguax2N3Fa/D/ag1WqbOprdI+uY6wMUl8/a2G+iag==",
+      "dev": true,
+      "license": "Apache-2.0",
+      "engines": {
+        "node": "^12.22.0 || ^14.17.0 || >=16.0.0"
+      },
+      "funding": {
+        "url": "https://opencollective.com/eslint"
+      }
+    },
+    "node_modules/@eslint-community/regexpp": {
+      "version": "4.12.2",
+      "resolved": "https://registry.npmjs.org/@eslint-community/regexpp/-/regexpp-4.12.2.tgz",
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+      "dev": true,
+      "license": "MIT",
+      "engines": {
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+      }
+    },
+    "node_modules/@eslint/config-array": {
+      "version": "0.23.5",
+      "resolved": "https://registry.npmjs.org/@eslint/config-array/-/config-array-0.23.5.tgz",
+      "integrity": "sha512-Y3kKLvC1dvTOT+oGlqNQ1XLqK6D1HU2YXPc52NmAlJZbMMWDzGYXMiPRJ8TYD39muD/OTjlZmNJ4ib7dvSrMBA==",
+      "dev": true,
+      "license": "Apache-2.0",
+      "dependencies": {
+        "@eslint/object-schema": "^3.0.5",
+        "debug": "^4.3.1",
+        "minimatch": "^10.2.4"
+      },
+      "engines": {
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+      }
+    },
+    "node_modules/@eslint/config-array/node_modules/balanced-match": {
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+      "resolved": "https://registry.npmjs.org/balanced-match/-/balanced-match-4.0.4.tgz",
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+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": "18 || 20 || >=22"
+      }
+    },
+    "node_modules/@eslint/config-array/node_modules/brace-expansion": {
+      "version": "5.0.5",
+      "resolved": "https://registry.npmjs.org/brace-expansion/-/brace-expansion-5.0.5.tgz",
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+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "balanced-match": "^4.0.2"
+      },
+      "engines": {
+        "node": "18 || 20 || >=22"
+      }
+    },
+    "node_modules/@eslint/config-array/node_modules/minimatch": {
+      "version": "10.2.5",
+      "resolved": "https://registry.npmjs.org/minimatch/-/minimatch-10.2.5.tgz",
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+      "dev": true,
+      "license": "BlueOak-1.0.0",
+      "dependencies": {
+        "brace-expansion": "^5.0.5"
+      },
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+      },
+      "funding": {
+        "url": "https://github.com/sponsors/isaacs"
+      }
+    },
+    "node_modules/@eslint/config-helpers": {
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+      "resolved": "https://registry.npmjs.org/@eslint/config-helpers/-/config-helpers-0.5.5.tgz",
+      "integrity": "sha512-eIJYKTCECbP/nsKaaruF6LW967mtbQbsw4JTtSVkUQc9MneSkbrgPJAbKl9nWr0ZeowV8BfsarBmPpBzGelA2w==",
+      "dev": true,
+      "license": "Apache-2.0",
+      "dependencies": {
+        "@eslint/core": "^1.2.1"
+      },
+      "engines": {
+        "node": "^20.19.0 || ^22.13.0 || >=24"
+      }
+    },
+    "node_modules/@eslint/core": {
+      "version": "1.2.1",
+      "resolved": "https://registry.npmjs.org/@eslint/core/-/core-1.2.1.tgz",
+      "integrity": "sha512-MwcE1P+AZ4C6DWlpin/OmOA54mmIZ/+xZuJiQd4SyB29oAJjN30UW9wkKNptW2ctp4cEsvhlLY/CsQ1uoHDloQ==",
+      "dev": true,
+      "license": "Apache-2.0",
+      "dependencies": {
+        "@types/json-schema": "^7.0.15"
+      },
+      "engines": {
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+      }
+    },
+    "node_modules/@eslint/object-schema": {
+      "version": "3.0.5",
+      "resolved": "https://registry.npmjs.org/@eslint/object-schema/-/object-schema-3.0.5.tgz",
+      "integrity": "sha512-vqTaUEgxzm+YDSdElad6PiRoX4t8VGDjCtt05zn4nU810UIx/uNEV7/lZJ6KwFThKZOzOxzXy48da+No7HZaMw==",
+      "dev": true,
+      "license": "Apache-2.0",
+      "engines": {
+        "node": "^20.19.0 || ^22.13.0 || >=24"
+      }
+    },
+    "node_modules/@eslint/plugin-kit": {
+      "version": "0.7.1",
+      "resolved": "https://registry.npmjs.org/@eslint/plugin-kit/-/plugin-kit-0.7.1.tgz",
+      "integrity": "sha512-rZAP3aVgB9ds9KOeUSL+zZ21hPmo8dh6fnIFwRQj5EAZl9gzR7wxYbYXYysAM8CTqGmUGyp2S4kUdV17MnGuWQ==",
+      "dev": true,
+      "license": "Apache-2.0",
+      "dependencies": {
+        "@eslint/core": "^1.2.1",
+        "levn": "^0.4.1"
+      },
+      "engines": {
+        "node": "^20.19.0 || ^22.13.0 || >=24"
+      }
+    },
     "node_modules/@exodus/bytes": {
       "version": "1.15.0",
       "resolved": "https://registry.npmjs.org/@exodus/bytes/-/bytes-1.15.0.tgz",
@@ -961,6 +1111,58 @@
         "hono": "^4"
       }
     },
+    "node_modules/@humanfs/core": {
+      "version": "0.19.1",
+      "resolved": "https://registry.npmjs.org/@humanfs/core/-/core-0.19.1.tgz",
+      "integrity": "sha512-5DyQ4+1JEUzejeK1JGICcideyfUbGixgS9jNgex5nqkW+cY7WZhxBigmieN5Qnw9ZosSNVC9KQKyb+GUaGyKUA==",
+      "dev": true,
+      "license": "Apache-2.0",
+      "engines": {
+        "node": ">=18.18.0"
+      }
+    },
+    "node_modules/@humanfs/node": {
+      "version": "0.16.7",
+      "resolved": "https://registry.npmjs.org/@humanfs/node/-/node-0.16.7.tgz",
+      "integrity": "sha512-/zUx+yOsIrG4Y43Eh2peDeKCxlRt/gET6aHfaKpuq267qXdYDFViVHfMaLyygZOnl0kGWxFIgsBy8QFuTLUXEQ==",
+      "dev": true,
+      "license": "Apache-2.0",
+      "dependencies": {
+        "@humanfs/core": "^0.19.1",
+        "@humanwhocodes/retry": "^0.4.0"
+      },
+      "engines": {
+        "node": ">=18.18.0"
+      }
+    },
+    "node_modules/@humanwhocodes/module-importer": {
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/@humanwhocodes/module-importer/-/module-importer-1.0.1.tgz",
+      "integrity": "sha512-bxveV4V8v5Yb4ncFTT3rPSgZBOpCkjfK0y4oVVVJwIuDVBRMDXrPyXRL988i5ap9m9bnyEEjWfm5WkBmtffLfA==",
+      "dev": true,
+      "license": "Apache-2.0",
+      "engines": {
+        "node": ">=12.22"
+      },
+      "funding": {
+        "type": "github",
+        "url": "https://github.com/sponsors/nzakas"
+      }
+    },
+    "node_modules/@humanwhocodes/retry": {
+      "version": "0.4.3",
+      "resolved": "https://registry.npmjs.org/@humanwhocodes/retry/-/retry-0.4.3.tgz",
+      "integrity": "sha512-bV0Tgo9K4hfPCek+aMAn81RppFKv2ySDQeMoSZuvTASywNTnVJCArCZE2FWqpvIatKu7VMRLWlR1EazvVhDyhQ==",
+      "dev": true,
+      "license": "Apache-2.0",
+      "engines": {
+        "node": ">=18.18"
+      },
+      "funding": {
+        "type": "github",
+        "url": "https://github.com/sponsors/nzakas"
+      }
+    },
     "node_modules/@inquirer/ansi": {
       "version": "1.0.2",
       "resolved": "https://registry.npmjs.org/@inquirer/ansi/-/ansi-1.0.2.tgz",
@@ -2683,6 +2885,13 @@
         "@types/estree": "*"
       }
     },
+    "node_modules/@types/esrecurse": {
+      "version": "4.3.1",
+      "resolved": "https://registry.npmjs.org/@types/esrecurse/-/esrecurse-4.3.1.tgz",
+      "integrity": "sha512-xJBAbDifo5hpffDBuHl0Y8ywswbiAp/Wi7Y/GtAgSlZyIABppyurxVueOPE8LUQOxdlgi6Zqce7uoEpqNTeiUw==",
+      "dev": true,
+      "license": "MIT"
+    },
     "node_modules/@types/estree": {
       "version": "1.0.8",
       "resolved": "https://registry.npmjs.org/@types/estree/-/estree-1.0.8.tgz",
@@ -2933,6 +3142,275 @@
       "dev": true,
       "license": "MIT"
     },
+    "node_modules/@typescript-eslint/eslint-plugin": {
+      "version": "8.58.1",
+      "resolved": "https://registry.npmjs.org/@typescript-eslint/eslint-plugin/-/eslint-plugin-8.58.1.tgz",
+      "integrity": "sha512-eSkwoemjo76bdXl2MYqtxg51HNwUSkWfODUOQ3PaTLZGh9uIWWFZIjyjaJnex7wXDu+TRx+ATsnSxdN9YWfRTQ==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "@eslint-community/regexpp": "^4.12.2",
+        "@typescript-eslint/scope-manager": "8.58.1",
+        "@typescript-eslint/type-utils": "8.58.1",
+        "@typescript-eslint/utils": "8.58.1",
+        "@typescript-eslint/visitor-keys": "8.58.1",
+        "ignore": "^7.0.5",
+        "natural-compare": "^1.4.0",
+        "ts-api-utils": "^2.5.0"
+      },
+      "engines": {
+        "node": "^18.18.0 || ^20.9.0 || >=21.1.0"
+      },
+      "funding": {
+        "type": "opencollective",
+        "url": "https://opencollective.com/typescript-eslint"
+      },
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+        "eslint": "^8.57.0 || ^9.0.0 || ^10.0.0",
+        "typescript": ">=4.8.4 <6.1.0"
+      }
+    },
+    "node_modules/@typescript-eslint/eslint-plugin/node_modules/ignore": {
+      "version": "7.0.5",
+      "resolved": "https://registry.npmjs.org/ignore/-/ignore-7.0.5.tgz",
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+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": ">= 4"
+      }
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+    "node_modules/@typescript-eslint/parser": {
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+        "debug": "^4.4.3"
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+        "typescript": ">=4.8.4 <6.1.0"
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+      }
+    },
     "node_modules/etag": {
       "version": "1.8.1",
       "resolved": "https://registry.npmjs.org/etag/-/etag-1.8.1.tgz",
@@ -5112,6 +5897,13 @@
       "dev": true,
       "license": "MIT"
     },
+    "node_modules/fast-levenshtein": {
+      "version": "2.0.6",
+      "resolved": "https://registry.npmjs.org/fast-levenshtein/-/fast-levenshtein-2.0.6.tgz",
+      "integrity": "sha512-DCXu6Ifhqcks7TZKY3Hxp3y6qphY5SJZmrWMDrKcERSOXWQdMhU9Ig/PYrzyw/ul9jOIyh0N4M0tbC5hodg8dw==",
+      "dev": true,
+      "license": "MIT"
+    },
     "node_modules/fast-safe-stringify": {
       "version": "2.1.1",
       "resolved": "https://registry.npmjs.org/fast-safe-stringify/-/fast-safe-stringify-2.1.1.tgz",
@@ -5144,6 +5936,37 @@
         "bser": "2.1.1"
       }
     },
+    "node_modules/fdir": {
+      "version": "6.5.0",
+      "resolved": "https://registry.npmjs.org/fdir/-/fdir-6.5.0.tgz",
+      "integrity": "sha512-tIbYtZbucOs0BRGqPJkshJUYdL+SDH7dVM8gjy+ERp3WAUjLEFJE+02kanyHtwjWOnwrKYBiwAmM0p4kLJAnXg==",
+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": ">=12.0.0"
+      },
+      "peerDependencies": {
+        "picomatch": "^3 || ^4"
+      },
+      "peerDependenciesMeta": {
+        "picomatch": {
+          "optional": true
+        }
+      }
+    },
+    "node_modules/file-entry-cache": {
+      "version": "8.0.0",
+      "resolved": "https://registry.npmjs.org/file-entry-cache/-/file-entry-cache-8.0.0.tgz",
+      "integrity": "sha512-XXTUwCvisa5oacNGRP9SfNtYBNAMi+RPwBFmblZEF7N7swHYQS6/Zfk7SRwx4D5j3CH211YNRco1DEMNVfZCnQ==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "flat-cache": "^4.0.0"
+      },
+      "engines": {
+        "node": ">=16.0.0"
+      }
+    },
     "node_modules/file-type": {
       "version": "21.3.4",
       "resolved": "https://registry.npmjs.org/file-type/-/file-type-21.3.4.tgz",
@@ -5203,6 +6026,27 @@
         "node": ">=8"
       }
     },
+    "node_modules/flat-cache": {
+      "version": "4.0.1",
+      "resolved": "https://registry.npmjs.org/flat-cache/-/flat-cache-4.0.1.tgz",
+      "integrity": "sha512-f7ccFPK3SXFHpx15UIGyRJ/FJQctuKZ0zVuN3frBo4HnK3cay9VEW0R6yPYFHC0AgqhukPzKjq22t5DmAyqGyw==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "flatted": "^3.2.9",
+        "keyv": "^4.5.4"
+      },
+      "engines": {
+        "node": ">=16"
+      }
+    },
+    "node_modules/flatted": {
+      "version": "3.4.2",
+      "resolved": "https://registry.npmjs.org/flatted/-/flatted-3.4.2.tgz",
+      "integrity": "sha512-PjDse7RzhcPkIJwy5t7KPWQSZ9cAbzQXcafsetQoD7sOJRQlGikNbx7yZp2OotDnJyrDcbyRq3Ttb18iYOqkxA==",
+      "dev": true,
+      "license": "ISC"
+    },
     "node_modules/for-each": {
       "version": "0.3.5",
       "resolved": "https://registry.npmjs.org/for-each/-/for-each-0.3.5.tgz",
@@ -5499,6 +6343,19 @@
         "url": "https://github.com/sponsors/isaacs"
       }
     },
+    "node_modules/glob-parent": {
+      "version": "6.0.2",
+      "resolved": "https://registry.npmjs.org/glob-parent/-/glob-parent-6.0.2.tgz",
+      "integrity": "sha512-XxwI8EOhVQgWp6iDL+3b0r86f4d6AX6zSU55HfB4ydCEuXLXc5FcYeOu+nnGftS4TEju/11rt4KJPTMgbfmv4A==",
+      "dev": true,
+      "license": "ISC",
+      "dependencies": {
+        "is-glob": "^4.0.3"
+      },
+      "engines": {
+        "node": ">=10.13.0"
+      }
+    },
     "node_modules/glob-to-regexp": {
       "version": "0.4.1",
       "resolved": "https://registry.npmjs.org/glob-to-regexp/-/glob-to-regexp-0.4.1.tgz",
@@ -5751,6 +6608,16 @@
       ],
       "license": "BSD-3-Clause"
     },
+    "node_modules/ignore": {
+      "version": "5.3.2",
+      "resolved": "https://registry.npmjs.org/ignore/-/ignore-5.3.2.tgz",
+      "integrity": "sha512-hsBTNUqQTDwkWtcdYI2i06Y/nUBEsNEDJKjWdigLvegy8kDuJAS8uRlpkkcQpyEXL0Z/pjDy5HBmMjRCJ2gq+g==",
+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": ">= 4"
+      }
+    },
     "node_modules/import-fresh": {
       "version": "3.3.1",
       "resolved": "https://registry.npmjs.org/import-fresh/-/import-fresh-3.3.1.tgz",
@@ -5859,6 +6726,16 @@
         "url": "https://github.com/sponsors/ljharb"
       }
     },
+    "node_modules/is-extglob": {
+      "version": "2.1.1",
+      "resolved": "https://registry.npmjs.org/is-extglob/-/is-extglob-2.1.1.tgz",
+      "integrity": "sha512-SbKbANkN603Vi4jEZv49LeVJMn4yGwsbzZworEoyEiutsN3nJYdbO36zfhGJ6QEDpOZIFkDtnq5JRxmvl3jsoQ==",
+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": ">=0.10.0"
+      }
+    },
     "node_modules/is-fullwidth-code-point": {
       "version": "3.0.0",
       "resolved": "https://registry.npmjs.org/is-fullwidth-code-point/-/is-fullwidth-code-point-3.0.0.tgz",
@@ -5878,6 +6755,19 @@
         "node": ">=6"
       }
     },
+    "node_modules/is-glob": {
+      "version": "4.0.3",
+      "resolved": "https://registry.npmjs.org/is-glob/-/is-glob-4.0.3.tgz",
+      "integrity": "sha512-xelSayHH36ZgE7ZWhli7pW34hNbNl8Ojv5KVmkJD4hBdD3th8Tfk9vYasLM+mXWOZhFkgZfxhLSnrwRr4elSSg==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "is-extglob": "^2.1.1"
+      },
+      "engines": {
+        "node": ">=0.10.0"
+      }
+    },
     "node_modules/is-interactive": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/is-interactive/-/is-interactive-1.0.0.tgz",
@@ -7014,6 +7904,13 @@
         "node": ">=6"
       }
     },
+    "node_modules/json-buffer": {
+      "version": "3.0.1",
+      "resolved": "https://registry.npmjs.org/json-buffer/-/json-buffer-3.0.1.tgz",
+      "integrity": "sha512-4bV5BfR2mqfQTJm+V5tPPdf+ZpuhiIvTuAB5g8kcrXOZpTT/QwwVRWBywX1ozr6lEuPdbHxwaJlm9G6mI2sfSQ==",
+      "dev": true,
+      "license": "MIT"
+    },
     "node_modules/json-parse-even-better-errors": {
       "version": "2.3.1",
       "resolved": "https://registry.npmjs.org/json-parse-even-better-errors/-/json-parse-even-better-errors-2.3.1.tgz",
@@ -7033,6 +7930,13 @@
       "integrity": "sha512-fQhoXdcvc3V28x7C7BMs4P5+kNlgUURe2jmUT1T//oBRMDrqy1QPelJimwZGo7Hg9VPV3EQV5Bnq4hbFy2vetA==",
       "license": "BSD-2-Clause"
     },
+    "node_modules/json-stable-stringify-without-jsonify": {
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/json-stable-stringify-without-jsonify/-/json-stable-stringify-without-jsonify-1.0.1.tgz",
+      "integrity": "sha512-Bdboy+l7tA3OGW6FjyFHWkP5LuByj1Tk33Ljyq0axyzdk9//JSi2u3fP1QSmd1KNwq6VOKYGlAu87CisVir6Pw==",
+      "dev": true,
+      "license": "MIT"
+    },
     "node_modules/json5": {
       "version": "2.2.3",
       "resolved": "https://registry.npmjs.org/json5/-/json5-2.2.3.tgz",
@@ -7066,6 +7970,16 @@
         "graceful-fs": "^4.1.6"
       }
     },
+    "node_modules/keyv": {
+      "version": "4.5.4",
+      "resolved": "https://registry.npmjs.org/keyv/-/keyv-4.5.4.tgz",
+      "integrity": "sha512-oxVHkHR/EJf2CNXnWxRLW6mg7JyCCUcG0DtEGmL2ctUo1PNTin1PUil+r/+4r5MpVgC/fn1kjsx7mjSujKqIpw==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "json-buffer": "3.0.1"
+      }
+    },
     "node_modules/leven": {
       "version": "3.1.0",
       "resolved": "https://registry.npmjs.org/leven/-/leven-3.1.0.tgz",
@@ -7076,6 +7990,20 @@
         "node": ">=6"
       }
     },
+    "node_modules/levn": {
+      "version": "0.4.1",
+      "resolved": "https://registry.npmjs.org/levn/-/levn-0.4.1.tgz",
+      "integrity": "sha512-+bT2uH4E5LGE7h/n3evcS/sQlJXCpIp6ym8OWJ5eV6+67Dsql/LaaT7qJBAt2rzfoa/5QBGBhxDix1dMt2kQKQ==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "prelude-ls": "^1.2.1",
+        "type-check": "~0.4.0"
+      },
+      "engines": {
+        "node": ">= 0.8.0"
+      }
+    },
     "node_modules/libphonenumber-js": {
       "version": "1.12.41",
       "resolved": "https://registry.npmjs.org/libphonenumber-js/-/libphonenumber-js-1.12.41.tgz",
@@ -7636,6 +8564,24 @@
         "url": "https://github.com/sponsors/sindresorhus"
       }
     },
+    "node_modules/optionator": {
+      "version": "0.9.4",
+      "resolved": "https://registry.npmjs.org/optionator/-/optionator-0.9.4.tgz",
+      "integrity": "sha512-6IpQ7mKUxRcZNLIObR0hz7lxsapSSIYNZJwXPGeF0mTVqGKFIXj1DQcMoT22S3ROcLyY/rz0PWaWZ9ayWmad9g==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "deep-is": "^0.1.3",
+        "fast-levenshtein": "^2.0.6",
+        "levn": "^0.4.1",
+        "prelude-ls": "^1.2.1",
+        "type-check": "^0.4.0",
+        "word-wrap": "^1.2.5"
+      },
+      "engines": {
+        "node": ">= 0.8.0"
+      }
+    },
     "node_modules/ora": {
       "version": "5.4.1",
       "resolved": "https://registry.npmjs.org/ora/-/ora-5.4.1.tgz",
@@ -7968,6 +8914,32 @@
         "node": ">=10"
       }
     },
+    "node_modules/prelude-ls": {
+      "version": "1.2.1",
+      "resolved": "https://registry.npmjs.org/prelude-ls/-/prelude-ls-1.2.1.tgz",
+      "integrity": "sha512-vkcDPrRZo1QZLbn5RLGPpg/WmIQ65qoWWhcGKf/b5eplkkarX0m9z8ppCat4mlOqUsWpyNuYgO3VRyrYHSzX5g==",
+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": ">= 0.8.0"
+      }
+    },
+    "node_modules/prettier": {
+      "version": "3.8.1",
+      "resolved": "https://registry.npmjs.org/prettier/-/prettier-3.8.1.tgz",
+      "integrity": "sha512-UOnG6LftzbdaHZcKoPFtOcCKztrQ57WkHDeRD9t/PTQtmT0NHSeWWepj6pS0z/N7+08BHFDQVUrfmfMRcZwbMg==",
+      "dev": true,
+      "license": "MIT",
+      "bin": {
+        "prettier": "bin/prettier.cjs"
+      },
+      "engines": {
+        "node": ">=14"
+      },
+      "funding": {
+        "url": "https://github.com/prettier/prettier?sponsor=1"
+      }
+    },
     "node_modules/pretty-format": {
       "version": "30.3.0",
       "resolved": "https://registry.npmjs.org/pretty-format/-/pretty-format-30.3.0.tgz",
@@ -9085,6 +10057,36 @@
         "url": "https://github.com/sponsors/isaacs"
       }
     },
+    "node_modules/tinyglobby": {
+      "version": "0.2.16",
+      "resolved": "https://registry.npmjs.org/tinyglobby/-/tinyglobby-0.2.16.tgz",
+      "integrity": "sha512-pn99VhoACYR8nFHhxqix+uvsbXineAasWm5ojXoN8xEwK5Kd3/TrhNn1wByuD52UxWRLy8pu+kRMniEi6Eq9Zg==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "fdir": "^6.5.0",
+        "picomatch": "^4.0.4"
+      },
+      "engines": {
+        "node": ">=12.0.0"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/SuperchupuDev"
+      }
+    },
+    "node_modules/tinyglobby/node_modules/picomatch": {
+      "version": "4.0.4",
+      "resolved": "https://registry.npmjs.org/picomatch/-/picomatch-4.0.4.tgz",
+      "integrity": "sha512-QP88BAKvMam/3NxH6vj2o21R6MjxZUAd6nlwAS/pnGvN9IVLocLHxGYIzFhg6fUQ+5th6P4dv4eW9jX3DSIj7A==",
+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": ">=12"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/jonschlinkert"
+      }
+    },
     "node_modules/tldts": {
       "version": "7.0.28",
       "resolved": "https://registry.npmjs.org/tldts/-/tldts-7.0.28.tgz",
@@ -9175,6 +10177,19 @@
         "node": ">=20"
       }
     },
+    "node_modules/ts-api-utils": {
+      "version": "2.5.0",
+      "resolved": "https://registry.npmjs.org/ts-api-utils/-/ts-api-utils-2.5.0.tgz",
+      "integrity": "sha512-OJ/ibxhPlqrMM0UiNHJ/0CKQkoKF243/AEmplt3qpRgkW8VG7IfOS41h7V8TjITqdByHzrjcS/2si+y4lIh8NA==",
+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": ">=18.12"
+      },
+      "peerDependencies": {
+        "typescript": ">=4.8.4"
+      }
+    },
     "node_modules/ts-jest": {
       "version": "29.4.9",
       "resolved": "https://registry.npmjs.org/ts-jest/-/ts-jest-29.4.9.tgz",
@@ -9290,6 +10305,19 @@
         "node": "*"
       }
     },
+    "node_modules/type-check": {
+      "version": "0.4.0",
+      "resolved": "https://registry.npmjs.org/type-check/-/type-check-0.4.0.tgz",
+      "integrity": "sha512-XleUoc9uwGXqjWwXaUTZAmzMcFZ5858QA2vvx1Ur5xIcixXIP+8LnFDgRplU30us6teqdlskFfu+ae4K79Ooew==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "prelude-ls": "^1.2.1"
+      },
+      "engines": {
+        "node": ">= 0.8.0"
+      }
+    },
     "node_modules/type-detect": {
       "version": "4.0.8",
       "resolved": "https://registry.npmjs.org/type-detect/-/type-detect-4.0.8.tgz",
@@ -9566,6 +10594,30 @@
         "node": ">=14.17"
       }
     },
+    "node_modules/typescript-eslint": {
+      "version": "8.58.1",
+      "resolved": "https://registry.npmjs.org/typescript-eslint/-/typescript-eslint-8.58.1.tgz",
+      "integrity": "sha512-gf6/oHChByg9HJvhMO1iBexJh12AqqTfnuxscMDOVqfJW3htsdRJI/GfPpHTTcyeB8cSTUY2JcZmVgoyPqcrDg==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "@typescript-eslint/eslint-plugin": "8.58.1",
+        "@typescript-eslint/parser": "8.58.1",
+        "@typescript-eslint/typescript-estree": "8.58.1",
+        "@typescript-eslint/utils": "8.58.1"
+      },
+      "engines": {
+        "node": "^18.18.0 || ^20.9.0 || >=21.1.0"
+      },
+      "funding": {
+        "type": "opencollective",
+        "url": "https://opencollective.com/typescript-eslint"
+      },
+      "peerDependencies": {
+        "eslint": "^8.57.0 || ^9.0.0 || ^10.0.0",
+        "typescript": ">=4.8.4 <6.1.0"
+      }
+    },
     "node_modules/uglify-js": {
       "version": "3.19.3",
       "resolved": "https://registry.npmjs.org/uglify-js/-/uglify-js-3.19.3.tgz",
@@ -10011,6 +11063,16 @@
         "url": "https://github.com/sponsors/ljharb"
       }
     },
+    "node_modules/word-wrap": {
+      "version": "1.2.5",
+      "resolved": "https://registry.npmjs.org/word-wrap/-/word-wrap-1.2.5.tgz",
+      "integrity": "sha512-BN22B5eaMMI9UMtjrGd5g5eCYPpCPDUy0FJXbYsaT5zYxjFOckS53SQDE3pWkVoWpHXVb3BrYcEN4Twa55B5cA==",
+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": ">=0.10.0"
+      }
+    },
     "node_modules/wordwrap": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/wordwrap/-/wordwrap-1.0.0.tgz",
diff --git a/package.json b/package.json
index 7dd13a5..dc55b2c 100644
--- a/package.json
+++ b/package.json
@@ -8,6 +8,9 @@
     "start": "nest start",
     "start:dev": "nest start --watch",
     "start:prod": "node dist/main",
+    "format": "prettier --write \"src/**/*.ts\" \"test/**/*.ts\"",
+    "lint": "eslint \"src/**/*.ts\" \"test/**/*.ts\"",
+    "lint:fix": "eslint --fix \"src/**/*.ts\" \"test/**/*.ts\"",
     "test": "jest",
     "test:debug": "DEBUG=test jest",
     "test:watch": "jest --watch"
@@ -50,9 +53,13 @@
     "@types/node": "^25.5.2",
     "@types/supertest": "^7.2.0",
     "debug": "^4.4.3",
+    "eslint": "^10.2.0",
+    "eslint-config-prettier": "^10.1.8",
     "jest": "^30.3.0",
+    "prettier": "^3.8.1",
     "supertest": "^7.2.2",
     "ts-jest": "^29.4.9",
-    "typescript": "^6.0.2"
+    "typescript": "^6.0.2",
+    "typescript-eslint": "^8.58.1"
   }
 }
diff --git a/src/app.module.ts b/src/app.module.ts
index 7d64940..e10b820 100644
--- a/src/app.module.ts
+++ b/src/app.module.ts
@@ -1,33 +1,42 @@
-import { Module } from '@nestjs/common';
-import { ConfigModule, ConfigService } from '@nestjs/config';
-import { TypeOrmModule } from '@nestjs/typeorm';
-import { ScheduleModule } from '@nestjs/schedule';
-import { HealthModule } from './health/health.module';
-import { AuthModule } from './auth/auth.module';
-import { BrowserModule } from './browser/browser.module';
-import { SessionEntity } from './session/session.entity';
-import { EnvironmentEntity } from './environment/environment.entity';
-import { EnvironmentModule } from './environment/environment.module';
-import { McpModule } from './mcp/mcp.module';
-import { ScenarioEntity } from './scenario/scenario.entity';
-import { ScenarioStepEntity } from './scenario/scenario-step.entity';
-import { ScenarioRunEntity } from './scenario/scenario-run.entity';
-import { ScenarioRunStepEntity } from './scenario/scenario-run-step.entity';
-import { ScenarioModule } from './scenario/scenario.module';
+import { Module } from "@nestjs/common";
+import { ConfigModule, ConfigService } from "@nestjs/config";
+import { TypeOrmModule } from "@nestjs/typeorm";
+import { ScheduleModule } from "@nestjs/schedule";
+import { HealthModule } from "./health/health.module";
+import { AuthModule } from "./auth/auth.module";
+import { BrowserModule } from "./browser/browser.module";
+import { SessionEntity } from "./session/session.entity";
+import { EnvironmentEntity } from "./environment/environment.entity";
+import { EnvironmentModule } from "./environment/environment.module";
+import { McpModule } from "./mcp/mcp.module";
+import { ScenarioEntity } from "./scenario/scenario.entity";
+import { ScenarioStepEntity } from "./scenario/scenario-step.entity";
+import { ScenarioRunEntity } from "./scenario/scenario-run.entity";
+import { ScenarioRunStepEntity } from "./scenario/scenario-run-step.entity";
+import { ScenarioRunLogEntity } from "./scenario/scenario-run-log.entity";
+import { ScenarioModule } from "./scenario/scenario.module";
 
 @Module({
   imports: [
     ConfigModule.forRoot({
       isGlobal: true,
-      envFilePath: '.env',
+      envFilePath: ".env",
     }),
     ScheduleModule.forRoot(),
     TypeOrmModule.forRootAsync({
       inject: [ConfigService],
       useFactory: (config: ConfigService) => ({
-        type: 'better-sqlite3',
-        database: config.get<string>('DB_PATH', 'data/sessions.db'),
-        entities: [SessionEntity, EnvironmentEntity, ScenarioEntity, ScenarioStepEntity, ScenarioRunEntity, ScenarioRunStepEntity],
+        type: "better-sqlite3",
+        database: config.get<string>("DB_PATH", "data/sessions.db"),
+        entities: [
+          SessionEntity,
+          EnvironmentEntity,
+          ScenarioEntity,
+          ScenarioStepEntity,
+          ScenarioRunEntity,
+          ScenarioRunStepEntity,
+          ScenarioRunLogEntity,
+        ],
         synchronize: true,
       }),
     }),
diff --git a/src/auth/auth.controller.ts b/src/auth/auth.controller.ts
index 43a7577..be6f7df 100644
--- a/src/auth/auth.controller.ts
+++ b/src/auth/auth.controller.ts
@@ -1,26 +1,51 @@
-import { Body, Controller, Get, Post } from '@nestjs/common';
-import { ApiOperation, ApiResponse, ApiTags } from '@nestjs/swagger';
-import { AuthService } from './auth.service';
-import { LoginDto } from './dto/login.dto';
+import { Body, Controller, Get, Post } from "@nestjs/common";
+import { ApiOperation, ApiResponse, ApiTags } from "@nestjs/swagger";
+import { AuthService } from "./auth.service";
+import { LoginDto } from "./dto/login.dto";
 
-@ApiTags('auth')
+@ApiTags("auth")
 @Controller()
 export class AuthController {
   constructor(private readonly authService: AuthService) {}
 
-  @Get('keys')
-  @ApiOperation({ summary: 'List available key identifiers from the keys directory' })
-  @ApiResponse({ status: 200, description: 'List of key names', schema: { properties: { keys: { type: 'array', items: { type: 'string' } } } } })
+  @Get("keys")
+  @ApiOperation({
+    summary: "List available key identifiers from the keys directory",
+  })
+  @ApiResponse({
+    status: 200,
+    description: "List of key names",
+    schema: {
+      properties: { keys: { type: "array", items: { type: "string" } } },
+    },
+  })
   listKeys(): { keys: string[] } {
     return { keys: this.authService.listKeys() };
   }
 
-  @Post('login')
-  @ApiOperation({ summary: 'Log in using a file key and return the session token' })
-  @ApiResponse({ status: 201, description: 'Login successful', schema: { properties: { token: { type: 'string' }, sessionName: { type: 'string' } } } })
-  @ApiResponse({ status: 400, description: 'Key not found or invalid' })
-  @ApiResponse({ status: 500, description: 'Automation failed' })
-  login(@Body() dto: LoginDto): Promise<{ token: string; sessionName: string }> {
-    return this.authService.login(dto.key, dto.environmentName, dto.sessionName);
+  @Post("login")
+  @ApiOperation({
+    summary: "Log in using a file key and return the session token",
+  })
+  @ApiResponse({
+    status: 201,
+    description: "Login successful",
+    schema: {
+      properties: {
+        token: { type: "string" },
+        sessionName: { type: "string" },
+      },
+    },
+  })
+  @ApiResponse({ status: 400, description: "Key not found or invalid" })
+  @ApiResponse({ status: 500, description: "Automation failed" })
+  login(
+    @Body() dto: LoginDto,
+  ): Promise<{ token: string; sessionName: string }> {
+    return this.authService.login(
+      dto.key,
+      dto.environmentName,
+      dto.sessionName,
+    );
   }
 }
diff --git a/src/auth/auth.module.ts b/src/auth/auth.module.ts
index f276c2b..c253584 100644
--- a/src/auth/auth.module.ts
+++ b/src/auth/auth.module.ts
@@ -1,8 +1,8 @@
-import { Module } from '@nestjs/common';
-import { AuthController } from './auth.controller';
-import { AuthService } from './auth.service';
-import { SessionModule } from '../session/session.module';
-import { EnvironmentModule } from '../environment/environment.module';
+import { Module } from "@nestjs/common";
+import { AuthController } from "./auth.controller";
+import { AuthService } from "./auth.service";
+import { SessionModule } from "../session/session.module";
+import { EnvironmentModule } from "../environment/environment.module";
 
 @Module({
   imports: [SessionModule, EnvironmentModule],
diff --git a/src/auth/auth.service.ts b/src/auth/auth.service.ts
index f1d1705..d750de8 100644
--- a/src/auth/auth.service.ts
+++ b/src/auth/auth.service.ts
@@ -3,16 +3,16 @@ import {
   BadRequestException,
   InternalServerErrorException,
   NotFoundException,
-} from '@nestjs/common';
-import { TraceLogger } from '../common/trace-logger';
-import { ConfigService } from '@nestjs/config';
-import { chromium } from 'playwright';
-import type { Page } from 'playwright';
-import * as fs from 'fs';
-import * as path from 'path';
-import * as crypto from 'crypto';
-import { SessionService } from '../session/session.service';
-import { EnvironmentService } from '../environment/environment.service';
+} from "@nestjs/common";
+import { TraceLogger } from "../common/trace-logger";
+import { ConfigService } from "@nestjs/config";
+import { chromium } from "playwright";
+import type { Page } from "playwright";
+import * as fs from "fs";
+import * as path from "path";
+import * as crypto from "crypto";
+import { SessionService } from "../session/session.service";
+import { EnvironmentService } from "../environment/environment.service";
 
 interface KeyDescriptor {
   keyFile?: string;
@@ -30,16 +30,15 @@ export class AuthService {
     private readonly sessionService: SessionService,
     private readonly environmentService: EnvironmentService,
   ) {
-    this.keysDir = path.resolve(
-      this.config.get<string>('KEYS_DIR', 'keys'),
-    );
+    this.keysDir = path.resolve(this.config.get<string>("KEYS_DIR", "keys"));
   }
 
   listKeys(): string[] {
     if (!fs.existsSync(this.keysDir)) return [];
-    return fs.readdirSync(this.keysDir)
-      .filter(f => f.endsWith('.json'))
-      .map(f => path.basename(f, '.json'));
+    return fs
+      .readdirSync(this.keysDir)
+      .filter((f) => f.endsWith(".json"))
+      .map((f) => path.basename(f, ".json"));
   }
 
   private loadKeyDescriptor(keyId: string): KeyDescriptor {
@@ -48,51 +47,73 @@ export class AuthService {
       throw new BadRequestException(`Key not found: ${keyId}`);
     }
     try {
-      return JSON.parse(fs.readFileSync(keyJsonPath, 'utf-8')) as KeyDescriptor;
+      return JSON.parse(fs.readFileSync(keyJsonPath, "utf-8")) as KeyDescriptor;
     } catch (err) {
-      throw new BadRequestException(`Cannot read key descriptor: ${keyId}`, { cause: err });
+      throw new BadRequestException(`Cannot read key descriptor: ${keyId}`, {
+        cause: err,
+      });
     }
   }
 
-  async login(keyId: string, environmentName: string, sessionName?: string): Promise<{ token: string; sessionName: string }> {
+  async login(
+    keyId: string,
+    environmentName: string,
+    sessionName?: string,
+  ): Promise<{ token: string; sessionName: string }> {
     const resolvedSession = sessionName ?? crypto.randomUUID();
 
-    const env = await this.environmentService.findAll().then(({ data }) => data.find(e => e.name === environmentName));
-    if (!env) throw new NotFoundException(`Environment "${environmentName}" not found`);
+    const env = await this.environmentService
+      .findAll()
+      .then(({ data }) => data.find((e) => e.name === environmentName));
+    if (!env)
+      throw new NotFoundException(`Environment "${environmentName}" not found`);
 
     const loginUrl = env.urls.id_url;
     const cabinetUrl = env.urls.cabinet_url;
-    if (!loginUrl) throw new BadRequestException(`Environment "${environmentName}" is missing id_url`);
-    if (!cabinetUrl) throw new BadRequestException(`Environment "${environmentName}" is missing cabinet_url`);
+    if (!loginUrl)
+      throw new BadRequestException(
+        `Environment "${environmentName}" is missing id_url`,
+      );
+    if (!cabinetUrl)
+      throw new BadRequestException(
+        `Environment "${environmentName}" is missing cabinet_url`,
+      );
 
     const descriptor = this.loadKeyDescriptor(keyId);
     const useLoginPassword = !!descriptor.login;
 
     if (!useLoginPassword) {
       if (!descriptor.keyFile) {
-        throw new BadRequestException(`Key descriptor for "${keyId}" must have either "login" or "keyFile"`);
+        throw new BadRequestException(
+          `Key descriptor for "${keyId}" must have either "login" or "keyFile"`,
+        );
       }
       const keyFilePath = path.resolve(this.keysDir, descriptor.keyFile);
       if (!fs.existsSync(keyFilePath)) {
-        throw new BadRequestException(`Key file not found: ${descriptor.keyFile}`);
+        throw new BadRequestException(
+          `Key file not found: ${descriptor.keyFile}`,
+        );
       }
     }
 
-    const browser = await chromium.launch({ headless: true, executablePath: process.env.PLAYWRIGHT_CHROMIUM_EXECUTABLE_PATH });
+    const browser = await chromium.launch({
+      headless: true,
+      executablePath: process.env.PLAYWRIGHT_CHROMIUM_EXECUTABLE_PATH,
+    });
     try {
       const context = await browser.newContext();
       const page = await context.newPage();
 
       this.logger.log(`Navigating to ${loginUrl}`);
-      await page.goto(loginUrl, { waitUntil: 'networkidle' });
+      await page.goto(loginUrl, { waitUntil: "networkidle" });
 
       if (useLoginPassword) {
         // Click "Логін і пароль" auth method
         await page.locator('p[aria-label="Логін і пароль"]').click();
 
         // Fill login and password
-        await page.getByLabel('Електронна пошта').fill(descriptor.login!);
-        await page.getByLabel('Пароль').fill(descriptor.password);
+        await page.getByLabel("Електронна пошта").fill(descriptor.login!);
+        await page.getByLabel("Пароль").fill(descriptor.password);
 
         // Click "Увійти"
         await page.locator('button:has-text("Увійти")').click();
@@ -100,19 +121,21 @@ export class AuthService {
         const keyFilePath = path.resolve(this.keysDir, descriptor.keyFile!);
 
         // Click "Файловий ключ" button
-        await page.getByText('Файловий ключ').click();
+        await page.getByText("Файловий ключ").click();
 
         // Upload key file via hidden file input
-        const fileInput = page.locator('input[accept=".dat,.pfx,.pk8,.zs2,.jks"][type="file"]');
+        const fileInput = page.locator(
+          'input[accept=".dat,.pfx,.pk8,.zs2,.jks"][type="file"]',
+        );
         await fileInput.setInputFiles(keyFilePath);
 
         // Enter password
         await page
-          .locator('#id-app-login-file-key-password')
+          .locator("#id-app-login-file-key-password")
           .fill(descriptor.password);
 
         // Click "Продовжити"
-        await page.locator('#id-app-login-file-key-sign-button').click();
+        await page.locator("#id-app-login-file-key-sign-button").click();
       }
 
       // Wait until redirected to cabinet
@@ -120,11 +143,11 @@ export class AuthService {
       await page.waitForURL(cabinetUrl, { timeout: 30000 });
 
       // Extract token from localStorage
-      const token = await page.evaluate(() => localStorage.getItem('token'));
+      const token = await page.evaluate(() => localStorage.getItem("token"));
 
       if (!token) {
         throw new InternalServerErrorException(
-          'Login succeeded but token was not found in localStorage',
+          "Login succeeded but token was not found in localStorage",
         );
       }
 
@@ -134,14 +157,21 @@ export class AuthService {
         const entries: Record<string, string> = {};
         for (let i = 0; i < window.localStorage.length; i++) {
           const k = window.localStorage.key(i);
-          if (k !== null) entries[k] = window.localStorage.getItem(k) ?? '';
+          if (k !== null) entries[k] = window.localStorage.getItem(k) ?? "";
         }
         return entries;
       });
 
-      await this.sessionService.upsert(resolvedSession, token, cookies, localStorageData);
+      await this.sessionService.upsert(
+        resolvedSession,
+        token,
+        cookies,
+        localStorageData,
+      );
 
-      this.logger.log(`Login successful for key ${keyId}, session: ${resolvedSession}`);
+      this.logger.log(
+        `Login successful for key ${keyId}, session: ${resolvedSession}`,
+      );
       return { token, sessionName: resolvedSession };
     } catch (err) {
       if (
@@ -164,26 +194,40 @@ export class AuthService {
     const descriptor = this.loadKeyDescriptor(keyId);
 
     if (!descriptor.keyFile) {
-      throw new BadRequestException(`Key descriptor for "${keyId}" must have "keyFile" to sign`);
+      throw new BadRequestException(
+        `Key descriptor for "${keyId}" must have "keyFile" to sign`,
+      );
     }
 
     const keyFilePath = path.resolve(this.keysDir, descriptor.keyFile);
     if (!fs.existsSync(keyFilePath)) {
-      throw new BadRequestException(`Key file not found: ${descriptor.keyFile}`);
+      throw new BadRequestException(
+        `Key file not found: ${descriptor.keyFile}`,
+      );
     }
 
     this.logger.log(`Signing with key ${keyId} on page: ${page.url()}`);
 
     // Open the EDS sign widget
-    await page.locator('button').filter({ hasText: /підпис|sign/i }).first().click();
+    await page
+      .locator("button")
+      .filter({ hasText: /підпис|sign/i })
+      .first()
+      .click();
     await page.waitForTimeout(500);
 
     // Select the file key tab inside the widget
-    await page.locator('button, [role="tab"], li').filter({ hasText: /файлов|file key/i }).first().click();
+    await page
+      .locator('button, [role="tab"], li')
+      .filter({ hasText: /файлов|file key/i })
+      .first()
+      .click();
     await page.waitForTimeout(300);
 
     // Upload the key file
-    const fileInput = page.locator('input[accept=".dat,.pfx,.pk8,.zs2,.jks"][type="file"]');
+    const fileInput = page.locator(
+      'input[accept=".dat,.pfx,.pk8,.zs2,.jks"][type="file"]',
+    );
     await fileInput.setInputFiles(keyFilePath);
     await page.waitForTimeout(300);
 
@@ -192,8 +236,12 @@ export class AuthService {
     await page.waitForTimeout(200);
 
     // Submit
-    await page.locator('button').filter({ hasText: /підпис|sign|підтвер/i }).last().click();
-    await page.waitForLoadState('networkidle');
+    await page
+      .locator("button")
+      .filter({ hasText: /підпис|sign|підтвер/i })
+      .last()
+      .click();
+    await page.waitForLoadState("networkidle");
 
     this.logger.log(`Sign completed for key ${keyId}`);
   }
diff --git a/src/auth/dto/login.dto.ts b/src/auth/dto/login.dto.ts
index ade399b..df85e55 100644
--- a/src/auth/dto/login.dto.ts
+++ b/src/auth/dto/login.dto.ts
@@ -1,26 +1,28 @@
-import { ApiProperty, ApiPropertyOptional } from '@nestjs/swagger';
-import { IsNotEmpty, IsOptional, IsString } from 'class-validator';
+import { ApiProperty, ApiPropertyOptional } from "@nestjs/swagger";
+import { IsNotEmpty, IsOptional, IsString } from "class-validator";
 
 export class LoginDto {
   @ApiProperty({
-    description: 'Key identifier — filename (without extension) from the keys/ directory',
-    example: '3273334361',
+    description:
+      "Key identifier — filename (without extension) from the keys/ directory",
+    example: "3273334361",
   })
   @IsString()
   @IsNotEmpty()
   key: string;
 
   @ApiProperty({
-    description: 'Environment name to resolve login/cabinet URLs from',
-    example: 'liquio-diia-stg',
+    description: "Environment name to resolve login/cabinet URLs from",
+    example: "liquio-diia-stg",
   })
   @IsString()
   @IsNotEmpty()
   environmentName: string;
 
   @ApiPropertyOptional({
-    description: 'Session name to store credentials under. Auto-generated UUID if omitted.',
-    example: 'my-test-session',
+    description:
+      "Session name to store credentials under. Auto-generated UUID if omitted.",
+    example: "my-test-session",
   })
   @IsOptional()
   @IsString()
diff --git a/src/browser/browser.controller.ts b/src/browser/browser.controller.ts
index 90b0521..7a48d14 100644
--- a/src/browser/browser.controller.ts
+++ b/src/browser/browser.controller.ts
@@ -1,11 +1,11 @@
-import { Body, Controller, Post } from '@nestjs/common';
-import { ApiOperation, ApiResponse, ApiTags } from '@nestjs/swagger';
-import { BrowserService, ExecResult, OpenResult } from './browser.service';
-import { CodeExecutorService } from '../code-executor/code-executor.service';
-import { OpenDto } from './dto/open.dto';
-import { ExecDto } from './dto/exec.dto';
+import { Body, Controller, Post } from "@nestjs/common";
+import { ApiOperation, ApiResponse, ApiTags } from "@nestjs/swagger";
+import { BrowserService, ExecResult, OpenResult } from "./browser.service";
+import { CodeExecutorService } from "../code-executor/code-executor.service";
+import { OpenDto } from "./dto/open.dto";
+import { ExecDto } from "./dto/exec.dto";
 
-@ApiTags('browser')
+@ApiTags("browser")
 @Controller()
 export class BrowserController {
   constructor(
@@ -13,39 +13,47 @@ export class BrowserController {
     private readonly codeExecutor: CodeExecutorService,
   ) {}
 
-  @Post('open')
-  @ApiOperation({ summary: 'Open a URL with a stored session (cookies + localStorage)' })
+  @Post("open")
+  @ApiOperation({
+    summary: "Open a URL with a stored session (cookies + localStorage)",
+  })
   @ApiResponse({
     status: 201,
-    description: 'Page loaded successfully',
+    description: "Page loaded successfully",
     schema: {
       properties: {
-        url: { type: 'string' },
-        title: { type: 'string' },
-        content: { type: 'string' },
+        url: { type: "string" },
+        title: { type: "string" },
+        content: { type: "string" },
       },
     },
   })
-  @ApiResponse({ status: 400, description: 'Invalid input' })
-  @ApiResponse({ status: 404, description: 'Session not found' })
-  @ApiResponse({ status: 500, description: 'Browser automation failed' })
+  @ApiResponse({ status: 400, description: "Invalid input" })
+  @ApiResponse({ status: 404, description: "Session not found" })
+  @ApiResponse({ status: 500, description: "Browser automation failed" })
   open(@Body() dto: OpenDto): Promise<OpenResult> {
-    return this.browserService.open(dto.sessionName, dto.url, dto.readerMode ?? false, dto.selector);
+    return this.browserService.open(
+      dto.sessionName,
+      dto.url,
+      dto.readerMode ?? false,
+      dto.selector,
+    );
   }
 
-  @Post('exec')
+  @Post("exec")
   @ApiOperation({
-    summary: 'Execute custom Playwright JavaScript within a stored session',
-    description: 'The `code` string is executed as an async function body with `page` (Playwright Page) and `context` (BrowserContext) in scope. The return value is serialised and returned as `result`.',
+    summary: "Execute custom Playwright JavaScript within a stored session",
+    description:
+      "The `code` string is executed as an async function body with `page` (Playwright Page) and `context` (BrowserContext) in scope. The return value is serialised and returned as `result`.",
   })
   @ApiResponse({
     status: 201,
-    description: 'Code executed successfully',
+    description: "Code executed successfully",
     schema: { properties: { result: {} } },
   })
-  @ApiResponse({ status: 400, description: 'Invalid input' })
-  @ApiResponse({ status: 404, description: 'Session not found' })
-  @ApiResponse({ status: 500, description: 'Execution failed' })
+  @ApiResponse({ status: 400, description: "Invalid input" })
+  @ApiResponse({ status: 404, description: "Session not found" })
+  @ApiResponse({ status: 500, description: "Execution failed" })
   exec(@Body() dto: ExecDto): Promise<ExecResult> {
     this.codeExecutor.validate(dto.code);
     return this.browserService.exec(dto.sessionName, dto.code, dto.url);
diff --git a/src/browser/browser.module.ts b/src/browser/browser.module.ts
index 9db3ccd..7e1ea3c 100644
--- a/src/browser/browser.module.ts
+++ b/src/browser/browser.module.ts
@@ -1,8 +1,8 @@
-import { Module } from '@nestjs/common';
-import { BrowserController } from './browser.controller';
-import { BrowserService } from './browser.service';
-import { SessionModule } from '../session/session.module';
-import { CodeExecutorModule } from '../code-executor/code-executor.module';
+import { Module } from "@nestjs/common";
+import { BrowserController } from "./browser.controller";
+import { BrowserService } from "./browser.service";
+import { SessionModule } from "../session/session.module";
+import { CodeExecutorModule } from "../code-executor/code-executor.module";
 
 @Module({
   imports: [SessionModule, CodeExecutorModule],
diff --git a/src/browser/browser.service.ts b/src/browser/browser.service.ts
index 9de2441..14bacf9 100644
--- a/src/browser/browser.service.ts
+++ b/src/browser/browser.service.ts
@@ -3,17 +3,17 @@ import {
   HttpException,
   InternalServerErrorException,
   NotFoundException,
-} from '@nestjs/common';
-import { TraceLogger } from '../common/trace-logger';
-import { chromium } from 'playwright';
-import type { BrowserContext } from 'playwright';
-import { Readability } from '@mozilla/readability';
-import { JSDOM } from 'jsdom';
-import { SessionService } from '../session/session.service';
-import { CodeExecutorService } from '../code-executor/code-executor.service';
-import type { ExecResult } from '../code-executor/code-executor.service';
+} from "@nestjs/common";
+import { TraceLogger } from "../common/trace-logger";
+import { chromium } from "playwright";
+import type { BrowserContext, Cookie } from "playwright";
+import { Readability } from "@mozilla/readability";
+import { JSDOM } from "jsdom";
+import { SessionService } from "../session/session.service";
+import { CodeExecutorService } from "../code-executor/code-executor.service";
+import type { ExecResult } from "../code-executor/code-executor.service";
 
-export type { ExecResult } from '../code-executor/code-executor.service';
+export type { ExecResult } from "../code-executor/code-executor.service";
 
 export interface OpenResult {
   url: string;
@@ -30,19 +30,25 @@ export class BrowserService {
     private readonly codeExecutor: CodeExecutorService,
   ) {}
 
-  private async setupSession(context: BrowserContext, sessionName: string | undefined): Promise<void> {
+  private async setupSession(
+    context: BrowserContext,
+    sessionName: string | undefined,
+  ): Promise<void> {
     if (!sessionName) return;
     const session = await this.sessionService.findBySessionName(sessionName);
     if (!session) {
       throw new NotFoundException(`Session not found: ${sessionName}`);
     }
-    let cookies: any[];
+    let cookies: Cookie[];
     let localStorageData: Record<string, string>;
     try {
       cookies = JSON.parse(session.cookies);
       localStorageData = JSON.parse(session.localStorage);
     } catch (err) {
-      throw new InternalServerErrorException('Failed to deserialize session data', { cause: err });
+      throw new InternalServerErrorException(
+        "Failed to deserialize session data",
+        { cause: err },
+      );
     }
     await context.addCookies(cookies);
     await context.addInitScript((entries: Record<string, string>) => {
@@ -62,16 +68,24 @@ export class BrowserService {
     );
   }
 
-  async open(sessionName: string | undefined, url: string, readerMode = false, selector?: string): Promise<OpenResult> {
-    const label = sessionName ?? 'anonymous';
-    const browser = await chromium.launch({ headless: true, executablePath: process.env.PLAYWRIGHT_CHROMIUM_EXECUTABLE_PATH });
+  async open(
+    sessionName: string | undefined,
+    url: string,
+    readerMode = false,
+    selector?: string,
+  ): Promise<OpenResult> {
+    const label = sessionName ?? "anonymous";
+    const browser = await chromium.launch({
+      headless: true,
+      executablePath: process.env.PLAYWRIGHT_CHROMIUM_EXECUTABLE_PATH,
+    });
     try {
       const context = await browser.newContext();
       await this.setupSession(context, sessionName);
       const page = await context.newPage();
 
       this.logger.log(`[${label}] Opening ${url}`);
-      await page.goto(url, { waitUntil: 'networkidle' });
+      await page.goto(url, { waitUntil: "networkidle" });
 
       const finalUrl = page.url();
       const title = await page.title();
@@ -82,28 +96,39 @@ export class BrowserService {
         const dom = new JSDOM(rawHtml, { url: finalUrl });
         const el = dom.window.document.querySelector(selector);
         content = readerMode
-          ? (el?.textContent?.replace(/\s+/g, ' ').trim() ?? '')
-          : (el?.outerHTML ?? '');
+          ? (el?.textContent?.replace(/\s+/g, " ").trim() ?? "")
+          : (el?.outerHTML ?? "");
       } else if (readerMode) {
         const dom = new JSDOM(rawHtml, { url: finalUrl });
         const article = new Readability(dom.window.document).parse();
-        content = article ? article.textContent.replace(/\s+/g, ' ').trim() : rawHtml;
+        content = article
+          ? article.textContent.replace(/\s+/g, " ").trim()
+          : rawHtml;
       } else {
         content = rawHtml;
       }
 
-      this.logger.log(`[${label}] Loaded: ${finalUrl} — "${title}"${readerMode ? ' (reader mode)' : ''}${selector ? ` (selector: ${selector})` : ''}`);
+      this.logger.log(
+        `[${label}] Loaded: ${finalUrl} — "${title}"${readerMode ? " (reader mode)" : ""}${selector ? ` (selector: ${selector})` : ""}`,
+      );
       return { url: finalUrl, title, content };
     } catch (err) {
-      this.rethrow(err, label, 'open');
+      this.rethrow(err, label, "open");
     } finally {
       await browser.close();
     }
   }
 
-  async exec(sessionName: string | undefined, code: string, url?: string): Promise<ExecResult> {
-    const label = sessionName ?? 'anonymous';
-    const browser = await chromium.launch({ headless: true, executablePath: process.env.PLAYWRIGHT_CHROMIUM_EXECUTABLE_PATH });
+  async exec(
+    sessionName: string | undefined,
+    code: string,
+    url?: string,
+  ): Promise<ExecResult> {
+    const label = sessionName ?? "anonymous";
+    const browser = await chromium.launch({
+      headless: true,
+      executablePath: process.env.PLAYWRIGHT_CHROMIUM_EXECUTABLE_PATH,
+    });
     try {
       const context = await browser.newContext();
       await this.setupSession(context, sessionName);
@@ -111,7 +136,7 @@ export class BrowserService {
 
       if (url) {
         this.logger.log(`[${label}] exec: navigating to ${url}`);
-        await page.goto(url, { waitUntil: 'networkidle' });
+        await page.goto(url, { waitUntil: "networkidle" });
       }
 
       this.logger.log(`[${label}] exec: running user code`);
@@ -120,7 +145,7 @@ export class BrowserService {
       this.logger.log(`[${label}] exec: done`);
       return result;
     } catch (err) {
-      this.rethrow(err, label, 'exec');
+      this.rethrow(err, label, "exec");
     } finally {
       await browser.close();
     }
diff --git a/src/browser/dto/exec.dto.ts b/src/browser/dto/exec.dto.ts
index 36355c0..2109bbc 100644
--- a/src/browser/dto/exec.dto.ts
+++ b/src/browser/dto/exec.dto.ts
@@ -1,26 +1,29 @@
-import { ApiProperty, ApiPropertyOptional } from '@nestjs/swagger';
-import { IsOptional, IsString, IsUrl } from 'class-validator';
+import { ApiProperty, ApiPropertyOptional } from "@nestjs/swagger";
+import { IsOptional, IsString, IsUrl } from "class-validator";
 
 export class ExecDto {
   @ApiPropertyOptional({
-    description: 'Session name previously created by POST /login. If omitted, executes without a stored session.',
-    example: 'test-session-1',
+    description:
+      "Session name previously created by POST /login. If omitted, executes without a stored session.",
+    example: "test-session-1",
   })
   @IsOptional()
   @IsString()
   sessionName?: string;
 
   @ApiPropertyOptional({
-    description: 'URL to navigate to before executing code. Skipped if omitted.',
-    example: 'https://cabinet-liquio-diia-stg.kitsoft.ua/messages',
+    description:
+      "URL to navigate to before executing code. Skipped if omitted.",
+    example: "https://cabinet-liquio-diia-stg.kitsoft.ua/messages",
   })
   @IsOptional()
   @IsUrl({ require_tld: true, require_protocol: true })
   url?: string;
 
   @ApiProperty({
-    description: 'JavaScript code to execute. Receives `page` (Playwright Page) and `context` (BrowserContext) as arguments. May be async. Return value is serialised and returned.',
-    example: 'return await page.title();',
+    description:
+      "JavaScript code to execute. Receives `page` (Playwright Page) and `context` (BrowserContext) as arguments. May be async. Return value is serialised and returned.",
+    example: "return await page.title();",
   })
   @IsString()
   code: string;
diff --git a/src/browser/dto/open.dto.ts b/src/browser/dto/open.dto.ts
index 3a013da..e571b06 100644
--- a/src/browser/dto/open.dto.ts
+++ b/src/browser/dto/open.dto.ts
@@ -1,24 +1,26 @@
-import { ApiProperty, ApiPropertyOptional } from '@nestjs/swagger';
-import { IsBoolean, IsOptional, IsString, IsUrl } from 'class-validator';
+import { ApiProperty, ApiPropertyOptional } from "@nestjs/swagger";
+import { IsBoolean, IsOptional, IsString, IsUrl } from "class-validator";
 
 export class OpenDto {
   @ApiPropertyOptional({
-    description: 'Session name previously created by POST /login. If omitted, opens the URL without a stored session.',
-    example: 'test-session-1',
+    description:
+      "Session name previously created by POST /login. If omitted, opens the URL without a stored session.",
+    example: "test-session-1",
   })
   @IsOptional()
   @IsString()
   sessionName?: string;
 
   @ApiProperty({
-    description: 'URL to open with the authenticated session',
-    example: 'https://cabinet-liquio-diia-stg.kitsoft.ua/messages',
+    description: "URL to open with the authenticated session",
+    example: "https://cabinet-liquio-diia-stg.kitsoft.ua/messages",
   })
   @IsUrl({ require_tld: true, require_protocol: true })
   url: string;
 
   @ApiPropertyOptional({
-    description: 'When true, return a plain-text reader-mode summary instead of raw HTML',
+    description:
+      "When true, return a plain-text reader-mode summary instead of raw HTML",
     default: false,
   })
   @IsOptional()
@@ -26,8 +28,9 @@ export class OpenDto {
   readerMode?: boolean;
 
   @ApiPropertyOptional({
-    description: 'CSS selector whose matching element content is returned. When omitted the full page HTML is used.',
-    example: '#main-content',
+    description:
+      "CSS selector whose matching element content is returned. When omitted the full page HTML is used.",
+    example: "#main-content",
   })
   @IsOptional()
   @IsString()
diff --git a/src/code-executor/code-executor.module.ts b/src/code-executor/code-executor.module.ts
index 0b10a60..c438182 100644
--- a/src/code-executor/code-executor.module.ts
+++ b/src/code-executor/code-executor.module.ts
@@ -1,5 +1,5 @@
-import { Module } from '@nestjs/common';
-import { CodeExecutorService } from './code-executor.service';
+import { Module } from "@nestjs/common";
+import { CodeExecutorService } from "./code-executor.service";
 
 @Module({
   providers: [CodeExecutorService],
diff --git a/src/code-executor/code-executor.service.ts b/src/code-executor/code-executor.service.ts
index a5d8f86..810f3c1 100644
--- a/src/code-executor/code-executor.service.ts
+++ b/src/code-executor/code-executor.service.ts
@@ -1,14 +1,21 @@
-import { BadRequestException, Injectable, InternalServerErrorException } from '@nestjs/common';
-import { TraceLogger } from '../common/trace-logger';
-import { parse } from 'acorn';
-import type { Page, BrowserContext } from 'playwright';
-import { dumpDom } from './dom-helpers';
+import {
+  BadRequestException,
+  Injectable,
+  InternalServerErrorException,
+} from "@nestjs/common";
+import { TraceLogger } from "../common/trace-logger";
+import { parse } from "acorn";
+import type { Page, BrowserContext } from "playwright";
+import { dumpDom } from "./dom-helpers";
 
 export interface ExecResult {
   result: unknown;
 }
 
-export type ScriptLogger = (level: 'log' | 'warn' | 'error', message: string) => void;
+export type ScriptLogger = (
+  level: "log" | "warn" | "error",
+  message: string,
+) => void;
 
 @Injectable()
 export class CodeExecutorService {
@@ -23,7 +30,10 @@ export class CodeExecutorService {
     try {
       parse(wrapped, { ecmaVersion: 2022 });
     } catch (err) {
-      throw new BadRequestException(`Code parse error: ${(err as Error).message}`, { cause: err });
+      throw new BadRequestException(
+        `Code parse error: ${(err as Error).message}`,
+        { cause: err },
+      );
     }
   }
 
@@ -31,34 +41,51 @@ export class CodeExecutorService {
    * Executes `code` as an async function body with `page` and `context` in
    * scope. Always call `validate()` before this method.
    */
-  async execute(page: Page, context: BrowserContext, code: string, log?: ScriptLogger): Promise<ExecResult> {
-    const scriptLog: ScriptLogger = log ?? ((level, msg) => this.logger[level](msg));
-    const toStr = (args: unknown[]) => args.map((a) => (typeof a === 'object' ? JSON.stringify(a) : String(a))).join(' ');
+  async execute(
+    page: Page,
+    context: BrowserContext,
+    code: string,
+    log?: ScriptLogger,
+  ): Promise<ExecResult> {
+    const scriptLog: ScriptLogger =
+      log ?? ((level, msg) => this.logger[level](msg));
+    const toStr = (args: unknown[]) =>
+      args
+        .map((a) => (typeof a === "object" ? JSON.stringify(a) : String(a)))
+        .join(" ");
 
     try {
       const pageHelpers = {
         dumpDom: (selector?: string) => dumpDom(page, selector),
-        log:   (...args: unknown[]) => scriptLog('log',   toStr(args)),
-        warn:  (...args: unknown[]) => scriptLog('warn',  toStr(args)),
-        error: (...args: unknown[]) => scriptLog('error', toStr(args)),
+        log: (...args: unknown[]) => scriptLog("log", toStr(args)),
+        warn: (...args: unknown[]) => scriptLog("warn", toStr(args)),
+        error: (...args: unknown[]) => scriptLog("error", toStr(args)),
       };
 
       const fakeConsole = {
-        log:   (...args: unknown[]) => scriptLog('log',   toStr(args)),
-        warn:  (...args: unknown[]) => scriptLog('warn',  toStr(args)),
-        error: (...args: unknown[]) => scriptLog('error', toStr(args)),
-        info:  (...args: unknown[]) => scriptLog('log',   toStr(args)),
-        debug: (...args: unknown[]) => scriptLog('log',   toStr(args)),
+        log: (...args: unknown[]) => scriptLog("log", toStr(args)),
+        warn: (...args: unknown[]) => scriptLog("warn", toStr(args)),
+        error: (...args: unknown[]) => scriptLog("error", toStr(args)),
+        info: (...args: unknown[]) => scriptLog("log", toStr(args)),
+        debug: (...args: unknown[]) => scriptLog("log", toStr(args)),
       };
 
       // Passing `console` as a named parameter shadows the global in the script scope.
-      // eslint-disable-next-line no-new-func
-      const fn = new Function('page', 'context', 'helpers', 'console', `return (async (page, context, helpers) => { ${code} })(page, context, helpers)`);
-      this.logger.debug('Executing user code');
+      const fn = new Function(
+        "page",
+        "context",
+        "helpers",
+        "console",
+        `return (async (page, context, helpers) => { ${code} })(page, context, helpers)`,
+      );
+      this.logger.debug("Executing user code");
       const result = await fn(page, context, pageHelpers, fakeConsole);
       return { result };
     } catch (err) {
-      throw new InternalServerErrorException(`Code execution failed: ${(err as Error).message}`, { cause: err });
+      throw new InternalServerErrorException(
+        `Code execution failed: ${(err as Error).message}`,
+        { cause: err },
+      );
     }
   }
 }
diff --git a/src/code-executor/dom-helpers.ts b/src/code-executor/dom-helpers.ts
index f90c4be..da1dcbb 100644
--- a/src/code-executor/dom-helpers.ts
+++ b/src/code-executor/dom-helpers.ts
@@ -1,4 +1,4 @@
-import type { Page } from 'playwright';
+import type { Page } from "playwright";
 
 export interface DomNode {
   tag: string;
@@ -26,50 +26,99 @@ export interface DomNode {
  *
  * Useful for debugging Playwright selectors without screenshotting.
  */
-export async function dumpDom(page: Page, rootSelector = 'body'): Promise<DomNode> {
+export async function dumpDom(
+  page: Page,
+  rootSelector = "body",
+): Promise<DomNode> {
   return page.evaluate(
     ([sel, maxDepth]) => {
       const root = document.querySelector(sel as string);
-      if (!root) return { tag: 'ERROR', text: `selector not found: ${sel}`, children: [] };
+      if (!root)
+        return {
+          tag: "ERROR",
+          text: `selector not found: ${sel}`,
+          children: [],
+        };
 
       const STRUCTURAL_TAGS = new Set([
-        'BODY', 'MAIN', 'HEADER', 'FOOTER', 'NAV', 'ASIDE', 'SECTION',
-        'FORM', 'DIALOG', 'DETAILS', 'SUMMARY', 'TABLE', 'THEAD', 'TBODY',
-        'TR', 'FIELDSET', 'LEGEND',
+        "BODY",
+        "MAIN",
+        "HEADER",
+        "FOOTER",
+        "NAV",
+        "ASIDE",
+        "SECTION",
+        "FORM",
+        "DIALOG",
+        "DETAILS",
+        "SUMMARY",
+        "TABLE",
+        "THEAD",
+        "TBODY",
+        "TR",
+        "FIELDSET",
+        "LEGEND",
       ]);
 
       const INTERACTIVE_TAGS = new Set([
-        'A', 'BUTTON', 'INPUT', 'SELECT', 'TEXTAREA', 'LABEL',
-        'TH', 'TD',
+        "A",
+        "BUTTON",
+        "INPUT",
+        "SELECT",
+        "TEXTAREA",
+        "LABEL",
+        "TH",
+        "TD",
       ]);
 
-      const IGNORED_TAGS = new Set(['SCRIPT', 'STYLE', 'SVG', 'PATH', 'DEFS', 'USE', 'CIRCLE', 'RECT', 'POLYGON', 'POLYLINE', 'LINE', 'ELLIPSE', 'G', 'CLIPPATH', 'IMAGE']);
+      const IGNORED_TAGS = new Set([
+        "SCRIPT",
+        "STYLE",
+        "SVG",
+        "PATH",
+        "DEFS",
+        "USE",
+        "CIRCLE",
+        "RECT",
+        "POLYGON",
+        "POLYLINE",
+        "LINE",
+        "ELLIPSE",
+        "G",
+        "CLIPPATH",
+        "IMAGE",
+      ]);
 
       function trimText(el: Element): string | undefined {
-        const t = (el as HTMLElement).innerText?.trim() ?? el.textContent?.trim() ?? '';
+        const t =
+          (el as HTMLElement).innerText?.trim() ?? el.textContent?.trim() ?? "";
         // Only include if short enough to be meaningful, not a dump of all child text
         const ownText = Array.from(el.childNodes)
-          .filter(n => n.nodeType === Node.TEXT_NODE)
-          .map(n => n.textContent?.trim() ?? '')
+          .filter((n) => n.nodeType === Node.TEXT_NODE)
+          .map((n) => n.textContent?.trim() ?? "")
           .filter(Boolean)
-          .join(' ');
+          .join(" ");
         const candidate = ownText || t;
         return candidate.length > 0 ? candidate.substring(0, 80) : undefined;
       }
 
       function isVisible(el: Element): boolean {
         const s = window.getComputedStyle(el);
-        return s.display !== 'none' && s.visibility !== 'hidden' && (el as HTMLElement).offsetParent !== null;
+        return (
+          s.display !== "none" &&
+          s.visibility !== "hidden" &&
+          (el as HTMLElement).offsetParent !== null
+        );
       }
 
       function isSignificant(el: Element): boolean {
         if (STRUCTURAL_TAGS.has(el.tagName)) return true;
         if (INTERACTIVE_TAGS.has(el.tagName)) return true;
-        if (el.getAttribute('role')) return true;
-        if (el.getAttribute('data-testid')) return true;
-        if (el.getAttribute('data-qa')) return true;
-        if (el.getAttribute('data-action')) return true;
-        if (el.getAttribute('data-element-id')) return true;
+        if (el.getAttribute("role")) return true;
+        if (el.getAttribute("data-testid")) return true;
+        if (el.getAttribute("data-qa")) return true;
+        if (el.getAttribute("data-action")) return true;
+        if (el.getAttribute("data-element-id")) return true;
         return false;
       }
 
@@ -98,41 +147,44 @@ export async function dumpDom(page: Page, rootSelector = 'body'): Promise<DomNod
         if (!significant && childResults.length === 1) return childResults[0];
 
         // If not significant but has children, keep as anonymous group only if > 1 child
-        if (!significant) return { tag: el.tagName.toLowerCase(), children: childResults };
+        if (!significant)
+          return { tag: el.tagName.toLowerCase(), children: childResults };
 
         const node: DomNode = {
           tag: el.tagName.toLowerCase(),
           children: childResults,
         };
 
-        const role = el.getAttribute('role');
+        const role = el.getAttribute("role");
         if (role) node.role = role;
 
-        const testid = el.getAttribute('data-testid');
+        const testid = el.getAttribute("data-testid");
         if (testid) node.testid = testid;
 
-        const qa = el.getAttribute('data-qa');
+        const qa = el.getAttribute("data-qa");
         if (qa) node.qa = qa;
 
-        const action = el.getAttribute('data-action');
+        const action = el.getAttribute("data-action");
         if (action) node.action = action;
 
-        const elementId = el.getAttribute('data-element-id');
+        const elementId = el.getAttribute("data-element-id");
         if (elementId) node.elementId = elementId;
 
         const id = el.id;
         if (id) node.id = id;
 
         const type = (el as HTMLInputElement).type;
-        if (type && type !== 'submit' && el.tagName !== 'BUTTON') node.type = type;
+        if (type && type !== "submit" && el.tagName !== "BUTTON")
+          node.type = type;
 
         const name = (el as HTMLInputElement).name;
         if (name) node.name = name;
 
         const href = (el as HTMLAnchorElement).href;
-        if (href && el.tagName === 'A') node.href = href.replace(window.location.origin, '');
+        if (href && el.tagName === "A")
+          node.href = href.replace(window.location.origin, "");
 
-        if ('checked' in el) node.checked = (el as HTMLInputElement).checked;
+        if ("checked" in el) node.checked = (el as HTMLInputElement).checked;
         if ((el as HTMLButtonElement).disabled) node.disabled = true;
 
         const text = trimText(el);
@@ -142,7 +194,7 @@ export async function dumpDom(page: Page, rootSelector = 'body'): Promise<DomNod
       }
 
       const result = build(root, 0);
-      return result ?? { tag: 'empty', children: [] };
+      return result ?? { tag: "empty", children: [] };
     },
     [rootSelector, 12] as [string, number],
   );
diff --git a/src/common/dto/pagination.dto.ts b/src/common/dto/pagination.dto.ts
index aca6261..9f7860e 100644
--- a/src/common/dto/pagination.dto.ts
+++ b/src/common/dto/pagination.dto.ts
@@ -1,6 +1,6 @@
-import { ApiPropertyOptional } from '@nestjs/swagger';
-import { Type } from 'class-transformer';
-import { IsIn, IsInt, IsOptional, IsString, Min } from 'class-validator';
+import { ApiPropertyOptional } from "@nestjs/swagger";
+import { Type } from "class-transformer";
+import { IsIn, IsInt, IsOptional, IsString, Min } from "class-validator";
 
 export class PaginationQueryDto<TOrderBy extends string = string> {
   @ApiPropertyOptional({ example: 1, default: 1 })
@@ -17,15 +17,19 @@ export class PaginationQueryDto<TOrderBy extends string = string> {
   @Min(1)
   limit?: number = 20;
 
-  @ApiPropertyOptional({ example: 'id', default: 'id', description: 'Field to order by' })
+  @ApiPropertyOptional({
+    example: "id",
+    default: "id",
+    description: "Field to order by",
+  })
   @IsOptional()
   @IsString()
   orderBy?: TOrderBy;
 
-  @ApiPropertyOptional({ enum: ['ASC', 'DESC'], default: 'ASC' })
+  @ApiPropertyOptional({ enum: ["ASC", "DESC"], default: "ASC" })
   @IsOptional()
-  @IsIn(['ASC', 'DESC'])
-  orderDir?: 'ASC' | 'DESC' = 'ASC';
+  @IsIn(["ASC", "DESC"])
+  orderDir?: "ASC" | "DESC" = "ASC";
 }
 
 export interface PaginatedResult<T> {
diff --git a/src/common/trace-context.ts b/src/common/trace-context.ts
index 25ec747..b794db8 100644
--- a/src/common/trace-context.ts
+++ b/src/common/trace-context.ts
@@ -1,4 +1,4 @@
-import { AsyncLocalStorage } from 'async_hooks';
+import { AsyncLocalStorage } from "async_hooks";
 
 export interface TraceStore {
   traceId: string;
diff --git a/src/common/trace-logger.ts b/src/common/trace-logger.ts
index a356ba9..e27980e 100644
--- a/src/common/trace-logger.ts
+++ b/src/common/trace-logger.ts
@@ -1,5 +1,5 @@
-import { ConsoleLogger, ConsoleLoggerOptions, LogLevel } from '@nestjs/common';
-import { getTraceId } from './trace-context';
+import { ConsoleLogger, ConsoleLoggerOptions, LogLevel } from "@nestjs/common";
+import { getTraceId } from "./trace-context";
 
 export class TraceLogger extends ConsoleLogger {
   constructor(context?: string, options: ConsoleLoggerOptions = {}) {
diff --git a/src/config/app.config.ts b/src/config/app.config.ts
index 32969c9..785d9c1 100644
--- a/src/config/app.config.ts
+++ b/src/config/app.config.ts
@@ -1,10 +1,10 @@
-import { IsInt, IsString, Min, Max } from 'class-validator';
+import { IsInt, IsString, Min, Max } from "class-validator";
 
-import pkg from '../../package.json';
+import pkg from "../../package.json";
 
 export class AppConfig {
   @IsString()
-  NODE_ENV: string = 'development';
+  NODE_ENV: string = "development";
 
   @IsInt()
   @Min(1)
diff --git a/src/environment/dto/create-environment.dto.ts b/src/environment/dto/create-environment.dto.ts
index 37915d8..b356001 100644
--- a/src/environment/dto/create-environment.dto.ts
+++ b/src/environment/dto/create-environment.dto.ts
@@ -1,19 +1,19 @@
-import { ApiProperty } from '@nestjs/swagger';
-import { IsNotEmpty, IsObject, IsString } from 'class-validator';
-import { EnvironmentUrls } from '../environment.entity';
+import { ApiProperty } from "@nestjs/swagger";
+import { IsNotEmpty, IsObject, IsString } from "class-validator";
+import { EnvironmentUrls } from "../environment.entity";
 
 export class CreateEnvironmentDto {
-  @ApiProperty({ example: 'liquio-diia-stg' })
+  @ApiProperty({ example: "liquio-diia-stg" })
   @IsString()
   @IsNotEmpty()
   name: string;
 
   @ApiProperty({
-    description: 'Map of URL identifiers to URL strings',
+    description: "Map of URL identifiers to URL strings",
     example: {
-      id_url: 'https://id-liquio-diia-stg.kitsoft.ua/',
-      cabinet_url: 'https://cabinet-liquio-diia-stg.kitsoft.ua/',
-      admin_url: 'https://admin-liquio-diia-stg.kitsoft.ua/',
+      id_url: "https://id-liquio-diia-stg.kitsoft.ua/",
+      cabinet_url: "https://cabinet-liquio-diia-stg.kitsoft.ua/",
+      admin_url: "https://admin-liquio-diia-stg.kitsoft.ua/",
     },
   })
   @IsObject()
diff --git a/src/environment/dto/update-environment.dto.ts b/src/environment/dto/update-environment.dto.ts
index 8cab80b..243b877 100644
--- a/src/environment/dto/update-environment.dto.ts
+++ b/src/environment/dto/update-environment.dto.ts
@@ -1,4 +1,4 @@
-import { PartialType } from '@nestjs/swagger';
-import { CreateEnvironmentDto } from './create-environment.dto';
+import { PartialType } from "@nestjs/swagger";
+import { CreateEnvironmentDto } from "./create-environment.dto";
 
 export class UpdateEnvironmentDto extends PartialType(CreateEnvironmentDto) {}
diff --git a/src/environment/environment.controller.ts b/src/environment/environment.controller.ts
index 7acfe87..70849fa 100644
--- a/src/environment/environment.controller.ts
+++ b/src/environment/environment.controller.ts
@@ -9,56 +9,59 @@ import {
   Patch,
   Post,
   Query,
-} from '@nestjs/common';
-import { ApiOperation, ApiResponse, ApiTags } from '@nestjs/swagger';
-import { EnvironmentService } from './environment.service';
-import { CreateEnvironmentDto } from './dto/create-environment.dto';
-import { UpdateEnvironmentDto } from './dto/update-environment.dto';
-import { PaginationQueryDto } from '../common/dto/pagination.dto';
-import { EnvironmentOrderBy } from './environment.service';
+} from "@nestjs/common";
+import { ApiOperation, ApiResponse, ApiTags } from "@nestjs/swagger";
+import { EnvironmentService } from "./environment.service";
+import { CreateEnvironmentDto } from "./dto/create-environment.dto";
+import { UpdateEnvironmentDto } from "./dto/update-environment.dto";
+import { PaginationQueryDto } from "../common/dto/pagination.dto";
+import { EnvironmentOrderBy } from "./environment.service";
 
-@ApiTags('environments')
-@Controller('environments')
+@ApiTags("environments")
+@Controller("environments")
 export class EnvironmentController {
   constructor(private readonly environmentService: EnvironmentService) {}
 
   @Post()
-  @ApiOperation({ summary: 'Create a new environment' })
-  @ApiResponse({ status: 201, description: 'Environment created' })
-  @ApiResponse({ status: 409, description: 'Environment name already exists' })
+  @ApiOperation({ summary: "Create a new environment" })
+  @ApiResponse({ status: 201, description: "Environment created" })
+  @ApiResponse({ status: 409, description: "Environment name already exists" })
   create(@Body() dto: CreateEnvironmentDto) {
     return this.environmentService.create(dto);
   }
 
   @Get()
-  @ApiOperation({ summary: 'List all environments (paginated)' })
-  @ApiResponse({ status: 200, description: 'Paginated environments' })
+  @ApiOperation({ summary: "List all environments (paginated)" })
+  @ApiResponse({ status: 200, description: "Paginated environments" })
   findAll(@Query() query: PaginationQueryDto<EnvironmentOrderBy>) {
     return this.environmentService.findAll(query);
   }
 
-  @Get(':id')
-  @ApiOperation({ summary: 'Get environment by ID' })
-  @ApiResponse({ status: 200, description: 'Environment record' })
-  @ApiResponse({ status: 404, description: 'Environment not found' })
-  findOne(@Param('id', ParseIntPipe) id: number) {
+  @Get(":id")
+  @ApiOperation({ summary: "Get environment by ID" })
+  @ApiResponse({ status: 200, description: "Environment record" })
+  @ApiResponse({ status: 404, description: "Environment not found" })
+  findOne(@Param("id", ParseIntPipe) id: number) {
     return this.environmentService.findOne(id);
   }
 
-  @Patch(':id')
-  @ApiOperation({ summary: 'Update an environment' })
-  @ApiResponse({ status: 200, description: 'Environment updated' })
-  @ApiResponse({ status: 404, description: 'Environment not found' })
-  update(@Param('id', ParseIntPipe) id: number, @Body() dto: UpdateEnvironmentDto) {
+  @Patch(":id")
+  @ApiOperation({ summary: "Update an environment" })
+  @ApiResponse({ status: 200, description: "Environment updated" })
+  @ApiResponse({ status: 404, description: "Environment not found" })
+  update(
+    @Param("id", ParseIntPipe) id: number,
+    @Body() dto: UpdateEnvironmentDto,
+  ) {
     return this.environmentService.update(id, dto);
   }
 
-  @Delete(':id')
+  @Delete(":id")
   @HttpCode(204)
-  @ApiOperation({ summary: 'Delete an environment' })
-  @ApiResponse({ status: 204, description: 'Environment deleted' })
-  @ApiResponse({ status: 404, description: 'Environment not found' })
-  remove(@Param('id', ParseIntPipe) id: number) {
+  @ApiOperation({ summary: "Delete an environment" })
+  @ApiResponse({ status: 204, description: "Environment deleted" })
+  @ApiResponse({ status: 404, description: "Environment not found" })
+  remove(@Param("id", ParseIntPipe) id: number) {
     return this.environmentService.remove(id);
   }
 }
diff --git a/src/environment/environment.entity.ts b/src/environment/environment.entity.ts
index 224c78f..3ffc86f 100644
--- a/src/environment/environment.entity.ts
+++ b/src/environment/environment.entity.ts
@@ -4,7 +4,7 @@ import {
   Column,
   CreateDateColumn,
   UpdateDateColumn,
-} from 'typeorm';
+} from "typeorm";
 
 export interface EnvironmentUrls {
   id_url?: string;
@@ -13,7 +13,7 @@ export interface EnvironmentUrls {
   [key: string]: string | undefined;
 }
 
-@Entity('environments')
+@Entity("environments")
 export class EnvironmentEntity {
   @PrimaryGeneratedColumn()
   id: number;
@@ -21,7 +21,7 @@ export class EnvironmentEntity {
   @Column({ unique: true })
   name: string;
 
-  @Column('simple-json')
+  @Column("simple-json")
   urls: EnvironmentUrls;
 
   @CreateDateColumn()
diff --git a/src/environment/environment.module.ts b/src/environment/environment.module.ts
index 6466b42..bb07ed7 100644
--- a/src/environment/environment.module.ts
+++ b/src/environment/environment.module.ts
@@ -1,8 +1,8 @@
-import { Module } from '@nestjs/common';
-import { TypeOrmModule } from '@nestjs/typeorm';
-import { EnvironmentEntity } from './environment.entity';
-import { EnvironmentService } from './environment.service';
-import { EnvironmentController } from './environment.controller';
+import { Module } from "@nestjs/common";
+import { TypeOrmModule } from "@nestjs/typeorm";
+import { EnvironmentEntity } from "./environment.entity";
+import { EnvironmentService } from "./environment.service";
+import { EnvironmentController } from "./environment.controller";
 
 @Module({
   imports: [TypeOrmModule.forFeature([EnvironmentEntity])],
diff --git a/src/environment/environment.service.ts b/src/environment/environment.service.ts
index 94df33e..152ed06 100644
--- a/src/environment/environment.service.ts
+++ b/src/environment/environment.service.ts
@@ -1,12 +1,19 @@
-import { ConflictException, Injectable, NotFoundException } from '@nestjs/common';
-import { InjectRepository } from '@nestjs/typeorm';
-import { Repository } from 'typeorm';
-import { EnvironmentEntity } from './environment.entity';
-import { CreateEnvironmentDto } from './dto/create-environment.dto';
-import { UpdateEnvironmentDto } from './dto/update-environment.dto';
-import { PaginationQueryDto, PaginatedResult } from '../common/dto/pagination.dto';
+import {
+  ConflictException,
+  Injectable,
+  NotFoundException,
+} from "@nestjs/common";
+import { InjectRepository } from "@nestjs/typeorm";
+import { Repository } from "typeorm";
+import { EnvironmentEntity } from "./environment.entity";
+import { CreateEnvironmentDto } from "./dto/create-environment.dto";
+import { UpdateEnvironmentDto } from "./dto/update-environment.dto";
+import {
+  PaginationQueryDto,
+  PaginatedResult,
+} from "../common/dto/pagination.dto";
 
-export type EnvironmentOrderBy = 'id' | 'name' | 'createdAt' | 'updatedAt';
+export type EnvironmentOrderBy = "id" | "name" | "createdAt" | "updatedAt";
 
 @Injectable()
 export class EnvironmentService {
@@ -23,11 +30,13 @@ export class EnvironmentService {
     return this.repo.save(this.repo.create(dto));
   }
 
-  async findAll(query: PaginationQueryDto<EnvironmentOrderBy> = {}): Promise<PaginatedResult<EnvironmentEntity>> {
+  async findAll(
+    query: PaginationQueryDto<EnvironmentOrderBy> = {},
+  ): Promise<PaginatedResult<EnvironmentEntity>> {
     const page = query.page ?? 1;
     const limit = query.limit ?? 20;
-    const orderBy = query.orderBy ?? 'id';
-    const orderDir = query.orderDir ?? 'ASC';
+    const orderBy = query.orderBy ?? "id";
+    const orderDir = query.orderDir ?? "ASC";
     const [data, total] = await this.repo.findAndCount({
       order: { [orderBy]: orderDir },
       skip: (page - 1) * limit,
@@ -42,7 +51,10 @@ export class EnvironmentService {
     return env;
   }
 
-  async update(id: number, dto: UpdateEnvironmentDto): Promise<EnvironmentEntity> {
+  async update(
+    id: number,
+    dto: UpdateEnvironmentDto,
+  ): Promise<EnvironmentEntity> {
     const env = await this.findOne(id);
     Object.assign(env, dto);
     return this.repo.save(env);
diff --git a/src/filters/http-exception.filter.ts b/src/filters/http-exception.filter.ts
index ad2a865..81fe3e4 100644
--- a/src/filters/http-exception.filter.ts
+++ b/src/filters/http-exception.filter.ts
@@ -5,9 +5,9 @@ import {
   ExceptionFilter,
   HttpException,
   InternalServerErrorException,
-} from '@nestjs/common';
-import { TraceLogger } from '../common/trace-logger';
-import type { Request, Response } from 'express';
+} from "@nestjs/common";
+import { TraceLogger } from "../common/trace-logger";
+import type { Request, Response } from "express";
 
 @Catch(BadRequestException, InternalServerErrorException)
 export class HttpExceptionFilter implements ExceptionFilter {
@@ -20,8 +20,8 @@ export class HttpExceptionFilter implements ExceptionFilter {
     const status = exception.getStatus();
     const body = exception.getResponse();
 
-    const cause = (exception as any).cause as Error | undefined;
-    const causeMessage = cause ? ` | cause: ${cause.message}` : '';
+    const cause = (exception as unknown as { cause?: Error }).cause;
+    const causeMessage = cause ? ` | cause: ${cause.message}` : "";
     const message = `${exception.message}${causeMessage}`;
 
     if (status >= 500) {
@@ -30,7 +30,9 @@ export class HttpExceptionFilter implements ExceptionFilter {
         cause?.stack ?? exception.stack,
       );
     } else {
-      this.logger.warn(`[${request.method} ${request.url}] ${status} — ${message}`);
+      this.logger.warn(
+        `[${request.method} ${request.url}] ${status} — ${message}`,
+      );
     }
 
     response.status(status).json(body);
diff --git a/src/health/health.controller.ts b/src/health/health.controller.ts
index 0d53308..e3eb9c6 100644
--- a/src/health/health.controller.ts
+++ b/src/health/health.controller.ts
@@ -1,13 +1,13 @@
-import { Controller, Get } from '@nestjs/common';
-import { ApiOperation, ApiResponse, ApiTags } from '@nestjs/swagger';
+import { Controller, Get } from "@nestjs/common";
+import { ApiOperation, ApiResponse, ApiTags } from "@nestjs/swagger";
 
-@ApiTags('health')
+@ApiTags("health")
 @Controller()
 export class HealthController {
-  @Get('healthz')
-  @ApiOperation({ summary: 'Health check' })
-  @ApiResponse({ status: 200, description: 'Service is healthy' })
+  @Get("healthz")
+  @ApiOperation({ summary: "Health check" })
+  @ApiResponse({ status: 200, description: "Service is healthy" })
   healthz(): { status: string } {
-    return { status: 'ok' };
+    return { status: "ok" };
   }
 }
diff --git a/src/health/health.module.ts b/src/health/health.module.ts
index 7476abe..40b7bdf 100644
--- a/src/health/health.module.ts
+++ b/src/health/health.module.ts
@@ -1,5 +1,5 @@
-import { Module } from '@nestjs/common';
-import { HealthController } from './health.controller';
+import { Module } from "@nestjs/common";
+import { HealthController } from "./health.controller";
 
 @Module({
   controllers: [HealthController],
diff --git a/src/interceptors/logging.interceptor.ts b/src/interceptors/logging.interceptor.ts
index 13d2529..51c3bc6 100644
--- a/src/interceptors/logging.interceptor.ts
+++ b/src/interceptors/logging.interceptor.ts
@@ -3,10 +3,10 @@ import {
   ExecutionContext,
   Injectable,
   NestInterceptor,
-} from '@nestjs/common';
-import { TraceLogger } from '../common/trace-logger';
-import type { Request, Response } from 'express';
-import { Observable, tap } from 'rxjs';
+} from "@nestjs/common";
+import { TraceLogger } from "../common/trace-logger";
+import type { Request, Response } from "express";
+import { Observable, tap } from "rxjs";
 
 @Injectable()
 export class LoggingInterceptor implements NestInterceptor {
@@ -18,16 +18,20 @@ export class LoggingInterceptor implements NestInterceptor {
     const res = http.getResponse<Response>();
     const { method, url, body } = req;
     const start = Date.now();
-    const bodyStr = body && Object.keys(body).length ? ` ${JSON.stringify(body)}` : '';
+    const bodyStr =
+      body && Object.keys(body).length ? ` ${JSON.stringify(body)}` : "";
 
     this.logger.debug(`→ ${method} ${url}${bodyStr}`);
 
     return next.handle().pipe(
       tap((responseBody) => {
         const ms = Date.now() - start;
-        const len = responseBody != null ? JSON.stringify(responseBody).length : 0;
-        const lenStr = len > 0 ? ` [${len}b]` : '';
-        this.logger.debug(`← ${method} ${url} ${res.statusCode} (${ms}ms)${lenStr}`);
+        const len =
+          responseBody != null ? JSON.stringify(responseBody).length : 0;
+        const lenStr = len > 0 ? ` [${len}b]` : "";
+        this.logger.debug(
+          `← ${method} ${url} ${res.statusCode} (${ms}ms)${lenStr}`,
+        );
       }),
     );
   }
diff --git a/src/interceptors/trace.interceptor.ts b/src/interceptors/trace.interceptor.ts
index 7c4f3f3..36008b5 100644
--- a/src/interceptors/trace.interceptor.ts
+++ b/src/interceptors/trace.interceptor.ts
@@ -1,14 +1,20 @@
-import { CallHandler, ExecutionContext, Injectable, NestInterceptor } from '@nestjs/common';
-import type { Request } from 'express';
-import * as crypto from 'crypto';
-import { Observable } from 'rxjs';
-import { traceStorage } from '../common/trace-context';
+import {
+  CallHandler,
+  ExecutionContext,
+  Injectable,
+  NestInterceptor,
+} from "@nestjs/common";
+import type { Request } from "express";
+import * as crypto from "crypto";
+import { Observable } from "rxjs";
+import { traceStorage } from "../common/trace-context";
 
 @Injectable()
 export class TraceInterceptor implements NestInterceptor {
   intercept(context: ExecutionContext, next: CallHandler): Observable<unknown> {
     const req = context.switchToHttp().getRequest<Request>();
-    const traceId = (req.headers['x-trace-id'] as string | undefined) ?? crypto.randomUUID();
+    const traceId =
+      (req.headers["x-trace-id"] as string | undefined) ?? crypto.randomUUID();
 
     return new Observable((subscriber) => {
       traceStorage.run({ traceId }, () => {
diff --git a/src/main.ts b/src/main.ts
index b1aa61f..7d45338 100644
--- a/src/main.ts
+++ b/src/main.ts
@@ -1,25 +1,27 @@
-import { NestFactory } from '@nestjs/core';
-import { ConfigService } from '@nestjs/config';
-import { ValidationPipe } from '@nestjs/common';
-import { TraceLogger } from './common/trace-logger';
-import { DocumentBuilder, SwaggerModule } from '@nestjs/swagger';
-import { AppModule } from './app.module';
-import { HttpExceptionFilter } from './filters/http-exception.filter';
-import { TraceInterceptor } from './interceptors/trace.interceptor';
-import { LoggingInterceptor } from './interceptors/logging.interceptor';
-import { name as pkgName, version as pkgVersion } from '../package.json';
+import { NestFactory } from "@nestjs/core";
+import { ConfigService } from "@nestjs/config";
+import { ValidationPipe } from "@nestjs/common";
+import { TraceLogger } from "./common/trace-logger";
+import { DocumentBuilder, SwaggerModule } from "@nestjs/swagger";
+import { AppModule } from "./app.module";
+import { HttpExceptionFilter } from "./filters/http-exception.filter";
+import { TraceInterceptor } from "./interceptors/trace.interceptor";
+import { LoggingInterceptor } from "./interceptors/logging.interceptor";
+import { name as pkgName, version as pkgVersion } from "../package.json";
 
 async function bootstrap() {
-  const logger = new TraceLogger('Bootstrap');
-  const app = await NestFactory.create(AppModule, { logger: new TraceLogger('Bootstrap', { timestamp: true }) });
+  const logger = new TraceLogger("Bootstrap");
+  const app = await NestFactory.create(AppModule, {
+    logger: new TraceLogger("Bootstrap", { timestamp: true }),
+  });
 
   app.useGlobalPipes(new ValidationPipe({ transform: true }));
   app.useGlobalFilters(new HttpExceptionFilter());
   app.useGlobalInterceptors(new TraceInterceptor(), new LoggingInterceptor());
 
   const config = app.get(ConfigService);
-  const port = config.get<number>('PORT', 3000);
-  const nodeEnv = config.get<string>('NODE_ENV', 'development');
+  const port = config.get<number>("PORT", 3000);
+  const nodeEnv = config.get<string>("NODE_ENV", "development");
 
   const swaggerConfig = new DocumentBuilder()
     .setTitle(pkgName)
@@ -28,11 +30,13 @@ async function bootstrap() {
     .build();
 
   const document = SwaggerModule.createDocument(app, swaggerConfig);
-  SwaggerModule.setup('api', app, document);
+  SwaggerModule.setup("api", app, document);
 
   await app.listen(port);
 
-  logger.log(`Application "${pkgName}" v${pkgVersion} running on port ${port} [${nodeEnv}]`);
+  logger.log(
+    `Application "${pkgName}" v${pkgVersion} running on port ${port} [${nodeEnv}]`,
+  );
   logger.log(`Swagger UI available at http://localhost:${port}/api`);
   logger.log(`MCP endpoint available at http://localhost:${port}/mcp`);
 }
diff --git a/src/mcp/mcp.controller.ts b/src/mcp/mcp.controller.ts
index 956c239..8adf7b3 100644
--- a/src/mcp/mcp.controller.ts
+++ b/src/mcp/mcp.controller.ts
@@ -1,52 +1,68 @@
-import { Controller, Delete, Get, Post, Req, Res } from '@nestjs/common';
-import { ApiOperation, ApiResponse, ApiTags } from '@nestjs/swagger';
-import type { Request, Response } from 'express';
-import { McpService } from './mcp.service';
+import { Controller, Delete, Get, Post, Req, Res } from "@nestjs/common";
+import { ApiOperation, ApiResponse, ApiTags } from "@nestjs/swagger";
+import type { Request, Response } from "express";
+import { McpService } from "./mcp.service";
 
-@ApiTags('mcp')
-@Controller('mcp')
+@ApiTags("mcp")
+@Controller("mcp")
 export class McpController {
   constructor(private readonly mcpService: McpService) {}
 
   @Post()
   @ApiOperation({
-    summary: 'Send JSON-RPC message',
+    summary: "Send JSON-RPC message",
     description:
-      'Accepts a JSON-RPC request, notification, or response. ' +
-      'Returns either `application/json` for a single response or ' +
-      '`text/event-stream` (SSE) when the server streams multiple messages.',
+      "Accepts a JSON-RPC request, notification, or response. " +
+      "Returns either `application/json` for a single response or " +
+      "`text/event-stream` (SSE) when the server streams multiple messages.",
+  })
+  @ApiResponse({
+    status: 200,
+    description: "JSON-RPC response (application/json or text/event-stream)",
+  })
+  @ApiResponse({
+    status: 202,
+    description: "Accepted — input was a notification or response only",
+  })
+  @ApiResponse({
+    status: 400,
+    description: "Bad Request — malformed JSON-RPC payload",
   })
-  @ApiResponse({ status: 200, description: 'JSON-RPC response (application/json or text/event-stream)' })
-  @ApiResponse({ status: 202, description: 'Accepted — input was a notification or response only' })
-  @ApiResponse({ status: 400, description: 'Bad Request — malformed JSON-RPC payload' })
   post(@Req() req: Request, @Res() res: Response): Promise<void> {
     return this.mcpService.handle(req, res);
   }
 
   @Get()
   @ApiOperation({
-    summary: 'Open server-sent event stream',
+    summary: "Open server-sent event stream",
     description:
-      'Opens a persistent SSE stream so the server can push JSON-RPC requests and ' +
-      'notifications to the client without a prior POST. ' +
-      'Requires `Accept: text/event-stream`. Pass `Last-Event-ID` to resume a broken stream.',
+      "Opens a persistent SSE stream so the server can push JSON-RPC requests and " +
+      "notifications to the client without a prior POST. " +
+      "Requires `Accept: text/event-stream`. Pass `Last-Event-ID` to resume a broken stream.",
+  })
+  @ApiResponse({ status: 200, description: "SSE stream (text/event-stream)" })
+  @ApiResponse({
+    status: 405,
+    description: "Method Not Allowed — server does not offer an SSE stream",
   })
-  @ApiResponse({ status: 200, description: 'SSE stream (text/event-stream)' })
-  @ApiResponse({ status: 405, description: 'Method Not Allowed — server does not offer an SSE stream' })
   get(@Req() req: Request, @Res() res: Response): Promise<void> {
     return this.mcpService.handle(req, res);
   }
 
   @Delete()
   @ApiOperation({
-    summary: 'Terminate session',
+    summary: "Terminate session",
     description:
-      'Explicitly terminates a session identified by the `Mcp-Session-Id` header. ' +
-      'The server may return 405 if it does not support client-initiated session termination.',
+      "Explicitly terminates a session identified by the `Mcp-Session-Id` header. " +
+      "The server may return 405 if it does not support client-initiated session termination.",
+  })
+  @ApiResponse({ status: 200, description: "Session terminated" })
+  @ApiResponse({ status: 404, description: "Session not found" })
+  @ApiResponse({
+    status: 405,
+    description:
+      "Method Not Allowed — server does not support session termination",
   })
-  @ApiResponse({ status: 200, description: 'Session terminated' })
-  @ApiResponse({ status: 404, description: 'Session not found' })
-  @ApiResponse({ status: 405, description: 'Method Not Allowed — server does not support session termination' })
   delete(@Req() req: Request, @Res() res: Response): Promise<void> {
     return this.mcpService.handle(req, res);
   }
diff --git a/src/mcp/mcp.module.ts b/src/mcp/mcp.module.ts
index 1d02887..40793cf 100644
--- a/src/mcp/mcp.module.ts
+++ b/src/mcp/mcp.module.ts
@@ -1,15 +1,22 @@
-import { Module } from '@nestjs/common';
-import { McpController } from './mcp.controller';
-import { McpService } from './mcp.service';
-import { AuthModule } from '../auth/auth.module';
-import { SessionModule } from '../session/session.module';
-import { EnvironmentModule } from '../environment/environment.module';
-import { BrowserModule } from '../browser/browser.module';
-import { CodeExecutorModule } from '../code-executor/code-executor.module';
-import { ScenarioModule } from '../scenario/scenario.module';
+import { Module } from "@nestjs/common";
+import { McpController } from "./mcp.controller";
+import { McpService } from "./mcp.service";
+import { AuthModule } from "../auth/auth.module";
+import { SessionModule } from "../session/session.module";
+import { EnvironmentModule } from "../environment/environment.module";
+import { BrowserModule } from "../browser/browser.module";
+import { CodeExecutorModule } from "../code-executor/code-executor.module";
+import { ScenarioModule } from "../scenario/scenario.module";
 
 @Module({
-  imports: [AuthModule, SessionModule, EnvironmentModule, BrowserModule, CodeExecutorModule, ScenarioModule],
+  imports: [
+    AuthModule,
+    SessionModule,
+    EnvironmentModule,
+    BrowserModule,
+    CodeExecutorModule,
+    ScenarioModule,
+  ],
   controllers: [McpController],
   providers: [McpService],
 })
diff --git a/src/mcp/mcp.service.ts b/src/mcp/mcp.service.ts
index f8b074c..1fffc9d 100644
--- a/src/mcp/mcp.service.ts
+++ b/src/mcp/mcp.service.ts
@@ -1,17 +1,17 @@
-import { Injectable } from '@nestjs/common';
-import { McpServer } from '@modelcontextprotocol/sdk/server/mcp.js';
-import { StreamableHTTPServerTransport } from '@modelcontextprotocol/sdk/server/streamableHttp.js';
-import { z } from 'zod';
-import type { Request, Response } from 'express';
-import { AuthService } from '../auth/auth.service';
-import { SessionService } from '../session/session.service';
-import { EnvironmentService } from '../environment/environment.service';
-import type { EnvironmentUrls } from '../environment/environment.entity';
-import { BrowserService } from '../browser/browser.service';
-import { CodeExecutorService } from '../code-executor/code-executor.service';
-import { ScenarioService } from '../scenario/scenario.service';
+import { Injectable } from "@nestjs/common";
+import { McpServer } from "@modelcontextprotocol/sdk/server/mcp.js";
+import { StreamableHTTPServerTransport } from "@modelcontextprotocol/sdk/server/streamableHttp.js";
+import { z } from "zod";
+import type { Request, Response } from "express";
+import { AuthService } from "../auth/auth.service";
+import { SessionService } from "../session/session.service";
+import { EnvironmentService } from "../environment/environment.service";
+import type { EnvironmentUrls } from "../environment/environment.entity";
+import { BrowserService } from "../browser/browser.service";
+import { CodeExecutorService } from "../code-executor/code-executor.service";
+import { ScenarioService } from "../scenario/scenario.service";
 
-import pkg from '../../package.json';
+import pkg from "../../package.json";
 
 @Injectable()
 export class McpService {
@@ -31,161 +31,273 @@ export class McpService {
   }
 
   private registerTools(server: McpServer): void {
-
     // ── Auth ──────────────────────────────────────────────────────────────────
 
     server.registerTool(
-      'list_keys',
-      { description: 'List available key identifiers from the keys directory' },
+      "list_keys",
+      { description: "List available key identifiers from the keys directory" },
       async () => {
         const keys = this.authService.listKeys();
-        return { content: [{ type: 'text' as const, text: JSON.stringify(keys) }] };
+        return {
+          content: [{ type: "text" as const, text: JSON.stringify(keys) }],
+        };
       },
     );
 
     server.registerTool(
-      'login',
+      "login",
       {
-        description: 'Log in using a file key against a named environment and store the session',
+        description:
+          "Log in using a file key against a named environment and store the session",
         inputSchema: {
-          key: z.string().describe('Key identifier (filename without extension from keys/ dir)'),
-          environmentName: z.string().describe('Environment name to resolve login/cabinet URLs'),
-          sessionName: z.string().optional().describe('Session name to store credentials under. Auto-UUID if omitted.'),
+          key: z
+            .string()
+            .describe(
+              "Key identifier (filename without extension from keys/ dir)",
+            ),
+          environmentName: z
+            .string()
+            .describe("Environment name to resolve login/cabinet URLs"),
+          sessionName: z
+            .string()
+            .optional()
+            .describe(
+              "Session name to store credentials under. Auto-UUID if omitted.",
+            ),
         },
       },
       async ({ key, environmentName, sessionName }) => {
-        const result = await this.authService.login(key, environmentName, sessionName);
-        return { content: [{ type: 'text' as const, text: JSON.stringify(result) }] };
+        const result = await this.authService.login(
+          key,
+          environmentName,
+          sessionName,
+        );
+        return {
+          content: [{ type: "text" as const, text: JSON.stringify(result) }],
+        };
       },
     );
 
     // ── Sessions ──────────────────────────────────────────────────────────────
 
     server.registerTool(
-      'list_sessions',
+      "list_sessions",
       {
-        description: 'List all stored sessions (id, sessionName, createdAt, updatedAt), paginated',
+        description:
+          "List all stored sessions (id, sessionName, createdAt, updatedAt), paginated",
         inputSchema: {
-          page: z.number().int().min(1).optional().describe('Page number (default 1)'),
-          limit: z.number().int().min(1).optional().describe('Items per page (default 20)'),
-          orderBy: z.enum(['id', 'sessionName', 'createdAt', 'updatedAt']).optional().describe('Field to order by (default id)'),
-          orderDir: z.enum(['ASC', 'DESC']).optional().describe('Sort direction (default ASC)'),
+          page: z
+            .number()
+            .int()
+            .min(1)
+            .optional()
+            .describe("Page number (default 1)"),
+          limit: z
+            .number()
+            .int()
+            .min(1)
+            .optional()
+            .describe("Items per page (default 20)"),
+          orderBy: z
+            .enum(["id", "sessionName", "createdAt", "updatedAt"])
+            .optional()
+            .describe("Field to order by (default id)"),
+          orderDir: z
+            .enum(["ASC", "DESC"])
+            .optional()
+            .describe("Sort direction (default ASC)"),
         },
       },
       async ({ page, limit, orderBy, orderDir }) => {
-        const sessions = await this.sessionService.findAll({ page, limit, orderBy, orderDir });
-        return { content: [{ type: 'text' as const, text: JSON.stringify(sessions) }] };
+        const sessions = await this.sessionService.findAll({
+          page,
+          limit,
+          orderBy,
+          orderDir,
+        });
+        return {
+          content: [{ type: "text" as const, text: JSON.stringify(sessions) }],
+        };
       },
     );
 
     server.registerTool(
-      'delete_session',
+      "delete_session",
       {
-        description: 'Delete a session by numeric ID',
+        description: "Delete a session by numeric ID",
         inputSchema: {
-          id: z.number().int().describe('Session ID to delete'),
+          id: z.number().int().describe("Session ID to delete"),
         },
       },
       async ({ id }) => {
         const { data } = await this.sessionService.findAll();
-        if (!data.find(s => s.id === id)) {
-          return { isError: true, content: [{ type: 'text' as const, text: `Session ${id} not found` }] };
+        if (!data.find((s) => s.id === id)) {
+          return {
+            isError: true,
+            content: [
+              { type: "text" as const, text: `Session ${id} not found` },
+            ],
+          };
         }
         await this.sessionService.remove(id);
-        return { content: [{ type: 'text' as const, text: `Session ${id} deleted` }] };
+        return {
+          content: [{ type: "text" as const, text: `Session ${id} deleted` }],
+        };
       },
     );
 
     // ── Environments ──────────────────────────────────────────────────────────
 
     server.registerTool(
-      'list_environments',
+      "list_environments",
       {
-        description: 'List all environments, paginated',
+        description: "List all environments, paginated",
         inputSchema: {
-          page: z.number().int().min(1).optional().describe('Page number (default 1)'),
-          limit: z.number().int().min(1).optional().describe('Items per page (default 20)'),
-          orderBy: z.enum(['id', 'name', 'createdAt', 'updatedAt']).optional().describe('Field to order by (default id)'),
-          orderDir: z.enum(['ASC', 'DESC']).optional().describe('Sort direction (default ASC)'),
+          page: z
+            .number()
+            .int()
+            .min(1)
+            .optional()
+            .describe("Page number (default 1)"),
+          limit: z
+            .number()
+            .int()
+            .min(1)
+            .optional()
+            .describe("Items per page (default 20)"),
+          orderBy: z
+            .enum(["id", "name", "createdAt", "updatedAt"])
+            .optional()
+            .describe("Field to order by (default id)"),
+          orderDir: z
+            .enum(["ASC", "DESC"])
+            .optional()
+            .describe("Sort direction (default ASC)"),
         },
       },
       async ({ page, limit, orderBy, orderDir }) => {
-        const envs = await this.environmentService.findAll({ page, limit, orderBy, orderDir });
-        return { content: [{ type: 'text' as const, text: JSON.stringify(envs) }] };
+        const envs = await this.environmentService.findAll({
+          page,
+          limit,
+          orderBy,
+          orderDir,
+        });
+        return {
+          content: [{ type: "text" as const, text: JSON.stringify(envs) }],
+        };
       },
     );
 
     server.registerTool(
-      'get_environment',
+      "get_environment",
       {
-        description: 'Get an environment record by ID',
+        description: "Get an environment record by ID",
         inputSchema: {
-          id: z.number().int().describe('Environment ID'),
+          id: z.number().int().describe("Environment ID"),
         },
       },
       async ({ id }) => {
         try {
           const env = await this.environmentService.findOne(id);
-          return { content: [{ type: 'text' as const, text: JSON.stringify(env) }] };
+          return {
+            content: [{ type: "text" as const, text: JSON.stringify(env) }],
+          };
         } catch {
-          return { isError: true, content: [{ type: 'text' as const, text: `Environment ${id} not found` }] };
+          return {
+            isError: true,
+            content: [
+              { type: "text" as const, text: `Environment ${id} not found` },
+            ],
+          };
         }
       },
     );
 
     server.registerTool(
-      'create_environment',
+      "create_environment",
       {
-        description: 'Create a new named environment with a set of URLs',
+        description: "Create a new named environment with a set of URLs",
         inputSchema: {
-          name: z.string().describe('Unique environment name, e.g. liquio-diia-stg'),
-          urls: z.record(z.string(), z.string()).describe('Map of URL keys to URL strings (id_url, cabinet_url, admin_url, …)'),
+          name: z
+            .string()
+            .describe("Unique environment name, e.g. liquio-diia-stg"),
+          urls: z
+            .record(z.string(), z.string())
+            .describe(
+              "Map of URL keys to URL strings (id_url, cabinet_url, admin_url, …)",
+            ),
         },
       },
       async ({ name, urls }) => {
         try {
-          const env = await this.environmentService.create({ name, urls: urls as EnvironmentUrls });
-          return { content: [{ type: 'text' as const, text: JSON.stringify(env) }] };
+          const env = await this.environmentService.create({
+            name,
+            urls: urls as EnvironmentUrls,
+          });
+          return {
+            content: [{ type: "text" as const, text: JSON.stringify(env) }],
+          };
         } catch (err) {
-          return { isError: true, content: [{ type: 'text' as const, text: (err as Error).message }] };
+          return {
+            isError: true,
+            content: [{ type: "text" as const, text: (err as Error).message }],
+          };
         }
       },
     );
 
     server.registerTool(
-      'update_environment',
+      "update_environment",
       {
-        description: 'Update an existing environment (name and/or urls)',
+        description: "Update an existing environment (name and/or urls)",
         inputSchema: {
-          id: z.number().int().describe('Environment ID to update'),
-          name: z.string().optional().describe('New name'),
-          urls: z.record(z.string(), z.string()).optional().describe('New URLs map'),
+          id: z.number().int().describe("Environment ID to update"),
+          name: z.string().optional().describe("New name"),
+          urls: z
+            .record(z.string(), z.string())
+            .optional()
+            .describe("New URLs map"),
         },
       },
       async ({ id, name, urls }) => {
         try {
-          const env = await this.environmentService.update(id, { name, urls: urls as EnvironmentUrls | undefined });
-          return { content: [{ type: 'text' as const, text: JSON.stringify(env) }] };
+          const env = await this.environmentService.update(id, {
+            name,
+            urls: urls as EnvironmentUrls | undefined,
+          });
+          return {
+            content: [{ type: "text" as const, text: JSON.stringify(env) }],
+          };
         } catch (err) {
-          return { isError: true, content: [{ type: 'text' as const, text: (err as Error).message }] };
+          return {
+            isError: true,
+            content: [{ type: "text" as const, text: (err as Error).message }],
+          };
         }
       },
     );
 
     server.registerTool(
-      'delete_environment',
+      "delete_environment",
       {
-        description: 'Delete an environment by ID',
+        description: "Delete an environment by ID",
         inputSchema: {
-          id: z.number().int().describe('Environment ID to delete'),
+          id: z.number().int().describe("Environment ID to delete"),
         },
       },
       async ({ id }) => {
         try {
           await this.environmentService.remove(id);
-          return { content: [{ type: 'text' as const, text: `Environment ${id} deleted` }] };
+          return {
+            content: [
+              { type: "text" as const, text: `Environment ${id} deleted` },
+            ],
+          };
         } catch (err) {
-          return { isError: true, content: [{ type: 'text' as const, text: (err as Error).message }] };
+          return {
+            isError: true,
+            content: [{ type: "text" as const, text: (err as Error).message }],
+          };
         }
       },
     );
@@ -193,43 +305,86 @@ export class McpService {
     // ── Browser ───────────────────────────────────────────────────────────────
 
     server.registerTool(
-      'open_url',
+      "open_url",
       {
-        description: 'Open a URL using a stored session and return the page title and content',
+        description:
+          "Open a URL using a stored session and return the page title and content",
         inputSchema: {
-          sessionName: z.string().optional().describe('Session name to restore cookies and localStorage from. Omit to open without a stored session.'),
-          url: z.string().url().describe('URL to navigate to'),
-          readerMode: z.boolean().optional().describe('Extract readable plain text instead of raw HTML'),
-          selector: z.string().optional().describe('CSS selector whose matching element content is returned; applied before readerMode'),
+          sessionName: z
+            .string()
+            .optional()
+            .describe(
+              "Session name to restore cookies and localStorage from. Omit to open without a stored session.",
+            ),
+          url: z.string().url().describe("URL to navigate to"),
+          readerMode: z
+            .boolean()
+            .optional()
+            .describe("Extract readable plain text instead of raw HTML"),
+          selector: z
+            .string()
+            .optional()
+            .describe(
+              "CSS selector whose matching element content is returned; applied before readerMode",
+            ),
         },
       },
       async ({ sessionName, url, readerMode, selector }) => {
         try {
-          const result = await this.browserService.open(sessionName, url, readerMode ?? false, selector);
-          return { content: [{ type: 'text' as const, text: JSON.stringify(result) }] };
+          const result = await this.browserService.open(
+            sessionName,
+            url,
+            readerMode ?? false,
+            selector,
+          );
+          return {
+            content: [{ type: "text" as const, text: JSON.stringify(result) }],
+          };
         } catch (err) {
-          return { isError: true, content: [{ type: 'text' as const, text: (err as Error).message }] };
+          return {
+            isError: true,
+            content: [{ type: "text" as const, text: (err as Error).message }],
+          };
         }
       },
     );
 
     server.registerTool(
-      'exec_code',
+      "exec_code",
       {
-        description: 'Execute arbitrary Playwright JavaScript with `page` and `context` in scope',
+        description:
+          "Execute arbitrary Playwright JavaScript with `page` and `context` in scope",
         inputSchema: {
-          sessionName: z.string().optional().describe('Session name to restore. Omit to run without a stored session.'),
-          code: z.string().describe('JavaScript code body to execute (async-safe, may use `page` and `context`)'),
-          url: z.string().url().optional().describe('Optional URL to navigate to before running code'),
+          sessionName: z
+            .string()
+            .optional()
+            .describe(
+              "Session name to restore. Omit to run without a stored session.",
+            ),
+          code: z
+            .string()
+            .describe(
+              "JavaScript code body to execute (async-safe, may use `page` and `context`)",
+            ),
+          url: z
+            .string()
+            .url()
+            .optional()
+            .describe("Optional URL to navigate to before running code"),
         },
       },
       async ({ sessionName, code, url }) => {
         try {
           this.codeExecutor.validate(code);
           const result = await this.browserService.exec(sessionName, code, url);
-          return { content: [{ type: 'text' as const, text: JSON.stringify(result) }] };
+          return {
+            content: [{ type: "text" as const, text: JSON.stringify(result) }],
+          };
         } catch (err) {
-          return { isError: true, content: [{ type: 'text' as const, text: (err as Error).message }] };
+          return {
+            isError: true,
+            content: [{ type: "text" as const, text: (err as Error).message }],
+          };
         }
       },
     );
@@ -237,215 +392,341 @@ export class McpService {
     // ── Scenarios ─────────────────────────────────────────────────────────────
 
     server.registerTool(
-      'list_scenarios',
+      "list_scenarios",
       {
-        description: 'List all scenarios (paginated)',
+        description: "List all scenarios (paginated)",
         inputSchema: {
-          page: z.number().int().min(1).optional().describe('Page number (default 1)'),
-          limit: z.number().int().min(1).optional().describe('Items per page (default 20)'),
-          orderBy: z.enum(['id', 'name', 'createdAt', 'updatedAt']).optional().describe('Field to order by (default id)'),
-          orderDir: z.enum(['ASC', 'DESC']).optional().describe('Sort direction (default ASC)'),
+          page: z
+            .number()
+            .int()
+            .min(1)
+            .optional()
+            .describe("Page number (default 1)"),
+          limit: z
+            .number()
+            .int()
+            .min(1)
+            .optional()
+            .describe("Items per page (default 20)"),
+          orderBy: z
+            .enum(["id", "name", "createdAt", "updatedAt"])
+            .optional()
+            .describe("Field to order by (default id)"),
+          orderDir: z
+            .enum(["ASC", "DESC"])
+            .optional()
+            .describe("Sort direction (default ASC)"),
         },
       },
       async ({ page, limit, orderBy, orderDir }) => {
-        const result = await this.scenarioService.findAll({ page, limit, orderBy, orderDir });
-        return { content: [{ type: 'text' as const, text: JSON.stringify(result) }] };
+        const result = await this.scenarioService.findAll({
+          page,
+          limit,
+          orderBy,
+          orderDir,
+        });
+        return {
+          content: [{ type: "text" as const, text: JSON.stringify(result) }],
+        };
       },
     );
 
     server.registerTool(
-      'get_scenario',
+      "get_scenario",
       {
-        description: 'Get a scenario with its steps by ID',
+        description: "Get a scenario with its steps by ID",
         inputSchema: {
-          id: z.number().int().describe('Scenario ID'),
+          id: z.number().int().describe("Scenario ID"),
         },
       },
       async ({ id }) => {
         try {
           const scenario = await this.scenarioService.findOne(id);
-          return { content: [{ type: 'text' as const, text: JSON.stringify(scenario) }] };
+          return {
+            content: [
+              { type: "text" as const, text: JSON.stringify(scenario) },
+            ],
+          };
         } catch (err) {
-          return { isError: true, content: [{ type: 'text' as const, text: (err as Error).message }] };
+          return {
+            isError: true,
+            content: [{ type: "text" as const, text: (err as Error).message }],
+          };
         }
       },
     );
 
     server.registerTool(
-      'create_scenario',
+      "create_scenario",
       {
-        description: 'Create a new scenario',
+        description: "Create a new scenario",
         inputSchema: {
-          name: z.string().describe('Scenario name'),
+          name: z.string().describe("Scenario name"),
         },
       },
       async ({ name }) => {
         try {
           const scenario = await this.scenarioService.create({ name });
-          return { content: [{ type: 'text' as const, text: JSON.stringify(scenario) }] };
+          return {
+            content: [
+              { type: "text" as const, text: JSON.stringify(scenario) },
+            ],
+          };
         } catch (err) {
-          return { isError: true, content: [{ type: 'text' as const, text: (err as Error).message }] };
+          return {
+            isError: true,
+            content: [{ type: "text" as const, text: (err as Error).message }],
+          };
         }
       },
     );
 
     server.registerTool(
-      'update_scenario',
+      "update_scenario",
       {
-        description: 'Update a scenario name',
+        description: "Update a scenario name",
         inputSchema: {
-          id: z.number().int().describe('Scenario ID'),
-          name: z.string().optional().describe('New name'),
+          id: z.number().int().describe("Scenario ID"),
+          name: z.string().optional().describe("New name"),
         },
       },
       async ({ id, name }) => {
         try {
           const scenario = await this.scenarioService.update(id, { name });
-          return { content: [{ type: 'text' as const, text: JSON.stringify(scenario) }] };
+          return {
+            content: [
+              { type: "text" as const, text: JSON.stringify(scenario) },
+            ],
+          };
         } catch (err) {
-          return { isError: true, content: [{ type: 'text' as const, text: (err as Error).message }] };
+          return {
+            isError: true,
+            content: [{ type: "text" as const, text: (err as Error).message }],
+          };
         }
       },
     );
 
     server.registerTool(
-      'delete_scenario',
+      "delete_scenario",
       {
-        description: 'Delete a scenario by ID',
+        description: "Delete a scenario by ID",
         inputSchema: {
-          id: z.number().int().describe('Scenario ID'),
+          id: z.number().int().describe("Scenario ID"),
         },
       },
       async ({ id }) => {
         try {
           await this.scenarioService.remove(id);
-          return { content: [{ type: 'text' as const, text: `Scenario ${id} deleted` }] };
+          return {
+            content: [
+              { type: "text" as const, text: `Scenario ${id} deleted` },
+            ],
+          };
         } catch (err) {
-          return { isError: true, content: [{ type: 'text' as const, text: (err as Error).message }] };
+          return {
+            isError: true,
+            content: [{ type: "text" as const, text: (err as Error).message }],
+          };
         }
       },
     );
 
     server.registerTool(
-      'create_scenario_step',
+      "create_scenario_step",
       {
-        description: 'Add a step to a scenario',
+        description: "Add a step to a scenario",
         inputSchema: {
-          scenarioId: z.number().int().describe('Parent scenario ID'),
-          order: z.number().int().min(0).describe('Execution order (ascending)'),
-          type: z.enum(['login', 'exec', 'sign']).describe('Step type'),
-          sessionName: z.string().describe('Session name used by this step'),
-          execCode: z.string().optional().describe('Playwright JS code to execute (exec steps)'),
-          validateCode: z.string().optional().describe('Validation JS code returning { success, description }'),
+          scenarioId: z.number().int().describe("Parent scenario ID"),
+          order: z
+            .number()
+            .int()
+            .min(0)
+            .describe("Execution order (ascending)"),
+          type: z.enum(["login", "exec", "sign"]).describe("Step type"),
+          sessionName: z.string().describe("Session name used by this step"),
+          execCode: z
+            .string()
+            .optional()
+            .describe("Playwright JS code to execute (exec steps)"),
+          validateCode: z
+            .string()
+            .optional()
+            .describe("Validation JS code returning { success, description }"),
         },
       },
       async ({ scenarioId, ...dto }) => {
         try {
           const step = await this.scenarioService.createStep(scenarioId, dto);
-          return { content: [{ type: 'text' as const, text: JSON.stringify(step) }] };
+          return {
+            content: [{ type: "text" as const, text: JSON.stringify(step) }],
+          };
         } catch (err) {
-          return { isError: true, content: [{ type: 'text' as const, text: (err as Error).message }] };
+          return {
+            isError: true,
+            content: [{ type: "text" as const, text: (err as Error).message }],
+          };
         }
       },
     );
 
     server.registerTool(
-      'get_scenario_step',
+      "get_scenario_step",
       {
-        description: 'Get a single step of a scenario',
+        description: "Get a single step of a scenario",
         inputSchema: {
-          scenarioId: z.number().int().describe('Scenario ID'),
-          stepId: z.number().int().describe('Step ID'),
+          scenarioId: z.number().int().describe("Scenario ID"),
+          stepId: z.number().int().describe("Step ID"),
         },
       },
       async ({ scenarioId, stepId }) => {
         try {
           const step = await this.scenarioService.findStep(scenarioId, stepId);
-          return { content: [{ type: 'text' as const, text: JSON.stringify(step) }] };
+          return {
+            content: [{ type: "text" as const, text: JSON.stringify(step) }],
+          };
         } catch (err) {
-          return { isError: true, content: [{ type: 'text' as const, text: (err as Error).message }] };
+          return {
+            isError: true,
+            content: [{ type: "text" as const, text: (err as Error).message }],
+          };
         }
       },
     );
 
     server.registerTool(
-      'update_scenario_step',
+      "update_scenario_step",
       {
-        description: 'Update a step within a scenario',
+        description: "Update a step within a scenario",
         inputSchema: {
-          scenarioId: z.number().int().describe('Scenario ID'),
-          stepId: z.number().int().describe('Step ID'),
-          order: z.number().int().min(0).optional().describe('New execution order'),
-          type: z.enum(['login', 'exec', 'sign']).optional().describe('New step type'),
-          sessionName: z.string().optional().describe('New session name'),
-          execCode: z.string().optional().describe('New exec code'),
-          validateCode: z.string().optional().describe('New validation code'),
+          scenarioId: z.number().int().describe("Scenario ID"),
+          stepId: z.number().int().describe("Step ID"),
+          order: z
+            .number()
+            .int()
+            .min(0)
+            .optional()
+            .describe("New execution order"),
+          type: z
+            .enum(["login", "exec", "sign"])
+            .optional()
+            .describe("New step type"),
+          sessionName: z.string().optional().describe("New session name"),
+          execCode: z.string().optional().describe("New exec code"),
+          validateCode: z.string().optional().describe("New validation code"),
         },
       },
       async ({ scenarioId, stepId, ...dto }) => {
         try {
-          const step = await this.scenarioService.updateStep(scenarioId, stepId, dto);
-          return { content: [{ type: 'text' as const, text: JSON.stringify(step) }] };
+          const step = await this.scenarioService.updateStep(
+            scenarioId,
+            stepId,
+            dto,
+          );
+          return {
+            content: [{ type: "text" as const, text: JSON.stringify(step) }],
+          };
         } catch (err) {
-          return { isError: true, content: [{ type: 'text' as const, text: (err as Error).message }] };
+          return {
+            isError: true,
+            content: [{ type: "text" as const, text: (err as Error).message }],
+          };
         }
       },
     );
 
     server.registerTool(
-      'delete_scenario_step',
+      "delete_scenario_step",
       {
-        description: 'Delete a step from a scenario',
+        description: "Delete a step from a scenario",
         inputSchema: {
-          scenarioId: z.number().int().describe('Scenario ID'),
-          stepId: z.number().int().describe('Step ID'),
+          scenarioId: z.number().int().describe("Scenario ID"),
+          stepId: z.number().int().describe("Step ID"),
         },
       },
       async ({ scenarioId, stepId }) => {
         try {
           await this.scenarioService.removeStep(scenarioId, stepId);
-          return { content: [{ type: 'text' as const, text: `Step ${stepId} deleted from scenario ${scenarioId}` }] };
+          return {
+            content: [
+              {
+                type: "text" as const,
+                text: `Step ${stepId} deleted from scenario ${scenarioId}`,
+              },
+            ],
+          };
         } catch (err) {
-          return { isError: true, content: [{ type: 'text' as const, text: (err as Error).message }] };
+          return {
+            isError: true,
+            content: [{ type: "text" as const, text: (err as Error).message }],
+          };
         }
       },
     );
 
     server.registerTool(
-      'list_scenario_runs',
+      "list_scenario_runs",
       {
-        description: 'List runs for a scenario (paginated, optionally filtered by status)',
+        description:
+          "List runs for a scenario (paginated, optionally filtered by status)",
         inputSchema: {
-          scenarioId: z.number().int().describe('Scenario ID'),
-          status: z.enum(['pending', 'in_progress', 'pass', 'fail']).optional().describe('Filter by run status'),
-          page: z.number().int().min(1).optional().describe('Page number (default 1)'),
-          limit: z.number().int().min(1).optional().describe('Items per page (default 20)'),
+          scenarioId: z.number().int().describe("Scenario ID"),
+          status: z
+            .enum(["pending", "in_progress", "pass", "fail"])
+            .optional()
+            .describe("Filter by run status"),
+          page: z
+            .number()
+            .int()
+            .min(1)
+            .optional()
+            .describe("Page number (default 1)"),
+          limit: z
+            .number()
+            .int()
+            .min(1)
+            .optional()
+            .describe("Items per page (default 20)"),
         },
       },
       async ({ scenarioId, status, page, limit }) => {
         try {
-          const result = await this.scenarioService.findRuns(scenarioId, { status, page, limit });
-          return { content: [{ type: 'text' as const, text: JSON.stringify(result) }] };
+          const result = await this.scenarioService.findRuns(scenarioId, {
+            status,
+            page,
+            limit,
+          });
+          return {
+            content: [{ type: "text" as const, text: JSON.stringify(result) }],
+          };
         } catch (err) {
-          return { isError: true, content: [{ type: 'text' as const, text: (err as Error).message }] };
+          return {
+            isError: true,
+            content: [{ type: "text" as const, text: (err as Error).message }],
+          };
         }
       },
     );
 
     server.registerTool(
-      'run_scenario',
+      "run_scenario",
       {
-        description: 'Trigger an immediate run of a scenario by ID',
+        description: "Trigger an immediate run of a scenario by ID",
         inputSchema: {
-          id: z.number().int().describe('Scenario ID to run'),
+          id: z.number().int().describe("Scenario ID to run"),
         },
       },
       async ({ id }) => {
         try {
           const run = await this.scenarioService.createRun(id);
-          return { content: [{ type: 'text' as const, text: JSON.stringify(run) }] };
+          return {
+            content: [{ type: "text" as const, text: JSON.stringify(run) }],
+          };
         } catch (err) {
-          return { isError: true, content: [{ type: 'text' as const, text: (err as Error).message }] };
+          return {
+            isError: true,
+            content: [{ type: "text" as const, text: (err as Error).message }],
+          };
         }
       },
     );
@@ -455,7 +736,9 @@ export class McpService {
 
   async handle(req: Request, res: Response): Promise<void> {
     const server = this.createServer();
-    const transport = new StreamableHTTPServerTransport({ sessionIdGenerator: undefined });
+    const transport = new StreamableHTTPServerTransport({
+      sessionIdGenerator: undefined,
+    });
     await server.connect(transport);
     try {
       await transport.handleRequest(req, res, req.body);
diff --git a/src/scenario/dto/create-scenario-step.dto.ts b/src/scenario/dto/create-scenario-step.dto.ts
index d2da3e3..b8afa1b 100644
--- a/src/scenario/dto/create-scenario-step.dto.ts
+++ b/src/scenario/dto/create-scenario-step.dto.ts
@@ -1,29 +1,43 @@
-import { ApiProperty, ApiPropertyOptional } from '@nestjs/swagger';
-import { IsIn, IsInt, IsNotEmpty, IsOptional, IsString, Min } from 'class-validator';
-import { StepType } from '../scenario-step.entity';
+import { ApiProperty, ApiPropertyOptional } from "@nestjs/swagger";
+import {
+  IsIn,
+  IsInt,
+  IsNotEmpty,
+  IsOptional,
+  IsString,
+  Min,
+} from "class-validator";
+import { StepType } from "../scenario-step.entity";
 
 export class CreateScenarioStepDto {
-  @ApiProperty({ example: 0, description: 'Execution order (ascending)' })
+  @ApiProperty({ example: 0, description: "Execution order (ascending)" })
   @IsInt()
   @Min(0)
   order: number;
 
-  @ApiProperty({ enum: ['login', 'exec', 'sign'], example: 'exec' })
-  @IsIn(['login', 'exec', 'sign'])
+  @ApiProperty({ enum: ["login", "exec", "sign"], example: "exec" })
+  @IsIn(["login", "exec", "sign"])
   type: StepType;
 
-  @ApiProperty({ description: 'Session name used by this step. login steps create it; exec steps consume it.', example: 'my-session' })
+  @ApiProperty({
+    description:
+      "Session name used by this step. login steps create it; exec steps consume it.",
+    example: "my-session",
+  })
   @IsString()
   @IsNotEmpty()
   sessionName: string;
 
-  @ApiPropertyOptional({ example: 'return await page.title();' })
+  @ApiPropertyOptional({ example: "return await page.title();" })
   @IsOptional()
   @IsString()
   @IsNotEmpty()
   execCode?: string;
 
-  @ApiPropertyOptional({ example: 'return { success: result !== null, description: "title present" };' })
+  @ApiPropertyOptional({
+    example:
+      'return { success: result !== null, description: "title present" };',
+  })
   @IsOptional()
   @IsString()
   @IsNotEmpty()
diff --git a/src/scenario/dto/create-scenario.dto.ts b/src/scenario/dto/create-scenario.dto.ts
index 0d3b8f2..b62a60c 100644
--- a/src/scenario/dto/create-scenario.dto.ts
+++ b/src/scenario/dto/create-scenario.dto.ts
@@ -1,8 +1,8 @@
-import { ApiProperty } from '@nestjs/swagger';
-import { IsNotEmpty, IsString } from 'class-validator';
+import { ApiProperty } from "@nestjs/swagger";
+import { IsNotEmpty, IsString } from "class-validator";
 
 export class CreateScenarioDto {
-  @ApiProperty({ example: 'Login and verify cabinet' })
+  @ApiProperty({ example: "Login and verify cabinet" })
   @IsString()
   @IsNotEmpty()
   name: string;
diff --git a/src/scenario/dto/pagination-query.dto.ts b/src/scenario/dto/pagination-query.dto.ts
index 0a5f39c..1445957 100644
--- a/src/scenario/dto/pagination-query.dto.ts
+++ b/src/scenario/dto/pagination-query.dto.ts
@@ -1 +1 @@
-export { PaginationQueryDto } from '../../common/dto/pagination.dto';
+export { PaginationQueryDto } from "../../common/dto/pagination.dto";
diff --git a/src/scenario/dto/runs-query.dto.ts b/src/scenario/dto/runs-query.dto.ts
index 8e2410b..2100afc 100644
--- a/src/scenario/dto/runs-query.dto.ts
+++ b/src/scenario/dto/runs-query.dto.ts
@@ -1,7 +1,7 @@
-import { ApiPropertyOptional } from '@nestjs/swagger';
-import { Type } from 'class-transformer';
-import { IsIn, IsInt, IsOptional, Min } from 'class-validator';
-import { RunStatus } from '../scenario-run.entity';
+import { ApiPropertyOptional } from "@nestjs/swagger";
+import { Type } from "class-transformer";
+import { IsIn, IsInt, IsOptional, Min } from "class-validator";
+import { RunStatus } from "../scenario-run.entity";
 
 export class RunsQueryDto {
   @ApiPropertyOptional({ example: 1, default: 1 })
@@ -19,10 +19,10 @@ export class RunsQueryDto {
   limit?: number = 20;
 
   @ApiPropertyOptional({
-    enum: ['pending', 'in_progress', 'pass', 'fail'],
-    description: 'Filter by run status',
+    enum: ["pending", "in_progress", "pass", "fail"],
+    description: "Filter by run status",
   })
   @IsOptional()
-  @IsIn(['pending', 'in_progress', 'pass', 'fail'])
+  @IsIn(["pending", "in_progress", "pass", "fail"])
   status?: RunStatus;
 }
diff --git a/src/scenario/dto/scenario-export.dto.ts b/src/scenario/dto/scenario-export.dto.ts
index a1ebf75..cb43293 100644
--- a/src/scenario/dto/scenario-export.dto.ts
+++ b/src/scenario/dto/scenario-export.dto.ts
@@ -1,5 +1,5 @@
-import { ApiProperty, ApiPropertyOptional } from '@nestjs/swagger';
-import { Type } from 'class-transformer';
+import { ApiProperty, ApiPropertyOptional } from "@nestjs/swagger";
+import { Type } from "class-transformer";
 import {
   IsArray,
   IsIn,
@@ -9,8 +9,8 @@ import {
   IsString,
   Min,
   ValidateNested,
-} from 'class-validator';
-import { StepType } from '../scenario-step.entity';
+} from "class-validator";
+import { StepType } from "../scenario-step.entity";
 
 export class ScenarioStepExportDto {
   @ApiProperty()
@@ -18,8 +18,8 @@ export class ScenarioStepExportDto {
   @Min(0)
   order: number;
 
-  @ApiProperty({ enum: ['login', 'exec', 'sign'] })
-  @IsIn(['login', 'exec', 'sign'])
+  @ApiProperty({ enum: ["login", "exec", "sign"] })
+  @IsIn(["login", "exec", "sign"])
   type: StepType;
 
   @ApiProperty()
diff --git a/src/scenario/dto/update-scenario-step.dto.ts b/src/scenario/dto/update-scenario-step.dto.ts
index 651afd7..f9e81c5 100644
--- a/src/scenario/dto/update-scenario-step.dto.ts
+++ b/src/scenario/dto/update-scenario-step.dto.ts
@@ -1,6 +1,13 @@
-import { ApiPropertyOptional } from '@nestjs/swagger';
-import { IsIn, IsInt, IsNotEmpty, IsOptional, IsString, Min } from 'class-validator';
-import { StepType } from '../scenario-step.entity';
+import { ApiPropertyOptional } from "@nestjs/swagger";
+import {
+  IsIn,
+  IsInt,
+  IsNotEmpty,
+  IsOptional,
+  IsString,
+  Min,
+} from "class-validator";
+import { StepType } from "../scenario-step.entity";
 
 export class UpdateScenarioStepDto {
   @ApiPropertyOptional({ example: 0 })
@@ -9,9 +16,9 @@ export class UpdateScenarioStepDto {
   @Min(0)
   order?: number;
 
-  @ApiPropertyOptional({ enum: ['login', 'exec', 'sign'] })
+  @ApiPropertyOptional({ enum: ["login", "exec", "sign"] })
   @IsOptional()
-  @IsIn(['login', 'exec', 'sign'])
+  @IsIn(["login", "exec", "sign"])
   type?: StepType;
 
   @ApiPropertyOptional()
diff --git a/src/scenario/dto/update-scenario.dto.ts b/src/scenario/dto/update-scenario.dto.ts
index f4d5dbf..6c7f215 100644
--- a/src/scenario/dto/update-scenario.dto.ts
+++ b/src/scenario/dto/update-scenario.dto.ts
@@ -1,8 +1,8 @@
-import { ApiPropertyOptional } from '@nestjs/swagger';
-import { IsOptional, IsString, IsNotEmpty } from 'class-validator';
+import { ApiPropertyOptional } from "@nestjs/swagger";
+import { IsOptional, IsString, IsNotEmpty } from "class-validator";
 
 export class UpdateScenarioDto {
-  @ApiPropertyOptional({ example: 'Updated scenario name' })
+  @ApiPropertyOptional({ example: "Updated scenario name" })
   @IsOptional()
   @IsString()
   @IsNotEmpty()
diff --git a/src/scenario/scenario-run-log.entity.ts b/src/scenario/scenario-run-log.entity.ts
new file mode 100644
index 0000000..c11d5db
--- /dev/null
+++ b/src/scenario/scenario-run-log.entity.ts
@@ -0,0 +1,44 @@
+import {
+  Entity,
+  PrimaryGeneratedColumn,
+  Column,
+  CreateDateColumn,
+  ManyToOne,
+  JoinColumn,
+} from "typeorm";
+import { ScenarioRunEntity } from "./scenario-run.entity";
+import { ScenarioRunStepEntity } from "./scenario-run-step.entity";
+
+export type LogLevel = "log" | "warn" | "error";
+
+@Entity("scenario_run_logs")
+export class ScenarioRunLogEntity {
+  @PrimaryGeneratedColumn()
+  id: number;
+
+  @Column()
+  runId: number;
+
+  @ManyToOne(() => ScenarioRunEntity, { onDelete: "CASCADE" })
+  @JoinColumn({ name: "runId" })
+  run: ScenarioRunEntity;
+
+  @Column({ nullable: true })
+  stepRunId: number | null;
+
+  @ManyToOne(() => ScenarioRunStepEntity, {
+    onDelete: "SET NULL",
+    nullable: true,
+  })
+  @JoinColumn({ name: "stepRunId" })
+  stepRun: ScenarioRunStepEntity | null;
+
+  @Column({ type: "text", default: "log" })
+  level: LogLevel;
+
+  @Column({ type: "text" })
+  message: string;
+
+  @CreateDateColumn()
+  createdAt: Date;
+}
diff --git a/src/scenario/scenario-run-step.entity.ts b/src/scenario/scenario-run-step.entity.ts
index e465777..9eacdcc 100644
--- a/src/scenario/scenario-run-step.entity.ts
+++ b/src/scenario/scenario-run-step.entity.ts
@@ -6,13 +6,19 @@ import {
   UpdateDateColumn,
   ManyToOne,
   JoinColumn,
-} from 'typeorm';
-import { ScenarioRunEntity } from './scenario-run.entity';
-import { ScenarioStepEntity } from './scenario-step.entity';
+} from "typeorm";
+import { ScenarioRunEntity } from "./scenario-run.entity";
+import { ScenarioStepEntity } from "./scenario-step.entity";
 
-export type RunStepStatus = 'waiting' | 'pending' | 'in_progress' | 'pass' | 'fail' | 'cancelled';
+export type RunStepStatus =
+  | "waiting"
+  | "pending"
+  | "in_progress"
+  | "pass"
+  | "fail"
+  | "cancelled";
 
-@Entity('scenario_run_steps')
+@Entity("scenario_run_steps")
 export class ScenarioRunStepEntity {
   @PrimaryGeneratedColumn()
   id: number;
@@ -20,24 +26,26 @@ export class ScenarioRunStepEntity {
   @Column()
   runId: number;
 
-  @ManyToOne(() => ScenarioRunEntity, (run) => run.stepRuns, { onDelete: 'CASCADE' })
-  @JoinColumn({ name: 'runId' })
+  @ManyToOne(() => ScenarioRunEntity, (run) => run.stepRuns, {
+    onDelete: "CASCADE",
+  })
+  @JoinColumn({ name: "runId" })
   run: ScenarioRunEntity;
 
   @Column()
   scenarioStepId: number;
 
-  @ManyToOne(() => ScenarioStepEntity, { onDelete: 'CASCADE' })
-  @JoinColumn({ name: 'scenarioStepId' })
+  @ManyToOne(() => ScenarioStepEntity, { onDelete: "CASCADE" })
+  @JoinColumn({ name: "scenarioStepId" })
   scenarioStep: ScenarioStepEntity;
 
-  @Column({ type: 'text', default: 'waiting' })
+  @Column({ type: "text", default: "waiting" })
   status: RunStepStatus;
 
   @Column({ default: 0 })
   order: number;
 
-  @Column({ type: 'text', nullable: true })
+  @Column({ type: "text", nullable: true })
   description: string | null;
 
   @CreateDateColumn()
diff --git a/src/scenario/scenario-run.entity.ts b/src/scenario/scenario-run.entity.ts
index 890f8f9..f93dcca 100644
--- a/src/scenario/scenario-run.entity.ts
+++ b/src/scenario/scenario-run.entity.ts
@@ -7,13 +7,13 @@ import {
   ManyToOne,
   OneToMany,
   JoinColumn,
-} from 'typeorm';
-import { ScenarioEntity } from './scenario.entity';
-import { ScenarioRunStepEntity } from './scenario-run-step.entity';
+} from "typeorm";
+import { ScenarioEntity } from "./scenario.entity";
+import { ScenarioRunStepEntity } from "./scenario-run-step.entity";
 
-export type RunStatus = 'pending' | 'in_progress' | 'pass' | 'fail';
+export type RunStatus = "pending" | "in_progress" | "pass" | "fail";
 
-@Entity('scenario_runs')
+@Entity("scenario_runs")
 export class ScenarioRunEntity {
   @PrimaryGeneratedColumn()
   id: number;
@@ -21,11 +21,11 @@ export class ScenarioRunEntity {
   @Column()
   scenarioId: number;
 
-  @ManyToOne(() => ScenarioEntity, { onDelete: 'CASCADE' })
-  @JoinColumn({ name: 'scenarioId' })
+  @ManyToOne(() => ScenarioEntity, { onDelete: "CASCADE" })
+  @JoinColumn({ name: "scenarioId" })
   scenario: ScenarioEntity;
 
-  @Column({ type: 'text', default: 'pending' })
+  @Column({ type: "text", default: "pending" })
   status: RunStatus;
 
   @OneToMany(() => ScenarioRunStepEntity, (rs) => rs.run, {
diff --git a/src/scenario/scenario-scheduler.service.ts b/src/scenario/scenario-scheduler.service.ts
index 018b493..6d5af1e 100644
--- a/src/scenario/scenario-scheduler.service.ts
+++ b/src/scenario/scenario-scheduler.service.ts
@@ -1,19 +1,20 @@
-import { Injectable } from '@nestjs/common';
-import { TraceLogger } from '../common/trace-logger';
-import { traceStorage } from '../common/trace-context';
-import { Interval } from '@nestjs/schedule';
-import { InjectRepository } from '@nestjs/typeorm';
-import { Repository } from 'typeorm';
-import * as crypto from 'crypto';
-import { chromium } from 'playwright';
-import type { Browser, BrowserContext, Page } from 'playwright';
-import { ScenarioRunEntity } from './scenario-run.entity';
-import { ScenarioRunStepEntity } from './scenario-run-step.entity';
-import { ScenarioStepEntity } from './scenario-step.entity';
-import type { ScriptLogger } from '../code-executor/code-executor.service';
-import { AuthService } from '../auth/auth.service';
-import { CodeExecutorService } from '../code-executor/code-executor.service';
-import { SessionService } from '../session/session.service';
+import { Injectable } from "@nestjs/common";
+import { TraceLogger } from "../common/trace-logger";
+import { traceStorage } from "../common/trace-context";
+import { Interval } from "@nestjs/schedule";
+import { InjectRepository } from "@nestjs/typeorm";
+import { Repository } from "typeorm";
+import * as crypto from "crypto";
+import { chromium } from "playwright";
+import type { Browser, BrowserContext, Page } from "playwright";
+import { ScenarioRunEntity } from "./scenario-run.entity";
+import { ScenarioRunStepEntity } from "./scenario-run-step.entity";
+import { ScenarioRunLogEntity } from "./scenario-run-log.entity";
+import { ScenarioStepEntity } from "./scenario-step.entity";
+import type { ScriptLogger } from "../code-executor/code-executor.service";
+import { AuthService } from "../auth/auth.service";
+import { CodeExecutorService } from "../code-executor/code-executor.service";
+import { SessionService } from "../session/session.service";
 
 interface ValidateResult {
   success: boolean;
@@ -37,49 +38,69 @@ export class ScenarioSchedulerService {
     private readonly runRepo: Repository<ScenarioRunEntity>,
     @InjectRepository(ScenarioRunStepEntity)
     private readonly runStepRepo: Repository<ScenarioRunStepEntity>,
+    @InjectRepository(ScenarioRunLogEntity)
+    private readonly runLogRepo: Repository<ScenarioRunLogEntity>,
     private readonly authService: AuthService,
     private readonly codeExecutor: CodeExecutorService,
     private readonly sessionService: SessionService,
   ) {}
 
-  private stepLogger(stepRunId: number): ScriptLogger {
-    return (level, msg) => this.logger[level](`StepRun #${stepRunId} script: ${msg}`);
+  private persistLog(
+    runId: number,
+    stepRunId: number | null,
+    level: "log" | "warn" | "error",
+    message: string,
+  ): void {
+    void this.runLogRepo.save(
+      this.runLogRepo.create({ runId, stepRunId, level, message }),
+    );
+  }
+
+  private stepLogger(stepRunId: number, runId: number): ScriptLogger {
+    return (level, msg) => {
+      this.logger[level](`StepRun #${stepRunId} script: ${msg}`);
+      this.persistLog(runId, stepRunId, level, msg);
+    };
   }
 
   // ── Job: pick up pending runs and process each to completion ─────────────
 
   @Interval(1000)
   async pickUpPendingRuns(): Promise<void> {
-    const pending = await this.runRepo.find({ where: { status: 'pending' } });
+    const pending = await this.runRepo.find({ where: { status: "pending" } });
     for (const run of pending) {
       if (this.activeRuns.has(run.id)) continue;
       this.activeRuns.add(run.id);
-      run.status = 'in_progress';
+      run.status = "in_progress";
       await this.runRepo.save(run);
       this.logger.log(`Run #${run.id} → in_progress`);
       const traceId = crypto.randomUUID();
-      void traceStorage.run({ traceId }, () => this.processRunToCompletion(run.id));
+      void traceStorage.run({ traceId }, () =>
+        this.processRunToCompletion(run.id),
+      );
     }
   }
 
   private async processRunToCompletion(runId: number): Promise<void> {
     try {
       let stepRun = await this.runStepRepo.findOne({
-        where: { runId, status: 'pending' },
-        relations: ['scenarioStep'],
-        order: { order: 'ASC' },
+        where: { runId, status: "pending" },
+        relations: ["scenarioStep"],
+        order: { order: "ASC" },
       });
       while (stepRun) {
         await this.executeStepRun(stepRun);
         stepRun = await this.runStepRepo.findOne({
-          where: { runId, status: 'pending' },
-          relations: ['scenarioStep'],
-          order: { order: 'ASC' },
+          where: { runId, status: "pending" },
+          relations: ["scenarioStep"],
+          order: { order: "ASC" },
         });
       }
     } catch (err) {
-      this.logger.error(`Run #${runId}: unexpected error: ${(err as Error).message}`);
-      await this.runRepo.update(runId, { status: 'fail' });
+      this.logger.error(
+        `Run #${runId}: unexpected error: ${(err as Error).message}`,
+      );
+      await this.runRepo.update(runId, { status: "fail" });
     } finally {
       this.activeRuns.delete(runId);
     }
@@ -88,14 +109,16 @@ export class ScenarioSchedulerService {
   private async executeStepRun(stepRun: ScenarioRunStepEntity): Promise<void> {
     const step = stepRun.scenarioStep as ScenarioStepEntity;
 
-    stepRun.status = 'in_progress';
+    stepRun.status = "in_progress";
     await this.runStepRepo.save(stepRun);
-    this.logger.log(`StepRun #${stepRun.id} (run #${stepRun.runId}, step #${step.id} order=${step.order}) → in_progress`);
+    this.logger.log(
+      `StepRun #${stepRun.id} (run #${stepRun.runId}, step #${step.id} order=${step.order}) → in_progress`,
+    );
 
     try {
-      if (step.type === 'login') {
+      if (step.type === "login") {
         await this.executeLoginStep(stepRun, step);
-      } else if (step.type === 'sign') {
+      } else if (step.type === "sign") {
         await this.executeSignStep(stepRun, step);
       } else {
         await this.executeExecStep(stepRun, step);
@@ -109,24 +132,33 @@ export class ScenarioSchedulerService {
 
   // ── Shared browser per run ─────────────────────────────────────────────────
 
-  private async getOrCreateBrowserHandle(runId: number, sessionName: string): Promise<BrowserHandle> {
+  private async getOrCreateBrowserHandle(
+    runId: number,
+    sessionName: string,
+  ): Promise<BrowserHandle> {
     const existing = this.runBrowsers.get(runId);
     if (existing) return existing;
 
     const session = await this.sessionService.findBySessionName(sessionName);
     if (!session) throw new Error(`Session not found: ${sessionName}`);
 
-    const cookies = JSON.parse(session.cookies) as Parameters<BrowserContext['addCookies']>[0];
-    const localStorageData: Record<string, string> = JSON.parse(session.localStorage);
+    const cookies = JSON.parse(session.cookies) as Parameters<
+      BrowserContext["addCookies"]
+    >[0];
+    const localStorageData: Record<string, string> = JSON.parse(
+      session.localStorage,
+    );
 
     const browser = await chromium.launch({
       headless: true,
+      // TODO: env var move to config
       executablePath: process.env.PLAYWRIGHT_CHROMIUM_EXECUTABLE_PATH,
     });
     const context = await browser.newContext();
     await context.addCookies(cookies);
     await context.addInitScript((entries: Record<string, string>) => {
-      for (const [k, v] of Object.entries(entries)) window.localStorage.setItem(k, v);
+      for (const [k, v] of Object.entries(entries))
+        window.localStorage.setItem(k, v);
     }, localStorageData);
     const page = await context.newPage();
 
@@ -144,33 +176,56 @@ export class ScenarioSchedulerService {
       await handle.browser.close();
       this.logger.log(`Run #${runId}: browser closed`);
     } catch (err) {
-      this.logger.warn(`Run #${runId}: error closing browser: ${(err as Error).message}`);
+      this.logger.warn(
+        `Run #${runId}: error closing browser: ${(err as Error).message}`,
+      );
     }
   }
 
   // ── Login step ─────────────────────────────────────────────────────────────
 
-  private async executeLoginStep(stepRun: ScenarioRunStepEntity, step: ScenarioStepEntity): Promise<void> {
+  private async executeLoginStep(
+    stepRun: ScenarioRunStepEntity,
+    step: ScenarioStepEntity,
+  ): Promise<void> {
     // execCode must be a JSON object: { "keyId": "...", "environmentName": "..." }
     let params: { keyId: string; environmentName: string };
     try {
-      params = JSON.parse(step.execCode ?? '{}');
+      params = JSON.parse(step.execCode ?? "{}");
     } catch {
-      throw new Error('login step execCode must be valid JSON with keyId and environmentName');
+      throw new Error(
+        "login step execCode must be valid JSON with keyId and environmentName",
+      );
     }
     if (!params.keyId || !params.environmentName) {
-      throw new Error('login step execCode must include keyId and environmentName');
+      throw new Error(
+        "login step execCode must include keyId and environmentName",
+      );
     }
 
-    const loginResult = await this.authService.login(params.keyId, params.environmentName, step.sessionName);
-    this.logger.log(`StepRun #${stepRun.id}: login OK, session=${loginResult.sessionName}`);
+    const loginResult = await this.authService.login(
+      params.keyId,
+      params.environmentName,
+      step.sessionName,
+    );
+    this.logger.log(
+      `StepRun #${stepRun.id}: login OK, session=${loginResult.sessionName}`,
+    );
 
     if (step.validateCode) {
-      const { page, context } = await this.getOrCreateBrowserHandle(stepRun.runId, step.sessionName);
+      const { page, context } = await this.getOrCreateBrowserHandle(
+        stepRun.runId,
+        step.sessionName,
+      );
       this.codeExecutor.validate(step.validateCode);
-      const { result } = await this.codeExecutor.execute(page, context, step.validateCode, this.stepLogger(stepRun.id));
+      const { result } = await this.codeExecutor.execute(
+        page,
+        context,
+        step.validateCode,
+        this.stepLogger(stepRun.id, stepRun.runId),
+      );
       const vr = this.parseValidateResult(result);
-      if (!vr.success) throw new Error(vr.description ?? 'Validation failed');
+      if (!vr.success) throw new Error(vr.description ?? "Validation failed");
     }
 
     await this.passStepRun(stepRun, null);
@@ -178,19 +233,35 @@ export class ScenarioSchedulerService {
 
   // ── Exec step ──────────────────────────────────────────────────────────────
 
-  private async executeExecStep(stepRun: ScenarioRunStepEntity, step: ScenarioStepEntity): Promise<void> {
-    if (!step.execCode) throw new Error('exec step has no execCode');
+  private async executeExecStep(
+    stepRun: ScenarioRunStepEntity,
+    step: ScenarioStepEntity,
+  ): Promise<void> {
+    if (!step.execCode) throw new Error("exec step has no execCode");
 
     this.codeExecutor.validate(step.execCode);
-    const { page, context } = await this.getOrCreateBrowserHandle(stepRun.runId, step.sessionName);
-    await this.codeExecutor.execute(page, context, step.execCode, this.stepLogger(stepRun.id));
+    const { page, context } = await this.getOrCreateBrowserHandle(
+      stepRun.runId,
+      step.sessionName,
+    );
+    await this.codeExecutor.execute(
+      page,
+      context,
+      step.execCode,
+      this.stepLogger(stepRun.id, stepRun.runId),
+    );
     this.logger.log(`StepRun #${stepRun.id}: exec OK`);
 
     if (step.validateCode) {
       this.codeExecutor.validate(step.validateCode);
-      const { result } = await this.codeExecutor.execute(page, context, step.validateCode, this.stepLogger(stepRun.id));
+      const { result } = await this.codeExecutor.execute(
+        page,
+        context,
+        step.validateCode,
+        this.stepLogger(stepRun.id, stepRun.runId),
+      );
       const vr = this.parseValidateResult(result);
-      if (!vr.success) throw new Error(vr.description ?? 'Validation failed');
+      if (!vr.success) throw new Error(vr.description ?? "Validation failed");
     }
 
     await this.passStepRun(stepRun, null);
@@ -198,25 +269,36 @@ export class ScenarioSchedulerService {
 
   // ── Sign step ──────────────────────────────────────────────────────────────
 
-  private async executeSignStep(stepRun: ScenarioRunStepEntity, step: ScenarioStepEntity): Promise<void> {
+  private async executeSignStep(
+    stepRun: ScenarioRunStepEntity,
+    step: ScenarioStepEntity,
+  ): Promise<void> {
     // execCode must be a JSON object: { "keyId": "..." }
     let params: { keyId: string };
     try {
-      params = JSON.parse(step.execCode ?? '{}');
+      params = JSON.parse(step.execCode ?? "{}");
     } catch {
-      throw new Error('sign step execCode must be valid JSON with keyId');
+      throw new Error("sign step execCode must be valid JSON with keyId");
     }
-    if (!params.keyId) throw new Error('sign step execCode must include keyId');
+    if (!params.keyId) throw new Error("sign step execCode must include keyId");
 
-    const { page, context } = await this.getOrCreateBrowserHandle(stepRun.runId, step.sessionName);
+    const { page, context } = await this.getOrCreateBrowserHandle(
+      stepRun.runId,
+      step.sessionName,
+    );
     await this.authService.signWithKey(params.keyId, page);
     this.logger.log(`StepRun #${stepRun.id}: sign OK`);
 
     if (step.validateCode) {
       this.codeExecutor.validate(step.validateCode);
-      const { result } = await this.codeExecutor.execute(page, context, step.validateCode, this.stepLogger(stepRun.id));
+      const { result } = await this.codeExecutor.execute(
+        page,
+        context,
+        step.validateCode,
+        this.stepLogger(stepRun.id, stepRun.runId),
+      );
       const vr = this.parseValidateResult(result);
-      if (!vr.success) throw new Error(vr.description ?? 'Validation failed');
+      if (!vr.success) throw new Error(vr.description ?? "Validation failed");
     }
 
     await this.passStepRun(stepRun, null);
@@ -225,12 +307,13 @@ export class ScenarioSchedulerService {
   // ── Validation helper ──────────────────────────────────────────────────────
 
   private parseValidateResult(raw: unknown): ValidateResult {
-    if (typeof raw === 'boolean') return { success: raw };
-    if (raw && typeof raw === 'object') {
+    if (typeof raw === "boolean") return { success: raw };
+    if (raw && typeof raw === "object") {
       const r = raw as Record<string, unknown>;
       return {
-        success: Boolean(r['success']),
-        description: r['description'] != null ? String(r['description']) : undefined,
+        success: Boolean(r["success"]),
+        description:
+          r["description"] != null ? String(r["description"]) : undefined,
       };
     }
     return { success: Boolean(raw) };
@@ -238,40 +321,46 @@ export class ScenarioSchedulerService {
 
   // ── Pass / fail helpers ────────────────────────────────────────────────────
 
-  private async passStepRun(stepRun: ScenarioRunStepEntity, description: string | null): Promise<void> {
-    stepRun.status = 'pass';
+  private async passStepRun(
+    stepRun: ScenarioRunStepEntity,
+    description: string | null,
+  ): Promise<void> {
+    stepRun.status = "pass";
     stepRun.description = description;
     await this.runStepRepo.save(stepRun);
     this.logger.log(`StepRun #${stepRun.id} → pass`);
 
     // Find the next waiting step in this run (next by order)
     const nextStep = await this.runStepRepo.findOne({
-      where: { runId: stepRun.runId, status: 'waiting' },
-      order: { order: 'ASC' },
+      where: { runId: stepRun.runId, status: "waiting" },
+      order: { order: "ASC" },
     });
 
     if (nextStep) {
-      nextStep.status = 'pending';
+      nextStep.status = "pending";
       await this.runStepRepo.save(nextStep);
     } else {
       // No more waiting steps — check if any are still in_progress/pending (shouldn't be, but guard anyway)
       const remaining = await this.runStepRepo.count({
         where: [
-          { runId: stepRun.runId, status: 'pending' },
-          { runId: stepRun.runId, status: 'in_progress' },
-          { runId: stepRun.runId, status: 'waiting' },
+          { runId: stepRun.runId, status: "pending" },
+          { runId: stepRun.runId, status: "in_progress" },
+          { runId: stepRun.runId, status: "waiting" },
         ],
       });
       if (remaining === 0) {
         await this.closeBrowserHandle(stepRun.runId);
-        await this.runRepo.update(stepRun.runId, { status: 'pass' });
+        await this.runRepo.update(stepRun.runId, { status: "pass" });
         this.logger.log(`Run #${stepRun.runId} → pass (all steps passed)`);
       }
     }
   }
 
-  private async failStepRun(stepRun: ScenarioRunStepEntity, description: string): Promise<void> {
-    stepRun.status = 'fail';
+  private async failStepRun(
+    stepRun: ScenarioRunStepEntity,
+    description: string,
+  ): Promise<void> {
+    stepRun.status = "fail";
     stepRun.description = description;
     await this.runStepRepo.save(stepRun);
     this.logger.log(`StepRun #${stepRun.id} → fail: ${description}`);
@@ -280,17 +369,17 @@ export class ScenarioSchedulerService {
     await this.runStepRepo
       .createQueryBuilder()
       .update()
-      .set({ status: 'cancelled' })
-      .where('runId = :runId AND status IN (:...statuses)', {
+      .set({ status: "cancelled" })
+      .where("runId = :runId AND status IN (:...statuses)", {
         runId: stepRun.runId,
-        statuses: ['waiting', 'pending'],
+        statuses: ["waiting", "pending"],
       })
       .execute();
 
     this.logger.log(`Run #${stepRun.runId}: remaining steps cancelled`);
 
     await this.closeBrowserHandle(stepRun.runId);
-    await this.runRepo.update(stepRun.runId, { status: 'fail' });
+    await this.runRepo.update(stepRun.runId, { status: "fail" });
     this.logger.log(`Run #${stepRun.runId} → fail`);
   }
 }
diff --git a/src/scenario/scenario-step.entity.ts b/src/scenario/scenario-step.entity.ts
index d2ca907..736369c 100644
--- a/src/scenario/scenario-step.entity.ts
+++ b/src/scenario/scenario-step.entity.ts
@@ -6,12 +6,12 @@ import {
   UpdateDateColumn,
   ManyToOne,
   JoinColumn,
-} from 'typeorm';
-import { ScenarioEntity } from './scenario.entity';
+} from "typeorm";
+import { ScenarioEntity } from "./scenario.entity";
 
-export type StepType = 'login' | 'exec' | 'sign';
+export type StepType = "login" | "exec" | "sign";
 
-@Entity('scenario_steps')
+@Entity("scenario_steps")
 export class ScenarioStepEntity {
   @PrimaryGeneratedColumn()
   id: number;
@@ -20,24 +20,24 @@ export class ScenarioStepEntity {
   scenarioId: number;
 
   @ManyToOne(() => ScenarioEntity, (scenario) => scenario.steps, {
-    onDelete: 'CASCADE',
+    onDelete: "CASCADE",
   })
-  @JoinColumn({ name: 'scenarioId' })
+  @JoinColumn({ name: "scenarioId" })
   scenario: ScenarioEntity;
 
   @Column({ default: 0 })
   order: number;
 
-  @Column({ type: 'text' })
+  @Column({ type: "text" })
   type: StepType;
 
-  @Column({ type: 'text' })
+  @Column({ type: "text" })
   sessionName: string;
 
-  @Column({ type: 'text', nullable: true })
+  @Column({ type: "text", nullable: true })
   execCode: string | null;
 
-  @Column({ type: 'text', nullable: true })
+  @Column({ type: "text", nullable: true })
   validateCode: string | null;
 
   @CreateDateColumn()
diff --git a/src/scenario/scenario.controller.ts b/src/scenario/scenario.controller.ts
index 5c3046c..a2e4c41 100644
--- a/src/scenario/scenario.controller.ts
+++ b/src/scenario/scenario.controller.ts
@@ -9,145 +9,176 @@ import {
   Patch,
   Post,
   Query,
-} from '@nestjs/common';
-import { ApiOperation, ApiResponse, ApiTags } from '@nestjs/swagger';
-import { ScenarioService } from './scenario.service';
-import { CreateScenarioDto } from './dto/create-scenario.dto';
-import { UpdateScenarioDto } from './dto/update-scenario.dto';
-import { CreateScenarioStepDto } from './dto/create-scenario-step.dto';
-import { UpdateScenarioStepDto } from './dto/update-scenario-step.dto';
-import { PaginationQueryDto } from './dto/pagination-query.dto';
-import { ScenarioOrderBy } from './scenario.service';
-import { RunsQueryDto } from './dto/runs-query.dto';
-import { ScenarioExportDto } from './dto/scenario-export.dto';
+} from "@nestjs/common";
+import { ApiOperation, ApiResponse, ApiTags } from "@nestjs/swagger";
+import { ScenarioService } from "./scenario.service";
+import { CreateScenarioDto } from "./dto/create-scenario.dto";
+import { UpdateScenarioDto } from "./dto/update-scenario.dto";
+import { CreateScenarioStepDto } from "./dto/create-scenario-step.dto";
+import { UpdateScenarioStepDto } from "./dto/update-scenario-step.dto";
+import { PaginationQueryDto } from "./dto/pagination-query.dto";
+import { ScenarioOrderBy } from "./scenario.service";
+import { RunsQueryDto } from "./dto/runs-query.dto";
+import { ScenarioExportDto } from "./dto/scenario-export.dto";
 
-@ApiTags('scenarios')
-@Controller('scenarios')
+@ApiTags("scenarios")
+@Controller("scenarios")
 export class ScenarioController {
   constructor(private readonly scenarioService: ScenarioService) {}
 
   // ── Scenarios ─────────────────────────────────────────────────────────────
 
   @Post()
-  @ApiOperation({ summary: 'Create a scenario' })
-  @ApiResponse({ status: 201, description: 'Scenario created' })
+  @ApiOperation({ summary: "Create a scenario" })
+  @ApiResponse({ status: 201, description: "Scenario created" })
   create(@Body() dto: CreateScenarioDto) {
     return this.scenarioService.create(dto);
   }
 
-  @Post('import')
-  @ApiOperation({ summary: 'Import a scenario from an export payload' })
-  @ApiResponse({ status: 201, description: 'Scenario imported' })
+  @Post("import")
+  @ApiOperation({ summary: "Import a scenario from an export payload" })
+  @ApiResponse({ status: 201, description: "Scenario imported" })
   importScenario(@Body() dto: ScenarioExportDto) {
     return this.scenarioService.importScenario(dto);
   }
 
   @Get()
-  @ApiOperation({ summary: 'List all scenarios (paginated)' })
+  @ApiOperation({ summary: "List all scenarios (paginated)" })
   @ApiResponse({ status: 200 })
   findAll(@Query() query: PaginationQueryDto<ScenarioOrderBy>) {
     return this.scenarioService.findAll(query);
   }
 
-  @Get(':id')
-  @ApiOperation({ summary: 'Get a scenario with its steps' })
+  @Get(":id")
+  @ApiOperation({ summary: "Get a scenario with its steps" })
   @ApiResponse({ status: 200 })
-  @ApiResponse({ status: 404, description: 'Scenario not found' })
-  findOne(@Param('id', ParseIntPipe) id: number) {
+  @ApiResponse({ status: 404, description: "Scenario not found" })
+  findOne(@Param("id", ParseIntPipe) id: number) {
     return this.scenarioService.findOne(id);
   }
 
-  @Patch(':id')
-  @ApiOperation({ summary: 'Update a scenario' })
+  @Patch(":id")
+  @ApiOperation({ summary: "Update a scenario" })
   @ApiResponse({ status: 200 })
-  @ApiResponse({ status: 404, description: 'Scenario not found' })
-  update(@Param('id', ParseIntPipe) id: number, @Body() dto: UpdateScenarioDto) {
+  @ApiResponse({ status: 404, description: "Scenario not found" })
+  update(
+    @Param("id", ParseIntPipe) id: number,
+    @Body() dto: UpdateScenarioDto,
+  ) {
     return this.scenarioService.update(id, dto);
   }
 
-  @Delete(':id')
+  @Delete(":id")
   @HttpCode(204)
-  @ApiOperation({ summary: 'Delete a scenario and all its steps' })
+  @ApiOperation({ summary: "Delete a scenario and all its steps" })
   @ApiResponse({ status: 204 })
-  @ApiResponse({ status: 404, description: 'Scenario not found' })
-  remove(@Param('id', ParseIntPipe) id: number) {
+  @ApiResponse({ status: 404, description: "Scenario not found" })
+  remove(@Param("id", ParseIntPipe) id: number) {
     return this.scenarioService.remove(id);
   }
 
-  @Get(':id/export')
-  @ApiOperation({ summary: 'Export a scenario as a portable JSON payload' })
+  @Get(":id/export")
+  @ApiOperation({ summary: "Export a scenario as a portable JSON payload" })
   @ApiResponse({ status: 200 })
-  @ApiResponse({ status: 404, description: 'Scenario not found' })
-  exportScenario(@Param('id', ParseIntPipe) id: number) {
+  @ApiResponse({ status: 404, description: "Scenario not found" })
+  exportScenario(@Param("id", ParseIntPipe) id: number) {
     return this.scenarioService.exportScenario(id);
   }
 
   // ── Steps ─────────────────────────────────────────────────────────────────
 
-  @Post(':id/steps')
-  @ApiOperation({ summary: 'Add a step to a scenario' })
-  @ApiResponse({ status: 201, description: 'Step created' })
-  @ApiResponse({ status: 404, description: 'Scenario not found' })
+  @Post(":id/steps")
+  @ApiOperation({ summary: "Add a step to a scenario" })
+  @ApiResponse({ status: 201, description: "Step created" })
+  @ApiResponse({ status: 404, description: "Scenario not found" })
   createStep(
-    @Param('id', ParseIntPipe) id: number,
+    @Param("id", ParseIntPipe) id: number,
     @Body() dto: CreateScenarioStepDto,
   ) {
     return this.scenarioService.createStep(id, dto);
   }
 
-  @Get(':id/steps/:stepId')
-  @ApiOperation({ summary: 'Get a single step' })
+  @Get(":id/steps/:stepId")
+  @ApiOperation({ summary: "Get a single step" })
   @ApiResponse({ status: 200 })
-  @ApiResponse({ status: 404, description: 'Scenario or step not found' })
+  @ApiResponse({ status: 404, description: "Scenario or step not found" })
   findStep(
-    @Param('id', ParseIntPipe) id: number,
-    @Param('stepId', ParseIntPipe) stepId: number,
+    @Param("id", ParseIntPipe) id: number,
+    @Param("stepId", ParseIntPipe) stepId: number,
   ) {
     return this.scenarioService.findStep(id, stepId);
   }
 
-  @Patch(':id/steps/:stepId')
-  @ApiOperation({ summary: 'Update a step' })
+  @Patch(":id/steps/:stepId")
+  @ApiOperation({ summary: "Update a step" })
   @ApiResponse({ status: 200 })
-  @ApiResponse({ status: 404, description: 'Scenario or step not found' })
+  @ApiResponse({ status: 404, description: "Scenario or step not found" })
   updateStep(
-    @Param('id', ParseIntPipe) id: number,
-    @Param('stepId', ParseIntPipe) stepId: number,
+    @Param("id", ParseIntPipe) id: number,
+    @Param("stepId", ParseIntPipe) stepId: number,
     @Body() dto: UpdateScenarioStepDto,
   ) {
     return this.scenarioService.updateStep(id, stepId, dto);
   }
 
-  @Delete(':id/steps/:stepId')
+  @Delete(":id/steps/:stepId")
   @HttpCode(204)
-  @ApiOperation({ summary: 'Delete a step' })
+  @ApiOperation({ summary: "Delete a step" })
   @ApiResponse({ status: 204 })
-  @ApiResponse({ status: 404, description: 'Scenario or step not found' })
+  @ApiResponse({ status: 404, description: "Scenario or step not found" })
   removeStep(
-    @Param('id', ParseIntPipe) id: number,
-    @Param('stepId', ParseIntPipe) stepId: number,
+    @Param("id", ParseIntPipe) id: number,
+    @Param("stepId", ParseIntPipe) stepId: number,
   ) {
     return this.scenarioService.removeStep(id, stepId);
   }
 
   // ── Runs ──────────────────────────────────────────────────────────────────
 
-  @Get(':id/runs')
-  @ApiOperation({ summary: 'List runs for a scenario (paginated, filterable by status)' })
+  @Get(":id/runs")
+  @ApiOperation({
+    summary: "List runs for a scenario (paginated, filterable by status)",
+  })
   @ApiResponse({ status: 200 })
-  @ApiResponse({ status: 404, description: 'Scenario not found' })
+  @ApiResponse({ status: 404, description: "Scenario not found" })
   findRuns(
-    @Param('id', ParseIntPipe) id: number,
+    @Param("id", ParseIntPipe) id: number,
     @Query() query: RunsQueryDto,
   ) {
     return this.scenarioService.findRuns(id, query);
   }
 
-  @Post(':id/run')
-  @ApiOperation({ summary: 'Create a new run for a scenario' })
-  @ApiResponse({ status: 201, description: 'Run created with step runs' })
-  @ApiResponse({ status: 404, description: 'Scenario not found' })
-  createRun(@Param('id', ParseIntPipe) id: number) {
+  @Post(":id/run")
+  @ApiOperation({ summary: "Create a new run for a scenario" })
+  @ApiResponse({ status: 201, description: "Run created with step runs" })
+  @ApiResponse({ status: 404, description: "Scenario not found" })
+  createRun(@Param("id", ParseIntPipe) id: number) {
     return this.scenarioService.createRun(id);
   }
+
+  @Get(":id/run/:runId")
+  @ApiOperation({ summary: "Get a specific run with step runs and logs" })
+  @ApiResponse({ status: 200 })
+  @ApiResponse({ status: 404, description: "Scenario or run not found" })
+  findRun(
+    @Param("id", ParseIntPipe) id: number,
+    @Param("runId", ParseIntPipe) runId: number,
+  ) {
+    return this.scenarioService.findRun(id, runId);
+  }
+
+  @Post(":id/run/:runId/wait")
+  @HttpCode(200)
+  @ApiOperation({
+    summary:
+      "Block until the run reaches pass or fail (max 5 min), then return run with logs",
+  })
+  @ApiResponse({ status: 200 })
+  @ApiResponse({ status: 404, description: "Scenario or run not found" })
+  waitForRun(
+    @Param("id", ParseIntPipe) id: number,
+    @Param("runId", ParseIntPipe) runId: number,
+  ) {
+    return this.scenarioService.waitForRun(id, runId);
+  }
 }
diff --git a/src/scenario/scenario.entity.ts b/src/scenario/scenario.entity.ts
index 84defbe..deb9e90 100644
--- a/src/scenario/scenario.entity.ts
+++ b/src/scenario/scenario.entity.ts
@@ -5,10 +5,10 @@ import {
   CreateDateColumn,
   UpdateDateColumn,
   OneToMany,
-} from 'typeorm';
-import { ScenarioStepEntity } from './scenario-step.entity';
+} from "typeorm";
+import { ScenarioStepEntity } from "./scenario-step.entity";
 
-@Entity('scenarios')
+@Entity("scenarios")
 export class ScenarioEntity {
   @PrimaryGeneratedColumn()
   id: number;
diff --git a/src/scenario/scenario.module.ts b/src/scenario/scenario.module.ts
index fa8240d..353f56d 100644
--- a/src/scenario/scenario.module.ts
+++ b/src/scenario/scenario.module.ts
@@ -1,19 +1,26 @@
-import { Module } from '@nestjs/common';
-import { TypeOrmModule } from '@nestjs/typeorm';
-import { ScenarioEntity } from './scenario.entity';
-import { ScenarioStepEntity } from './scenario-step.entity';
-import { ScenarioRunEntity } from './scenario-run.entity';
-import { ScenarioRunStepEntity } from './scenario-run-step.entity';
-import { ScenarioService } from './scenario.service';
-import { ScenarioController } from './scenario.controller';
-import { ScenarioSchedulerService } from './scenario-scheduler.service';
-import { AuthModule } from '../auth/auth.module';
-import { CodeExecutorModule } from '../code-executor/code-executor.module';
-import { SessionModule } from '../session/session.module';
+import { Module } from "@nestjs/common";
+import { TypeOrmModule } from "@nestjs/typeorm";
+import { ScenarioEntity } from "./scenario.entity";
+import { ScenarioStepEntity } from "./scenario-step.entity";
+import { ScenarioRunEntity } from "./scenario-run.entity";
+import { ScenarioRunStepEntity } from "./scenario-run-step.entity";
+import { ScenarioRunLogEntity } from "./scenario-run-log.entity";
+import { ScenarioService } from "./scenario.service";
+import { ScenarioController } from "./scenario.controller";
+import { ScenarioSchedulerService } from "./scenario-scheduler.service";
+import { AuthModule } from "../auth/auth.module";
+import { CodeExecutorModule } from "../code-executor/code-executor.module";
+import { SessionModule } from "../session/session.module";
 
 @Module({
   imports: [
-    TypeOrmModule.forFeature([ScenarioEntity, ScenarioStepEntity, ScenarioRunEntity, ScenarioRunStepEntity]),
+    TypeOrmModule.forFeature([
+      ScenarioEntity,
+      ScenarioStepEntity,
+      ScenarioRunEntity,
+      ScenarioRunStepEntity,
+      ScenarioRunLogEntity,
+    ]),
     AuthModule,
     CodeExecutorModule,
     SessionModule,
diff --git a/src/scenario/scenario.service.ts b/src/scenario/scenario.service.ts
index 4b72884..cc5f827 100644
--- a/src/scenario/scenario.service.ts
+++ b/src/scenario/scenario.service.ts
@@ -1,20 +1,24 @@
-import { Injectable, NotFoundException } from '@nestjs/common';
-import { InjectRepository } from '@nestjs/typeorm';
-import { Repository } from 'typeorm';
-import { ScenarioEntity } from './scenario.entity';
-import { ScenarioStepEntity } from './scenario-step.entity';
-import { ScenarioRunEntity } from './scenario-run.entity';
-import { ScenarioRunStepEntity } from './scenario-run-step.entity';
-import { CreateScenarioDto } from './dto/create-scenario.dto';
-import { UpdateScenarioDto } from './dto/update-scenario.dto';
-import { CreateScenarioStepDto } from './dto/create-scenario-step.dto';
-import { UpdateScenarioStepDto } from './dto/update-scenario-step.dto';
-import { PaginationQueryDto, PaginatedResult } from '../common/dto/pagination.dto';
-import { RunsQueryDto } from './dto/runs-query.dto';
-import { ScenarioExportDto } from './dto/scenario-export.dto';
+import { Injectable, NotFoundException } from "@nestjs/common";
+import { InjectRepository } from "@nestjs/typeorm";
+import { Repository } from "typeorm";
+import { ScenarioEntity } from "./scenario.entity";
+import { ScenarioStepEntity } from "./scenario-step.entity";
+import { ScenarioRunEntity } from "./scenario-run.entity";
+import { ScenarioRunStepEntity } from "./scenario-run-step.entity";
+import { ScenarioRunLogEntity } from "./scenario-run-log.entity";
+import { CreateScenarioDto } from "./dto/create-scenario.dto";
+import { UpdateScenarioDto } from "./dto/update-scenario.dto";
+import { CreateScenarioStepDto } from "./dto/create-scenario-step.dto";
+import { UpdateScenarioStepDto } from "./dto/update-scenario-step.dto";
+import {
+  PaginationQueryDto,
+  PaginatedResult,
+} from "../common/dto/pagination.dto";
+import { RunsQueryDto } from "./dto/runs-query.dto";
+import { ScenarioExportDto } from "./dto/scenario-export.dto";
 
-export { PaginatedResult } from '../common/dto/pagination.dto';
-export type ScenarioOrderBy = 'id' | 'name' | 'createdAt' | 'updatedAt';
+export { PaginatedResult } from "../common/dto/pagination.dto";
+export type ScenarioOrderBy = "id" | "name" | "createdAt" | "updatedAt";
 
 @Injectable()
 export class ScenarioService {
@@ -27,6 +31,8 @@ export class ScenarioService {
     private readonly runRepo: Repository<ScenarioRunEntity>,
     @InjectRepository(ScenarioRunStepEntity)
     private readonly runStepRepo: Repository<ScenarioRunStepEntity>,
+    @InjectRepository(ScenarioRunLogEntity)
+    private readonly runLogRepo: Repository<ScenarioRunLogEntity>,
   ) {}
 
   // ── Scenarios ─────────────────────────────────────────────────────────────
@@ -35,11 +41,13 @@ export class ScenarioService {
     return this.scenarioRepo.save(this.scenarioRepo.create(dto));
   }
 
-  async findAll(query: PaginationQueryDto<ScenarioOrderBy>): Promise<PaginatedResult<ScenarioEntity>> {
+  async findAll(
+    query: PaginationQueryDto<ScenarioOrderBy>,
+  ): Promise<PaginatedResult<ScenarioEntity>> {
     const page = query.page ?? 1;
     const limit = query.limit ?? 20;
-    const orderBy = query.orderBy ?? 'id';
-    const orderDir = query.orderDir ?? 'ASC';
+    const orderBy = query.orderBy ?? "id";
+    const orderDir = query.orderDir ?? "ASC";
     const [data, total] = await this.scenarioRepo.findAndCount({
       order: { [orderBy]: orderDir },
       skip: (page - 1) * limit,
@@ -51,8 +59,8 @@ export class ScenarioService {
   async findOne(id: number): Promise<ScenarioEntity> {
     const scenario = await this.scenarioRepo.findOne({
       where: { id },
-      relations: ['steps'],
-      order: { steps: { order: 'ASC' } },
+      relations: ["steps"],
+      order: { steps: { order: "ASC" } },
     });
     if (!scenario) throw new NotFoundException(`Scenario ${id} not found`);
     return scenario;
@@ -71,7 +79,10 @@ export class ScenarioService {
 
   // ── Steps ─────────────────────────────────────────────────────────────────
 
-  async createStep(scenarioId: number, dto: CreateScenarioStepDto): Promise<ScenarioStepEntity> {
+  async createStep(
+    scenarioId: number,
+    dto: CreateScenarioStepDto,
+  ): Promise<ScenarioStepEntity> {
     await this.findOne(scenarioId);
     return this.stepRepo.save(
       this.stepRepo.create({
@@ -83,13 +94,23 @@ export class ScenarioService {
     );
   }
 
-  async findStep(scenarioId: number, stepId: number): Promise<ScenarioStepEntity> {
+  async findStep(
+    scenarioId: number,
+    stepId: number,
+  ): Promise<ScenarioStepEntity> {
     const step = await this.stepRepo.findOneBy({ id: stepId, scenarioId });
-    if (!step) throw new NotFoundException(`Step ${stepId} not found in scenario ${scenarioId}`);
+    if (!step)
+      throw new NotFoundException(
+        `Step ${stepId} not found in scenario ${scenarioId}`,
+      );
     return step;
   }
 
-  async updateStep(scenarioId: number, stepId: number, dto: UpdateScenarioStepDto): Promise<ScenarioStepEntity> {
+  async updateStep(
+    scenarioId: number,
+    stepId: number,
+    dto: UpdateScenarioStepDto,
+  ): Promise<ScenarioStepEntity> {
     const step = await this.findStep(scenarioId, stepId);
     Object.assign(step, dto);
     return this.stepRepo.save(step);
@@ -100,26 +121,71 @@ export class ScenarioService {
     await this.stepRepo.delete(stepId);
   }
 
-  async findRuns(scenarioId: number, query: RunsQueryDto): Promise<PaginatedResult<ScenarioRunEntity>> {
+  async findRuns(
+    scenarioId: number,
+    query: RunsQueryDto,
+  ): Promise<PaginatedResult<ScenarioRunEntity>> {
     await this.findOne(scenarioId); // 404 guard
     const page = query.page ?? 1;
     const limit = query.limit ?? 20;
     const where: Record<string, unknown> = { scenarioId };
-    if (query.status) where['status'] = query.status;
+    if (query.status) where["status"] = query.status;
     const [data, total] = await this.runRepo.findAndCount({
       where,
-      relations: ['stepRuns'],
-      order: { id: 'DESC', stepRuns: { order: 'ASC' } },
+      relations: ["stepRuns"],
+      order: { id: "DESC", stepRuns: { order: "ASC" } },
       skip: (page - 1) * limit,
       take: limit,
     });
     return { data, total, page, limit };
   }
 
-  async createRun(scenarioId: number): Promise<ScenarioRunEntity> {    const scenario = await this.findOne(scenarioId);
+  async findRun(
+    scenarioId: number,
+    runId: number,
+  ): Promise<ScenarioRunEntity & { logs: ScenarioRunLogEntity[] }> {
+    await this.findOne(scenarioId); // 404 guard
+    const run = await this.runRepo.findOne({
+      where: { id: runId, scenarioId },
+      relations: ["stepRuns", "stepRuns.scenarioStep"],
+      order: { stepRuns: { order: "ASC" } },
+    });
+    if (!run)
+      throw new NotFoundException(
+        `Run ${runId} not found in scenario ${scenarioId}`,
+      );
+    const logs = await this.runLogRepo.find({
+      where: { runId },
+      order: { createdAt: "ASC" },
+    });
+    return Object.assign(run, { logs });
+  }
+
+  async waitForRun(
+    scenarioId: number,
+    runId: number,
+    timeoutMs = 300_000,
+  ): Promise<ScenarioRunEntity & { logs: ScenarioRunLogEntity[] }> {
+    const deadline = Date.now() + timeoutMs;
+    while (Date.now() < deadline) {
+      const run = await this.runRepo.findOneBy({ id: runId, scenarioId });
+      if (!run)
+        throw new NotFoundException(
+          `Run ${runId} not found in scenario ${scenarioId}`,
+        );
+      if (run.status === "pass" || run.status === "fail") {
+        return this.findRun(scenarioId, runId);
+      }
+      await new Promise<void>((resolve) => setTimeout(resolve, 500));
+    }
+    return this.findRun(scenarioId, runId);
+  }
+
+  async createRun(scenarioId: number): Promise<ScenarioRunEntity> {
+    const scenario = await this.findOne(scenarioId);
 
     const run = await this.runRepo.save(
-      this.runRepo.create({ scenarioId, status: 'pending' }),
+      this.runRepo.create({ scenarioId, status: "pending" }),
     );
 
     const stepRuns = scenario.steps.map((step, index) =>
@@ -127,7 +193,7 @@ export class ScenarioService {
         runId: run.id,
         scenarioStepId: step.id,
         order: step.order,
-        status: index === 0 ? 'pending' : 'waiting',
+        status: index === 0 ? "pending" : "waiting",
         description: null,
       }),
     );
@@ -136,8 +202,8 @@ export class ScenarioService {
 
     return this.runRepo.findOne({
       where: { id: run.id },
-      relations: ['stepRuns'],
-      order: { stepRuns: { order: 'ASC' } },
+      relations: ["stepRuns"],
+      order: { stepRuns: { order: "ASC" } },
     }) as Promise<ScenarioRunEntity>;
   }
 
@@ -177,4 +243,3 @@ export class ScenarioService {
     return this.findOne(scenario.id);
   }
 }
-
diff --git a/src/session/session.controller.ts b/src/session/session.controller.ts
index 653c230..abe3c0e 100644
--- a/src/session/session.controller.ts
+++ b/src/session/session.controller.ts
@@ -1,28 +1,36 @@
-import { Controller, Delete, Get, NotFoundException, Param, ParseIntPipe, Query } from '@nestjs/common';
-import { ApiOperation, ApiResponse, ApiTags } from '@nestjs/swagger';
-import { SessionService } from './session.service';
-import { PaginationQueryDto } from '../common/dto/pagination.dto';
-import { SessionOrderBy } from './session.service';
+import {
+  Controller,
+  Delete,
+  Get,
+  NotFoundException,
+  Param,
+  ParseIntPipe,
+  Query,
+} from "@nestjs/common";
+import { ApiOperation, ApiResponse, ApiTags } from "@nestjs/swagger";
+import { SessionService } from "./session.service";
+import { PaginationQueryDto } from "../common/dto/pagination.dto";
+import { SessionOrderBy } from "./session.service";
 
-@ApiTags('sessions')
-@Controller('sessions')
+@ApiTags("sessions")
+@Controller("sessions")
 export class SessionController {
   constructor(private readonly sessionService: SessionService) {}
 
   @Get()
-  @ApiOperation({ summary: 'List all stored sessions (paginated)' })
-  @ApiResponse({ status: 200, description: 'Paginated sessions' })
+  @ApiOperation({ summary: "List all stored sessions (paginated)" })
+  @ApiResponse({ status: 200, description: "Paginated sessions" })
   findAll(@Query() query: PaginationQueryDto<SessionOrderBy>) {
     return this.sessionService.findAll(query);
   }
 
-  @Delete(':id')
-  @ApiOperation({ summary: 'Delete a session by ID' })
-  @ApiResponse({ status: 200, description: 'Session deleted' })
-  @ApiResponse({ status: 404, description: 'Session not found' })
-  async remove(@Param('id', ParseIntPipe) id: number): Promise<void> {
+  @Delete(":id")
+  @ApiOperation({ summary: "Delete a session by ID" })
+  @ApiResponse({ status: 200, description: "Session deleted" })
+  @ApiResponse({ status: 404, description: "Session not found" })
+  async remove(@Param("id", ParseIntPipe) id: number): Promise<void> {
     const sessions = await this.sessionService.findAll();
-    if (!sessions.data.find(s => s.id === id)) {
+    if (!sessions.data.find((s) => s.id === id)) {
       throw new NotFoundException(`Session ${id} not found`);
     }
     await this.sessionService.remove(id);
diff --git a/src/session/session.entity.ts b/src/session/session.entity.ts
index 8d9ceb2..7f9bcfc 100644
--- a/src/session/session.entity.ts
+++ b/src/session/session.entity.ts
@@ -4,9 +4,9 @@ import {
   Column,
   CreateDateColumn,
   UpdateDateColumn,
-} from 'typeorm';
+} from "typeorm";
 
-@Entity('sessions')
+@Entity("sessions")
 export class SessionEntity {
   @PrimaryGeneratedColumn()
   id: number;
@@ -14,13 +14,13 @@ export class SessionEntity {
   @Column({ unique: true })
   sessionName: string;
 
-  @Column('text')
+  @Column("text")
   token: string;
 
-  @Column('text')
+  @Column("text")
   cookies: string; // JSON-serialised Cookie[] from Playwright
 
-  @Column('text', { default: '{}' })
+  @Column("text", { default: "{}" })
   localStorage: string; // JSON-serialised Record<string, string> from Playwright
 
   @CreateDateColumn()
diff --git a/src/session/session.module.ts b/src/session/session.module.ts
index c5bcaa0..3c2cbda 100644
--- a/src/session/session.module.ts
+++ b/src/session/session.module.ts
@@ -1,8 +1,8 @@
-import { Module } from '@nestjs/common';
-import { TypeOrmModule } from '@nestjs/typeorm';
-import { SessionEntity } from './session.entity';
-import { SessionService } from './session.service';
-import { SessionController } from './session.controller';
+import { Module } from "@nestjs/common";
+import { TypeOrmModule } from "@nestjs/typeorm";
+import { SessionEntity } from "./session.entity";
+import { SessionService } from "./session.service";
+import { SessionController } from "./session.controller";
 
 @Module({
   imports: [TypeOrmModule.forFeature([SessionEntity])],
diff --git a/src/session/session.service.ts b/src/session/session.service.ts
index 8e8e42b..e156847 100644
--- a/src/session/session.service.ts
+++ b/src/session/session.service.ts
@@ -1,11 +1,14 @@
-import { Injectable } from '@nestjs/common';
-import { InjectRepository } from '@nestjs/typeorm';
-import { Repository } from 'typeorm';
-import { SessionEntity } from './session.entity';
-import type { Cookie } from 'playwright';
-import { PaginationQueryDto, PaginatedResult } from '../common/dto/pagination.dto';
+import { Injectable } from "@nestjs/common";
+import { InjectRepository } from "@nestjs/typeorm";
+import { Repository } from "typeorm";
+import { SessionEntity } from "./session.entity";
+import type { Cookie } from "playwright";
+import {
+  PaginationQueryDto,
+  PaginatedResult,
+} from "../common/dto/pagination.dto";
 
-export type SessionOrderBy = 'id' | 'sessionName' | 'createdAt' | 'updatedAt';
+export type SessionOrderBy = "id" | "sessionName" | "createdAt" | "updatedAt";
 
 @Injectable()
 export class SessionService {
@@ -43,13 +46,19 @@ export class SessionService {
     return this.repo.findOneBy({ sessionName });
   }
 
-  async findAll(query: PaginationQueryDto<SessionOrderBy> = {}): Promise<PaginatedResult<Pick<SessionEntity, 'id' | 'sessionName' | 'createdAt' | 'updatedAt'>>> {
+  async findAll(
+    query: PaginationQueryDto<SessionOrderBy> = {},
+  ): Promise<
+    PaginatedResult<
+      Pick<SessionEntity, "id" | "sessionName" | "createdAt" | "updatedAt">
+    >
+  > {
     const page = query.page ?? 1;
     const limit = query.limit ?? 20;
-    const orderBy = query.orderBy ?? 'id';
-    const orderDir = query.orderDir ?? 'ASC';
+    const orderBy = query.orderBy ?? "id";
+    const orderDir = query.orderDir ?? "ASC";
     const [data, total] = await this.repo.findAndCount({
-      select: ['id', 'sessionName', 'createdAt', 'updatedAt'],
+      select: ["id", "sessionName", "createdAt", "updatedAt"],
       order: { [orderBy]: orderDir },
       skip: (page - 1) * limit,
       take: limit,
diff --git a/test/__mocks__/jsdom.ts b/test/__mocks__/jsdom.ts
index 4e81fd6..58eeb1f 100644
--- a/test/__mocks__/jsdom.ts
+++ b/test/__mocks__/jsdom.ts
@@ -1,14 +1,17 @@
 const mockElement = {
   outerHTML: '<div id="mock">mock content</div>',
-  textContent: 'mock content',
+  textContent: "mock content",
 };
 
 export class JSDOM {
-  constructor(public html: string, public options?: any) {}
+  constructor(
+    public html: string,
+    public options?: Record<string, unknown>,
+  ) {}
   get window() {
     return {
       document: {
-        querySelector: (_selector: string) => mockElement,
+        querySelector: () => mockElement,
       },
     };
   }
diff --git a/test/__mocks__/playwright.ts b/test/__mocks__/playwright.ts
index 37273ce..f61d08d 100644
--- a/test/__mocks__/playwright.ts
+++ b/test/__mocks__/playwright.ts
@@ -3,9 +3,9 @@ export const chromium = {
     newContext: jest.fn().mockResolvedValue({
       newPage: jest.fn().mockResolvedValue({
         goto: jest.fn(),
-        content: jest.fn().mockResolvedValue('<html></html>'),
-        title: jest.fn().mockReturnValue(''),
-        url: jest.fn().mockReturnValue(''),
+        content: jest.fn().mockResolvedValue("<html></html>"),
+        title: jest.fn().mockReturnValue(""),
+        url: jest.fn().mockReturnValue(""),
         evaluate: jest.fn(),
         close: jest.fn(),
       }),
diff --git a/test/__mocks__/readability.ts b/test/__mocks__/readability.ts
index 1bbb19e..aec5c81 100644
--- a/test/__mocks__/readability.ts
+++ b/test/__mocks__/readability.ts
@@ -1,6 +1,6 @@
 export class Readability {
-  constructor(private doc: any) {}
+  constructor(private doc: unknown) {}
   parse() {
-    return { textContent: '' };
+    return { textContent: "" };
   }
 }
diff --git a/test/app.harness.ts b/test/app.harness.ts
index 4afb85a..4816451 100644
--- a/test/app.harness.ts
+++ b/test/app.harness.ts
@@ -1,23 +1,27 @@
-import { INestApplication, ValidationPipe } from '@nestjs/common';
-import { Test, TestingModule } from '@nestjs/testing';
-import { TypeOrmModule } from '@nestjs/typeorm';
-import { ConfigModule } from '@nestjs/config';
-import { ScheduleModule } from '@nestjs/schedule';
-import debug from 'debug';
+import { INestApplication, ValidationPipe } from "@nestjs/common";
+import { Test, TestingModule } from "@nestjs/testing";
+import { TypeOrmModule } from "@nestjs/typeorm";
+import { ConfigModule } from "@nestjs/config";
+import { ScheduleModule } from "@nestjs/schedule";
+jest.mock("@nestjs/common", () => {
+  const actual = jest.requireActual("@nestjs/common");
+  // eslint-disable-next-line @typescript-eslint/no-require-imports
+  const log = require("debug")("test");
+  // eslint-disable-next-line @typescript-eslint/no-require-imports
+  const { Logger } = require("@nestjs/common/services/logger.service");
 
-jest.mock('@nestjs/common', () => {
-  const actual = jest.requireActual('@nestjs/common');
-  const log = require('debug')('test');
-  const { Logger } = require('@nestjs/common/services/logger.service');
-
-  Logger.prototype.error = function (message: unknown, stack?: string, context?: string) {
-    const ctx = context ?? this.context ?? 'App';
-    log(`[${ctx}]`, 'error', message, ...(stack ? [stack] : []));
+  Logger.prototype.error = function (
+    message: unknown,
+    stack?: string,
+    context?: string,
+  ) {
+    const ctx = context ?? this.context ?? "App";
+    log(`[${ctx}]`, "error", message, ...(stack ? [stack] : []));
   };
 
-  for (const level of ['log', 'warn', 'debug', 'verbose', 'fatal'] as const) {
+  for (const level of ["log", "warn", "debug", "verbose", "fatal"] as const) {
     Logger.prototype[level] = function (message: unknown, context?: string) {
-      const ctx = context ?? this.context ?? 'App';
+      const ctx = context ?? this.context ?? "App";
       log(`[${ctx}]`, level, message);
     };
   }
@@ -25,29 +29,30 @@ jest.mock('@nestjs/common', () => {
   return actual;
 });
 
-import { AuthModule } from '../src/auth/auth.module';
-import { BrowserModule } from '../src/browser/browser.module';
-import { SessionModule } from '../src/session/session.module';
-import { EnvironmentModule } from '../src/environment/environment.module';
-import { ScenarioModule } from '../src/scenario/scenario.module';
-import { McpModule } from '../src/mcp/mcp.module';
-import { SessionEntity } from '../src/session/session.entity';
-import { EnvironmentEntity } from '../src/environment/environment.entity';
-import { ScenarioEntity } from '../src/scenario/scenario.entity';
-import { ScenarioStepEntity } from '../src/scenario/scenario-step.entity';
-import { ScenarioRunEntity } from '../src/scenario/scenario-run.entity';
-import { ScenarioRunStepEntity } from '../src/scenario/scenario-run-step.entity';
-import { HealthController } from '../src/health/health.controller';
-import { HttpExceptionFilter } from '../src/filters/http-exception.filter';
-import { LoggingInterceptor } from '../src/interceptors/logging.interceptor';
+import { AuthModule } from "../src/auth/auth.module";
+import { BrowserModule } from "../src/browser/browser.module";
+import { SessionModule } from "../src/session/session.module";
+import { EnvironmentModule } from "../src/environment/environment.module";
+import { ScenarioModule } from "../src/scenario/scenario.module";
+import { McpModule } from "../src/mcp/mcp.module";
+import { SessionEntity } from "../src/session/session.entity";
+import { EnvironmentEntity } from "../src/environment/environment.entity";
+import { ScenarioEntity } from "../src/scenario/scenario.entity";
+import { ScenarioStepEntity } from "../src/scenario/scenario-step.entity";
+import { ScenarioRunEntity } from "../src/scenario/scenario-run.entity";
+import { ScenarioRunStepEntity } from "../src/scenario/scenario-run-step.entity";
+import { ScenarioRunLogEntity } from "../src/scenario/scenario-run-log.entity";
+import { HealthController } from "../src/health/health.controller";
+import { HttpExceptionFilter } from "../src/filters/http-exception.filter";
+import { LoggingInterceptor } from "../src/interceptors/logging.interceptor";
 
 export async function buildTestApp(): Promise<INestApplication> {
   const module: TestingModule = await Test.createTestingModule({
     imports: [
       ConfigModule.forRoot({ isGlobal: true, ignoreEnvFile: true }),
       TypeOrmModule.forRoot({
-        type: 'better-sqlite3',
-        database: ':memory:',
+        type: "better-sqlite3",
+        database: ":memory:",
         entities: [
           SessionEntity,
           EnvironmentEntity,
@@ -55,6 +60,7 @@ export async function buildTestApp(): Promise<INestApplication> {
           ScenarioStepEntity,
           ScenarioRunEntity,
           ScenarioRunStepEntity,
+          ScenarioRunLogEntity,
         ],
         synchronize: true,
       }),
diff --git a/test/auth.controller.spec.ts b/test/auth.controller.spec.ts
index 2031630..c477542 100644
--- a/test/auth.controller.spec.ts
+++ b/test/auth.controller.spec.ts
@@ -1,6 +1,6 @@
-import { INestApplication } from '@nestjs/common';
-import request from 'supertest';
-import { buildTestApp } from './app.harness';
+import { INestApplication } from "@nestjs/common";
+import request from "supertest";
+import { buildTestApp } from "./app.harness";
 
 /**
  * Auth controller integration tests.
@@ -9,7 +9,7 @@ import { buildTestApp } from './app.harness';
  * exercised here (those belong to e2e tests with real credentials).
  * We cover the parts that can be tested without external dependencies.
  */
-describe('AuthController', () => {
+describe("AuthController", () => {
   let app: INestApplication;
 
   beforeAll(async () => {
@@ -22,39 +22,39 @@ describe('AuthController', () => {
 
   // ── GET /keys ──────────────────────────────────────────────────────────────
 
-  describe('GET /keys', () => {
-    it('returns 200 with a keys array', async () => {
-      const res = await request(app.getHttpServer()).get('/keys').expect(200);
-      expect(res.body).toHaveProperty('keys');
+  describe("GET /keys", () => {
+    it("returns 200 with a keys array", async () => {
+      const res = await request(app.getHttpServer()).get("/keys").expect(200);
+      expect(res.body).toHaveProperty("keys");
       expect(Array.isArray(res.body.keys)).toBe(true);
     });
   });
 
   // ── POST /login ────────────────────────────────────────────────────────────
 
-  describe('POST /login', () => {
-    it('returns 400 when body is empty', async () => {
-      await request(app.getHttpServer()).post('/login').send({}).expect(400);
+  describe("POST /login", () => {
+    it("returns 400 when body is empty", async () => {
+      await request(app.getHttpServer()).post("/login").send({}).expect(400);
     });
 
-    it('returns 400 when key is missing', async () => {
+    it("returns 400 when key is missing", async () => {
       await request(app.getHttpServer())
-        .post('/login')
-        .send({ environmentName: 'test-env' })
+        .post("/login")
+        .send({ environmentName: "test-env" })
         .expect(400);
     });
 
-    it('returns 400 when environmentName is missing', async () => {
+    it("returns 400 when environmentName is missing", async () => {
       await request(app.getHttpServer())
-        .post('/login')
-        .send({ key: 'some-key' })
+        .post("/login")
+        .send({ key: "some-key" })
         .expect(400);
     });
 
-    it('returns 400 when key file does not exist', async () => {
+    it("returns 400 when key file does not exist", async () => {
       await request(app.getHttpServer())
-        .post('/login')
-        .send({ key: 'nonexistent-key', environmentName: 'test-env' })
+        .post("/login")
+        .send({ key: "nonexistent-key", environmentName: "test-env" })
         .expect(404); // NotFoundException for missing environment
     });
   });
diff --git a/test/browser.controller.spec.ts b/test/browser.controller.spec.ts
index dad3c41..6cf32d7 100644
--- a/test/browser.controller.spec.ts
+++ b/test/browser.controller.spec.ts
@@ -1,9 +1,9 @@
-import { INestApplication } from '@nestjs/common';
-import { getRepositoryToken } from '@nestjs/typeorm';
-import request from 'supertest';
-import { buildTestApp } from './app.harness';
-import { SessionEntity } from '../src/session/session.entity';
-import { Repository } from 'typeorm';
+import { INestApplication } from "@nestjs/common";
+import { getRepositoryToken } from "@nestjs/typeorm";
+import request from "supertest";
+import { buildTestApp } from "./app.harness";
+import { SessionEntity } from "../src/session/session.entity";
+import { Repository } from "typeorm";
 
 /**
  * Browser controller integration tests.
@@ -12,24 +12,26 @@ import { Repository } from 'typeorm';
  * validation rejections (no browser launched) and session-not-found paths,
  * which are safe to run in a headless CI environment.
  */
-describe('BrowserController', () => {
+describe("BrowserController", () => {
   let app: INestApplication;
   let sessionRepo: Repository<SessionEntity>;
 
-  const FAKE_SESSION = 'test-browser-session';
+  const FAKE_SESSION = "test-browser-session";
 
   beforeAll(async () => {
     app = await buildTestApp();
-    sessionRepo = app.get<Repository<SessionEntity>>(getRepositoryToken(SessionEntity));
+    sessionRepo = app.get<Repository<SessionEntity>>(
+      getRepositoryToken(SessionEntity),
+    );
 
     // Seed a session with minimal but valid JSON so the browser code can
     // deserialise it (it will still fail to open a real page, tested separately)
     await sessionRepo.save(
       sessionRepo.create({
         sessionName: FAKE_SESSION,
-        token: 'fake-token',
-        cookies: '[]',
-        localStorage: '{}',
+        token: "fake-token",
+        cookies: "[]",
+        localStorage: "{}",
       }),
     );
   });
@@ -40,29 +42,29 @@ describe('BrowserController', () => {
 
   // ── POST /open ─────────────────────────────────────────────────────────────
 
-  describe('POST /open', () => {
-    it('returns 400 when body is empty', async () => {
-      await request(app.getHttpServer()).post('/open').send({}).expect(400);
+  describe("POST /open", () => {
+    it("returns 400 when body is empty", async () => {
+      await request(app.getHttpServer()).post("/open").send({}).expect(400);
     });
 
-    it('returns 400 when url is missing', async () => {
+    it("returns 400 when url is missing", async () => {
       await request(app.getHttpServer())
-        .post('/open')
+        .post("/open")
         .send({ sessionName: FAKE_SESSION })
         .expect(400);
     });
 
-    it('returns 404 when session does not exist', async () => {
+    it("returns 404 when session does not exist", async () => {
       await request(app.getHttpServer())
-        .post('/open')
-        .send({ sessionName: 'no-such-session', url: 'https://example.com' })
+        .post("/open")
+        .send({ sessionName: "no-such-session", url: "https://example.com" })
         .expect(404);
     });
 
-    it('succeeds without a session (sessionless open)', async () => {
+    it("succeeds without a session (sessionless open)", async () => {
       const res = await request(app.getHttpServer())
-        .post('/open')
-        .send({ url: 'https://example.com' })
+        .post("/open")
+        .send({ url: "https://example.com" })
         .expect(201);
       expect(res.body).toMatchObject({
         url: expect.any(String),
@@ -71,55 +73,59 @@ describe('BrowserController', () => {
       });
     });
 
-    it('returns only selector content when selector is provided', async () => {
+    it("returns only selector content when selector is provided", async () => {
       const res = await request(app.getHttpServer())
-        .post('/open')
-        .send({ url: 'https://example.com', selector: '#mock' })
+        .post("/open")
+        .send({ url: "https://example.com", selector: "#mock" })
         .expect(201);
       expect(res.body.content).toBe('<div id="mock">mock content</div>');
     });
 
-    it('returns selector text content in reader mode', async () => {
+    it("returns selector text content in reader mode", async () => {
       const res = await request(app.getHttpServer())
-        .post('/open')
-        .send({ url: 'https://example.com', selector: '#mock', readerMode: true })
+        .post("/open")
+        .send({
+          url: "https://example.com",
+          selector: "#mock",
+          readerMode: true,
+        })
         .expect(201);
-      expect(res.body.content).toBe('mock content');
+      expect(res.body.content).toBe("mock content");
     });
   });
 
   // ── POST /exec ─────────────────────────────────────────────────────────────
 
-  describe('POST /exec', () => {
-    it('returns 400 when body is empty', async () => {
-      await request(app.getHttpServer()).post('/exec').send({}).expect(400);
+  describe("POST /exec", () => {
+    it("returns 400 when body is empty", async () => {
+      await request(app.getHttpServer()).post("/exec").send({}).expect(400);
     });
 
-    it('returns 400 when code is missing', async () => {
+    it("returns 400 when code is missing", async () => {
       await request(app.getHttpServer())
-        .post('/exec')
+        .post("/exec")
         .send({ sessionName: FAKE_SESSION })
         .expect(400);
     });
 
-    it('returns 400 when code has a syntax error', async () => {
+    it("returns 400 when code has a syntax error", async () => {
       await request(app.getHttpServer())
-        .post('/exec')
-        .send({ sessionName: FAKE_SESSION, code: 'this is not valid {{{' })
+        .post("/exec")
+        .send({ sessionName: FAKE_SESSION, code: "this is not valid {{{" })
         .expect(400);
     });
 
-    it('returns 404 when session does not exist', async () => {
+    it("returns 404 when session does not exist", async () => {
       await request(app.getHttpServer())
-        .post('/exec')
-        .send({ sessionName: 'no-such-session', code: 'return 1;' })
+        .post("/exec")
+        .send({ sessionName: "no-such-session", code: "return 1;" })
         .expect(404);
     });
 
-    it('succeeds without a session (sessionless exec)', async () => {
+    it("succeeds without a session (sessionless exec)", async () => {
       const res = await request(app.getHttpServer())
-        .post('/exec')
-        .send({ code: 'return 42;' })
+        .post("/exec")
+        .send({ code: "return 42;" })
         .expect(201);
       expect(res.body).toEqual({ result: 42 });
     });
diff --git a/test/dom-helpers.spec.ts b/test/dom-helpers.spec.ts
index f6a5c58..dce6384 100644
--- a/test/dom-helpers.spec.ts
+++ b/test/dom-helpers.spec.ts
@@ -8,7 +8,7 @@
  * fake globals injected as named parameters.
  */
 
-import { dumpDom, DomNode } from '../src/code-executor/dom-helpers';
+import { dumpDom, DomNode } from "../src/code-executor/dom-helpers";
 
 // ---------------------------------------------------------------------------
 // Fake DOM builder
@@ -39,10 +39,10 @@ interface FakeEl {
 
 type ElAttrs = Partial<{
   role: string;
-  'data-testid': string;
-  'data-qa': string;
-  'data-action': string;
-  'data-element-id': string;
+  "data-testid": string;
+  "data-qa": string;
+  "data-action": string;
+  "data-element-id": string;
   id: string;
   type: string;
   name: string;
@@ -52,19 +52,31 @@ type ElAttrs = Partial<{
   style: string;
 }>;
 
-function el(tag: string, attrs: ElAttrs = {}, ...children: (FakeEl | string)[]): FakeEl {
+function el(
+  tag: string,
+  attrs: ElAttrs = {},
+  ...children: (FakeEl | string)[]
+): FakeEl {
   const ownTextNodes: FakeText[] = children
-    .filter((c): c is string => typeof c === 'string')
-    .map(t => ({ nodeType: 3, textContent: t }));
-  const childEls = children.filter((c): c is FakeEl => typeof c !== 'string');
-  const deepText = children.map(c => (typeof c === 'string' ? c : c.innerText)).join('');
+    .filter((c): c is string => typeof c === "string")
+    .map((t) => ({ nodeType: 3, textContent: t }));
+  const childEls = children.filter((c): c is FakeEl => typeof c !== "string");
+  const deepText = children
+    .map((c) => (typeof c === "string" ? c : c.innerText))
+    .join("");
 
-  const style = attrs.style ?? '';
-  const display = /display\s*:\s*none/.test(style) ? 'none' : '';
-  const visibility = /visibility\s*:\s*hidden/.test(style) ? 'hidden' : '';
+  const style = attrs.style ?? "";
+  const display = /display\s*:\s*none/.test(style) ? "none" : "";
+  const visibility = /visibility\s*:\s*hidden/.test(style) ? "hidden" : "";
 
   const attrMap: Record<string, string | null> = {};
-  for (const key of ['role', 'data-testid', 'data-qa', 'data-action', 'data-element-id'] as const) {
+  for (const key of [
+    "role",
+    "data-testid",
+    "data-qa",
+    "data-action",
+    "data-element-id",
+  ] as const) {
     if (attrs[key] != null) attrMap[key] = attrs[key] as string;
   }
 
@@ -73,26 +85,28 @@ function el(tag: string, attrs: ElAttrs = {}, ...children: (FakeEl | string)[]):
     children: childEls,
     childNodes: ownTextNodes,
     offsetParent: display || visibility ? null : {},
-    id: attrs.id ?? '',
-    type: attrs.type ?? '',
-    name: attrs.name ?? '',
+    id: attrs.id ?? "",
+    type: attrs.type ?? "",
+    name: attrs.name ?? "",
     href: attrs.href
-      ? attrs.href.startsWith('http')
+      ? attrs.href.startsWith("http")
         ? attrs.href
         : `https://example.com${attrs.href}`
-      : '',
+      : "",
     checked: !!attrs.checked,
     disabled: !!attrs.disabled,
     innerText: deepText,
     textContent: deepText,
-    getAttribute(name: string) { return attrMap[name] ?? null; },
+    getAttribute(name: string) {
+      return attrMap[name] ?? null;
+    },
     _display: display,
     _visibility: visibility,
   };
 }
 
 function body(...children: (FakeEl | string)[]): FakeEl {
-  return el('body', {}, ...children);
+  return el("body", {}, ...children);
 }
 
 // ── Fake page ──────────────────────────────────────────────────────────────
@@ -109,26 +123,34 @@ function findByTag(root: FakeEl, tag: string): FakeEl | null {
 function makePage(rootEl: FakeEl) {
   const fakeDocument = {
     querySelector(sel: string): FakeEl | null {
-      if (sel.startsWith('#') || sel.startsWith('[') || sel.startsWith('.')) return null;
+      if (sel.startsWith("#") || sel.startsWith("[") || sel.startsWith("."))
+        return null;
       return findByTag(rootEl, sel);
     },
   };
   const fakeWindow = {
-    getComputedStyle: (e: FakeEl) => ({ display: e._display, visibility: e._visibility }),
-    location: { origin: 'https://example.com' },
+    getComputedStyle: (e: FakeEl) => ({
+      display: e._display,
+      visibility: e._visibility,
+    }),
+    location: { origin: "https://example.com" },
   };
   const fakeNode = { TEXT_NODE: 3 };
 
-  const evaluate = jest.fn().mockImplementation((fn: Function, args: unknown) => {
-    // eslint-disable-next-line no-new-func
-    const exec = new Function(
-      'document', 'window', 'Node', '__args__',
-      `return (${fn.toString()})(__args__)`,
-    );
-    return Promise.resolve(exec(fakeDocument, fakeWindow, fakeNode, args));
-  });
+  const evaluate = jest
+    .fn()
+    .mockImplementation((fn: (...args: unknown[]) => unknown, args: unknown) => {
+      const exec = new Function(
+        "document",
+        "window",
+        "Node",
+        "__args__",
+        `return (${fn.toString()})(__args__)`,
+      );
+      return Promise.resolve(exec(fakeDocument, fakeWindow, fakeNode, args));
+    });
 
-  return { evaluate } as unknown as import('playwright').Page;
+  return { evaluate } as unknown as import("playwright").Page;
 }
 
 const dump = (rootEl: FakeEl, sel?: string): Promise<DomNode> =>
@@ -138,205 +160,262 @@ const dump = (rootEl: FakeEl, sel?: string): Promise<DomNode> =>
 // Tests
 // ---------------------------------------------------------------------------
 
-describe('dumpDom', () => {
+describe("dumpDom", () => {
   // ── Error handling ────────────────────────────────────────────────────────
 
-  it('returns an ERROR node when the root selector is not found', async () => {
-    const result = await dump(body(el('p', {}, 'hello')), '#does-not-exist');
-    expect(result.tag).toBe('ERROR');
-    expect(result.text).toContain('#does-not-exist');
+  it("returns an ERROR node when the root selector is not found", async () => {
+    const result = await dump(body(el("p", {}, "hello")), "#does-not-exist");
+    expect(result.tag).toBe("ERROR");
+    expect(result.text).toContain("#does-not-exist");
   });
 
   // ── Scope & defaults ──────────────────────────────────────────────────────
 
-  it('defaults to body scope', async () => {
-    const result = await dump(body(el('button', {}, 'Go')));
-    expect(result.tag).toBe('body');
+  it("defaults to body scope", async () => {
+    const result = await dump(body(el("button", {}, "Go")));
+    expect(result.tag).toBe("body");
   });
 
-  it('scopes to an arbitrary sub-selector', async () => {
+  it("scopes to an arbitrary sub-selector", async () => {
     const root = body(
-      el('header', {}, el('a', { href: '/nav' }, 'Nav')),
-      el('main', {}, el('button', {}, 'Action')),
+      el("header", {}, el("a", { href: "/nav" }, "Nav")),
+      el("main", {}, el("button", {}, "Action")),
     );
-    const result = await dump(root, 'main');
-    expect(result.tag).toBe('main');
-    expect(result.children.find(c => c.tag === 'header')).toBeUndefined();
+    const result = await dump(root, "main");
+    expect(result.tag).toBe("main");
+    expect(result.children.find((c) => c.tag === "header")).toBeUndefined();
   });
 
   // ── Visibility filtering ──────────────────────────────────────────────────
 
-  it('skips elements with display:none', async () => {
+  it("skips elements with display:none", async () => {
     const root = body(
-      el('button', { style: 'display:none' }, 'Hidden'),
-      el('button', {}, 'Visible'),
+      el("button", { style: "display:none" }, "Hidden"),
+      el("button", {}, "Visible"),
     );
     const result = await dump(root);
-    const btns = result.children.filter(c => c.tag === 'button');
+    const btns = result.children.filter((c) => c.tag === "button");
     expect(btns).toHaveLength(1);
-    expect(btns[0].text).toBe('Visible');
+    expect(btns[0].text).toBe("Visible");
   });
 
-  it('skips elements with visibility:hidden', async () => {
+  it("skips elements with visibility:hidden", async () => {
     const root = body(
-      el('button', { style: 'visibility:hidden' }, 'Hidden'),
-      el('button', {}, 'Visible'),
+      el("button", { style: "visibility:hidden" }, "Hidden"),
+      el("button", {}, "Visible"),
     );
     const result = await dump(root);
-    const btns = result.children.filter(c => c.tag === 'button');
+    const btns = result.children.filter((c) => c.tag === "button");
     expect(btns).toHaveLength(1);
-    expect(btns[0].text).toBe('Visible');
+    expect(btns[0].text).toBe("Visible");
   });
 
   // ── Ignored tag types ─────────────────────────────────────────────────────
 
-  it('skips SVG elements', async () => {
-    const svgEl = el('svg', {}, el('path', {}));
-    const result = await dump(body(el('button', {}, svgEl, 'Click')));
-    const btn = result.children.find(c => c.tag === 'button');
+  it("skips SVG elements", async () => {
+    const svgEl = el("svg", {}, el("path", {}));
+    const result = await dump(body(el("button", {}, svgEl, "Click")));
+    const btn = result.children.find((c) => c.tag === "button");
     expect(btn).toBeDefined();
-    expect(btn!.children.some(c => c.tag === 'svg')).toBe(false);
+    expect(btn!.children.some((c) => c.tag === "svg")).toBe(false);
   });
 
-  it('skips SCRIPT elements', async () => {
-    const result = await dump(body(el('script', {}, 'alert(1)'), el('button', {}, 'OK')));
-    expect(result.children.some(c => c.tag === 'script')).toBe(false);
+  it("skips SCRIPT elements", async () => {
+    const result = await dump(
+      body(el("script", {}, "alert(1)"), el("button", {}, "OK")),
+    );
+    expect(result.children.some((c) => c.tag === "script")).toBe(false);
   });
 
   // ── Semantic attributes ───────────────────────────────────────────────────
 
-  it('captures data-testid', async () => {
-    const result = await dump(body(el('button', { 'data-testid': 'save-btn' }, 'Save')));
-    expect(result.children.find(c => c.tag === 'button')?.testid).toBe('save-btn');
+  it("captures data-testid", async () => {
+    const result = await dump(
+      body(el("button", { "data-testid": "save-btn" }, "Save")),
+    );
+    expect(result.children.find((c) => c.tag === "button")?.testid).toBe(
+      "save-btn",
+    );
   });
 
-  it('captures data-qa', async () => {
-    const result = await dump(body(el('div', { 'data-qa': 'process-name' }, el('input', { type: 'text' }))));
-    expect(result.children.find(c => c.qa === 'process-name')).toBeDefined();
+  it("captures data-qa", async () => {
+    const result = await dump(
+      body(
+        el("div", { "data-qa": "process-name" }, el("input", { type: "text" })),
+      ),
+    );
+    expect(result.children.find((c) => c.qa === "process-name")).toBeDefined();
   });
 
-  it('captures data-action', async () => {
-    const result = await dump(body(el('div', { 'data-action': 'append.append-task' })));
-    expect(result.children.find(c => c.action === 'append.append-task')).toBeDefined();
+  it("captures data-action", async () => {
+    const result = await dump(
+      body(el("div", { "data-action": "append.append-task" })),
+    );
+    expect(
+      result.children.find((c) => c.action === "append.append-task"),
+    ).toBeDefined();
   });
 
-  it('captures data-element-id', async () => {
-    const result = await dump(body(el('div', { 'data-element-id': 'Activity_1abc' })));
-    expect(result.children.find(c => c.elementId === 'Activity_1abc')).toBeDefined();
+  it("captures data-element-id", async () => {
+    const result = await dump(
+      body(el("div", { "data-element-id": "Activity_1abc" })),
+    );
+    expect(
+      result.children.find((c) => c.elementId === "Activity_1abc"),
+    ).toBeDefined();
   });
 
-  it('captures role attribute', async () => {
-    const result = await dump(body(el('div', { role: 'dialog' }, el('button', {}, 'OK'))));
-    const dialog = result.children.find(c => c.role === 'dialog');
+  it("captures role attribute", async () => {
+    const result = await dump(
+      body(el("div", { role: "dialog" }, el("button", {}, "OK"))),
+    );
+    const dialog = result.children.find((c) => c.role === "dialog");
     expect(dialog).toBeDefined();
-    expect(dialog!.tag).toBe('div');
+    expect(dialog!.tag).toBe("div");
   });
 
   // ── Interactive element attributes ────────────────────────────────────────
 
-  it('captures input id, type, and name', async () => {
-    const result = await dump(body(el('input', { id: 'email', type: 'email', name: 'userEmail' })));
-    const input = result.children.find(c => c.tag === 'input');
-    expect(input?.id).toBe('email');
-    expect(input?.type).toBe('email');
-    expect(input?.name).toBe('userEmail');
+  it("captures input id, type, and name", async () => {
+    const result = await dump(
+      body(el("input", { id: "email", type: "email", name: "userEmail" })),
+    );
+    const input = result.children.find((c) => c.tag === "input");
+    expect(input?.id).toBe("email");
+    expect(input?.type).toBe("email");
+    expect(input?.name).toBe("userEmail");
   });
 
-  it('captures checked:true on a checked checkbox', async () => {
-    const result = await dump(body(el('input', { type: 'checkbox', checked: true })));
-    expect(result.children.find(c => c.tag === 'input')?.checked).toBe(true);
+  it("captures checked:true on a checked checkbox", async () => {
+    const result = await dump(
+      body(el("input", { type: "checkbox", checked: true })),
+    );
+    expect(result.children.find((c) => c.tag === "input")?.checked).toBe(true);
   });
 
-  it('captures checked:false on an unchecked checkbox', async () => {
-    const result = await dump(body(el('input', { type: 'checkbox' })));
-    expect(result.children.find(c => c.tag === 'input')?.checked).toBe(false);
+  it("captures checked:false on an unchecked checkbox", async () => {
+    const result = await dump(body(el("input", { type: "checkbox" })));
+    expect(result.children.find((c) => c.tag === "input")?.checked).toBe(false);
   });
 
-  it('captures disabled:true on a disabled button', async () => {
-    const result = await dump(body(el('button', { disabled: true }, 'Nope')));
-    expect(result.children.find(c => c.tag === 'button')?.disabled).toBe(true);
+  it("captures disabled:true on a disabled button", async () => {
+    const result = await dump(body(el("button", { disabled: true }, "Nope")));
+    expect(result.children.find((c) => c.tag === "button")?.disabled).toBe(
+      true,
+    );
   });
 
-  it('does not set disabled for a non-disabled button', async () => {
-    const result = await dump(body(el('button', {}, 'OK')));
-    expect(result.children.find(c => c.tag === 'button')?.disabled).toBeUndefined();
+  it("does not set disabled for a non-disabled button", async () => {
+    const result = await dump(body(el("button", {}, "OK")));
+    expect(
+      result.children.find((c) => c.tag === "button")?.disabled,
+    ).toBeUndefined();
   });
 
-  it('does not capture type for button elements', async () => {
-    const result = await dump(body(el('button', { type: 'submit' }, 'Go')));
-    expect(result.children.find(c => c.tag === 'button')?.type).toBeUndefined();
+  it("does not capture type for button elements", async () => {
+    const result = await dump(body(el("button", { type: "submit" }, "Go")));
+    expect(
+      result.children.find((c) => c.tag === "button")?.type,
+    ).toBeUndefined();
   });
 
-  it('relativizes same-origin anchor href', async () => {
-    const result = await dump(body(el('a', { href: '/workflow/123' }, 'Link')));
-    expect(result.children.find(c => c.tag === 'a')?.href).toBe('/workflow/123');
+  it("relativizes same-origin anchor href", async () => {
+    const result = await dump(body(el("a", { href: "/workflow/123" }, "Link")));
+    expect(result.children.find((c) => c.tag === "a")?.href).toBe(
+      "/workflow/123",
+    );
   });
 
-  it('keeps full href for cross-origin anchors', async () => {
-    const result = await dump(body(el('a', { href: 'https://other.com/page' }, 'Ext')));
-    expect(result.children.find(c => c.tag === 'a')?.href).toContain('other.com');
+  it("keeps full href for cross-origin anchors", async () => {
+    const result = await dump(
+      body(el("a", { href: "https://other.com/page" }, "Ext")),
+    );
+    expect(result.children.find((c) => c.tag === "a")?.href).toContain(
+      "other.com",
+    );
   });
 
   // ── Text content ──────────────────────────────────────────────────────────
 
-  it('captures own text content of a button', async () => {
-    const result = await dump(body(el('button', {}, 'Save')));
-    expect(result.children.find(c => c.tag === 'button')?.text).toBe('Save');
+  it("captures own text content of a button", async () => {
+    const result = await dump(body(el("button", {}, "Save")));
+    expect(result.children.find((c) => c.tag === "button")?.text).toBe("Save");
   });
 
-  it('truncates text to 80 characters', async () => {
-    const long = 'x'.repeat(100);
-    const result = await dump(body(el('button', {}, long)));
-    expect(result.children.find(c => c.tag === 'button')?.text?.length).toBe(80);
+  it("truncates text to 80 characters", async () => {
+    const long = "x".repeat(100);
+    const result = await dump(body(el("button", {}, long)));
+    expect(result.children.find((c) => c.tag === "button")?.text?.length).toBe(
+      80,
+    );
   });
 
-  it('falls back to innerText when element has no direct text nodes', async () => {
+  it("falls back to innerText when element has no direct text nodes", async () => {
     // button wraps a span — no direct text node on button, innerText = span text
-    const result = await dump(body(el('button', {}, el('span', {}, 'Nested'))));
-    expect(result.children.find(c => c.tag === 'button')?.text).toBe('Nested');
+    const result = await dump(body(el("button", {}, el("span", {}, "Nested"))));
+    expect(result.children.find((c) => c.tag === "button")?.text).toBe(
+      "Nested",
+    );
   });
 
   // ── Tree pruning / unwrapping ─────────────────────────────────────────────
 
-  it('unwraps a non-significant div that has exactly one significant child', async () => {
-    const result = await dump(body(el('div', {}, el('button', {}, 'Click'))));
-    const btn = result.children.find(c => c.tag === 'button');
+  it("unwraps a non-significant div that has exactly one significant child", async () => {
+    const result = await dump(body(el("div", {}, el("button", {}, "Click"))));
+    const btn = result.children.find((c) => c.tag === "button");
     expect(btn).toBeDefined();
-    expect(result.children.some(c => c.tag === 'div' && !c.role && !c.testid && !c.qa)).toBe(false);
+    expect(
+      result.children.some(
+        (c) => c.tag === "div" && !c.role && !c.testid && !c.qa,
+      ),
+    ).toBe(false);
   });
 
-  it('keeps a non-significant div that has more than one significant child', async () => {
-    const result = await dump(body(el('div', {}, el('button', {}, 'A'), el('button', {}, 'B'))));
-    const wrapper = result.children.find(c => c.tag === 'div');
+  it("keeps a non-significant div that has more than one significant child", async () => {
+    const result = await dump(
+      body(el("div", {}, el("button", {}, "A"), el("button", {}, "B"))),
+    );
+    const wrapper = result.children.find((c) => c.tag === "div");
     expect(wrapper).toBeDefined();
     expect(wrapper!.children).toHaveLength(2);
   });
 
-  it('discards non-significant childless elements', async () => {
-    const result = await dump(body(el('div', {}), el('button', {}, 'Keep')));
-    expect(result.children.find(c => c.tag === 'div' && c.children.length === 0)).toBeUndefined();
-    expect(result.children.some(c => c.tag === 'button')).toBe(true);
+  it("discards non-significant childless elements", async () => {
+    const result = await dump(body(el("div", {}), el("button", {}, "Keep")));
+    expect(
+      result.children.find((c) => c.tag === "div" && c.children.length === 0),
+    ).toBeUndefined();
+    expect(result.children.some((c) => c.tag === "button")).toBe(true);
   });
 
   // ── Structural tags ───────────────────────────────────────────────────────
 
-  it('preserves nested structure inside a form', async () => {
+  it("preserves nested structure inside a form", async () => {
     const result = await dump(
-      body(el('form', {}, el('input', { id: 'n', type: 'text', name: 'name' }), el('button', {}, 'Send'))),
+      body(
+        el(
+          "form",
+          {},
+          el("input", { id: "n", type: "text", name: "name" }),
+          el("button", {}, "Send"),
+        ),
+      ),
     );
-    const form = result.children.find(c => c.tag === 'form');
+    const form = result.children.find((c) => c.tag === "form");
     expect(form).toBeDefined();
-    expect(form!.children.find(c => c.tag === 'input')).toBeDefined();
-    expect(form!.children.find(c => c.tag === 'button')).toBeDefined();
+    expect(form!.children.find((c) => c.tag === "input")).toBeDefined();
+    expect(form!.children.find((c) => c.tag === "button")).toBeDefined();
   });
 
-  it('preserves dialog element', async () => {
-    const result = await dump(body(el('dialog', { role: 'dialog' }, el('button', {}, 'Close'))));
-    expect(result.children.find(c => c.tag === 'dialog')).toBeDefined();
+  it("preserves dialog element", async () => {
+    const result = await dump(
+      body(el("dialog", { role: "dialog" }, el("button", {}, "Close"))),
+    );
+    expect(result.children.find((c) => c.tag === "dialog")).toBeDefined();
   });
 
-  it('returns empty node when root has no visible significant content', async () => {
-    const result = await dumpDom(makePage(el('div', {})), 'div');
-    expect(result.tag).toBe('empty');
+  it("returns empty node when root has no visible significant content", async () => {
+    const result = await dumpDom(makePage(el("div", {})), "div");
+    expect(result.tag).toBe("empty");
   });
 });
diff --git a/test/environment.controller.spec.ts b/test/environment.controller.spec.ts
index 33ce963..98ce50e 100644
--- a/test/environment.controller.spec.ts
+++ b/test/environment.controller.spec.ts
@@ -1,8 +1,8 @@
-import { INestApplication } from '@nestjs/common';
-import request from 'supertest';
-import { buildTestApp } from './app.harness';
+import { INestApplication } from "@nestjs/common";
+import request from "supertest";
+import { buildTestApp } from "./app.harness";
 
-describe('EnvironmentController', () => {
+describe("EnvironmentController", () => {
   let app: INestApplication;
 
   beforeAll(async () => {
@@ -15,160 +15,187 @@ describe('EnvironmentController', () => {
 
   // ── POST /environments ─────────────────────────────────────────────────────
 
-  describe('POST /environments', () => {
-    it('creates an environment and returns 201', async () => {
+  describe("POST /environments", () => {
+    it("creates an environment and returns 201", async () => {
       const res = await request(app.getHttpServer())
-        .post('/environments')
-        .send({ name: 'env-a', urls: { id_url: 'https://id.example.com' } })
+        .post("/environments")
+        .send({ name: "env-a", urls: { id_url: "https://id.example.com" } })
         .expect(201);
 
       expect(res.body.id).toBeDefined();
-      expect(res.body.name).toBe('env-a');
-      expect(res.body.urls.id_url).toBe('https://id.example.com');
+      expect(res.body.name).toBe("env-a");
+      expect(res.body.urls.id_url).toBe("https://id.example.com");
     });
 
-    it('returns 400 when name is missing', async () => {
+    it("returns 400 when name is missing", async () => {
       await request(app.getHttpServer())
-        .post('/environments')
-        .send({ urls: { id_url: 'https://id.example.com' } })
+        .post("/environments")
+        .send({ urls: { id_url: "https://id.example.com" } })
         .expect(400);
     });
 
-    it('returns 400 when urls is missing', async () => {
+    it("returns 400 when urls is missing", async () => {
       await request(app.getHttpServer())
-        .post('/environments')
-        .send({ name: 'env-no-urls' })
+        .post("/environments")
+        .send({ name: "env-no-urls" })
         .expect(400);
     });
 
-    it('returns 400 when urls is not an object', async () => {
+    it("returns 400 when urls is not an object", async () => {
       await request(app.getHttpServer())
-        .post('/environments')
-        .send({ name: 'env-bad-urls', urls: 'not-an-object' })
+        .post("/environments")
+        .send({ name: "env-bad-urls", urls: "not-an-object" })
         .expect(400);
     });
 
-    it('returns 409 when name already exists', async () => {
+    it("returns 409 when name already exists", async () => {
       await request(app.getHttpServer())
-        .post('/environments')
-        .send({ name: 'env-duplicate', urls: {} })
+        .post("/environments")
+        .send({ name: "env-duplicate", urls: {} })
         .expect(201);
 
       await request(app.getHttpServer())
-        .post('/environments')
-        .send({ name: 'env-duplicate', urls: {} })
+        .post("/environments")
+        .send({ name: "env-duplicate", urls: {} })
         .expect(409);
     });
   });
 
   // ── GET /environments ──────────────────────────────────────────────────────
 
-  describe('GET /environments', () => {
-    it('returns 200 with a paginated result', async () => {
-      const res = await request(app.getHttpServer()).get('/environments').expect(200);
+  describe("GET /environments", () => {
+    it("returns 200 with a paginated result", async () => {
+      const res = await request(app.getHttpServer())
+        .get("/environments")
+        .expect(200);
       expect(Array.isArray(res.body.data)).toBe(true);
-      expect(typeof res.body.total).toBe('number');
-      expect(res.body).toHaveProperty('page');
-      expect(res.body).toHaveProperty('limit');
+      expect(typeof res.body.total).toBe("number");
+      expect(res.body).toHaveProperty("page");
+      expect(res.body).toHaveProperty("limit");
     });
 
-    it('respects page and limit params', async () => {
+    it("respects page and limit params", async () => {
       // seed two extra environments
-      await request(app.getHttpServer()).post('/environments').send({ name: 'env-page-1', urls: {} }).expect(201);
-      await request(app.getHttpServer()).post('/environments').send({ name: 'env-page-2', urls: {} }).expect(201);
+      await request(app.getHttpServer())
+        .post("/environments")
+        .send({ name: "env-page-1", urls: {} })
+        .expect(201);
+      await request(app.getHttpServer())
+        .post("/environments")
+        .send({ name: "env-page-2", urls: {} })
+        .expect(201);
 
-      const res = await request(app.getHttpServer()).get('/environments?page=1&limit=1').expect(200);
+      const res = await request(app.getHttpServer())
+        .get("/environments?page=1&limit=1")
+        .expect(200);
       expect(res.body.data).toHaveLength(1);
       expect(res.body.page).toBe(1);
       expect(res.body.limit).toBe(1);
     });
 
-    it('returns empty data array for out-of-range page', async () => {
-      const res = await request(app.getHttpServer()).get('/environments?page=9999&limit=20').expect(200);
+    it("returns empty data array for out-of-range page", async () => {
+      const res = await request(app.getHttpServer())
+        .get("/environments?page=9999&limit=20")
+        .expect(200);
       expect(res.body.data).toHaveLength(0);
     });
 
-    it('returns 400 for invalid page param', async () => {
-      await request(app.getHttpServer()).get('/environments?page=0').expect(400);
+    it("returns 400 for invalid page param", async () => {
+      await request(app.getHttpServer())
+        .get("/environments?page=0")
+        .expect(400);
     });
 
-    it('orders by name ASC', async () => {
-      await request(app.getHttpServer()).post('/environments').send({ name: 'zzz-env', urls: {} });
-      await request(app.getHttpServer()).post('/environments').send({ name: 'aaa-env', urls: {} });
+    it("orders by name ASC", async () => {
+      await request(app.getHttpServer())
+        .post("/environments")
+        .send({ name: "zzz-env", urls: {} });
+      await request(app.getHttpServer())
+        .post("/environments")
+        .send({ name: "aaa-env", urls: {} });
 
-      const res = await request(app.getHttpServer()).get('/environments?orderBy=name&orderDir=ASC').expect(200);
-      const names: string[] = res.body.data.map((e: any) => e.name);
+      const res = await request(app.getHttpServer())
+        .get("/environments?orderBy=name&orderDir=ASC")
+        .expect(200);
+      const names: string[] = res.body.data.map((e: { name: string }) => e.name);
       expect(names).toEqual([...names].sort());
     });
 
-    it('orders by name DESC', async () => {
-      const res = await request(app.getHttpServer()).get('/environments?orderBy=name&orderDir=DESC').expect(200);
-      const names: string[] = res.body.data.map((e: any) => e.name);
+    it("orders by name DESC", async () => {
+      const res = await request(app.getHttpServer())
+        .get("/environments?orderBy=name&orderDir=DESC")
+        .expect(200);
+      const names: string[] = res.body.data.map((e: { name: string }) => e.name);
       expect(names).toEqual([...names].sort().reverse());
     });
 
-    it('returns 400 for invalid orderDir', async () => {
-      await request(app.getHttpServer()).get('/environments?orderDir=SIDEWAYS').expect(400);
+    it("returns 400 for invalid orderDir", async () => {
+      await request(app.getHttpServer())
+        .get("/environments?orderDir=SIDEWAYS")
+        .expect(400);
     });
   });
 
   // ── GET /environments/:id ──────────────────────────────────────────────────
 
-  describe('GET /environments/:id', () => {
-    it('returns the created environment', async () => {
+  describe("GET /environments/:id", () => {
+    it("returns the created environment", async () => {
       const created = await request(app.getHttpServer())
-        .post('/environments')
-        .send({ name: 'env-get-one', urls: { cabinet_url: 'https://cabinet.example.com' } })
+        .post("/environments")
+        .send({
+          name: "env-get-one",
+          urls: { cabinet_url: "https://cabinet.example.com" },
+        })
         .expect(201);
 
       const res = await request(app.getHttpServer())
         .get(`/environments/${created.body.id}`)
         .expect(200);
 
-      expect(res.body.name).toBe('env-get-one');
+      expect(res.body.name).toBe("env-get-one");
     });
 
-    it('returns 404 for unknown id', async () => {
-      await request(app.getHttpServer()).get('/environments/99999').expect(404);
+    it("returns 404 for unknown id", async () => {
+      await request(app.getHttpServer()).get("/environments/99999").expect(404);
     });
 
-    it('returns 400 for non-numeric id', async () => {
-      await request(app.getHttpServer()).get('/environments/abc').expect(400);
+    it("returns 400 for non-numeric id", async () => {
+      await request(app.getHttpServer()).get("/environments/abc").expect(400);
     });
   });
 
   // ── PATCH /environments/:id ────────────────────────────────────────────────
 
-  describe('PATCH /environments/:id', () => {
-    it('updates name and returns 200', async () => {
+  describe("PATCH /environments/:id", () => {
+    it("updates name and returns 200", async () => {
       const created = await request(app.getHttpServer())
-        .post('/environments')
-        .send({ name: 'env-patch-me', urls: {} })
+        .post("/environments")
+        .send({ name: "env-patch-me", urls: {} })
         .expect(201);
 
       const res = await request(app.getHttpServer())
         .patch(`/environments/${created.body.id}`)
-        .send({ name: 'env-patched' })
+        .send({ name: "env-patched" })
         .expect(200);
 
-      expect(res.body.name).toBe('env-patched');
+      expect(res.body.name).toBe("env-patched");
     });
 
-    it('returns 404 for unknown id', async () => {
+    it("returns 404 for unknown id", async () => {
       await request(app.getHttpServer())
-        .patch('/environments/99999')
-        .send({ name: 'x' })
+        .patch("/environments/99999")
+        .send({ name: "x" })
         .expect(404);
     });
   });
 
   // ── DELETE /environments/:id ───────────────────────────────────────────────
 
-  describe('DELETE /environments/:id', () => {
-    it('deletes and returns 204', async () => {
+  describe("DELETE /environments/:id", () => {
+    it("deletes and returns 204", async () => {
       const created = await request(app.getHttpServer())
-        .post('/environments')
-        .send({ name: 'env-delete-me', urls: {} })
+        .post("/environments")
+        .send({ name: "env-delete-me", urls: {} })
         .expect(201);
 
       await request(app.getHttpServer())
@@ -180,8 +207,10 @@ describe('EnvironmentController', () => {
         .expect(404);
     });
 
-    it('returns 404 for unknown id', async () => {
-      await request(app.getHttpServer()).delete('/environments/99999').expect(404);
+    it("returns 404 for unknown id", async () => {
+      await request(app.getHttpServer())
+        .delete("/environments/99999")
+        .expect(404);
     });
   });
 });
diff --git a/test/mcp.controller.spec.ts b/test/mcp.controller.spec.ts
index aba10be..bc58d90 100644
--- a/test/mcp.controller.spec.ts
+++ b/test/mcp.controller.spec.ts
@@ -1,6 +1,6 @@
-import { INestApplication } from '@nestjs/common';
-import request from 'supertest';
-import { buildTestApp } from './app.harness';
+import { INestApplication } from "@nestjs/common";
+import request from "supertest";
+import { buildTestApp } from "./app.harness";
 
 /**
  * MCP controller integration tests.
@@ -14,7 +14,7 @@ import { buildTestApp } from './app.harness';
  * Browser-dependent tools (open_url, exec_code) require a live Playwright
  * session and are not covered here.
  */
-describe('McpController', () => {
+describe("McpController", () => {
   let app: INestApplication;
 
   beforeAll(async () => {
@@ -35,13 +35,13 @@ describe('McpController', () => {
   /** Send a single MCP tool call and return the parsed response body. */
   async function mcpCall(toolName: string, args: Record<string, unknown> = {}) {
     const res = await request(app.getHttpServer())
-      .post('/mcp')
-      .set('Content-Type', 'application/json')
-      .set('Accept', 'application/json, text/event-stream')
+      .post("/mcp")
+      .set("Content-Type", "application/json")
+      .set("Accept", "application/json, text/event-stream")
       .send({
-        jsonrpc: '2.0',
+        jsonrpc: "2.0",
         id: 1,
-        method: 'tools/call',
+        method: "tools/call",
         params: { name: toolName, arguments: args },
       });
     return { status: res.status, rpc: parseSse(res.text) };
@@ -49,20 +49,20 @@ describe('McpController', () => {
 
   // ── Connectivity ───────────────────────────────────────────────────────────
 
-  describe('POST /mcp — connectivity', () => {
-    it('is reachable and returns a non-5xx status', async () => {
+  describe("POST /mcp — connectivity", () => {
+    it("is reachable and returns a non-5xx status", async () => {
       const res = await request(app.getHttpServer())
-        .post('/mcp')
-        .set('Content-Type', 'application/json')
-        .set('Accept', 'application/json, text/event-stream')
+        .post("/mcp")
+        .set("Content-Type", "application/json")
+        .set("Accept", "application/json, text/event-stream")
         .send({
-          jsonrpc: '2.0',
+          jsonrpc: "2.0",
           id: 1,
-          method: 'initialize',
+          method: "initialize",
           params: {
-            protocolVersion: '2024-11-05',
+            protocolVersion: "2024-11-05",
             capabilities: {},
-            clientInfo: { name: 'test', version: '0' },
+            clientInfo: { name: "test", version: "0" },
           },
         });
       expect(res.status).toBe(200);
@@ -71,9 +71,9 @@ describe('McpController', () => {
 
   // ── list_keys tool ─────────────────────────────────────────────────────────
 
-  describe('list_keys', () => {
-    it('returns a result with text content containing a JSON array', async () => {
-      const { status, rpc } = await mcpCall('list_keys');
+  describe("list_keys", () => {
+    it("returns a result with text content containing a JSON array", async () => {
+      const { status, rpc } = await mcpCall("list_keys");
       expect(status).toBe(200);
       const result = rpc.result as { content: { text: string }[] };
       expect(Array.isArray(JSON.parse(result.content[0].text))).toBe(true);
@@ -82,50 +82,56 @@ describe('McpController', () => {
 
   // ── list_sessions tool ─────────────────────────────────────────────────────
 
-  describe('list_sessions', () => {
-    it('returns a paginated result with a data array', async () => {
-      const { status, rpc } = await mcpCall('list_sessions');
+  describe("list_sessions", () => {
+    it("returns a paginated result with a data array", async () => {
+      const { status, rpc } = await mcpCall("list_sessions");
       expect(status).toBe(200);
       const result = rpc.result as { content: { text: string }[] };
-      const body = JSON.parse(result.content[0].text) as { data: unknown[]; total: number };
+      const body = JSON.parse(result.content[0].text) as {
+        data: unknown[];
+        total: number;
+      };
       expect(Array.isArray(body.data)).toBe(true);
-      expect(typeof body.total).toBe('number');
+      expect(typeof body.total).toBe("number");
     });
   });
 
   // ── list_environments tool ─────────────────────────────────────────────────
 
-  describe('list_environments', () => {
-    it('returns a paginated result with a data array', async () => {
-      const { status, rpc } = await mcpCall('list_environments');
+  describe("list_environments", () => {
+    it("returns a paginated result with a data array", async () => {
+      const { status, rpc } = await mcpCall("list_environments");
       expect(status).toBe(200);
       const result = rpc.result as { content: { text: string }[] };
-      const body = JSON.parse(result.content[0].text) as { data: unknown[]; total: number };
+      const body = JSON.parse(result.content[0].text) as {
+        data: unknown[];
+        total: number;
+      };
       expect(Array.isArray(body.data)).toBe(true);
-      expect(typeof body.total).toBe('number');
+      expect(typeof body.total).toBe("number");
     });
   });
 
   // ── create_environment tool ────────────────────────────────────────────────
 
-  describe('create_environment', () => {
-    it('creates an environment via MCP', async () => {
-      const { status, rpc } = await mcpCall('create_environment', {
-        name: 'mcp-test-env',
-        urls: { id_url: 'https://id.example.com' },
+  describe("create_environment", () => {
+    it("creates an environment via MCP", async () => {
+      const { status, rpc } = await mcpCall("create_environment", {
+        name: "mcp-test-env",
+        urls: { id_url: "https://id.example.com" },
       });
       expect(status).toBe(200);
       const result = rpc.result as { content: { text: string }[] };
       const created = JSON.parse(result.content[0].text) as { name: string };
-      expect(created.name).toBe('mcp-test-env');
+      expect(created.name).toBe("mcp-test-env");
     });
   });
 
   // ── delete_session tool with unknown id ────────────────────────────────────
 
-  describe('delete_session', () => {
-    it('returns an MCP error result for a non-existent session id', async () => {
-      const { status, rpc } = await mcpCall('delete_session', { id: 999999 });
+  describe("delete_session", () => {
+    it("returns an MCP error result for a non-existent session id", async () => {
+      const { status, rpc } = await mcpCall("delete_session", { id: 999999 });
       expect(status).toBe(200);
       // MCP wraps service errors as isError:true content, not HTTP errors
       const result = rpc.result as { isError: boolean };
diff --git a/test/scenario.controller.spec.ts b/test/scenario.controller.spec.ts
index ba8d3cf..53c8b3b 100644
--- a/test/scenario.controller.spec.ts
+++ b/test/scenario.controller.spec.ts
@@ -1,8 +1,9 @@
-import { INestApplication } from '@nestjs/common';
-import request from 'supertest';
-import { buildTestApp } from './app.harness';
+import { INestApplication } from "@nestjs/common";
+import request from "supertest";
+import { DataSource } from "typeorm";
+import { buildTestApp } from "./app.harness";
 
-describe('ScenarioController', () => {
+describe("ScenarioController", () => {
   let app: INestApplication;
 
   beforeAll(async () => {
@@ -15,22 +16,25 @@ describe('ScenarioController', () => {
 
   // ── helpers ────────────────────────────────────────────────────────────────
 
-  async function createScenario(name = 'test scenario') {
+  async function createScenario(name = "test scenario") {
     const res = await request(app.getHttpServer())
-      .post('/scenarios')
+      .post("/scenarios")
       .send({ name })
       .expect(201);
     return res.body as { id: number; name: string };
   }
 
-  async function createStep(scenarioId: number, overrides: Record<string, unknown> = {}) {
+  async function createStep(
+    scenarioId: number,
+    overrides: Record<string, unknown> = {},
+  ) {
     const res = await request(app.getHttpServer())
       .post(`/scenarios/${scenarioId}/steps`)
       .send({
         order: 0,
-        type: 'exec',
-        sessionName: 'test-session',
-        execCode: 'return 1;',
+        type: "exec",
+        sessionName: "test-session",
+        execCode: "return 1;",
         ...overrides,
       })
       .expect(201);
@@ -39,80 +43,93 @@ describe('ScenarioController', () => {
 
   // ── POST /scenarios ────────────────────────────────────────────────────────
 
-  describe('POST /scenarios', () => {
-    it('creates a scenario and returns 201', async () => {
+  describe("POST /scenarios", () => {
+    it("creates a scenario and returns 201", async () => {
       const res = await request(app.getHttpServer())
-        .post('/scenarios')
-        .send({ name: 'my scenario' })
+        .post("/scenarios")
+        .send({ name: "my scenario" })
         .expect(201);
 
       expect(res.body.id).toBeDefined();
-      expect(res.body.name).toBe('my scenario');
+      expect(res.body.name).toBe("my scenario");
     });
 
-    it('returns 400 when name is missing', async () => {
-      await request(app.getHttpServer()).post('/scenarios').send({}).expect(400);
+    it("returns 400 when name is missing", async () => {
+      await request(app.getHttpServer())
+        .post("/scenarios")
+        .send({})
+        .expect(400);
     });
   });
 
   // ── GET /scenarios ─────────────────────────────────────────────────────────
 
-  describe('GET /scenarios', () => {
-    it('returns paginated result', async () => {
-      const res = await request(app.getHttpServer()).get('/scenarios').expect(200);
-      expect(res.body).toHaveProperty('data');
-      expect(res.body).toHaveProperty('total');
-      expect(res.body).toHaveProperty('page');
-      expect(res.body).toHaveProperty('limit');
+  describe("GET /scenarios", () => {
+    it("returns paginated result", async () => {
+      const res = await request(app.getHttpServer())
+        .get("/scenarios")
+        .expect(200);
+      expect(res.body).toHaveProperty("data");
+      expect(res.body).toHaveProperty("total");
+      expect(res.body).toHaveProperty("page");
+      expect(res.body).toHaveProperty("limit");
       expect(Array.isArray(res.body.data)).toBe(true);
     });
 
-    it('respects page and limit params', async () => {
-      await createScenario('paged-sc-a');
-      await createScenario('paged-sc-b');
+    it("respects page and limit params", async () => {
+      await createScenario("paged-sc-a");
+      await createScenario("paged-sc-b");
 
       const res = await request(app.getHttpServer())
-        .get('/scenarios?page=1&limit=1')
+        .get("/scenarios?page=1&limit=1")
         .expect(200);
       expect(res.body.data).toHaveLength(1);
       expect(res.body.limit).toBe(1);
       expect(res.body.page).toBe(1);
     });
 
-    it('returns empty data for out-of-range page', async () => {
-      const res = await request(app.getHttpServer()).get('/scenarios?page=9999&limit=20').expect(200);
+    it("returns empty data for out-of-range page", async () => {
+      const res = await request(app.getHttpServer())
+        .get("/scenarios?page=9999&limit=20")
+        .expect(200);
       expect(res.body.data).toHaveLength(0);
     });
 
-    it('returns 400 for invalid pagination params', async () => {
-      await request(app.getHttpServer()).get('/scenarios?page=0').expect(400);
+    it("returns 400 for invalid pagination params", async () => {
+      await request(app.getHttpServer()).get("/scenarios?page=0").expect(400);
     });
 
-    it('orders by name ASC', async () => {
-      await createScenario('zzz-order-sc');
-      await createScenario('aaa-order-sc');
+    it("orders by name ASC", async () => {
+      await createScenario("zzz-order-sc");
+      await createScenario("aaa-order-sc");
 
-      const res = await request(app.getHttpServer()).get('/scenarios?orderBy=name&orderDir=ASC').expect(200);
-      const names: string[] = res.body.data.map((s: any) => s.name);
+      const res = await request(app.getHttpServer())
+        .get("/scenarios?orderBy=name&orderDir=ASC")
+        .expect(200);
+      const names: string[] = res.body.data.map((s: { name: string }) => s.name);
       expect(names).toEqual([...names].sort());
     });
 
-    it('orders by name DESC', async () => {
-      const res = await request(app.getHttpServer()).get('/scenarios?orderBy=name&orderDir=DESC').expect(200);
-      const names: string[] = res.body.data.map((s: any) => s.name);
+    it("orders by name DESC", async () => {
+      const res = await request(app.getHttpServer())
+        .get("/scenarios?orderBy=name&orderDir=DESC")
+        .expect(200);
+      const names: string[] = res.body.data.map((s: { name: string }) => s.name);
       expect(names).toEqual([...names].sort().reverse());
     });
 
-    it('returns 400 for invalid orderDir', async () => {
-      await request(app.getHttpServer()).get('/scenarios?orderDir=SIDEWAYS').expect(400);
+    it("returns 400 for invalid orderDir", async () => {
+      await request(app.getHttpServer())
+        .get("/scenarios?orderDir=SIDEWAYS")
+        .expect(400);
     });
   });
 
   // ── GET /scenarios/:id ─────────────────────────────────────────────────────
 
-  describe('GET /scenarios/:id', () => {
-    it('returns the scenario with steps array', async () => {
-      const sc = await createScenario('scenario-get-one');
+  describe("GET /scenarios/:id", () => {
+    it("returns the scenario with steps array", async () => {
+      const sc = await createScenario("scenario-get-one");
       const res = await request(app.getHttpServer())
         .get(`/scenarios/${sc.id}`)
         .expect(200);
@@ -120,121 +137,128 @@ describe('ScenarioController', () => {
       expect(Array.isArray(res.body.steps)).toBe(true);
     });
 
-    it('returns 404 for unknown id', async () => {
-      await request(app.getHttpServer()).get('/scenarios/99999').expect(404);
+    it("returns 404 for unknown id", async () => {
+      await request(app.getHttpServer()).get("/scenarios/99999").expect(404);
     });
   });
 
   // ── PATCH /scenarios/:id ───────────────────────────────────────────────────
 
-  describe('PATCH /scenarios/:id', () => {
-    it('updates scenario name', async () => {
-      const sc = await createScenario('patch-me');
+  describe("PATCH /scenarios/:id", () => {
+    it("updates scenario name", async () => {
+      const sc = await createScenario("patch-me");
       const res = await request(app.getHttpServer())
         .patch(`/scenarios/${sc.id}`)
-        .send({ name: 'patched' })
+        .send({ name: "patched" })
         .expect(200);
-      expect(res.body.name).toBe('patched');
+      expect(res.body.name).toBe("patched");
     });
 
-    it('returns 404 for unknown id', async () => {
+    it("returns 404 for unknown id", async () => {
       await request(app.getHttpServer())
-        .patch('/scenarios/99999')
-        .send({ name: 'x' })
+        .patch("/scenarios/99999")
+        .send({ name: "x" })
         .expect(404);
     });
   });
 
   // ── DELETE /scenarios/:id ──────────────────────────────────────────────────
 
-  describe('DELETE /scenarios/:id', () => {
-    it('deletes and returns 204', async () => {
-      const sc = await createScenario('delete-me');
-      await request(app.getHttpServer()).delete(`/scenarios/${sc.id}`).expect(204);
+  describe("DELETE /scenarios/:id", () => {
+    it("deletes and returns 204", async () => {
+      const sc = await createScenario("delete-me");
+      await request(app.getHttpServer())
+        .delete(`/scenarios/${sc.id}`)
+        .expect(204);
       await request(app.getHttpServer()).get(`/scenarios/${sc.id}`).expect(404);
     });
 
-    it('returns 404 for unknown id', async () => {
-      await request(app.getHttpServer()).delete('/scenarios/99999').expect(404);
+    it("returns 404 for unknown id", async () => {
+      await request(app.getHttpServer()).delete("/scenarios/99999").expect(404);
     });
   });
 
   // ── POST /scenarios/:id/steps ──────────────────────────────────────────────
 
-  describe('POST /scenarios/:id/steps', () => {
-    it('creates a step with required fields', async () => {
+  describe("POST /scenarios/:id/steps", () => {
+    it("creates a step with required fields", async () => {
       const sc = await createScenario();
       const res = await request(app.getHttpServer())
         .post(`/scenarios/${sc.id}/steps`)
-        .send({ order: 0, type: 'exec', sessionName: 'my-session', execCode: 'return 1;' })
+        .send({
+          order: 0,
+          type: "exec",
+          sessionName: "my-session",
+          execCode: "return 1;",
+        })
         .expect(201);
 
       expect(res.body.id).toBeDefined();
       expect(res.body.order).toBe(0);
-      expect(res.body.type).toBe('exec');
-      expect(res.body.sessionName).toBe('my-session');
+      expect(res.body.type).toBe("exec");
+      expect(res.body.sessionName).toBe("my-session");
     });
 
-    it('creates a login step', async () => {
+    it("creates a login step", async () => {
       const sc = await createScenario();
       const res = await request(app.getHttpServer())
         .post(`/scenarios/${sc.id}/steps`)
-        .send({ order: 0, type: 'login', sessionName: 'session-x' })
+        .send({ order: 0, type: "login", sessionName: "session-x" })
         .expect(201);
 
-      expect(res.body.type).toBe('login');
+      expect(res.body.type).toBe("login");
     });
 
-    it('returns 400 when order is missing', async () => {
+    it("returns 400 when order is missing", async () => {
       const sc = await createScenario();
       await request(app.getHttpServer())
         .post(`/scenarios/${sc.id}/steps`)
-        .send({ type: 'exec', sessionName: 'x' })
+        .send({ type: "exec", sessionName: "x" })
         .expect(400);
     });
 
-    it('returns 400 when type is invalid', async () => {
+    it("returns 400 when type is invalid", async () => {
       const sc = await createScenario();
       await request(app.getHttpServer())
         .post(`/scenarios/${sc.id}/steps`)
-        .send({ order: 0, type: 'unknown', sessionName: 'x' })
+        .send({ order: 0, type: "unknown", sessionName: "x" })
         .expect(400);
     });
 
-    it('returns 400 when sessionName is missing', async () => {
+    it("returns 400 when sessionName is missing", async () => {
       const sc = await createScenario();
       await request(app.getHttpServer())
         .post(`/scenarios/${sc.id}/steps`)
-        .send({ order: 0, type: 'exec' })
+        .send({ order: 0, type: "exec" })
         .expect(400);
     });
 
-    it('returns 404 for unknown scenario', async () => {
+    it("returns 404 for unknown scenario", async () => {
       await request(app.getHttpServer())
-        .post('/scenarios/99999/steps')
-        .send({ order: 0, type: 'exec', sessionName: 'x' })
+        .post("/scenarios/99999/steps")
+        .send({ order: 0, type: "exec", sessionName: "x" })
         .expect(404);
     });
 
-    it('returns steps ordered by order field', async () => {
+    it("returns steps ordered by order field", async () => {
       const sc = await createScenario();
-      await createStep(sc.id, { order: 2, type: 'exec', sessionName: 's' });
-      await createStep(sc.id, { order: 0, type: 'exec', sessionName: 's' });
-      await createStep(sc.id, { order: 1, type: 'exec', sessionName: 's' });
+      await createStep(sc.id, { order: 2, type: "exec", sessionName: "s" });
+      await createStep(sc.id, { order: 0, type: "exec", sessionName: "s" });
+      await createStep(sc.id, { order: 1, type: "exec", sessionName: "s" });
 
       const res = await request(app.getHttpServer())
         .get(`/scenarios/${sc.id}`)
         .expect(200);
 
-      const orders = res.body.steps.map((s: any) => s.order);
+      const orders = res.body.steps.map((s: { order: number }) => s.order);
       expect(orders).toEqual([0, 1, 2]);
     });
   });
 
   // ── GET /scenarios/:id/steps/:stepId ──────────────────────────────────────
 
-  describe('GET /scenarios/:id/steps/:stepId', () => {
-    it('returns the step', async () => {
+  describe("GET /scenarios/:id/steps/:stepId", () => {
+    it("returns the step", async () => {
       const sc = await createScenario();
       const step = await createStep(sc.id);
 
@@ -245,7 +269,7 @@ describe('ScenarioController', () => {
       expect(res.body.id).toBe(step.id);
     });
 
-    it('returns 404 for unknown step', async () => {
+    it("returns 404 for unknown step", async () => {
       const sc = await createScenario();
       await request(app.getHttpServer())
         .get(`/scenarios/${sc.id}/steps/99999`)
@@ -255,21 +279,21 @@ describe('ScenarioController', () => {
 
   // ── PATCH /scenarios/:id/steps/:stepId ────────────────────────────────────
 
-  describe('PATCH /scenarios/:id/steps/:stepId', () => {
-    it('updates step fields', async () => {
+  describe("PATCH /scenarios/:id/steps/:stepId", () => {
+    it("updates step fields", async () => {
       const sc = await createScenario();
-      const step = await createStep(sc.id, { order: 0, execCode: 'return 1;' });
+      const step = await createStep(sc.id, { order: 0, execCode: "return 1;" });
 
       const res = await request(app.getHttpServer())
         .patch(`/scenarios/${sc.id}/steps/${step.id}`)
-        .send({ order: 5, execCode: 'return 99;' })
+        .send({ order: 5, execCode: "return 99;" })
         .expect(200);
 
       expect(res.body.order).toBe(5);
-      expect(res.body.execCode).toBe('return 99;');
+      expect(res.body.execCode).toBe("return 99;");
     });
 
-    it('returns 404 for unknown step', async () => {
+    it("returns 404 for unknown step", async () => {
       const sc = await createScenario();
       await request(app.getHttpServer())
         .patch(`/scenarios/${sc.id}/steps/99999`)
@@ -280,8 +304,8 @@ describe('ScenarioController', () => {
 
   // ── DELETE /scenarios/:id/steps/:stepId ───────────────────────────────────
 
-  describe('DELETE /scenarios/:id/steps/:stepId', () => {
-    it('deletes the step and returns 204', async () => {
+  describe("DELETE /scenarios/:id/steps/:stepId", () => {
+    it("deletes the step and returns 204", async () => {
       const sc = await createScenario();
       const step = await createStep(sc.id);
 
@@ -297,8 +321,8 @@ describe('ScenarioController', () => {
 
   // ── POST /scenarios/:id/run ────────────────────────────────────────────────
 
-  describe('POST /scenarios/:id/run', () => {
-    it('creates a run with stepRuns in correct initial states', async () => {
+  describe("POST /scenarios/:id/run", () => {
+    it("creates a run with stepRuns in correct initial states", async () => {
       const sc = await createScenario();
       await createStep(sc.id, { order: 0 });
       await createStep(sc.id, { order: 1 });
@@ -308,30 +332,32 @@ describe('ScenarioController', () => {
         .post(`/scenarios/${sc.id}/run`)
         .expect(201);
 
-      expect(res.body.status).toBe('pending');
+      expect(res.body.status).toBe("pending");
       expect(Array.isArray(res.body.stepRuns)).toBe(true);
       expect(res.body.stepRuns).toHaveLength(3);
 
-      const statuses = res.body.stepRuns.map((s: any) => s.status);
-      expect(statuses[0]).toBe('pending');
-      expect(statuses[1]).toBe('waiting');
-      expect(statuses[2]).toBe('waiting');
+      const statuses = res.body.stepRuns.map((s: { status: string }) => s.status);
+      expect(statuses[0]).toBe("pending");
+      expect(statuses[1]).toBe("waiting");
+      expect(statuses[2]).toBe("waiting");
     });
 
-    it('returns 404 for unknown scenario', async () => {
+    it("returns 404 for unknown scenario", async () => {
       await request(app.getHttpServer())
-        .post('/scenarios/99999/run')
+        .post("/scenarios/99999/run")
         .expect(404);
     });
   });
 
   // ── GET /scenarios/:id/runs ────────────────────────────────────────────────
 
-  describe('GET /scenarios/:id/runs', () => {
-    it('returns paginated runs with stepRuns embedded', async () => {
+  describe("GET /scenarios/:id/runs", () => {
+    it("returns paginated runs with stepRuns embedded", async () => {
       const sc = await createScenario();
       await createStep(sc.id, { order: 0 });
-      await request(app.getHttpServer()).post(`/scenarios/${sc.id}/run`).expect(201);
+      await request(app.getHttpServer())
+        .post(`/scenarios/${sc.id}/run`)
+        .expect(201);
 
       const res = await request(app.getHttpServer())
         .get(`/scenarios/${sc.id}/runs`)
@@ -341,17 +367,21 @@ describe('ScenarioController', () => {
       expect(Array.isArray(res.body.data[0].stepRuns)).toBe(true);
     });
 
-    it('filters by status', async () => {
+    it("filters by status", async () => {
       const sc = await createScenario();
       await createStep(sc.id, { order: 0 });
-      await request(app.getHttpServer()).post(`/scenarios/${sc.id}/run`).expect(201);
+      await request(app.getHttpServer())
+        .post(`/scenarios/${sc.id}/run`)
+        .expect(201);
 
       const pendingRes = await request(app.getHttpServer())
         .get(`/scenarios/${sc.id}/runs?status=pending`)
         .expect(200);
 
       expect(pendingRes.body.total).toBeGreaterThanOrEqual(1);
-      pendingRes.body.data.forEach((r: any) => expect(r.status).toBe('pending'));
+      pendingRes.body.data.forEach((r: { status: string }) =>
+        expect(r.status).toBe("pending"),
+      );
 
       const passRes = await request(app.getHttpServer())
         .get(`/scenarios/${sc.id}/runs?status=pass`)
@@ -360,67 +390,84 @@ describe('ScenarioController', () => {
       expect(passRes.body.total).toBe(0);
     });
 
-    it('returns 400 for invalid status filter', async () => {
+    it("returns 400 for invalid status filter", async () => {
       const sc = await createScenario();
       await request(app.getHttpServer())
         .get(`/scenarios/${sc.id}/runs?status=invalid`)
         .expect(400);
     });
 
-    it('returns 404 for unknown scenario', async () => {
-      await request(app.getHttpServer()).get('/scenarios/99999/runs').expect(404);
+    it("returns 404 for unknown scenario", async () => {
+      await request(app.getHttpServer())
+        .get("/scenarios/99999/runs")
+        .expect(404);
     });
   });
 
   // ── GET /scenarios/:id/export ─────────────────────────────────────────────
 
-  describe('GET /scenarios/:id/export', () => {
-    it('returns name and steps array', async () => {
-      const sc = await createScenario('export-me');
-      await createStep(sc.id, { order: 0, type: 'login', sessionName: 's', execCode: '{"keyId":"k","environmentName":"e"}' });
-      await createStep(sc.id, { order: 1, type: 'exec',  sessionName: 's', execCode: 'return 1;', validateCode: 'return true;' });
+  describe("GET /scenarios/:id/export", () => {
+    it("returns name and steps array", async () => {
+      const sc = await createScenario("export-me");
+      await createStep(sc.id, {
+        order: 0,
+        type: "login",
+        sessionName: "s",
+        execCode: '{"keyId":"k","environmentName":"e"}',
+      });
+      await createStep(sc.id, {
+        order: 1,
+        type: "exec",
+        sessionName: "s",
+        execCode: "return 1;",
+        validateCode: "return true;",
+      });
 
       const res = await request(app.getHttpServer())
         .get(`/scenarios/${sc.id}/export`)
         .expect(200);
 
-      expect(res.body.name).toBe('export-me');
+      expect(res.body.name).toBe("export-me");
       expect(Array.isArray(res.body.steps)).toBe(true);
       expect(res.body.steps).toHaveLength(2);
     });
 
-    it('exports steps ordered by order field', async () => {
-      const sc = await createScenario('export-order');
-      await createStep(sc.id, { order: 2, sessionName: 's' });
-      await createStep(sc.id, { order: 0, sessionName: 's' });
-      await createStep(sc.id, { order: 1, sessionName: 's' });
+    it("exports steps ordered by order field", async () => {
+      const sc = await createScenario("export-order");
+      await createStep(sc.id, { order: 2, sessionName: "s" });
+      await createStep(sc.id, { order: 0, sessionName: "s" });
+      await createStep(sc.id, { order: 1, sessionName: "s" });
 
       const res = await request(app.getHttpServer())
         .get(`/scenarios/${sc.id}/export`)
         .expect(200);
 
-      const orders = res.body.steps.map((s: any) => s.order);
+      const orders = res.body.steps.map((s: { order: number }) => s.order);
       expect(orders).toEqual([0, 1, 2]);
     });
 
-    it('omits internal fields (id, scenarioId, timestamps)', async () => {
-      const sc = await createScenario('export-shape');
-      await createStep(sc.id, { order: 0, sessionName: 's' });
+    it("omits internal fields (id, scenarioId, timestamps)", async () => {
+      const sc = await createScenario("export-shape");
+      await createStep(sc.id, { order: 0, sessionName: "s" });
 
       const res = await request(app.getHttpServer())
         .get(`/scenarios/${sc.id}/export`)
         .expect(200);
 
       const step = res.body.steps[0];
-      expect(step).not.toHaveProperty('id');
-      expect(step).not.toHaveProperty('scenarioId');
-      expect(step).not.toHaveProperty('createdAt');
-      expect(step).not.toHaveProperty('updatedAt');
+      expect(step).not.toHaveProperty("id");
+      expect(step).not.toHaveProperty("scenarioId");
+      expect(step).not.toHaveProperty("createdAt");
+      expect(step).not.toHaveProperty("updatedAt");
     });
 
-    it('exports null validateCode as null', async () => {
-      const sc = await createScenario('export-null-validate');
-      await createStep(sc.id, { order: 0, sessionName: 's', execCode: 'return 1;' });
+    it("exports null validateCode as null", async () => {
+      const sc = await createScenario("export-null-validate");
+      await createStep(sc.id, {
+        order: 0,
+        sessionName: "s",
+        execCode: "return 1;",
+      });
 
       const res = await request(app.getHttpServer())
         .get(`/scenarios/${sc.id}/export`)
@@ -429,99 +476,261 @@ describe('ScenarioController', () => {
       expect(res.body.steps[0].validateCode).toBeNull();
     });
 
-    it('returns 404 for unknown scenario', async () => {
-      await request(app.getHttpServer()).get('/scenarios/99999/export').expect(404);
+    it("returns 404 for unknown scenario", async () => {
+      await request(app.getHttpServer())
+        .get("/scenarios/99999/export")
+        .expect(404);
     });
   });
 
   // ── POST /scenarios/import ────────────────────────────────────────────────
 
-  describe('POST /scenarios/import', () => {
-    it('creates a new scenario with all steps', async () => {
+  describe("POST /scenarios/import", () => {
+    it("creates a new scenario with all steps", async () => {
       const payload = {
-        name: 'imported scenario',
+        name: "imported scenario",
         steps: [
-          { order: 0, type: 'login', sessionName: 's', execCode: '{"keyId":"k","environmentName":"e"}', validateCode: null },
-          { order: 1, type: 'exec',  sessionName: 's', execCode: 'return 1;', validateCode: 'return true;' },
-          { order: 2, type: 'sign',  sessionName: 's', execCode: '{"keyId":"k"}', validateCode: null },
+          {
+            order: 0,
+            type: "login",
+            sessionName: "s",
+            execCode: '{"keyId":"k","environmentName":"e"}',
+            validateCode: null,
+          },
+          {
+            order: 1,
+            type: "exec",
+            sessionName: "s",
+            execCode: "return 1;",
+            validateCode: "return true;",
+          },
+          {
+            order: 2,
+            type: "sign",
+            sessionName: "s",
+            execCode: '{"keyId":"k"}',
+            validateCode: null,
+          },
         ],
       };
 
       const res = await request(app.getHttpServer())
-        .post('/scenarios/import')
+        .post("/scenarios/import")
         .send(payload)
         .expect(201);
 
       expect(res.body.id).toBeDefined();
-      expect(res.body.name).toBe('imported scenario');
+      expect(res.body.name).toBe("imported scenario");
       expect(res.body.steps).toHaveLength(3);
-      expect(res.body.steps[0].type).toBe('login');
-      expect(res.body.steps[1].type).toBe('exec');
-      expect(res.body.steps[2].type).toBe('sign');
+      expect(res.body.steps[0].type).toBe("login");
+      expect(res.body.steps[1].type).toBe("exec");
+      expect(res.body.steps[2].type).toBe("sign");
     });
 
-    it('assigns a new id (does not collide with source)', async () => {
-      const sc = await createScenario('original');
+    it("assigns a new id (does not collide with source)", async () => {
+      const sc = await createScenario("original");
       const exportRes = await request(app.getHttpServer())
         .get(`/scenarios/${sc.id}/export`)
         .expect(200);
 
       const importRes = await request(app.getHttpServer())
-        .post('/scenarios/import')
+        .post("/scenarios/import")
         .send(exportRes.body)
         .expect(201);
 
       expect(importRes.body.id).not.toBe(sc.id);
     });
 
-    it('round-trips a scenario faithfully', async () => {
-      const sc = await createScenario('roundtrip');
-      await createStep(sc.id, { order: 0, type: 'exec', sessionName: 'rs', execCode: 'return 42;', validateCode: 'return true;' });
+    it("round-trips a scenario faithfully", async () => {
+      const sc = await createScenario("roundtrip");
+      await createStep(sc.id, {
+        order: 0,
+        type: "exec",
+        sessionName: "rs",
+        execCode: "return 42;",
+        validateCode: "return true;",
+      });
 
       const exportRes = await request(app.getHttpServer())
         .get(`/scenarios/${sc.id}/export`)
         .expect(200);
 
       const importRes = await request(app.getHttpServer())
-        .post('/scenarios/import')
+        .post("/scenarios/import")
         .send(exportRes.body)
         .expect(201);
 
-      expect(importRes.body.name).toBe('roundtrip');
+      expect(importRes.body.name).toBe("roundtrip");
       expect(importRes.body.steps).toHaveLength(1);
-      expect(importRes.body.steps[0].execCode).toBe(exportRes.body.steps[0].execCode);
-      expect(importRes.body.steps[0].validateCode).toBe(exportRes.body.steps[0].validateCode);
+      expect(importRes.body.steps[0].execCode).toBe(
+        exportRes.body.steps[0].execCode,
+      );
+      expect(importRes.body.steps[0].validateCode).toBe(
+        exportRes.body.steps[0].validateCode,
+      );
     });
 
-    it('imports with empty steps array', async () => {
+    it("imports with empty steps array", async () => {
       const res = await request(app.getHttpServer())
-        .post('/scenarios/import')
-        .send({ name: 'empty-import', steps: [] })
+        .post("/scenarios/import")
+        .send({ name: "empty-import", steps: [] })
         .expect(201);
 
-      expect(res.body.name).toBe('empty-import');
+      expect(res.body.name).toBe("empty-import");
       expect(res.body.steps).toHaveLength(0);
     });
 
-    it('returns 400 when name is missing', async () => {
+    it("returns 400 when name is missing", async () => {
       await request(app.getHttpServer())
-        .post('/scenarios/import')
+        .post("/scenarios/import")
         .send({ steps: [] })
         .expect(400);
     });
 
-    it('returns 400 when steps is not an array', async () => {
+    it("returns 400 when steps is not an array", async () => {
       await request(app.getHttpServer())
-        .post('/scenarios/import')
-        .send({ name: 'bad', steps: 'oops' })
+        .post("/scenarios/import")
+        .send({ name: "bad", steps: "oops" })
         .expect(400);
     });
 
-    it('returns 400 when a step has an invalid type', async () => {
+    it("returns 400 when a step has an invalid type", async () => {
       await request(app.getHttpServer())
-        .post('/scenarios/import')
-        .send({ name: 'bad-type', steps: [{ order: 0, type: 'unknown', sessionName: 's' }] })
+        .post("/scenarios/import")
+        .send({
+          name: "bad-type",
+          steps: [{ order: 0, type: "unknown", sessionName: "s" }],
+        })
         .expect(400);
     });
   });
+
+  // ── GET /scenarios/:id/run/:runId ─────────────────────────────────────────
+
+  describe("GET /scenarios/:id/run/:runId", () => {
+    it("returns run with stepRuns (with scenarioStep) and logs array", async () => {
+      const sc = await createScenario();
+      await createStep(sc.id, { order: 0 });
+      const runRes = await request(app.getHttpServer())
+        .post(`/scenarios/${sc.id}/run`)
+        .expect(201);
+      const runId = runRes.body.id;
+
+      const res = await request(app.getHttpServer())
+        .get(`/scenarios/${sc.id}/run/${runId}`)
+        .expect(200);
+
+      expect(res.body.id).toBe(runId);
+      expect(res.body.status).toBe("pending");
+      expect(Array.isArray(res.body.stepRuns)).toBe(true);
+      expect(res.body.stepRuns[0]).toHaveProperty("scenarioStep");
+      expect(Array.isArray(res.body.logs)).toBe(true);
+    });
+
+    it("stepRuns are ordered by order ASC", async () => {
+      const sc = await createScenario();
+      await createStep(sc.id, { order: 0 });
+      await createStep(sc.id, { order: 1 });
+      await createStep(sc.id, { order: 2 });
+      const runRes = await request(app.getHttpServer())
+        .post(`/scenarios/${sc.id}/run`)
+        .expect(201);
+      const runId = runRes.body.id;
+
+      const res = await request(app.getHttpServer())
+        .get(`/scenarios/${sc.id}/run/${runId}`)
+        .expect(200);
+
+      const orders = res.body.stepRuns.map((s: { order: number }) => s.order);
+      expect(orders).toEqual([0, 1, 2]);
+    });
+
+    it("returns 404 for unknown run", async () => {
+      const sc = await createScenario();
+      await request(app.getHttpServer())
+        .get(`/scenarios/${sc.id}/run/99999`)
+        .expect(404);
+    });
+
+    it("returns 404 when run belongs to a different scenario", async () => {
+      const sc1 = await createScenario();
+      const sc2 = await createScenario();
+      await createStep(sc1.id, { order: 0 });
+      const runRes = await request(app.getHttpServer())
+        .post(`/scenarios/${sc1.id}/run`)
+        .expect(201);
+      const runId = runRes.body.id;
+
+      await request(app.getHttpServer())
+        .get(`/scenarios/${sc2.id}/run/${runId}`)
+        .expect(404);
+    });
+
+    it("returns 404 for unknown scenario", async () => {
+      await request(app.getHttpServer())
+        .get("/scenarios/99999/run/1")
+        .expect(404);
+    });
+  });
+
+  // ── POST /scenarios/:id/run/:runId/wait ───────────────────────────────────
+
+  describe("POST /scenarios/:id/run/:runId/wait", () => {
+    it("returns 200 with run data immediately when run is already terminal", async () => {
+      const sc = await createScenario();
+      await createStep(sc.id, { order: 0 });
+      const runRes = await request(app.getHttpServer())
+        .post(`/scenarios/${sc.id}/run`)
+        .expect(201);
+      const runId = runRes.body.id;
+
+      // Manually mark run as pass so wait resolves immediately
+      const dataSource = app.get(DataSource);
+      await dataSource.query(
+        `UPDATE scenario_runs SET status='pass' WHERE id=${runId}`,
+      );
+
+      const res = await request(app.getHttpServer())
+        .post(`/scenarios/${sc.id}/run/${runId}/wait`)
+        .expect(200);
+
+      expect(res.body.id).toBe(runId);
+      expect(res.body.status).toBe("pass");
+      expect(Array.isArray(res.body.logs)).toBe(true);
+      expect(Array.isArray(res.body.stepRuns)).toBe(true);
+    });
+
+    it("returns the run in fail state when it has failed", async () => {
+      const sc = await createScenario();
+      await createStep(sc.id, { order: 0 });
+      const runRes = await request(app.getHttpServer())
+        .post(`/scenarios/${sc.id}/run`)
+        .expect(201);
+      const runId = runRes.body.id;
+
+      const dataSource = app.get(DataSource);
+      await dataSource.query(
+        `UPDATE scenario_runs SET status='fail' WHERE id=${runId}`,
+      );
+
+      const res = await request(app.getHttpServer())
+        .post(`/scenarios/${sc.id}/run/${runId}/wait`)
+        .expect(200);
+
+      expect(res.body.status).toBe("fail");
+    });
+
+    it("returns 404 for unknown run", async () => {
+      const sc = await createScenario();
+      await request(app.getHttpServer())
+        .post(`/scenarios/${sc.id}/run/99999/wait`)
+        .expect(404);
+    });
+
+    it("returns 404 for unknown scenario", async () => {
+      await request(app.getHttpServer())
+        .post("/scenarios/99999/run/1/wait")
+        .expect(404);
+    });
+  });
 });
diff --git a/test/session.controller.spec.ts b/test/session.controller.spec.ts
index 3f3c457..f8f0a68 100644
--- a/test/session.controller.spec.ts
+++ b/test/session.controller.spec.ts
@@ -1,17 +1,19 @@
-import { INestApplication } from '@nestjs/common';
-import { getRepositoryToken } from '@nestjs/typeorm';
-import { Repository } from 'typeorm';
-import request from 'supertest';
-import { buildTestApp } from './app.harness';
-import { SessionEntity } from '../src/session/session.entity';
+import { INestApplication } from "@nestjs/common";
+import { getRepositoryToken } from "@nestjs/typeorm";
+import { Repository } from "typeorm";
+import request from "supertest";
+import { buildTestApp } from "./app.harness";
+import { SessionEntity } from "../src/session/session.entity";
 
-describe('SessionController', () => {
+describe("SessionController", () => {
   let app: INestApplication;
   let repo: Repository<SessionEntity>;
 
   beforeAll(async () => {
     app = await buildTestApp();
-    repo = app.get<Repository<SessionEntity>>(getRepositoryToken(SessionEntity));
+    repo = app.get<Repository<SessionEntity>>(
+      getRepositoryToken(SessionEntity),
+    );
   });
 
   afterAll(async () => {
@@ -22,98 +24,120 @@ describe('SessionController', () => {
     return repo.save(
       repo.create({
         sessionName: name,
-        token: 'tok',
-        cookies: '[]',
-        localStorage: '{}',
+        token: "tok",
+        cookies: "[]",
+        localStorage: "{}",
       }),
     );
   }
 
   // ── GET /sessions ──────────────────────────────────────────────────────────
 
-  describe('GET /sessions', () => {
-    it('returns 200 with a paginated result', async () => {
-      const res = await request(app.getHttpServer()).get('/sessions').expect(200);
+  describe("GET /sessions", () => {
+    it("returns 200 with a paginated result", async () => {
+      const res = await request(app.getHttpServer())
+        .get("/sessions")
+        .expect(200);
       expect(Array.isArray(res.body.data)).toBe(true);
-      expect(typeof res.body.total).toBe('number');
-      expect(res.body).toHaveProperty('page');
-      expect(res.body).toHaveProperty('limit');
+      expect(typeof res.body.total).toBe("number");
+      expect(res.body).toHaveProperty("page");
+      expect(res.body).toHaveProperty("limit");
     });
 
-    it('includes seeded sessions', async () => {
-      await seedSession('visible-session');
-      const res = await request(app.getHttpServer()).get('/sessions').expect(200);
-      const names = res.body.data.map((s: any) => s.sessionName);
-      expect(names).toContain('visible-session');
+    it("includes seeded sessions", async () => {
+      await seedSession("visible-session");
+      const res = await request(app.getHttpServer())
+        .get("/sessions")
+        .expect(200);
+      const names = res.body.data.map((s: { sessionName: string }) => s.sessionName);
+      expect(names).toContain("visible-session");
     });
 
-    it('does not expose token, cookies or localStorage fields', async () => {
-      await seedSession('private-session');
-      const res = await request(app.getHttpServer()).get('/sessions').expect(200);
-      const item = res.body.data.find((s: any) => s.sessionName === 'private-session');
+    it("does not expose token, cookies or localStorage fields", async () => {
+      await seedSession("private-session");
+      const res = await request(app.getHttpServer())
+        .get("/sessions")
+        .expect(200);
+      const item = res.body.data.find(
+        (s: { sessionName: string }) => s.sessionName === "private-session",
+      ) as Record<string, unknown>;
       expect(item).toBeDefined();
       expect(item.token).toBeUndefined();
       expect(item.cookies).toBeUndefined();
       expect(item.localStorage).toBeUndefined();
     });
 
-    it('respects page and limit params', async () => {
-      await seedSession('paged-session-a');
-      await seedSession('paged-session-b');
+    it("respects page and limit params", async () => {
+      await seedSession("paged-session-a");
+      await seedSession("paged-session-b");
 
-      const res = await request(app.getHttpServer()).get('/sessions?page=1&limit=1').expect(200);
+      const res = await request(app.getHttpServer())
+        .get("/sessions?page=1&limit=1")
+        .expect(200);
       expect(res.body.data).toHaveLength(1);
       expect(res.body.page).toBe(1);
       expect(res.body.limit).toBe(1);
     });
 
-    it('returns empty data array for out-of-range page', async () => {
-      const res = await request(app.getHttpServer()).get('/sessions?page=9999&limit=20').expect(200);
+    it("returns empty data array for out-of-range page", async () => {
+      const res = await request(app.getHttpServer())
+        .get("/sessions?page=9999&limit=20")
+        .expect(200);
       expect(res.body.data).toHaveLength(0);
     });
 
-    it('returns 400 for invalid page param', async () => {
-      await request(app.getHttpServer()).get('/sessions?page=0').expect(400);
+    it("returns 400 for invalid page param", async () => {
+      await request(app.getHttpServer()).get("/sessions?page=0").expect(400);
     });
 
-    it('orders by sessionName ASC', async () => {
-      await seedSession('zzz-sort-session');
-      await seedSession('aaa-sort-session');
+    it("orders by sessionName ASC", async () => {
+      await seedSession("zzz-sort-session");
+      await seedSession("aaa-sort-session");
 
-      const res = await request(app.getHttpServer()).get('/sessions?orderBy=sessionName&orderDir=ASC').expect(200);
-      const names: string[] = res.body.data.map((s: any) => s.sessionName);
+      const res = await request(app.getHttpServer())
+        .get("/sessions?orderBy=sessionName&orderDir=ASC")
+        .expect(200);
+      const names: string[] = res.body.data.map((s: { sessionName: string }) => s.sessionName);
       expect(names).toEqual([...names].sort());
     });
 
-    it('orders by sessionName DESC', async () => {
-      const res = await request(app.getHttpServer()).get('/sessions?orderBy=sessionName&orderDir=DESC').expect(200);
-      const names: string[] = res.body.data.map((s: any) => s.sessionName);
+    it("orders by sessionName DESC", async () => {
+      const res = await request(app.getHttpServer())
+        .get("/sessions?orderBy=sessionName&orderDir=DESC")
+        .expect(200);
+      const names: string[] = res.body.data.map((s: { sessionName: string }) => s.sessionName);
       expect(names).toEqual([...names].sort().reverse());
     });
 
-    it('returns 400 for invalid orderDir', async () => {
-      await request(app.getHttpServer()).get('/sessions?orderDir=SIDEWAYS').expect(400);
+    it("returns 400 for invalid orderDir", async () => {
+      await request(app.getHttpServer())
+        .get("/sessions?orderDir=SIDEWAYS")
+        .expect(400);
     });
   });
 
   // ── DELETE /sessions/:id ───────────────────────────────────────────────────
 
-  describe('DELETE /sessions/:id', () => {
-    it('deletes an existing session and returns 200', async () => {
-      const s = await seedSession('delete-me-session');
-      await request(app.getHttpServer()).delete(`/sessions/${s.id}`).expect(200);
+  describe("DELETE /sessions/:id", () => {
+    it("deletes an existing session and returns 200", async () => {
+      const s = await seedSession("delete-me-session");
+      await request(app.getHttpServer())
+        .delete(`/sessions/${s.id}`)
+        .expect(200);
 
-      const res = await request(app.getHttpServer()).get('/sessions').expect(200);
-      const names = res.body.data.map((sess: any) => sess.sessionName);
-      expect(names).not.toContain('delete-me-session');
+      const res = await request(app.getHttpServer())
+        .get("/sessions")
+        .expect(200);
+      const names = res.body.data.map((sess: { sessionName: string }) => sess.sessionName);
+      expect(names).not.toContain("delete-me-session");
     });
 
-    it('returns 404 for unknown id', async () => {
-      await request(app.getHttpServer()).delete('/sessions/99999').expect(404);
+    it("returns 404 for unknown id", async () => {
+      await request(app.getHttpServer()).delete("/sessions/99999").expect(404);
     });
 
-    it('returns 400 for non-numeric id', async () => {
-      await request(app.getHttpServer()).delete('/sessions/abc').expect(400);
+    it("returns 400 for non-numeric id", async () => {
+      await request(app.getHttpServer()).delete("/sessions/abc").expect(400);
     });
   });
 });