fix: lint: Ban waitForTimeout, setTimeout-as-delay, and fixed sleep patterns (#442)

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

package.json

@@ -2,13 +2,18 @@
   "name": "harb",
   "devDependencies": {
     "@playwright/test": "^1.55.1",
-    "playwright-mcp": "^0.0.12",
+    "@typescript-eslint/eslint-plugin": "^8.45.0",
+    "@typescript-eslint/parser": "^8.45.0",
+    "eslint": "^9.36.0",
+    "eslint-config-prettier": "^10.1.8",
     "ethers": "^6.11.1",
-    "husky": "^9.0.11"
+    "husky": "^9.0.11",
+    "playwright-mcp": "^0.0.12"
   },
   "scripts": {
     "prepare": "husky",
-    "test:e2e": "playwright test"
+    "test:e2e": "playwright test",
+    "lint:tests": "eslint tests/ scripts/harb-evaluator/"
   },
   "type": "module",
   "workspaces": [