Removed remaining use of Grunt

package.json

@@ -15,9 +15,11 @@
   ],
   "scripts": {
     "posttest": "eslint \"src/**/*.js\" \"spec/**/*.js\" && prettier --check \"src/**/*.js\" \"spec/**/*.js\"",
-    "test": "grunt --stack execSpecsInNode",
+    "test": "node scripts/runSpecsInNode.js",
+    "test:parallel": "node scripts/runSpecsInParallel.js",
     "cleanup": "prettier --write \"src/**/*.js\" \"spec/**/*.js\"",
-    "build": "grunt buildDistribution",
+    "build": "node scripts/buildDistribution.js",
+    "buildStandaloneDist": "node scripts/buildStandaloneDist.js",
     "serve": "node spec/support/localJasmineBrowser.js",
     "serve:performance": "node spec/support/localJasmineBrowser.js jasmine-browser-performance.json",
     "ci": "node spec/support/ci.js",
@@ -43,12 +45,9 @@
     "eslint-plugin-compat": "^6.0.2",
     "glob": "^10.2.3",
     "globals": "^16.0.0",
-    "grunt": "^1.0.4",
-    "grunt-cli": "^1.3.2",
     "jasmine": "^5.0.0",
     "jasmine-browser-runner": "github:jasmine/jasmine-browser-runner",
     "jsdom": "^26.0.0",
-    "load-grunt-tasks": "^5.1.0",
     "prettier": "1.17.1",
     "rimraf": "^5.0.10",
     "sass": "^1.58.3",