fix(e2e): restore Build plugin step indentation

The RBAC step removal accidentally moved Build plugin to root level.
Fixes YAML parse error that would prevent E2E workflow from running.

.github/workflows/e2e.yaml

@@ -100,4 +100,4 @@ jobs:
         with:
           name: test-results
           path: test-results/
-          retention-days: 7
+          retention-days: 7

package.json

@@ -36,13 +36,10 @@
     "@testing-library/jest-dom": "^6.4.8",
     "@testing-library/react": "^16.0.0",
     "@testing-library/user-event": "^14.5.2",
-    "eslint": "^8.57.1",
     "jsdom": "^24.0.0",
-    "prettier": "^3.0.0",
     "react": "^18.3.1",
     "react-dom": "^18.3.1",
     "react-router-dom": "^5.3.0",
-    "typescript": "^5.6.2",
     "vitest": "^3.0.5"
   },
   "overrides": {