[
  {"id":"TC-001","title":"Valid student login","area":"ui","expected":"Dashboard becomes visible"},
  {"id":"TC-002","title":"Invalid password","area":"ui","expected":"Error banner shown"},
  {"id":"TC-003","title":"Users API count","area":"api","expected":"Count equals item length"},
  {"id":"TC-004","title":"Average helper","area":"unit","expected":"Returns arithmetic mean"}
]