{
  "summary": "Iteration 7 (Filter Peringkat + Ekspor Peringkat) fully tested. 12/12 backend pytest cases passed and full UI flow verified on /admin/peringkat: filter bar visible in Angkatan mode with filter-start-date/end/category + export button; clear-filters-btn appears after applying a filter; xlsx download triggered successfully (peringkat-angkatan.xlsx); filter bar correctly hidden when a specific class is selected. Regression: per-class leaderboard and /leaderboard/me still work.",
  "backend_issues": {"critical": [], "minor": []},
  "frontend_issues": {"ui_bugs": [], "integration_issues": [], "design_issues": []},
  "test_report_links": [
    "/app/backend/tests/test_iteration7.py",
    "/app/test_reports/pytest/iteration7.xml"
  ],
  "action_items": [],
  "critical_code_review_comments": [
    "compute_global_leaderboard iterates users then does N attempts queries (N+1). For scale, consider a single aggregate/group query on attempts collection.",
    "Recurring console warning: recharts container width/height = -1 on some pages (pre-existing, not iteration 7). Ensure parent containers have explicit dimensions or aspect ratio."
  ],
  "updated_files": ["/app/backend/tests/test_iteration7.py"],
  "success_rate": {"backend": "100%", "frontend": "100%"},
  "test_credentials": "Admin hitoria532@gmail.com/admin123; Guru guru@sekolah.id/guru123; Siswa siswa@sekolah.id/siswa123 (from problem statement, verified working)",
  "seed_data_creation": "None. Existing data was sufficient (Ani Siswa 55.7 avg, 7 completed).",
  "retest_needed": false,
  "should_main_agent_self_test": false,
  "context_for_next_testing_agent": "Auth token key returned by /api/auth/login is 'token' (not 'access_token'). Use os.environ['REACT_APP_BACKEND_URL'] from frontend/.env when running pytest (export before invocation)."
}