Root cause: after backend restart (502 errors on startup), metric queries
(pipeline, team, recent, validation) get cached in error state. When the
user stays on the dashboard, the component never remounts so queries don't
auto-retry.
Fixes:
1. refetchOnMount:'always' — queries ALWAYS refetch when component mounts,
even if cached with error/stale data. Prevents stuck empty state.
2. gcTime:0 — error state is not cached; next mount starts a fresh query.
3. retry:3 — more retries before giving up (covers slow startup windows).
4. Refresh button in header — manually invalidates and refetches all 4
metric queries with a single click. Spinner icon during refetch.
1. metrics_query_service: use NULLS LAST in get_recent_tests() so tests
with actual dates always appear before NULL-dated ones.
2. campaign_service: set created_at=datetime.utcnow() when creating tests
from campaigns (was missing, leaving 21 tests with NULL created_at).
Fixed existing NULL values directly in production DB.
3. DashboardPage: add isError handling to all V2 metric widgets
(pipeline, team activity, validation rate, recent tests).
- Add retry:2 to all secondary metric queries so transient failures
are retried before showing empty state.
- Show 'Could not load X — refresh' instead of empty/misleading
'No tests created yet' when a query actually fails.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Implement all main frontend views for the MITRE ATT&CK coverage platform:
- T-026: Dashboard with coverage summary cards and tactic breakdown table
- T-027: Interactive ATT&CK matrix with filtering by status, tactic, platform
- T-028: Technique detail page with tests, intel items, and review actions
- T-029: Test creation form with technique selector and validation
- T-030: Test detail page with drag and drop evidence upload and download
- T-031: System admin panel with MITRE sync and intel scan controls
New components: CoverageSummaryCard, TacticCoverageChart, AttackMatrix, TechniqueCell, TestForm, EvidenceUpload, EvidenceList
New API modules: metrics.ts, techniques.ts, tests.ts, evidence.ts, system.ts
All views use TanStack Query for data fetching with proper loading and error states. Role-based UI controls for admin/lead actions.
