Add advisory data aggregation e2e tests proving pipeline produces queryable data
New test file verifying the full fetch→parse→map advisory pipeline:
Tier 1 (smoke, always runs):
- Source metrics: totalAdvisories > 0, lastSuccessAt populated, summary health
- Per-source freshness: syncCount, advisory counts
- Canonical API: paginated query, by-ID with source edges, CVE search
- Score distribution: endpoint works, counts sum correctly
- Cross-source: multiple distinct sources have data, multi-edge advisories
Tier 2 (gated behind E2E_ACTIVE_SYNC=1):
- Triggers KEV source sync, polls freshness until syncCount advances
- Verifies advisory count doesn't decrease, timestamp is recent
Resilience: All advisory-sources endpoints use getWithRetry() helper
that retries on 504/503 (gateway timeout during cold start). Tests
skip gracefully rather than fail when services are warming up.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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