- CHANGELOG M4 Added: rewrote the frontend bullet to describe the actual
flat ATT&CK matrix that ships (full-bleed, 15-col grid with minmax(7rem,
1fr), name-only cells, ▸/▾ chevron). The original entry still described
the abandoned 3-column drill-down picker.
- New "Fixed (post-M4 code-review pass)" subsection enumerating the six
CR-driven fixes that landed in this branch (SSRF allowlist, advisory
lock, typed contract, N+1 elimination, version clearing, error scrub +
the test additions and e2e count pinning).
- DoD counts: 53 → 58 pytest, 34 e2e unchanged. testing-m4.md follows.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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