Purpose: Record all approved deviations from the security and engineering
baseline defined in governance.md. Each exception must be time-bounded,
risk-accepted by a named decision-maker, and linked to a remediation ticket.
Review cadence: Quarterly. Expired exceptions without renewal are
automatically escalated to Platform Engineering lead.
SQLite in unit test conftest bypasses Alembic migration path
Enables zero-infra unit tests; SQLite schema is created from ORM metadata. Integration tests use full Alembic + Postgres path. See ADR-003.
Low
2027-05-23 (annual renewal)
Platform Engineering
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EX-002
Redis fail-open policy on denylist check under outage
Fail-closed (blocking all auth) during Redis outage is operationally unacceptable for an incident response tool. Fail-open is documented in ADR-002 as an explicit risk.