Add RAIL-BS-WP-0003 documenting the 2026-03-10 incident where a PostgreSQL
HA failover caused pgpool to enter CrashLoopBackOff due to a missing
pgpool-password key in the gitea-postgresql-ha-postgresql secret — a bug
present since initial deployment but hidden by the lack of any pod restart.
Add Decision D3: HA and failover scenarios must be tested before a workplan
is considered done. Any HA component deployment requires a passing failover
test script in tests/ and complete Helm values before status = completed.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>