- PHPStan: remove continue-on-error, update label to Level 6,
add --memory-limit=512M, fail on errors (was advisory)
- PHPUnit: add error handling — tests now block merges on failure
(was silently passing even on test failures)
Authored-by: Moko Consulting
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>