Bugfix: Enforce MAC sanitize in release quality gates

- Require tools/sanitize.py during release checks and fail fast if sanitizer script is missing
- Run sanitize in fix mode against visual/ as part of quality gates
- Add post-fix sanitize check to verify no remaining MAC/sysDescr drift
- Keep release flow deterministic for visual fixture compliance - 2026-03-03 23:29:52

Author: mgarcia01752