Update the Test & Security Baseline from cj/security-baseline (364d756):
- make prepush runs only the checks the diff needs (scripts/security/changed_scope.py)
- make weekly = check + trivy-fs, run by the weekly cron on cj-ki
- in git worktrees gitleaks scanned 0 commits and Semgrep ignored .gitignore (.next/); fixed
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
