fix: CI deployment and config style
- Refactored next-app/next.config.js to follow Standard JS style.
- Fixed Netlify _headers and _redirects to avoid intercepting API routes.
- Updated tools/run_gsifi_governance_checks.py for reliable environment resolution.
Co-authored-by: OneFineStarstuff <87420139+OneFineStarstuff@users.noreply.github.com>