- [A01] /export: mount after auth.middleware, filter by company for non-admin
- [A02] OIDC: verify issuer, audience, select key by kid; preload JWKS at startup
- [A07] session fixation: session.regenerate() in POST /login, GET /callback, POST /dev-login
- [A10] open redirect: safeReturn() helper validates returnTo (blocks //evil.com, https:// etc)
- [A05] CSRF: getSessionIdentifier uses req.sessionID instead of dead req.cookies.jwt
- [A05] fail-fast: reject default SESSION_SECRET / CSRF_SECRET in NODE_ENV=production
- [A05] DEV_MODE=true blocked in production
Tests: 68 PASS, 0 FAIL (was 50, added 18 new security-focused tests)