31f8ef74fe
- Security: Add Secure flag to checkin identity cookie, implement rate limiting on login, and harden Helm security context. - Security: Add cargo-audit to CI and Release pipelines for dependency vulnerability scanning. - Backend: Enable SQLite WAL mode and fix AppState initialization in tests. - Frontend: Fully type the API client, fix importStudents FormData handling, and pin dependency versions. - Frontend: Add auto-logout on 401 and resolve authentication initialization race conditions. - CI/CD: Pin pnpm version in release workflow and include lint/audit quality gates.