Replaces the single shared ADMIN_PASSWORD (Phase 2B) with real accounts: instructors table
(email/display_name/role/status), scrypt password hashing with a fresh random salt PER
INSTRUCTOR (Phase 2B used one fixed salt because there was exactly one shared password —
that assumption is gone), auth_identities table so a future OIDC login can map to the same
instructor_id without a schema change.
New POST /api/auth/instructor/login, POST /api/auth/logout, GET /api/auth/session,
POST /api/auth/change-password (old password required, revokes other sessions). No account
enumeration: identical response whether the email doesn't exist or the password is wrong.
bootstrap-owner.js is the only supported way to create the first account — no manual
database editing to stand up a fresh deployment. Refuses to run if an active owner already
exists unless the target email is an existing instructor (zero-owners recovery path).
Replaces the in-memory studentSessions/adminSessions Maps (Phase 2B — gone on every
restart) with a sessions table. Browser holds an opaque CSPRNG bearer token; only its
SHA-256 hash is ever stored server-side, same principle as password hashing. Each session
has an absolute expiry (fixed at creation) and a sliding idle expiry (pushed forward on
every authenticated request, capped at the absolute one) — one atomic UPDATE...RETURNING
per resolve, no read-then-write race. Student and instructor sessions stay fully separate
token namespaces, matching Phase 2B's cookie-name separation.
cookies.js centralizes Set-Cookie construction so the Secure attribute (COOKIE_SECURE=1,
for real HTTPS deployments) is applied consistently instead of hand-built per call site.
New platform/api/ service owns students, cohorts, curriculum, progress,
scenario attempts, and student/admin sessions. No k3s, no --privileged,
no terminal runtime — starts instantly, unlike the old identity service
which booted an unused k3s cluster just to serve roster/progress APIs.
Provisioner calls (student and admin) are consolidated here too, in
provisioner-client.js, so it's the only service that talks to the
Provisioner directly.
ced4568