New /api/admin routes: cohort learning summary (completion by stage, active learners),
per-student learning detail (attempts, hint usage, assessment history, capstone state),
scenario analytics (completion rate, avg attempts, failure/hint frequency, avg time), and a
needs-attention view (repeated failures, hints used but still stuck, inactivity, an expired
assessment - deliberately instructional wording, not punitive, with an explicit test asserting
that). Assessment definition CRUD (admin/owner only), cohort assignment and session view/cancel
(any instructor role, cohort-scoped for a plain instructor via the existing Phase 3A RBAC
helpers - no new authorization primitives needed).
New Learning and Assessments tabs in the admin portal, visible to every instructor role;
definition-authoring controls are shown but the server 403s a create/edit from a non-admin/
owner role, same pattern CohortsView already uses for admin-only controls.
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