Add the prescriptions table, validation, service and CRUD routes
(/api/prescriptions, RBAC-gated; prescriber defaults to the signed-in
clinician, prescribedAt to today) and the frontend data module. The page
now loads/persists real data and computes its status KPIs.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Khalid Abdi