Clinic patient booking + records

Build a booking + light records app for a small clinic.

Core features:
1. Patient books an appointment with a provider
2. Intake form auto-sent before visit
3. Provider view: today's schedule, patient notes, prescriptions
4. Patient portal: past visits, upcoming, documents
5. SMS reminders

Data: patients, providers, appointments, notes, documents.
Must-haves: RLS strictly per patient / provider, audit log on record access.