build(deps): add groq-sdk dependency

feat(ocr, risk): add patient OCR and risk assessment

feat: add staff onboarding, password setup and welcome emails

feat: add core maternal health backend features

feat(email): add Brevo email service with scheduled alerts and notifications

feat(notifications): replace Resend with Gmail API for email delivery

feat(email): replace nodemailer with Resend for email delivery

Fix: use prisma db push for deployment

Fix: move prisma migration to runtime

Initial backend deployment with Docker and Cron jobs