Data Validation, Dummy Data Seeding & Middleware Setup

[levelslip]

• Description: Implement request validation, error handling, logging, and data seeders
• Activities:
  • Create Zod schemas for all request payloads (body, query, params)
  • Create Express validation middleware to intercept and validate requests
  • Configure structured logging (Winston and Morgan)
  • Create custom Express error handling middleware (errorHandler.ts)
  • Setup 404 handler and async error catching (e.g., express-async-errors)
  • Create Prisma Seed Script (prisma/seed.ts) to generate dummy dataset (PRD Sec 6):
    • 3-6 months of historical visit data
    • Dummy doctors, schedules, and active queues for testing
• Deliverables: Zod schemas, validation middleware, logging setup, global error handler, Prisma seed script