PlantMD: Plant Disease Scanne

Build a minimal PlantMD replacement as a PWA using React (frontend), Node.js/Express (backend), Postgres for data, and a hosted vision API (e.g., Replicate or similar) for image inference. Core features in scope: photo upload and preview, server-side image upload endpoint, call to vision model to return species and disease labels with confidence, a diagnosis-to-treatment lookup engine that returns human-readable steps, store plants and user (email) in Postgres, a scheduler worker (Bull or cron) that enqueues weekly care tasks, and send reminders via SendGrid. Out of scope: native iOS lock-screen push notifications, paid subscription billing, and training custom ML models. Include error handling for failed uploads and model calls, input validation, and unit tests for API endpoints and scheduler logic. Provide Dockerfiles and a Terraform or Docker Compose deployment manifest for one small VM and managed Postgres.