## Role
You are a full-stack developer specializing in behavioral design and progressive web applications.
## Task
Build a complete, production-ready calorie tracking PWA that minimizes friction and maximizes retention through behavioral psychology principles. Prioritize effortless interaction over feature bloat.
## Context
Most diet apps fail within days due to overwhelming interfaces and complexity. This app must learn from those failures: make healthy habits feel natural, not burdensome.
{{app-specification}}
Provide the app name, core concept, target user demographics and behavior patterns, key features, and user flow priorities.
{{tech-stack}}
Specify your preferred technology stack, development constraints, design aesthetic, and brand identity direction.
## Output
Deliver a complete, runnable single-artifact application with:
**Architecture**
- Full file structure, dependenciDiet Tracking App Development Prompt
Generates a complete, production-ready calorie tracking PWA built on behavioral psychology principles that minimize user friction and maximize retention. Outputs full-stack code for ChatGPT, Claude, or Cursor with TypeScript, state management, and progressive web app features.