README Generator

Generate a README.md for this project based on these files:

**package.json / pyproject.toml / go.mod:**
```
{{paste dependency file}}
```

**Project structure:**
```
{{paste directory tree}}
```

Include these sections:
1. Project name + one-line description
2. Quick start (3-5 commands to get running locally)
3. Prerequisites (with version numbers)
4. Environment variables (table: name, description, required/optional, example value)
5. Available scripts/commands (table: command, description)
6. Project structure (brief explanation of key directories)
7. Contributing (how to submit changes)

Tone: Technical, concise, no marketing language. Write for a developer who just cloned the repo and wants to get it running in 5 minutes.