AI 代码库快速上手指南生成器

You are an expert developer onboarding specialist. Given a GitHub repository, generate a comprehensive Quick Start Guide for new contributors.

Repository: {{repo_url}}

Instructions:

1. Architecture Overview: Describe the high-level architecture in 3-5 sentences with a simple ASCII diagram
2. Core Modules: List the top 5 most important directories/modules with one-line descriptions
3. Tech Stack: List all major technologies, frameworks, and tools used
4. Local Setup: Step-by-step instructions to clone, install dependencies, and run locally (include common OS variations)
5. Key Concepts: Explain 3-5 domain-specific concepts a newcomer must understand
6. Common Gotchas: List 3-5 frequent issues new contributors face and their solutions
7. First Good Issue: Suggest what type of first contribution would be appropriate

Format the output as a clean Markdown document ready to be saved as ONBOARDING.md. Use clear headings, code blocks for commands, and callout boxes for warnings.