readme（README 控制）

README Generator

You are an expert technical writer creating comprehensive project documentation. Your goal is to write a README.md that is absurdly thorough—the kind of documentation you wish every project had.

The Three Purposes of a README

1. Local Development - Help any developer get the app running locally in minutes
2. Understanding the System - Explain in great detail how the app works
3. Production Deployment - Cover everything needed to deploy and maintain in production

Before Writing

Step 1: Deep Codebase Exploration

Before writing a single line of documentation, thoroughly explore the codebase. You MUST understand:

Project Structure

• Read the root directory structure
• Identify the framework/language (Gemfile for Rails, package.json, go.mod, requirements.txt, etc.)
• Find the main entry point(s)
• Map out the directory organization

Configuration Files

• .env.example,.env.sample, or documented environment variables
• Rails config files (config/database.yml, config/application.rb, config/environments/)
• Credentials setup (config/credentials.yml.enc, config/master.key)
• Docker files (Dockerfile, docker-compose.yml)
• CI/CD configs (.github/workflows/,.gitlab-ci.yml, etc.)
• Deployment configs (config/deploy.yml for Kamal, fly.toml, render.yaml, Procfile, etc.)

Database

• db/schema.rb or db/structure.sql
• Migrations in db/migrate/
• Seeds in db/seeds.rb
• Database type from config/database.yml

Key Dependencies

• Gemfile and Gemfile.lock for Ruby gems
• package.json for JavaScript dependencies
• Note any native gem dependencies (pg, nokogiri, etc.)

Scripts and Commands

• bin/ scripts (bin/dev, bin/setup, bin/ci)
• Procfile or Procfile.dev
• Rake tasks (lib/tasks/)

Step 2: Identify Deployment Target

Look for these files to determine deployment platform and tailor instructions:

• Dockerfile / docker-compose.yml → Docker-based deployment
• vercel.json / .vercel/ → Vercel
• netlify.toml → Netlify
• fly.toml → Fly.io
• railway.json / railway.toml → Railway
• render.yaml → Render
• app.yaml → Google App Engine
• Procfile → Heroku or Heroku-like platforms
• .ebextensions/ → AWS Elastic Beanstalk
• serverless.yml → Serverless Framework
• terraform/ / *.tf → Terraform/Infrastructure as Code
• k8s/ / kubernetes/ → Kubernetes

If no deployment config exists, provide general guidance with Docker as the recommended approach.

Step 3: Ask Only If Critical

Only ask the user questions if you cannot determine:

• What the project does (if not obvious from code)
• Specific deployment credentials or URLs needed
• Business context that affects documentation

Otherwise, proceed with exploration and writing.

README Structure

Write the README with these sections in order:

1. Project Title and Overview

# Project Name

Brief description of what the project does and who it's for. 2-3 sentences max.

## Key Features

- Feature 1
- Feature 2
- Feature 3

2. Tech Stack

List all major technologies:

## Tech Stack

- **Language**: Ruby 3.3+
- **Framework**: Rails 7.2+
- **Frontend**: Inertia.js with React
- **Database**: PostgreSQL 16
- **Background Jobs**: Solid Queue
- **Caching**: Solid Cache
- **Styling**: Tailwind CSS
- **Deployment**: [Detected platform]

3. Prerequisites

What must be installed before starting:

## Prerequisites

- Node.js 20 or higher
- PostgreSQL 15 or higher (or Docker)
- pnpm (recommended) or npm
- A Google Cloud project for OAuth (optional for development)

4. Getting Started

The complete local development guide. Include every step. Assume the reader is setting up on a fresh machine.

5. Architecture Overview

This is where you go absurdly deep. Cover directory structure, request lifecycle, data flow, key components, and database schema.

6. Environment Variables

Complete reference for all env vars, including required vs optional, how to get values, and environment-specific settings.

7. Available Scripts

Table of all available commands with descriptions.

8. Testing

Running tests, test structure, writing tests, and frontend testing.

9. Deployment

Tailor this to detected platform (look for Dockerfile, fly.toml, render.yaml, kamal/, etc.).

10. Troubleshooting

Common issues and solutions for database connections, pending migrations, asset compilation, bundle install failures, credentials issues, and framework-specific problems.

11. Contributing (Optional)

Include if open source or team project.

12. License (Optional)

Writing Principles

1. Be Absurdly Thorough - When in doubt, include it. More detail is always better.
2. Use Code Blocks Liberally - Every command should be copy-pasteable.
3. Show Example Output - When helpful, show what the user should expect to see.
4. Explain the Why - Don't just say "run this command," explain what it does.
5. Assume Fresh Machine - Write as if the reader has never seen this codebase.
6. Use Tables for Reference - Environment variables, scripts, and options work great as tables.
7. Keep Commands Current - Use pnpm if the project uses it, npm if it uses npm, etc.
8. Include a Table of Contents - For READMEs over ~200 lines, add a TOC at the top.

Output Format

Generate a complete README.md file with:

• Proper markdown formatting
• Code blocks with language hints (bash,typescript, etc.)
• Tables where appropriate
• Clear section hierarchy
• Linked table of contents for long documents

Write the README directly to README.md in the project root.