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+# JustEnoughVCS Contribution Guide
+
+Welcome to the JustEnoughVCS (referred to as `JVCS`) project! Before you start contributing, please read this guide carefully to ensure a smooth contribution process.
+
+## Project Structure
+
+JustEnoughVCS adopts a modular architecture that separates core functionality from frontend tools into different repositories:
+
+### Core Repositories
+- **Core Library**: https://github.com/JustEnoughVCS/VersionControl
+- **Command Line Frontend**: https://github.com/JustEnoughVCS/CommandLine
+
+## Contribution Process
+
+### 1. Preparation
+
+**Core Library Contribution**:
+- Fork the core repository to your GitHub account
+- Clone it locally using SSH
+
+**Frontend Contribution**:
+- Fork the corresponding frontend repository
+- Clone it locally using SSH
+
+### 2. Project Directory Structure
+
+All frontend projects follow a unified directory structure:
+
+```
+.
+├── <Frontend Name>
+│   ├── src/           # Frontend source code
+│   ├── Cargo.toml     # Rust project configuration
+│   └── README.md      # Project documentation
+└── VersionControl/    # Core library reference
+    ├── src/
+    ├── Cargo.toml
+    ├── CONTRIBUTING.md
+    ├── LICENSE-MIT.md
+    └── README.md
+```
+
+### 3. Development Environment Setup
+
+1. Ensure you have the Rust toolchain installed
+2. Clone the project locally
+3. Configure the development environment according to the README instructions in each repository
+
+### 4. Submitting a Pull Request
+
+1. Create a feature branch in your forked repository
+2. Implement your feature or fix
+3. Write appropriate test cases
+4. Ensure your code passes all existing tests
+5. Write clear commit messages
+6. Create a Pull Request to the main repository
+
+## Important Notes
+
+- Please ensure your code follows the project's coding standards
+- Before submitting a PR, sync with the latest changes from the main repository
+- For significant changes, it's recommended to discuss the design approach in Issues first
+
+Thank you for contributing to the JustEnoughVCS project!