docs: add CONTRIBUTING.md with detailed contribution guidelines

CONTRIBUTING.md

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+# 🤝 Contributing to Commandor
+
+First of all, thank you for your interest in contributing to Commandor! 🎉
+Your contributions help improve this project and make it even more useful for developers around the world.
+
+Whether you’re fixing a bug 🐛, improving documentation 📝, suggesting new features 🚀, or just testing things out, we welcome your support!
+
+
+## 🛠️ How Can You Contribute?
+
+There are many ways to contribute:
+
+### - Code Contributions
+    - Fix bugs or issues
+    - Add new features or commands
+    - Improve code readability and performance
+    - Write unit tests
+
+### - Documentation
+
+    - Improve or fix README and docs
+    - Add usage examples
+    - Write tutorials or FAQs
+
+### - Community Support
+
+    - Help answer issues
+    - Report bugs
+    - Suggest features or improvements
+
+
+## ⚙️ Getting Started
+### 1. Fork the Repository
+Click the Fork button at the top right of this repo. This creates your own copy.
+
+### 2. Clone Your Fork
+```bash
+git clone https://github.com/<your-username>/Commandor.git
+cd Commandor
+```
+
+### 3. Set Up Development Environment
+```bash
+pip install -e .
+```
+
+### 4. Configure API Key
+
+Create a .env file and add your Gemini API key:
+```bash
+GEMINI=your_api_key_here
+```
+
+
+## 🚀 Contribution Workflow
+Follow these steps when making changes:
+
+### 1. Create a new branch
+Use a meaningful name:
+```bash
+git checkout -b feature/add-docker-support
+```
+
+### 2. Make your changes
+Add code, docs, or fixes.
+
+### 3. Commit with a clear message
+```bash
+git commit -m "feat: add docker usage instructions to README"
+- feat: → new feature
+- fix: → bug fix
+- docs: → documentation change
+- chore: → maintenance
+```
+
+### 4. Push your branch
+```bash
+git push origin feature/add-docker-support
+```
+
+### 5. Open a Pull Request (PR)
+
+- Go to your fork → “Pull Request” → compare with main
+- Describe your changes clearly
+- Link related issues if any   
+
+
+## ✅ Code Guidelines
+- Follow PEP8 coding style for Python
+- Write clear and modular code
+- Add comments for tricky logic
+- Always test your changes before pushing
+- For destructive shell commands → add safety checks
+
+
+## 🧪 Testing
+To test locally:
+```bash
+commandor
+```
+You can try commands like:
+```bash
+/ai list all .py files
+/ask What is Docker?
+```
+If adding new features, write test cases to verify functionality.
+
+## 🐛 Reporting Bugs
+- Use GitHub Issues
+- Include steps to reproduce the bug
+- Share error logs/screenshots if possible
+- Suggest a possible fix (optional but appreciated)
+
+## 🌟 Feature Requests
+- Open an issue with the label enhancement
+- Clearly explain the problem and how your feature solves it
+- Suggest usage examples if possible
+
+## 🧑‍💻 Commit Message Conventions
+We use [Conventional Commits](https://www.conventionalcommits.org/):
+- feat: → new feature
+- fix: → bug fix
+- docs: → documentation only
+- style: → formatting, no logic change
+- refactor: → code change that improves structure
+- test: → adding tests
+- chore: → maintenance tasks
+
+
+## 🤲 Code of Conduct
+
+Please be respectful, inclusive, and constructive.
+Check out our Code of Conduct
+ before contributing.
+
+
+ ## 🙌 Show Your Support
+If you like Commandor:
+- ⭐ Star the repo
+- 📢 Share with your dev friends
+- 💡 Contribute regularly
+
+
+## 📬 Contact
+Created & Maintained by Ravin D
+- GitHub: [ravin-d-27](https://github.com/ravin-d-27)
+
+
+### 🔥 Every contribution counts — let’s make Commandor awesome together!