Professionalize repo: badges, contributing, code of conduct, license, and polish for 2.0

Author: gs-ai

CODE_OF_CONDUCT.md

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+# Code of Conduct
+
+As contributors and maintainers of this project, we pledge to foster a welcoming and respectful community for all. We are committed to making participation in this project a harassment-free experience for everyone, regardless of age, body size, disability, ethnicity, gender identity and expression, level of experience, nationality, personal appearance, race, religion, or sexual identity and orientation.
+
+Instances of abusive, harassing, or otherwise unacceptable behavior may be reported by contacting the project maintainer.
+
+By participating, you agree to abide by this code of conduct.

CONTRIBUTING.md

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+# Contributing to PDF Professor
+
+Thank you for considering contributing to PDF Professor 2.0! We welcome contributions of all kinds, including bug reports, feature requests, documentation improvements, and code enhancements.
+
+## How to Contribute
+
+1. Fork the repository and clone your fork.
+2. Create a new branch for your feature or bugfix.
+3. Make your changes and commit them with clear messages.
+4. Push your branch to your fork and open a Pull Request.
+5. Describe your changes in detail in the PR description.
+
+## Guidelines
+- Follow the existing code style and structure.
+- Write clear, concise commit messages.
+- Add or update documentation as needed.
+- Ensure all tests pass before submitting a PR.
+
+## Reporting Issues
+If you find a bug or have a feature request, please open an issue on GitHub with as much detail as possible.
+
+Thank you for helping make PDF Professor better!

LICENSE

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+MIT License
+
+Copyright (c) 2025 mbaosint
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

README.md

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 ![PDF Professor Logo](80f7bd26-6e6a-4236-abf0-6f1418250f99.png)
 
 # PDF Professor 2.0
+[![MIT License](https://img.shields.io/badge/license-MIT-green.svg)](LICENSE)
+[![Python](https://img.shields.io/badge/python-3.10%2B-blue.svg)](https://www.python.org/downloads/)
 
 ## Overview
 
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 ---
 
+## Contributing
+
+Contributions are welcome! Please read the [CONTRIBUTING.md](CONTRIBUTING.md) for guidelines.
+
+## Code of Conduct
+
+This project adheres to a [Code of Conduct](CODE_OF_CONDUCT.md) to foster an open and welcoming environment.
+
+---
+
 ## File Structure
 
 ```plaintext