Add Leborn fork notice (LeFuel)

This commit adds Leborn-specific files to mark this repository as a Leborn fork:
- LEBORN.md: project overview and revival roadmap
- NOTICE: upstream attribution
- CONTRIBUTING.md: contribution guidelines
- CODE_OF_CONDUCT.md: Contributor Covenant 2.1
- README banner: signal that this is a Leborn fork

Original upstream: https://github.com/fuel/fuel
License retained: MIT
See LEBORN.md for full context.

Author: Leborn Bot

CODE_OF_CONDUCT.md

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+# Code of Conduct
+
+## Our Pledge
+
+We as members, contributors, and leaders pledge to make participation in our community a harassment-free experience for everyone, regardless of age, body size, visible or invisible disability, ethnicity, sex characteristics, gender identity and expression, level of experience, education, socio-economic status, nationality, personal appearance, race, religion, or sexual identity and orientation.
+
+We pledge to act and interact in ways that contribute to an open, welcoming, diverse, inclusive, and healthy community.
+
+## Our Standards
+
+Examples of behavior that contributes to a positive environment:
+
+- Demonstrating empathy and kindness toward other people
+- Being respectful of differing opinions, viewpoints, and experiences
+- Giving and gracefully accepting constructive feedback
+- Accepting responsibility and apologizing to those affected by our mistakes, and learning from the experience
+- Focusing on what is best not just for us as individuals, but for the overall community
+
+Examples of unacceptable behavior:
+
+- The use of sexualized language or imagery, and sexual attention or advances of any kind
+- Trolling, insulting or derogatory comments, and personal or political attacks
+- Public or private harassment
+- Publishing others' private information, such as a physical or email address, without their explicit permission
+- Other conduct which could reasonably be considered inappropriate in a professional setting
+
+## Enforcement
+
+Instances of abusive, harassing, or otherwise unacceptable behavior may be reported to the Leborn team. All complaints will be reviewed and investigated promptly and fairly.
+
+## Attribution
+
+This Code of Conduct is adapted from the [Contributor Covenant](https://www.contributor-covenant.org), version 2.1.

CONTRIBUTING.md

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 Please read the project contibuting guidelines before creating an issue of sending in a pull request:
 
 https://github.com/fuel/fuel/wiki/Contributing
+
+
+---
+
+## Leborn fork notice
+
+This project is now part of the [Leborn](https://github.com/leborn-dev) initiative. The general Leborn contribution guidelines also apply. See [`LEBORN.md`](./LEBORN.md).

LEBORN.md

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+# About this fork
+
+`LeFuel` is a [Leborn](https://github.com/leborn-dev) fork of [FuelPHP](https://github.com/fuel/fuel).
+
+## Why this fork exists
+
+FuelPHP development effectively halted in 2018, yet several Japanese companies (including Makuake) still rely on it in production. We provide LTS support and a clear migration path to Laravel.
+
+## What we are doing
+
+This fork goes through 5 phases:
+
+- **Phase A: Setup and Analysis** - Docker dev environment, codebase overview, dependency status, compatibility issues
+- **Phase B: PHP 8.x compatibility** - Make the codebase run on PHP 8.x
+- **Phase C: Modernize core dependencies** - Update EOL dependencies to current versions
+- **Phase D: Tests and CI** - Test coverage and matrix CI on GitHub Actions
+- **Phase E: AI-native rebirth and v0.1.0 release** - AI-assisted FuelPHP -> Laravel migration assistant. Run lefuel migrate and let AI propose code-level migration patches.
+
+## Status
+
+This is an **early-stage** fork. The repository was initialized on 2026-05-02 with a full mirror of the upstream codebase. Modernization and Leborn-specific features are tracked in [Issues](../../issues).
+
+Estimated duration to v0.1.0: **1 to 2 weeks** (with Claude Code-augmented development).
+
+## Original project
+
+- Name: FuelPHP
+- Repository: https://github.com/fuel/fuel
+- License: MIT
+
+This fork retains all upstream commit history (see `git log`). Original maintainers and contributors are credited in commit metadata. See `NOTICE` for the formal attribution.
+
+## About Leborn
+
+[Leborn](https://github.com/leborn-dev) is an initiative to revive popular but stalled open-source projects with AI-native enhancements designed for the 2026 era of software. Leborn is sponsored and operated by [LLL Sdn Bhd](https://lll.dev) (Malaysia).
+
+The name "Leborn" is from "Reborn" with the R replaced by L (for LLL).
+
+## License
+
+This fork retains the original MIT license. See `LICENSE`.

NOTICE

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+NOTICE
+
+This product is a derivative work based on FuelPHP.
+
+Source: https://github.com/fuel/fuel
+License: MIT
+
+Original work Copyright (c) FuelPHP Development Team.
+All upstream contributions are preserved in the git commit history of this repository.
+
+----
+
+Modifications and additions in this fork:
+Copyright (c) 2026 LLL Sdn Bhd / Leborn (https://github.com/leborn-dev)
+Released under the same MIT license as the original work.
+
+This fork is part of the Leborn initiative. See LEBORN.md for details.

README.md

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+> **Notice:** This is **LeFuel**, a [Leborn](https://github.com/leborn-dev) fork of FuelPHP. We are reviving this project for the AI era. See [`LEBORN.md`](./LEBORN.md) and [`NOTICE`](./NOTICE) for details.
+
+---
+
 # FuelPHP
 
 * Version: 1.8.2