Update README with CoSAI donation notice

Project CodeGuard has been donated to the Coalition for Secure AI (CoSAI).
Replace README content with notice directing users to the new repository
at github.com/cosai-oasis/project-codeguard for updates and contributions.

Author: santosomar

README.md

@@ -1,101 +1,8 @@
-# Project CodeGuard: Security Skills and Rules for AI Coding Agents
-![Securing](https://img.shields.io/badge/Securing%20AI%20Generated%20Code-green)
-![Open Source](https://img.shields.io/badge/Now-Open%20Source-brightgreen)
-[![License: CC BY 4.0](https://img.shields.io/badge/License-CC%20BY%204.0-lightgrey.svg)](https://creativecommons.org/licenses/by/4.0/)
+## Project CodeGuard has been donated to the Coalition for Secure AI (CoSAI)!
 
-This project is an AI model-agnostic security framework and ruleset (internally nicknamed "Project CodeGuard" when developed at Cisco) that embeds secure-by-default practices into AI coding workflows (generation and review). It ships core security rules, translators for popular coding agents, and validators to test rule compliance.
+This project is now maintained by the Coalition for Secure AI (CoSAI).
 
+**➡️ New Repository: [github.com/cosai-oasis/project-codeguard](https://github.com/cosai-oasis/project-codeguard)**
 
-## Why Project CodeGuard?
 
-AI coding agents are transforming software engineering, but this speed can introduce security vulnerabilities. Is your AI coding agent implementation introducing security vulnerabilities?
-
-- Skipping input validation
-- Hardcoding secrets and credentials
-- Using weak cryptographic algorithms
-- Relying on unsafe functions
-- Missing authentication/authorization checks
-- Missing any other security best practice
-
-Project CodeGuard solves this by embedding security best practices directly into AI coding agent workflows. 
-
-**During and After Code Generation.**
-
-Project CodeGuard is designed to integrate seamlessly across the entire AI coding lifecycle. 
-- **Before code generation**, skills and rules can be used for the design of a product and for spec-driven development. You can use the rules in the “planning phase” of an AI coding agent to steer models toward secure patterns from the start.
-- **During code generation**, skills and rules can help AI agents to prevent security issues as code is being written.
-- **After code generation**, AI agents like Cursor, GitHub Copilot, Codex, Windsurf, and Claude Code can use the rules for code review. 
-
-
-## Security Coverage
-
-Project CodeGuard skills and rules cover essential security domains:
-
-- **Cryptography**: Safe algorithms (including post-quantum cryptography), secure key management, certificate validation
-- **Input Validation**: SQL injection prevention, XSS protection, command injection defense
-- **Authentication**: MFA best practices, OAuth/OIDC, secure session management
-- **Authorization**: RBAC/ABAC, access control, IDOR prevention
-- **Supply Chain**: Dependency security, SBOM generation, vulnerability management
-- **Cloud Security**: IaC hardening, container security, Kubernetes best practices
-- **Platform Security**: Mobile apps, web services, API security
-- **Data Protection**: Privacy, encryption at rest/transit, secure storage
-
-## Quick Start
-
-Get started in minutes:
-
-1. **Download the skills and rules** from our [releases page](https://github.com/project-codeguard/rules/releases)
-2. **Copy to your project** - Place AI agent and IDE specific skills and rules in your repository
-3. **Start coding** - AI assistants will automatically follow security best practices
-
-- Additional details in the [Get Started →](https://project-codeguard.org/getting-started/)
-
-
-## How It Works
-
-1. **Security skills and rules** are written in unified markdown format (`sources/` directory)
-2. **Conversion tools** translate skills and rules to IDE-specific formats (Cursor, Windsurf, Copilot, Agent Skills, Antigravity)
-3. **Release automation** packages skills and rules into downloadable ZIP files
-4. **AI assistants** reference these skills and rules when generating or reviewing code
-5. **Secure code** is produced automatically without developer intervention
-
-## Repository Structure
-
-```
-sources/           # Source rules
-skills/            # Agent Skills format (generated, committed)
-src/               # Conversion and validation tools
-dist/              # Other IDE bundles (generated, not committed)
-```
-
-## For Developers
-
-```bash
-git clone https://github.com/project-codeguard/rules.git && cd rules
-uv sync
-python src/validate_unified_rules.py sources/  # Validate rules
-python src/convert_to_ide_formats.py  # Generate skills/ and dist/
-```
-
-**More options**: `python src/convert_to_ide_formats.py --help`  
-**Custom rules**: Create your own rules — see [Custom Rules](https://project-codeguard.org/custom-rules/)  
-**Maintainers**: See [CONTRIBUTING.md](CONTRIBUTING.md) for release process.
-
-## Community
-
-- **📋 Issues**: [Report bugs or request features](https://github.com/project-codeguard/rules/issues)
-- **💬 Discussions**: [Join the conversation](https://github.com/project-codeguard/rules/discussions)
-- **🤝 Contributing**: [Learn how to contribute](https://github.com/project-codeguard/rules/blob/main/CONTRIBUTING.md)
-
-
-## Licensing
-
-This project uses dual licensing:
-
-- **Security Rules & Documentation**: Licensed under [Creative Commons Attribution 4.0 International (CC BY 4.0)](https://creativecommons.org/licenses/by/4.0/) - includes all rule files, documentation, and project content
-- **Source Code & Tools**: The `src/` directory is licensed under [Apache License 2.0](src/LICENSE.md) - includes conversion tools, validators, and other software components
-
-This licensing approach ensures the security rules remain freely accessible and reusable while providing appropriate terms for software components.
-
-
-Copyright © 2026 Cisco Systems, Inc.
+Please visit the new repository for the latest updates and how to contribute to the project.