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[BeckettFrey]

This pull request adds a new developer agent definition focused on clean code practices. The agent is designed to perform coding tasks with an emphasis on code quality, following principles such as meaningful naming, small functions, and minimal disruption to the existing codebase. The document outlines the agent's philosophy, contribution behavior, and review guidelines.

Agent definition and philosophy:

• Introduced .github/agents/clean-code-developer.agent.md, describing a developer agent that prioritizes clean code principles (e.g., meaningful names, small functions, clear abstractions, and minimal comments) and incremental improvements.
• Outlined specific behaviors for making and reviewing contributions, emphasizing restraint in refactoring and adherence to existing repo style, with explicit steps for proposing and applying code cleanups.
• Clarified tone and communication guidelines for the agent, ensuring direct and precise feedback with rationales for cleanup actions or omissions.

[BeckettFrey]

Actually I'll handle this with the inverse.