refactor-implementation

name	refactor-implementation
description	This skill should be used when the user is ready to execute a refactor plan and asks how to apply it safely — e.g. 'implement this modernization plan', 'extract this safely', 'how do I cut over without breaking things'.

Refactor Implementation

Safe transformation techniques for applying modern designs while preserving behavior.

Principles

• Write modern impl beside old (parallel) when risk high.
• Use strangler fig for gradual cutover.
• Validate at each step with ./build.sh check, parity, contracts.
• Prefer direct boring code.

Additional Resources

• references/implementation-playbook.md
• examples/parallel-extract-outline.md

Pair with modern-refactorer agent for larger modules.

Base directory for this skill: /Users/donaldfilimon/abi/.claude/skills/refactor-implementation Relative paths in this skill (e.g., references/) are relative to this base directory.