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refactor

Restructure or clean up code with no behavior change, proved by before-and-after checks. Use when: asked to clean up, extract, dedupe or simplify, even one function.

plugins/boshu2/agentops/skills/refactor/SKILL.md

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# Refactor — one structural experiment

Refactor changes structure while preserving observable behavior. It performs one
caller-selected transformation and reports the result. "Behavior-preserving" is
a claim to prove with before/after checks, never to assert.

## What counts as behavior

Unless the caller explicitly excluded a surface, all of these must survive:

- **Messages and exit codes.** Error and output text compares byte-for-byte;
  exit codes, error types and which input raises which error stay the same.
  Scripts and callers parse them. Preserve an inconsistent message and report
  it; normalizing it is a behavior change.
- **Differences between near-duplicates.** When merging duplicated branches,