Individual skill

refactor-clean

Refactor cleanly instead of layering sediment. Use for rename requests, stale or misleading names, legacy leftovers, changed scope, or when a change reveals duplicated concepts, local adapters, obsolete owners, redundant inputs or guards, compatibility wrappers, parallel abstractions, an over-large module that has accreted many responsibilities, or "just tack this on" pressure in any code area.

skills/engineering/refactor-clean/SKILL.md

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# Clean Refactoring

Replace the old shape with the simpler shape the codebase would want if it were
designed today. Refactoring is not adding a compatibility layer beside the problem;
it is moving ownership until every concept has exactly one clear home. That cuts
both ways: merging N duplicated owners into one, and splitting one over-loaded
module into the several owners it was hiding.

## Workflow

1. Sweep names in every touched path, even when no structural refactor is needed.
   Ask whether each name describes the concept's current scope. Rename misleading
   files, symbols, imported bindings and shared exports immediately; update every
   consumer, test, doc and agent instruction in the same pass. Keep scenario names