Individual skill

universal-invariant-baseline

Use when invoked to apply an invariant-first, fail-fast, special-case-eliminating baseline. Not for domain models in types: use type-driven. Not for design-by-contract: use contract-driven.

.devin/skills/universal-invariant-baseline/SKILL.md

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# Universal invariant baseline

## Contract

| Field | Bound contract |
|---|---|
| Trigger | User explicitly requests an invariant-first, fail-fast, special-case-eliminating baseline for a named implementation. |
| Authority | Reversible local: writes only the named local artifact; rollback is version control (restore) or undo (file deletion). No remote mutation. |
| Side effect | Replace the target local file with its invariant-first, fail-fast, special-case-eliminating refinement. |
| Done | All named invariant checks pass and no unresolved special-case artifacts remain. |

## Inputs

Required: