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.claude/skills/ac-expander/SKILL.md

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+---
+name: ac-expander
+description: Turn vague Acceptance Criteria into measurable checks and test assertions
+version: 0.1.0
+tags: [requirements, testing]
+triggers:
+  - acceptance criteria
+  - refine criteria
+  - measurable
+---
+
+# Acceptance Criteria Expander
+
+## Purpose
+Rewrite ambiguous AC into specific, testable checks and edge cases.
+
+## Behavior
+1. For each AC, create measurable statements with inputs/outputs.
+2. Add 2–4 edge cases (bounds, invalid, error paths).
+3. Suggest test names that map 1:1 to checks.
+
+## Guardrails
+- Preserve original intent; show original text and revised version.
+- Keep each AC concise (≤3 lines each).
+
+## Integration
+- Project Manager agent; `/lazy create-feature` refinement step.
+
+## Example Prompt
+> Make these AC measurable and propose matching tests.
+