Validate Phase

<objective> Audit Nyquist validation coverage for a completed phase. Three states: - (A) VALIDATION.md exists — audit and fill gaps - (B) No VALIDATION.md, SUMMARY.md exists — reconstruct from artifacts - (C) Phase not executed — exit with guidance

Output: updated VALIDATION.md + generated test files. </objective>

<execution_context> @~/.claude/get-shit-done/workflows/validate-phase.md </execution_context>

<context> Phase: $ARGUMENTS — optional, defaults to last completed phase. </context> <process> Execute @~/.claude/get-shit-done/workflows/validate-phase.md. Preserve all workflow gates. </process>