gsd-validate-phase

Reconstructing missing validation records from phase artifacts involves scanning existing SUMMARY.md files when VALIDATION.md is absent, deriving the validation history from available artifacts, and generating a reconstructed VALIDATION.md with associated test files.

When phase validation is not executed, the skill exits immediately and provides guidance, meaning it cannot generate or reconstruct validation records for incomplete phases and requires a completed phase with either existing VALIDATION.md or SUMMARY.md artifacts to function.

The skill supports the reconstruction of validation records from SUMMARY.md artifacts, extracting validation history from available phase artifacts and generating a complete VALIDATION.md without requiring the original validation file.

The skill distinguishes between three states: auditing existing VALIDATION.md, reconstructing from SUMMARY.md when validation is missing, or exiting with guidance when the phase has not been executed, ensuring it only processes completed phases.

The skill requires no external dependencies, relying entirely on internal artifact detection logic to audit VALIDATION.md, fill gaps, or reconstruct records from SUMMARY.md, and outputs updated validation files and test scripts.