• Analyze the validation inconsistency between check-sed-available and add-jq tasks
  • Update check-sed-available to use same Nix environment validation pattern as add-jq
  • Change validation command from "which sed" to "cd /project && nix develop -c which sed"
  • Simplify validation logic to stdout.includes("/nix/store") for consistency
  • Verify all tests continue to pass with no regressions
  • Document the fix and process improvement in devlog