expression-intent-archaeology

Create separate documentation that preserves discovered intent from historical investigation so future readers benefit from your research. Use when: (1) completing code archaeology investigation and needing to ensure discoveries benefit future developers facing the same confusion, (2) recurring questions from team members signal that institutional knowledge needs capture in ADRs or documentation files, (3) team member departure would take critical undocumented context about design decisions with them, (4) creating onboarding documentation where critical context exists only in git history or senior engineers' memories