Write clear, scannable documentation with a research-first, phase-separated workflow. Pick one Diátaxis mode, then apply STE and Global English. Apply when the user asks for documentation, READMEs, doc sites, API reference, migration guides, or technical markdown. Use marketing-psychology for marketing copy. Use authoring-skills-and-rules to write a Skill, not a README. Not commit-message lint — changelog.mdc owns changelog headings.
