deckle

What to expose in settings surfaces and how to organize it. Invoke before exposing a setting, organizing a page, or reworking a settings surface.

Testing posture — test behavior not implementation, stay sober, grow coverage per workstream. Invoke before writing a test or extending coverage.

One normalized way to name files, folders, symbols, resources and providers. Invoke before naming or renaming.

How to write the JOURNAL.md. Invoke when recording a finding, or a small decision worth keeping.

What to observe in code, and how to write it readable and actionable. Invoke before adding or changing an observation point.

How versions are numbered and the changelog written. Invoke before cutting a version, writing a CHANGELOG entry, or drafting release notes.

Commit grain and the few deviations from the universal convention. Invoke before committing, splitting a workstream into commits, or auditing history.

Render the visual interface at Microsoft first-party level — native primitives, theme resources, system materials. Invoke before touching any UI surface.

When and along which lines to separate code into modules and files. Invoke before growing a module, judging a new one, or splitting a file or surface.

Write or review UX copy — microcopy, error messages, empty states, CTAs. Trigger with "write copy for", "what should this button say?", "review this error message", or when naming a CTA, wording a confirmation dialog, filling an empty state, or writing onboarding text.