# core/concepts — Log

OKF reserved file (no frontmatter). Change history, newest first, ISO 8601 dates.

## 2026-07-24
- Added [frontmatter-format](frontmatter-format.md) — the repo-wide house frontmatter (`type` + `title` + `timestamp` on every tracked `.md`) + the Frontmatter Gate and registry (D63). Indexed.

## 2026-07-21
- Added [design-craft](design-craft.md) — the UI/UX practice a design agent applies (perception/cognition evidence, craft moves, accessibility floors, recorded anti-patterns); promoted from `planning/design/attention-research.md` (D60). Indexed.

## 2026-07-18
- Added [health-anchors](health-anchors.md) — the second anchor class: work anchors to a KR or a declared, capped, PM-reviewed health budget (D59). Indexed.

## 2026-07-01
- Added [design-loop](design-loop.md) — UI/UX design as a Review-Gate-gated, presentation-only sub-flow of Build (brief → design → reconcile → build → design-sync); D48. Indexed.
- Added [self-refining-harness](self-refining-harness.md) — the harness improves from its own run evidence via detect → draft → PM-gate, bounded at L3 (D47). Indexed.

## 2026-06-29
- Creation — per-folder index/log added (OKF recursive progressive disclosure; D29 reversal direction).