docs(okf): frontmatter OKF + rich abstracts nas descriptions

Normalizacao OKF dos .md: type/title/description/timestamp/layer +
descriptions factuais (rich abstracts). Apenas .md tracked; corpos intactos.
Parte da aplicacao OKF a /Dados/Dev (28-06-2026).

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

UNIT_TESTS_MODELS_SUMMARY.md

@@ -1,3 +1,11 @@
+---
+type: Document
+title: Unit Tests Models Summary
+description: >-
+  Testes Unitários para Modelos Principais do Sistema Healthcare
+timestamp: 2025-09-14T03:24:33.269160+00:00
+layer: wiki
+---
 # 🧪 UNIT TESTS MODELS - CARE API
 **Testes Unitários para Modelos Principais do Sistema Healthcare**