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>

api/README.md

@@ -1,3 +1,11 @@
+---
+type: Reference
+title: Readme
+description: >-
+  API Node.js/Express com queries diretas à BD Desk CRM
+timestamp: 2026-02-04T03:23:33.606360+00:00
+layer: wiki
+---
 # Dashboard Descomplicar API
 
 API Node.js/Express com queries diretas à BD Desk CRM.