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>

templates/agent-file-template.md

@@ -1,3 +1,11 @@
+---
+type: Template
+title: Agent File Template
+description: >-
+  Auto-generated from all feature plans. Last updated: [DATE]
+timestamp: 2025-09-10T05:58:33.277748+00:00
+layer: wiki
+---
 # [PROJECT NAME] Development Guidelines
 
 Auto-generated from all feature plans. Last updated: [DATE]

templates/plan-template.md

@@ -1,3 +1,11 @@
+---
+type: Template
+title: Plan Template
+description: >-
+  Branch: `[###-feature-name]` | Date: [DATE] | Spec: [link]
+timestamp: 2025-09-10T05:58:33.278294+00:00
+layer: wiki
+---
 # Implementation Plan: [FEATURE]
 
 **Branch**: `[###-feature-name]` | **Date**: [DATE] | **Spec**: [link]

templates/spec-template.md

@@ -1,3 +1,11 @@
+---
+type: Template
+title: Spec Template
+description: >-
+  Template de especificação de funcionalidade para o plugin Care Booking Block Ultimate.
+timestamp: 2025-09-10T05:58:33.278792+00:00
+layer: wiki
+---
 # Feature Specification: [FEATURE NAME]
 
 **Feature Branch**: `[###-feature-name]`  

templates/tasks-template.md

@@ -1,3 +1,11 @@
+---
+type: Template
+title: Tasks Template
+description: >-
+  Input: Design documents from `/specs/[###-feature-name]/`
+timestamp: 2025-09-10T05:58:33.277369+00:00
+layer: wiki
+---
 # Tasks: [FEATURE NAME]
 
 **Input**: Design documents from `/specs/[###-feature-name]/`