feat: refactor 30+ skills to Anthropic progressive disclosure pattern

- All SKILL.md files now <500 lines (avg reduction 69%)
- Detailed content extracted to references/ subdirectories
- Frontmatter standardised: only name + description (Anthropic standard)
- New skills: brand-guidelines, spec-coauthor, report-templates, skill-creator
- Design skills: anti-slop guidelines, premium-proposals reference
- Removed non-standard frontmatter fields (triggers, version, author, category)

Plugins affected: infraestrutura, marketing, dev-tools, crm-ops, gestao,
core-tools, negocio, perfex-dev, wordpress, design-media

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

crm-ops/skills/desk/SKILL.md

@@ -1,21 +1,6 @@
 ---
 name: desk
-description: >
-  Contexto de projecto via .desk-project v3.0. Integração /time, status rápido.
-  Use when .desk-project exists, "desk", "projecto", "contexto", "desk-task".
-author: Descomplicar® Crescimento Digital
-version: 3.0.0
-quality_score: 90
-user_invocable: true
-category: productivity
-tags: [desk, crm, projecto, contexto, triangulo, integration]
-desk_task: 1471
-desk_project: 65
-allowed-tools: Read, Write, Bash, mcp__desk-crm-v3, mcp__mcp-time
-mcps: desk-crm-v3, mcp-time
-auto_detection:
-  enabled: true
-  file: ".desk-project"
+description: Contexto de projecto via .desk-project. Auto-detecção, integração com /time, status rápido, criação de tarefas e changelog. Sistema Triângulo Desk-GDrive-Local.
 ---
 
 # /desk v3.0 - Contexto de Projecto