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>

perfex-dev/skills/perfex-module-basics/SKILL.md

@@ -1,11 +1,6 @@
 ---
 name: perfex-module-basics
-description: Perfex CRM module development basics. Folder structure, init file, file headers, CodeIgniter integration. Based on official documentation only. Use when user mentions "perfex module", "criar modulo perfex", "init file perfex", "module structure".
-author: Descomplicar® Crescimento Digital
-version: 1.0.0
-quality_score: 70
-user_invocable: true
-desk_task: null
+description: Fundamentos de desenvolvimento de módulos Perfex CRM — estrutura de pastas, ficheiro init, headers e integração CodeIgniter. Baseado apenas na documentação oficial.
 ---
 
 # /perfex-module-basics - Estrutura Base Módulos Perfex CRM