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>

project-manager/skills/scope/SKILL.md

@@ -1,21 +1,6 @@
 ---
 name: scope
-description: >
-  Validacao de scope v1.0. Verifica rapidamente se o trabalho esta dentro do spec.
-  Detecta scope creep. Sugere criar novo spec para trabalho fora do scope.
-  Use when "scope", "scope creep", "estou dentro do spec", "am I on track",
-  "fora do scope", "alinhado", "derrapagem".
-author: Descomplicar® Crescimento Digital
-version: 1.0.0
-quality_score: 70
-user_invocable: true
-category: productivity
-tags: [scope, validation, spec, creep, alignment, check]
-desk_project: 65
-allowed-tools: Read, Bash, Glob, Grep, mcp__mcp-time
-mcps: mcp-time
-dependencies:
-  skills: [spec]
+description: Validação de scope que verifica se o trabalho está dentro do spec e detecta scope creep.
 ---
 
 # /scope v1.0 - Validacao de Scope