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>

infraestrutura/skills/infra-check/SKILL.md

@@ -1,23 +1,7 @@
 ---
 name: infra-check
-description: >
-  MCP Health Check e auditoria de despesas. Sabado: check completo 9 MCPs + auditoria despesas completa. Domingo: check resumido top 5 + despesas sem PDF. Use when "infra check", "mcp health", "health check", "auditoria despesas", "verificar mcps".
-author: Descomplicar® Crescimento Digital
-version: 1.0.0
-quality_score: 85
-user_invocable: true
-category: infrastructure
-tags: [mcp, health-check, infrastructure, audit, expenses, monitoring]
-desk_task: 1710
-desk_project: 65
-allowed-tools: Read, Write, mcp__desk-crm-v3, mcp__google-workspace, mcp__ssh-unified, mcp__filesystem, mcp__mcp-time, mcp__memory-supabase, WebFetch
-mcps: desk-crm-v3, google-workspace, ssh-unified, filesystem, mcp-time, memory-supabase
-dependencies:
-  mcps: [desk-crm-v3, ssh-unified, filesystem, mcp-time]
-triggers:
-  - "User asks about MCP health"
-  - "User mentions 'health check', 'infra check', 'mcp status'"
-  - "Invoked by /today orchestrator on Saturday/Sunday"
+description: Health check de MCPs e auditoria de despesas — sábado check completo 9 MCPs + auditoria despesas, domingo check resumido top 5 + despesas sem PDF.
+context: fork
 ---
 
 # /infra-check v1.0