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>

marketing/skills/content-marketing-pt/references/vocabulario-br-pt.md

@@ -0,0 +1,22 @@
+# Vocabulario BR -> PT-PT
+
+Tabela de conversao de brasileirismos para portugues europeu.
+
+| Brasileiro | Portugues Europeu | Contexto |
+|------------|-------------------|----------|
+| deletar | eliminar, apagar | Ficheiros |
+| rodar | executar, correr | Programas |
+| startar | iniciar, arrancar | Processos |
+| printar | imprimir | Documentos |
+| plugar | ligar, conectar | Dispositivos |
+| baixar | descarregar | Download |
+| upar | carregar | Upload |
+| tela | ecra | Dispositivos |
+| celular | telemovel | Telefone |
+| arquivo | ficheiro | Documentos digitais |
+| mouse | rato | Dispositivo |
+| site | sitio web, site | Online (ambos OK) |
+| voce | tu (informal), voce (formal) | Tratamento |
+| tranquilo | esta bem, sem problema | Confirmacao |
+| bacana | interessante, fixe | Qualidade |
+| legal | bom, giro | Aprovacao |