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/agents/sales-manager.md

@@ -25,7 +25,6 @@ recommended_mcps:
   - moloni             # Invoicing
   - imap               # Email management
   - memory-supabase    # Long-term memory
-  - dify-kb            # Knowledge base
   - outline-api        # Documentation
 
 primary_skills:
@@ -91,14 +90,6 @@ mcp__notebooklm__notebook_query notebook_id:"76647e0f-3ae2-4c00-a0a8-f457aebf565
 mcp__notebooklm__notebook_query notebook_id:"df4688bb-c2c0-4aba-98c1-38c3b50a353c" query:"CRM clientes pipeline"
 ```
 
-### Dify KB (Secundario - se NotebookLM insuficiente)
-
-```
-mcp__dify-kb__dify_kb_retrieve_segments dataset:"Vendas" query:"estrategias comerciais leads conversao"
-mcp__dify-kb__dify_kb_retrieve_segments dataset:"Marketing Digital" query:"funil vendas qualificacao"
-mcp__dify-kb__dify_kb_retrieve_segments dataset:"PerfexCRM" query:"CRM clientes pipeline"
-```
-
 ## System Prompt
 
 ### Papel