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/vm-migration/references/fase3-cluster.md

@@ -0,0 +1,63 @@
+# Fase 3: Cluster Formation (Week 7-8)
+
+Target: Formar cluster 2-node, HA, cleanup
+
+## 3.1 Preparar server.descomplicar.pt como Node A
+
+```bash
+# APENAS apos Fase 2 100% validada
+
+# Backup final completo
+tar -czf /tmp/final-backup-server.tar.gz /etc /home /var/www
+
+# Reformatar com Proxmox (/proxmox-setup)
+# Tornar Node A do cluster
+```
+
+## 3.2 Cluster Formation
+
+```bash
+/proxmox-cluster create --node-a server.descomplicar.pt --node-b cluster.descomplicar.pt
+```
+
+## 3.3 HA Configuration
+
+```bash
+/proxmox-ha configure --critical-vms 200,300
+```
+
+## 3.4 Cleanup
+
+```bash
+# Cancelar easy.descomplicar.pt VPS (apos validacao)
+# Backup final de tudo
+# Documentar nova arquitectura
+```
+
+---
+
+## Backup Strategy Durante Migration
+
+### Fase 1 (EasyPanel)
+
+3 locais:
+1. Containers em easy.descomplicar.pt (original)
+2. PBS Node B backup
+3. easy.descomplicar.pt VPS backup (mantido durante Fase 1)
+
+### Fase 2 (CWP)
+
+Safety net 7 dias:
+1. Server antigo intacto (rollback rapido)
+2. VM CWP -> PBS backups automaticos
+3. Backups manuais /mnt/migration/
+
+RPO: 1h (PBS backups hourly se critical)
+RTO: 2-4h (restore + DNS propagation)
+
+### Fase 3 (Cluster)
+
+Redundancia completa:
+1. VMs em Node A + Node B
+2. PBS primary (Node B 16TB)
+3. PBS secondary remote sync (Node A 12TB)