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>

dev-tools/skills/xlsx/scripts/office/schemas/ISO-IEC29500-4_2016/shared-relationshipReference.xsd

@@ -0,0 +1,25 @@
+<?xml version="1.0" encoding="utf-8"?>
+<xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema"
+  xmlns="http://schemas.openxmlformats.org/officeDocument/2006/relationships"
+  xmlns:r="http://schemas.openxmlformats.org/officeDocument/2006/relationships"
+  elementFormDefault="qualified"
+  targetNamespace="http://schemas.openxmlformats.org/officeDocument/2006/relationships"
+  blockDefault="#all">
+  <xsd:simpleType name="ST_RelationshipId">
+    <xsd:restriction base="xsd:string"/>
+  </xsd:simpleType>
+  <xsd:attribute name="id" type="ST_RelationshipId"/>
+  <xsd:attribute name="embed" type="ST_RelationshipId"/>
+  <xsd:attribute name="link" type="ST_RelationshipId"/>
+  <xsd:attribute name="dm" type="ST_RelationshipId" default=""/>
+  <xsd:attribute name="lo" type="ST_RelationshipId" default=""/>
+  <xsd:attribute name="qs" type="ST_RelationshipId" default=""/>
+  <xsd:attribute name="cs" type="ST_RelationshipId" default=""/>
+  <xsd:attribute name="blip" type="ST_RelationshipId" default=""/>
+  <xsd:attribute name="pict" type="ST_RelationshipId"/>
+  <xsd:attribute name="href" type="ST_RelationshipId"/>
+  <xsd:attribute name="topLeft" type="ST_RelationshipId"/>
+  <xsd:attribute name="topRight" type="ST_RelationshipId"/>
+  <xsd:attribute name="bottomLeft" type="ST_RelationshipId"/>
+  <xsd:attribute name="bottomRight" type="ST_RelationshipId"/>
+</xsd:schema>