11 opinionated Claude skills for SEO with bundled references per skill. Canonical per-skill folder layout (SKILL.md + references/) for native Claude Code, Claude Desktop, Cursor, and Claude Cowork discovery. Includes 23 content-type templates, 16 writing technique modules, 9 link-building tactic playbooks, anti-AI-slop ruleset, E-E-A-T scoring rubrics, POP test hierarchy, EAV semantic analysis, and AI Overview impact research.