Add SEO skills 19-28, 31-32 with full Python implementations

12 new skills: Keyword Strategy, SERP Analysis, Position Tracking,
Link Building, Content Strategy, E-Commerce SEO, KPI Framework,
International SEO, AI Visibility, Knowledge Graph, Competitor Intel,
and Crawl Budget. ~20K lines of Python across 25 domain scripts.
Updated skill 11 pipeline table and repo CLAUDE.md.
Enhanced skill 18 local SEO workflow from jamie.clinic audit.

Note: Skill 26 hreflang_validator.py pending (content filter block).

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

custom-skills/26-seo-international/desktop/tools/websearch.md

@@ -0,0 +1,40 @@
+# WebSearch
+
+## Purpose
+
+Search the web for current international SEO best practices, hreflang implementation guides, and regional search engine requirements.
+
+## Common Search Queries
+
+### Hreflang Best Practices
+```
+WebSearch: "hreflang implementation best practices 2025"
+WebSearch: "hreflang common errors fix"
+WebSearch: "x-default hreflang when to use"
+```
+
+### Regional Search Engines
+```
+WebSearch: "Naver SEO requirements Korean websites"
+WebSearch: "Baidu SEO China market entry"
+WebSearch: "Yahoo Japan SEO vs Google Japan"
+```
+
+### International URL Structure
+```
+WebSearch: "ccTLD vs subdomain vs subdirectory international SEO"
+WebSearch: "Google recommendations international targeting"
+```
+
+### Korean Market Expansion
+```
+WebSearch: "Korean business international SEO Japan market"
+WebSearch: "CJK URL encoding SEO best practices"
+```
+
+## Usage Pattern
+
+1. Search for domain-specific international SEO intelligence
+2. Verify current Google documentation on hreflang
+3. Research regional search engine requirements for target markets
+4. Find competitor international SEO strategies