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/28-seo-knowledge-graph/desktop/tools/websearch.md

@@ -0,0 +1,62 @@
+# WebSearch & WebFetch Tools
+
+## WebSearch
+
+Search the web for entity/brand information to detect Knowledge Panel signals, PAA questions, and SERP features.
+
+### Usage Patterns
+
+#### Knowledge Panel Detection
+```
+WebSearch("Samsung Electronics")
+WebSearch("삼성전자")
+```
+
+#### PAA Question Discovery
+```
+WebSearch("what is Samsung Electronics")
+WebSearch("Samsung Electronics reviews")
+WebSearch("Samsung Electronics alternatives")
+```
+
+#### Brand SERP Analysis
+```
+WebSearch("Brand Name official")
+WebSearch("Brand Name site:wikipedia.org")
+```
+
+## WebFetch
+
+Fetch and analyze specific pages for entity presence data.
+
+### Usage Patterns
+
+#### Wikipedia Check
+```
+WebFetch("https://en.wikipedia.org/wiki/Samsung_Electronics", "Check if article exists and extract entity information")
+```
+
+#### Wikidata Check
+```
+WebFetch("https://www.wikidata.org/w/api.php?action=wbsearchentities&search=Samsung&language=en&format=json", "Find Wikidata QID for entity")
+```
+
+#### Naver Encyclopedia
+```
+WebFetch("https://terms.naver.com/search.naver?query=삼성전자", "Check Naver encyclopedia entry")
+```
+
+#### Naver Knowledge iN
+```
+WebFetch("https://kin.naver.com/search/list.naver?query=삼성전자", "Check knowledge iN entries count")
+```
+
+#### Website Schema Extraction
+```
+WebFetch("https://example.com", "Extract JSON-LD structured data, especially Organization, Person, LocalBusiness schemas and sameAs links")
+```
+
+#### FAQ Schema Check
+```
+WebFetch("https://example.com/faq", "Check for FAQPage JSON-LD schema markup")
+```