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/32-seo-crawl-budget/desktop/tools/websearch.md

@@ -0,0 +1,18 @@
+# WebSearch Tool
+
+## Purpose
+
+Search the web for current crawl budget best practices, search engine bot documentation, and robots.txt guidelines.
+
+## Usage
+
+```
+WebSearch(query="Googlebot crawl budget optimization 2025")
+```
+
+**Common queries**:
+- Search engine bot crawl rate documentation
+- robots.txt best practices for crawl budget
+- URL parameter handling for search engines
+- Crawl budget optimization techniques
+- Search engine bot user-agent strings