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/ahrefs.md

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+# Ahrefs MCP Tools
+
+## site-explorer-pages-history
+
+Get historical page data for a domain to compare indexed pages with crawled pages.
+
+```
+mcp__ahrefs__site-explorer-pages-history
+```
+
+**Parameters**:
+- `target` (string, required): Domain or URL to analyze
+- `date_from` (string): Start date (YYYY-MM-DD)
+- `date_to` (string): End date (YYYY-MM-DD)
+- `mode` (string): "domain", "prefix", "exact", "subdomains"
+
+**Use case**: Compare Ahrefs indexed page counts with server log crawl data to identify indexing gaps and crawl budget inefficiencies.

custom-skills/32-seo-crawl-budget/desktop/tools/notion.md

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+# Notion MCP Tools
+
+## notion-create-pages
+
+Create a new page in the OurDigital SEO Audit Log database.
+
+```
+mcp__notion__notion-create-pages
+```
+
+**Database ID**: `2c8581e5-8a1e-8035-880b-e38cefc2f3ef`
+
+**Required Properties**:
+- `Issue` (Title): Report title in Korean with date
+- `Site` (URL): Audited website URL
+- `Category` (Select): "Crawl Budget"
+- `Priority` (Select): Based on waste percentage (Critical >20%, High >10%, Medium >5%, Low <5%)
+- `Found Date` (Date): Audit date (YYYY-MM-DD)
+- `Audit ID` (Rich Text): Format CRAWL-YYYYMMDD-NNN
+
+**Content**: Full crawl budget report in Korean with technical English terms preserved.

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

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+# 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