Convert SEO Routes to Ability Delegation

[chubes4]

Summary

Convert all SEO-related REST routes to delegate to extrachill-seo plugin abilities instead of containing business logic directly.

Current State

• SEO routes contain embedded business logic for audits, analysis, and configuration
• Direct calls to SEO functions throughout route handlers
• No delegation to Abilities API

Routes to Convert

• POST /wp-json/extrachill/v1/seo/audit → delegate to extrachill/run-seo-audit ability
• GET /wp-json/extrachill/v1/seo/status → delegate to extrachill/get-seo-results ability
• GET /wp-json/extrachill/v1/seo/config → delegate to extrachill/get-seo-config ability
• PUT /wp-json/extrachill/v1/seo/config → delegate to extrachill/update-seo-config ability
• POST /wp-json/extrachill/v1/seo/continue → delegate to extrachill/run-seo-audit (batch mode)
• POST /wp-json/extrachill/v1/seo/details → delegate to extrachill/analyze-url ability

Implementation Pattern

function extrachill_api_seo_audit_handler($request) {
    $input = extrachill_api_rest_to_ability_input($request, [
        'mode' => 'mode',
        'blog_id' => 'blog_id', 
        'checks' => 'checks'
    ]);
    
    $result = wp_execute_ability('extrachill/run-seo-audit', $input);
    return extrachill_api_ability_to_rest_response($result);
}

Success Criteria

• All SEO REST endpoints maintain exact same external interface
• Business logic removed from API plugin and delegated to extrachill-seo abilities
• Backward compatibility maintained for existing consumers
• Performance improved by removing business logic from API layer

Dependencies

• Requires completion of "Add Ability Delegation Wrapper Infrastructure" issue
• extrachill-seo plugin abilities already implemented and available