SEO Content Audit Engine

Complete content and server-level audit engine for blog posts and web pages. Runs seven integrated checks:

1. On-page SEO hygiene (title, meta, headings, internal links, images, OG tags, canonical)
2. AI writing pattern detection and removal (50+ patterns including em dash overuse, vocabulary cycling, sycophantic artifacts)
3. Answer-engine and GEO formatting (definition blocks, step-by-step formatting, FAQ sections, citable statistics)
4. Structured data validation (JSON-LD schema generation for Article, FAQ, HowTo, Product)
5. Readability scoring (sentence length, paragraph length, reading level, scannability)
6. E-E-A-T assessment (Experience, Expertise, Authoritativeness, Trustworthiness signals)
7. Server/codebase configuration (robots.txt, sitemap, redirects, SSR meta rendering, HTTP status codes, canonical implementation)

Designed so someone with zero SEO knowledge can run this on any blog post and get a publication-ready result. Produces a scored report (out of 70) with prioritized fixes, schema code ready to paste, and optional full content rewrite.

Always performs web research on current Google guidelines before making recommendations. No third-party paid tools required.

Includes 1,300 lines of battle-tested audit methodology covering every content-level and server-level factor that affects search ranking, AI citation, and reader trust.