Initial commit: SEO rule engine, auditor, validator, exceptions, mirror

Versioning ~/seo-tools as critical SEO infrastructure (was home-dir only).
Canonical home of seo_rules.py — ResearchOwl will vendor a copy with a CI diff
guard against this repo. No secrets; Ghost access is via the ghst-en wrapper.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

.gitignore

@@ -0,0 +1,6 @@
+__pycache__/
+*.pyc
+*.pyo
+.env
+*.token
+*cache*.json