Public launch prep, sales page, noise audit

Noise Audit

Published the first independent audit of agent memory quality. Of 10,134 entries across the knowledge base, 9,791 (96.62%) were classified as noise — duplicates, hallucinations, or malformed extractions. The full methodology includes a reproducibility script and public dataset artifacts.

Marketing & Sales

• Sales page rebuilt with pain-led hero, 9-offer structure, and Railway deployment CTA.
• Marketing landing page served at mycobrain.dev root via hostname detection.
• Separate marketing and app surfaces cleanly split via hostname routing.
• Beta signup API alias route added for waitlist capture.

Infrastructure

• Onboarding email sequence automated for first 7 days post-signup.
• Retention tracking infrastructure rebuilt: new migration, API routes, cron jobs.
• Subscription tracking migration aligned with production schema.
• Security headers (X-Frame-Options DENY, CSP frame-ancestors none) on app subdomain.
• CORS helper added for cross-origin retention routes.
• Graph and agents navigation restored with fail-closed auth fallback.