// chris johnsonField notes on cybersecurity, AI-assisted development, infrastructure, and the craft of shipping things that actually work.
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A technical walkthrough of 16 site improvements shipped in a single Claude Code session: reading progress bars, dark mode, fuzzy search, a contact form, code playgrounds, a guestbook, achievement badges, and more.
How I built a subscriber-gated comment system with thumbs up/down reactions, admin moderation, and a one-time welcome email blast, including the PowerShell quirks and Vercel WAF rules that nearly blocked everything.
How I built a full newsletter system for this site with secure subscriptions, HMAC-verified unsubscribes, branded HTML emails, and a Vercel Cron that sends a weekly digest every Monday. Includes the WAF rule that broke everything and the firewall tightening that followed.
How I built a custom analytics system with interactive visualizations, IP intelligence, and a Leaflet world map, using Next.js, Neon Postgres, and Claude Code. Includes the full Vercel Analytics integration and why custom tracking fills the gaps.