How I Built 9 Claude AI Features into a Production SaaS

Nine AI features. One production SaaS. Zero hallucinated data in the user's face. That last part is harder than it sounds. This is a full technical breakdown of how I designed, built, and shipped nine Claude Haiku features into CitizenApp — a GDPR-compliant citizen management platform. I'll cover the architecture, the security decisions, the failure modes I had to defend against, and what I'd do differently. Why Haiku, Not Sonnet or Opus Every AI feature in CitizenApp uses claude-h...