Cloudflare Workers + Hono + D1 + KV + R2 stack with 4 specialized AI agents (onboarding, troubleshoot, asset, billing), OpenAI function calling with 7 tool definitions, human escalation, pending action approval workflow, feedback collection, audit logging, i18n (ko/en), and Workers AI fallback. 43 source files, 45 tests passing. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>