I've been using Anthropic's Claude Code and autonomous coding agents in production daily as an AI Product Manager & Full-Stack AI Engineer at a B2B SaaS platform.
Like many engineers, my initial workflow consisted of pasting massive, 50-line system prompts into every new session:
"Remember to enforce strict TDD with 80%+ coverage..."
"When designing REST endpoints, enforce idempotency keys and RFC 7807 error schemas..."
"When evaluating AI agent failures, follow systematic failure injection rather than trial-and-error..."
