A Billion Token Lesson: Because You Can ≠ You Should Agent Autopsy, Day 6 Last week I spent a weekend building a product nobody asked for. I didn't catch it in time. Let me tell you how it happened. The trap Nicolas Fränkel published a piece on designing teams of AI agents — specialist subagents that collaborate on software engineering tasks. Planner, challenger, coder, tester. Each with a focused system prompt, each with limited tools, orchestrated through a skill. It's good work. I read it and immediately thought: we should build this for SPFx. A TypeScript specialist harness. Four agents — Architect, Scaffolder, Builder, Verifier — in a deterministic pipeline. Zod-validated handoffs between them. Compliance injected at build time, not bolted on after. Terminal CLI, BYO token, no desktop app. I had the architecture designed in 15 minutes. The pipeline spec. The agent system prompts. The handoff packet schema. Everything. Then I stopped and asked: is anyone actually looking for this? The answer was no.…