PROJECT FIVE - MULTI-AGENT AND PRODUCTION HARDENING

CHAPTER SUMMARY Chapter 69 turned the single agent into a small kitchen. A supervisor hands each resume to a matcher on a cheap tier, then hands the matcher's small structured result to a writer on a strong tier, so each subagent sees only what it needs. Routing cut the lab's cost by about sixty percent against an all-strong run, measured in made-up units. Exponential backoff, attempt limits, a repeated-call guard, and step limits stopped a deliberately reintroduced repeated-failure bug within four attempts. An honest readiness checklist marked the lab fit for learning and not yet fit for real deployment. KEY TERMS REVIEW Supervisor: an agent that delegates tasks to other agents and collects results. Subagent: an agent that does one narrow job for a supervisor. Context isolation: giving each agent only the information its job requires. Model routing: choosing which model tier handles which task. Retry: trying a failed operation again. Exponential backoff: waiting twice as long after each failed try. Maximum-iteration safeguard: a limit on loop turns so a loop cannot run forever. Graceful failure: ending cleanly with a clear reason. Production-readiness checklist: an item-by-item list of whether a system is fit for real use. Cost ledger: a running count of what each tier has consumed.