Build an employee-onboarding agent that has to survive the real world: it spans many steps, waits on a human, and crashes. It creates an account, orders a laptop, pauses for a manager to approve sensitive access, grants it, and sends a welcome, all as an explicit state machine. The counterintuitive hook: an agent that can auto-resume might onboard the same hire twice and order two MacBooks. Across six levels (L0→L5) you'll add durable progress (DatabaseSessionService → Cloud SQL), crash recovery (ResumabilityConfig), a genuine human-in-the-loop pause (LongRunningFunctionTool), and your own idempotency guard, then Ctrl-C the server mid-onboarding and watch it resume from exactly the right step and refuse to order that second laptop. Ships to Agent Runtime with Cloud Trace. 🕒 Americas: Thursday, August 13: 9:00 AM PDT 🕒 Asia-Pacific: Friday, August 14: 9:30 AM IST