demo: cloudflare workflows

a multi-step workflow with sleeps between steps. each step is durably checkpointed. if the underlying worker restarts mid-run, the workflow resumes from the last completed step without re-executing prior work. good for long-running async jobs: onboarding flows, video processing, scheduled retries, saga patterns.

# the workflow steps

1. step-1-uppercase: uppercase the input
2. pause-3s: sleep 3 seconds (durable — survives worker restart)
3. step-2-reverse: reverse the string
4. pause-3s-again: sleep 3 seconds
5. step-3-length: measure length

total: ~6-8 seconds. compare that to a plain worker which would time out after 30s cpu, or block a request for the full duration.

# config