The deterministic offline demo: a scripted fake agent builds a small orders app so the whole flow can be shown with no agent CLI and no model.

## TLDR

- Optional variants make the scripted build pause on each kind of interactive gate (single choice, checklist, plan approval), so the ask-and-resume flow is demonstrable offline too.
- Each turn reports a small plausible spend, so the live cost readout has something to show.

## Before writing SPEC.md files

Read https://raw.githubusercontent.com/brillout/sdd/refs/heads/main/sdd.md
