An empty account gives a visitor nothing to read, and the daily demo turns are
limited, so learning what the app does cost one of them. `app/starter.py` now
copies a shipped export bundle into each new guest at the point the row is
created. The bundle is two exchanges of the Pokemon demo, which ends on a
knockout and shows an applied change, a refused one, and a milestone.
The guest row is committed before the copy is attempted, so a failure there
still leaves them with an account, and the copy runs inside a savepoint.
The row building that `POST /adventures/import` did inline moved into
`bundle.materialize`, which both callers use. The rate and size checks stayed
in the endpoint: the starter writes a file the server ships, so it has no
untrusted list to cap.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01PacdRuPXSkQQy4ZYdH32hF
