This issue was created to exercise the autonomous runner end-to-end.
**Acceptance:** runner picks this up, demo worker appends a line to docs/krystie-runner-log.md, branch krystie-wip/triangles_v5-1 is pushed, gate fast-forwards to master, this issue auto-closes.
Closes#1
Refs: krystie-wip/triangles_v5-1