Creates the complete src/planemapper/ layout with all module stubs,
provisioning and renderer subpackages, airports.csv data bundle,
systemd unit files, and full test scaffold. All three quality gates
pass: pytest 12/12, ruff check zero violations, ruff format clean.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Initialises implementation-artifacts/ with sprint-status.yaml covering all
14 stories across 4 epics. Promotes architecture.md and epics.md from
untracked state. Sprint 1 branch is now ready for autopilot execution.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>