Restore pre-life-cycle snapshots with working-age villagers and keep dependents near the shared food stock. Add regression coverage for legacy saves, child return-home behavior, and newborn placement.
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
Persist calendar units and inclusive life-stage duration ranges, expose them in the UI, and preserve defaults when loading legacy snapshots. Date formatting now derives from calendar settings.
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>