Drawn by tools/bellhouse-plans.mjs from declared rooms: lobby, control
room, registry, sick bay, creche, vigil hall and plant, coal roads and
the Sump. 2800x2000 at 5 ft to the square, added to the Adventure and
keyed in the Locations table.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>