Replace the flat gold-mosaic chapel with marble revetment walls, a
Cosmatesque stone floor, and a coffered timber ceiling, matching
Santa Sabina / San Vitale reference interiors.
New procedural surfaces in galleryProceduralTextures.ts:
- marble-revetment: book-matched veined panels in moulded travertine
surrounds (each panel mirrored about its centre)
- marble-opus-sectile: cut-stone bays with diagonal diamond inlays and
corner triangles in porphyry, verd-antique, giallo, and grey
- coffered-wood: recessed walnut coffers with lit beam chamfers
Add a byzantine detail set to MovementHallDetails.tsx: engaged porphyry
colonnettes with white-marble basket capitals and impost blocks carrying
the ceiling, a marble revetment dado, and hanging brass polycandela.
Colonnettes stay flush in the corner pockets so they do not clip the
~0.7m frame hang margin.
Basilicas are lit by shafts from high windows rather than evenly
flooded, but the shared hall lights carry a brightness floor that
prevented dimming. Add an opt-in lightScale to the interior style that
scales the scene, hall, track, and HDR environment lights. It defaults
to 1, so all other halls are unchanged; only Byzantine opts down. Window
fill lights are left unscaled so the daylight shafts still read.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
