TEST-ONLY: apply syncSurfaceDepthIndicator's per-surface indicator-attribute
logic (ICDAS data-depth/data-icdas badge + SP5 Task 4 data-radio) to a
single hand-built .surface-cell element, without requiring a live grid /
initOdontogram() (which needs real SVG-asset fetches). Not part of the
public API.
TEST-ONLY: apply
syncSurfaceDepthIndicator's per-surface indicator-attribute logic (ICDASdata-depth/data-icdasbadge + SP5 Task 4data-radio) to a single hand-built.surface-cellelement, without requiring a live grid /initOdontogram()(which needs real SVG-asset fetches). Not part of the public API.