THESIS: D64 is a quiet, precise instrument for inspecting one real apartment.

OWN-WORLD: monochrome technical inspection slate; authentic apartment materials and authorship color live only inside the work.

STORY: open the remembered view, inspect or measure, enter Edit only when changing the model, then save or export.

FIRST VIEWPORT: the apartment is primary; a compact mark, view switch and mode control are immediately findable.

FORM: seed f7e08e6b; nearly chrome-free Browse mode, contextual Edit mode, desktop side inspector, 44px mobile controls.

FINISH: unreviewed and undocumented is unfinished; this build ends with the finish review, the verdict, and DESIGN.md