The command row was still flat vector chrome, which read as a different
material language than the hand-drawn world. The four commands now use a
painted wood-and-gold plate (secondary, primary, disabled variants) drawn
through a fraction-based nine-patch so the frame keeps its proportions at
every viewport, with the icon and label slots kept inside the plate face.
The raw generations and the nine-patch normalisation are recorded under
docs/runtime/m57_command_plate_provenance/.
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