nx_cdmap_pixjudge_lib.nx

nx_cdmap_pixjudge_lib.nx -- the position map's PIXEL REFEREE (datavis DV2, 2026-09-15): the emitted cdmap SVG is re-drawn as INK and the readability defects are counted on the pixels. Every player label is rasterised glyph by glyph through the sovereign TrueType engine (nx_ttf_fontlib, the browser's own font renderer: real outlines, real hmtx advances, the pen walk tf_draw_text walks) and every mark is a filled disk; then: two labels whose ink shares a pixel (LL), a label whose ink enters ANOTHER player's disk (LM), a label whose ink leaves the plot frame (OFF), marks whose disks overlap (MM, the centre-distance rule cl_critic uses, a data property). DEFECTS = LL + LM + OFF, the same sum the emitter publishes, so the pixel vector and the published vector compare slot for slot. SPREAD is a data property, not an ink property, and is not re-derived here. WHY: the self-grade counts BOXES whose width is a heuristic (CL_TEXT_W_PERMIL per glyph); a face wider than the heuristic, or a run of wide glyphs, overlaps in ink while the boxes stay apart -- a font-metric drift the box arithmetic cannot see. This ruler is the in-estate half of the liar-killer: it renders through a second path (glyph coverage, not box arithmetic) and disagrees when the picture does. A foreign browser stays an oracle outside the path. A label's OWN mark is skipped by design, exactly as cl_critic skips it (a halo label sits on its mark on purpose). Ink = coverage at or above CRG_INK_MIN of 255: an anti-aliased fringe is not ink a reader collides on. The figure grammar is cr_scan's (composed, never re-implemented). license_tier: ORIGINAL. No hw writes (Rule 26).