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THE RAMP. The Driver reported that 60-149 reads as the same red as the 150+
heartbeat bin. The old ramp was mathematically even and he was still right --
that tension was the finding, not a contradiction. Measured in plain sRGB
distance the top step (60.0) looked like the LARGEST in the ramp; that
measurement was lying, because RGB distance is not perceptual. Re-measured as
deltaE the old steps were 15.5 / 15.8 / 16.7 / 17.7 -- nearly flat, while chroma
collapses at the dark end so hue and saturation stop carrying information there.
The new ramp deliberately ACCELERATES toward the dark end: 14.1 / 17.9 / 21.4 /
24.9. Top-bin separation 17.67 -> 24.94, a 41% improvement on exactly the pair
he named, and total lightness range widens from 37.2 to 49.0 L*.
A named greyscale ramp ships alongside it, grey to black, as he asked ("just in
case i need to swap from red to black scale"). Its steps measure 22.8 / 22.4 /
22.4 / 22.8 -- near-perfectly even, every step well above the ~10 threshold for
clear distinguishability. It is an OPTION, selected by name; the red ramp
remains the default, so no prior decision is silently reversed.
Bin EDGES are untouched -- check:heartbeat passes, which replays the bin
assignment and fails if a default moves.
THE INTEROP GATE. verify:interop drives the actual compiled cap-4 composites in
a real browser against live data, closing the gap verify:gate1 leaves open. On
its first run it PASSED both desktop directions: a facet-rail click narrowed the
grid to "Showing 1,309", and selecting three rows moved the camera from
28.000,18.000@1.45 to 73.666,13.162@2.48 -- read back off the live map, not
inferred. It asserts the grid's live count line rather than card count, because
card count is a proven false-negative (always 24).
It ships with verify:interop:self-test, a two-mode negative test -- grid-prop
freeze and camera freeze -- each required to fire its own combination-named
failure. A harness that has only ever reported PASS is unproven.
Gates: sfc-parse, template-literal, one-palette, synced-css, mjs-parse,
heartbeat, doc-scripts all pass.
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| src | ||
| index.html | ||
| index.js | ||
| research-map.meta.json | ||
| research-map.vue | ||