hoelee b7a53af943 post: QR pre-download decode gate (EN+ZH) + Argon batch-10 review ...

- 69-module symbol at 20 mm = 0.29 mm/module, refused below a 0.40 mm floor
- 30% centre image on a 29-module symbol knocks out 19% of area, capped at 15%
- maroon #800000 passes WCAG at 10.9:1 but is 1.9:1 on the red channel, so warn only
- 300 dpi export quoted at 50.1 x 56.9 mm with the caption band and pHYs block
- gate reads every code back with jsQR at two densities before the download unlocks
- batch-10 external review: 94/96/88/100, 10 items applied, 2 rejected with reasons

2026-11-10 09:31:43 +08:00

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