Market Day Change Test v1.0 — free release
Checked 2026-10-03 Taiwan.

PASSED
- 14 core computation groups, including 1,000 independent exhaustive comparisons.
- 14 actual browser-operation groups in offline Linux Chromium 154.0.8037.92:
  example and revised replay, input invalidation, real JSON download/import,
  real TXT download, malformed/oversized file rejection, cancel preservation,
  count and price errors, 20-row limit/removal, keyboard run activation and
  zero page JavaScript errors. Desktop 1280px and simulated mobile 390px
  layouts had no page overflow; screenshots were visually inspected.
- Browser print-to-PDF rendered and inspected after fixing a footer-only
  second page; the three-sale example now fits one US Letter page.
- One-page companion PDF rendered and visually inspected, with embedded fonts.
- Standalone inline scripts compile, no external network dependencies or
  automatic storage, and ZIP integrity is checked.

LIMITS
Headless Linux Chromium only. Not native Windows/Mac, physical mobile, native
print dialog, physical printer, real-vendor use, hosted download, Whop delivery,
checkout or payment-demand validation. A completed replay covers only its
inputs and change choices, not future customers.

The earlier missing browser-runtime blocker was resolved on 2026-10-03.
This remains a free tool; no paid demand, sales or time savings are claimed.
