Verification

Historical verification record for release 0.8.0, executed on 10 October 2026. Measured results and caveats are in docs/TEST-REPORT.md; behavioral rules are in SPECIFICATION.md and CONTRACT.md. These results predate the PWA offline shell and do not certify its installation/offline behavior.

Recorded results — 10 October 2026

Layer	Result
Unit/integration tests	320 passed (npm test)
Chromium browser tests	96 passed (npm run test:browser)
Independent glTF importer	A Three.js glTF importer validates exported bundles
Performance fixture	50-mesh / 2,100-face fixture
Production build	TypeScript/Vite build passed

Browser coverage

• Headless Chromium only — Firefox, Safari/WebKit and real mobile devices are not yet certified.
• Desktop pointer drag/drop, cross-track movement and both resize handles are verified; mobile drag behavior is not supported.
• Native scrollbar dragging is tested in an isolated Chromium launch with the default hide-scrollbars flag disabled.
• GIF exports are decoded with an independent reader (gifuct-js, development-only) and compared with the preview in visible RGB and alpha, including custom colors and transparent outlines.

Readability evidence

• Normal UI text ≥ 4.5:1 contrast against supported surfaces; active-state text, focus and input boundaries ≥ 3:1 in both themes.
• DOM tests inspect visible model/paint/UV/animation/export labels and enabled controls. Palette swatches and canvas artwork are excluded (their colors belong to the artist); disabled controls are exempt.
• Thumb/track scrollbar pairs exceed a 3:1 contrast check in both themes.

This is targeted readability evidence, not a complete WCAG/accessibility certification. WebGL canvas workflows are not fully screen-reader accessible, though panels/inputs are labeled, focus is visible, and dialogs trap focus and support Escape.

Spacing regression (0.8.0)

Five browser checks verify control sizes, non-overlapping tools at 1440/1100/900px, reachable workspace controls, exact numeric editing and an actual PNG download. Screenshots were inspected; interaction/theme/scrollbar regressions remained green.