[rudycelekli]

references/responsive.md says the mechanical half runs at eight widths, including 1440: horizontal scroll and overflow-x: clip (34), wrapping controls (49), image tracks and display heads (50), radio tabs (53), stacked sticky elements (56). Gate 34 is "Horizontal scroll at any width 320 to 1920".

Those checks live in observe(), and observe() only runs on WIDTHS. That array was [320, 375, 414, 768, 1024, 1280, 1920]. The existing 1440×900 pass calls observeSpace(), which scores fold and space (F17, F18, 59, 69). It does not run the scroll or wrapping checks, so 1440 was a hole between 1280 and 1920.

WIDTHS is now [320, 375, 414, 768, 1024, 1280, 1440, 1920], the same list responsive.md names. Fold, contrast, and the sticky check stay on the 1280 pass (width === 1280). Screenshots stay at 1280 and 375. README already says "eight widths", so it is unchanged.

Verified with a node check that the array matches the eight numbers in responsive.md, and that the observe() call sits on the WIDTHS loop while observeSpace() stays on the separate 1440×900 / 1920×1080 loop.

[vercel]

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