mk-background and mk-clone-wall-transition tween the card's `top`/`left`.
Layout properties snap to integer device pixels, so the move stutters under
the seek-by-frame capture engine (lint: gsap_non_transform_motion). Both
cards sit at top:0/left:0 in CSS, so the values carry straight over to x/y,
and in clone-wall the later scale composes cleanly with the translate.
Re-rendered both and diffed frames against the previous output — identical,
as intended: this changes how the motion is computed, not how it looks.
Adds scripts/lint-registry-items.mjs (bun run lint:registry-items), which
mounts each item into a throwaway project and lints it. Registry items ship
as `<name>.html`, so `hyperframes lint <dir>` fails with "No composition
found" and these items had never actually been linted — which is how both
errors reached main. Verified the script reproduces the original failure on
the pre-fix source.
Left as a local command rather than a CI gate for now; wiring it up needs
two prior fixes, noted in the PR.
The contributed HTML predates any oxfmt pass, so format:check failed for
42 files in both the Format and Preflight jobs. All 29 items re-rendered
after formatting and verified against frames — no visual change.
Miguel Angel Simon Sierra