The module-level galleryState kept activeIndex/expanded across models
(the modal is a singleton), so opening model B after navigating model A
started B's gallery at A's last index. Reset activeIndex, expanded and
lastNavDirection in loadExampleImages, the per-model entry point.
- Track last navigation direction and prefetch one extra example ahead
along it, so repeated prev/next clicks stay cache-hot
- Start strip video thumbnails at preload=none and enable metadata
loading only when they scroll into view
- Warm the HTTP cache for examples adjacent to the active one after
expand and on every navigation, so prev/next feels instant (images
only, deduped, low fetch priority)
- Add GALLERY_THUMBNAIL optimization mode (width=160) for the 72px
gallery strip instead of reusing the 450px card thumbnails
- Hint priorities: fetchpriority=high on the main media, low on
strip thumbnails
Will Miao