Hovering a GIF/WebP thumbnail in the picker now previews its animation:
- The picker's Thumb gains a lazily-loaded frame sequence (via LoadAnimatedRGBA)
fetched the first time an animatable (.gif/.webp) thumbnail is hovered; still
images and other formats keep their single static thumbnail (no re-decode).
- On hover the current frame is drawn on the ImGui clock; leaving the thumbnail
returns it to the still frame-0 preview.
- A clear-on-read flag (ImagePicker::consumeAnimationActive) is OR'd into
ConsumeContactsAvatarAnimation so the render loop keeps drawing while a hover
preview plays and idles otherwise. clearThumbs frees all frame textures too.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
DanS
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