Infinite-scroll marquee wall component with sync coordination, FLIP morph support, and composable edge fades for animated or static chip/card walls.
## Key Components
| Export | Type | Description |
|---|---|---|
| `MarqueeWall` | Component | Main infinite-scroll wall (implied by hooks/props wiring) |
| `MarqueeWallFades` | Component | Standalone edge-fade overlays for composite/stacked walls |
| `useMarqueeSync` | Hook | Creates a shared position controller to pixel-lock multiple wall instances |
| `getMarqueeTrackOffset` | Function | Returns the last known translation + wrap of a named wall (survives unmount) |
| `getMarqueeAppliedOffset` | Function | Reads the live DOM transform of a wall's track container |
| `getMarqueeCloneTwin` | Function | Locates the loop-clone twin of an element inside a wall's primary copy |
| `MarqueeSyncController` | Interface | Shared driver registry for synced walls |
| `MarqueeTrackOffset` | Interface | Per-frame position record published to the global offset map |
| `MarqueeWallProps` | Interface | Full prop surface for the wall component |
## Usage Example
```typescript
// Basic animated chip wall
{chips.map(chip => )}
// Pixel-locked pair (e.g. pending vs. resolved overlay)
const sync = useMarqueeSync()
{chips}
{chips}
// Standalone fades over a stacked row layout
// FLIP drift correction — read offset before morph capture
const offset = getMarqueeTrackOffset('cta-wall')
```
## Notes
- `MarqueeWallFades` renders at `z-[1]`, above FLIP flight ghosts (`z-0`), so in-flight chips dissolve under the blur naturally.
- The global `MARQUEE_TRACK_OFFSETS` map intentionally survives unmount to support cross-remount FLIP morphs.
- Clone copy is `aria-hidden` with focusable descendants suppressed via `useSuppressCloneFocus`, but remains clickable.
- Auto-disables under `prefers-reduced-motion` regardless of the `animate` prop.
## Source
[`marquee-wall.tsx`](https://github.com/flamingo-stack/openframe-oss-lib/blob/main/marquee-wall.tsx)