- Introduced a new SVG asset for the raven silhouette.
- Updated CSS to position and style the raven animation layer.
- Implemented `RavenBurstCanvas` and `RavenFlock` components for rendering animated ravens using Three.js.
- Enhanced `GateTransitProvider` to manage raven animation state and integrate with existing transition logic.
- Added `ravenFx` type and default values for controlling raven animation properties.
- Adjusted transform origins and z-index for improved visual alignment during transitions.
