Cloud Culling, Zoom Hitch & Performance

Performance:
- Clouds outside the view or over the render budget stop drawing immediately while they keep drifting.
- Reduced hitching when changing zoom with clouds filling the feed by freezing cloud render selection during the zoom, then soft-fading afterward.
- Fixed Color Invert hammering performance by repeatedly searching for post-process volumes every frame.
- Applied screen-size LOD to wingman AI to cut load when they are small on the feed.