Large-library responsiveness improvements

Finite pane bounds address repeated SwiftUI layout measurement in large libraries.

What changed

• Finite pane bounds address repeated SwiftUI layout measurement in large libraries.
• Background snapshots keep cleaner and organizer discovery out of view rendering.

Compatibility and availability

Regular file tools require macOS 14.0+. Apple Intelligence features require macOS 26+, an eligible Mac, enabled Apple Intelligence and a ready model.

This entry records a development milestone. A verified customer download is not yet published. The version archive shows current availability separately.