v4.0.2-beta.3

Fixed

• Crash on macOS 26 (Tahoe) when using beautify — BeautifyRenderer was marked @MainActor which caused all rendering code inside NSImage drawing handler closures to violate actor isolation under macOS 26's stricter concurrency enforcement. Removed class-level @MainActor, now only applied to the SwiftUI ImageRenderer methods that actually require it.
• Crash with negative style index — BeautifyConfig.style used Swift's sign-preserving % operator, causing array out-of-bounds when styleIndex was -1 (custom background image). Fixed modulo to always produce a valid index.
• Missing translations — 8 UI strings were missing from localization files. Added translations for all 40 locales. Wrapped "Same as screenshots" with L().
• Beautify custom background lag — custom background images were re-decoded and re-processed (including CIFilter blur) on every draw frame during selection resize. Now pre-rendered to a cached CGImage once when the image or blur setting changes.