FFmpegKit 6.0.3 iOS device + simulator XCFramework (UAT)

UAT-only iOS XCFramework bundle from source commit e648323, built with Xcode 26.4 on 2026-09-15. Contains arm64 iPhone device and arm64/x86-64 iOS Simulator variants in all eight frameworks. Build used --xcframework --no-bitcode --enable-ios-videotoolbox --enable-ios-zlib; no --enable-gpl or external GPL libraries were selected. ZIP SHA-256: 1fde8facd3756a0d42550b885a4738cff3589ef5ce54b313f67d3015242061a8. Archive integrity, XCFramework metadata, Mach-O platforms, CocoaPods simulator selection, and a runtime simulator MPEG-4 encode passed. The existing production asset and default URL are unchanged. This candidate device binary has not yet completed physical-device runtime UAT; do not make it a production default without a separate reviewed rollout.