VoiceCat.Mac and VoiceCat.iOS are .NET 10 AppKit and UIKit clients over the shared managed core. The ReplayKit upload extension under native/apple/broadcast remains Swift because it runs under the extension memory limit and writes the versioned shared audio ring.

Build on macOS with Xcode and the pinned .NET workloads:

./scripts/build-native.ps1
./scripts/build-native-ios.sh
dotnet restore clients/apple/VoiceCat.Apple.slnx
dotnet build clients/apple/VoiceCat.Apple.slnx -c Debug --no-restore

Use publish-macos.sh --dry-run to validate an ad-hoc macOS bundle. For distribution, set VOICECAT_CODESIGN_IDENTITY; optional notarization uses APPLE_ID, APPLE_TEAM_ID, and APPLE_APP_PASSWORD.

For a physical iOS device, use build-ios-device.sh and deploy-ios-device.sh. The host and ReplayKit extension require signing profiles with App Group group.me.iamtalon.voicecat. Hardware validation must cover VoiceOver, background and lock behavior, interruptions, route changes, Bluetooth, ReplayKit, and iOS 27 ScreenCaptureKit audio.

The shared ring contract is documented in docs/broadcast-ring-format.md.