# VoiceCat status

Updated: 2026-09-22

## Current state

VoiceCat's supported implementation is .NET 10. The managed protocol, crypto, TLS, server,
CLI, client state, audio engine, Windows client, macOS client, and iOS client are implemented.
Retired implementations and compatibility projects have been removed; this tree contains only
the supported product and its required native media boundaries.

The source-of-truth layout is:

- `proto/voicecat.proto` — wire schema.
- `src/` — protocol, crypto, codec/DSP bindings, server, client core, audio, and CLI.
- `tests/VoiceCat.Tests/` — managed behavior and integration tests.
- `clients/windows/` — WinForms application over the managed core.
- `clients/apple/` — AppKit and UIKit applications over the managed core.
- `native/media/` and `native/rnnoise/` — required Opus/RNNoise shim and vendored RNNoise.
- `native/apple/broadcast/` — required ReplayKit upload extension and shared ring producer.

The physical-device iOS voice path now supports ReplayKit fallback, stable Apple VPIO voice-chat
capture using a paced 20 ms handoff, and true built-in stereo microphone capture. Stereo was
verified on an iPhone 16 Pro Max with a two-channel AVAudioEngine input and distinct left/right
samples; the managed Apple binding requires native use of its otherwise-unmapped stereo polar
pattern constant.

SQLite schema v3 persists channel DRED settings and migrates existing v1/v2 databases with DRED
disabled until explicitly enabled.

## Release gates

- Run real multi-person calls on Windows, macOS, and physical iOS hardware, including adaptive
  20/40/60 ms buffering, duration-aware DRED/FEC, and mismatched input/output endpoints.
- Complete NVDA and VoiceOver navigation/announcement passes.
- Exercise iOS background/lock, interruption, Bluetooth, route-change, ReplayKit, and iOS 27
  ScreenCaptureKit paths on devices. Complete extended mono/stereo/voice-chat switching while
  joined, and verify Windows desktop/per-app stereo sharing.
- Complete Developer ID signing/notarization. The iOS host and ReplayKit extension have been
  distribution-signed and packaged locally; upload the IPA for Apple's server-side validation.
- Run the published Linux container and a 30-minute-or-longer server soak.

## Working rule

Keep this file short. It records only current state and open release gates. Git history is the
implementation diary.