# Plan Backlog

## Completed phases

- **Phase A — Engine Foundation** (tag: `phase-a-complete`) — domain model, parsers, participant tracker, frame processor, config persistence, fakes, CI with 80% coverage gate.
- **Phase B-1 — Pipeline Orchestration** (tag: `phase-b-1-complete`) — `NdiReceiver`, `NdiSender`, `ExponentialBackoff`, `NdiRuntimeProbe`, `IsoPipeline` (with restart supervisor), `IsoController`. All testable on Linux.
- **Phase B-2 — Real NDI Interop** (tag: `phase-b-2-complete`) — production `NdiInteropPInvoke` against NDI 6 SDK, managed BGRA scaler with aspect modes, `TeamsISO.Console` headless smoke runner, `NdiVersion` constants. **Compiles on Linux; runs only on Windows with the NDI Runtime installed.**

## Next

1. **Phase C — UI & Packaging** (Windows) — WPF MVVM app on top of `IIsoController`. Participant list (DataGrid bound to `Participants` observable), global settings view (framerate, resolution, aspect, audio mode), engine alert banner, system health indicators. WiX MSI installer, release pipeline on tag, About dialog.

2. **First Windows validation** — once on a Windows machine: install NDI Runtime, run `dotnet build`, run `dotnet test --filter "requires=ndi"` against an NDI Test Pattern source, run `TeamsISO.Console --enable-all` against a real Teams meeting.