# Plan Backlog

Phase A is implemented (tag: `phase-a-complete`). After Phase A merges and CI is green:

1. **Phase B — NDI Interop & Pipeline** — add real P/Invoke shim in `TeamsISO.Engine.NdiInterop`, real `IFrameScaler` against libyuv, `NdiReceiver` and `NdiSender`, `IsoPipeline`, `IsoController`, runtime version probe. Console smoke runner. Integration test suite goes live (Windows + NDI runtime required).
2. **Phase C — UI & Packaging** — WPF MVVM app on top of the engine. Settings view, participant list, alert banner, system health indicators. WiX MSI installer, release pipeline on tag, About dialog.

Each phase gets its own `YYYY-MM-DD-teamsiso-phase-X-<topic>.md` plan written by `superpowers:writing-plans` once the previous phase is shipped.