1.**First end-to-end validation on Windows** — install NDI Runtime, clone the repo, build the full solution, run the integration tests against an NDI Test Pattern source, run the WPF app and validate against a real Teams meeting. Fix any issues found.
2.**Phase D — WiX Installer & Release** (Windows) — WiX v5 MSI installer detecting NDI Runtime, release pipeline triggering on tag push, code-signing decision implemented.
3.**Optional polish before v1.0** — system health indicators (CPU/GPU/network meters), per-stream framerate display, output thumbnail previews (deferred from v1.5 if useful), MaterialDesignThemes UI polish.