9. Test hardware matrix (what the user has)

Machine	Standing	Validates
Arch Linux laptop: AMD Renoir iGPU, NVIDIA RTX 3080 Laptop dGPU, Hyprland on Wayland, PipeWire	Primary, the reference	Day-to-day development and the pre-push gate; the golden baselines, blessed and judged on its lavapipe (ADR-0242); hardware readings on its dGPU, named by adapter and driver (ADR-0243); the Linux standalone path and live monitor capture; the live checks of On-device validation, first
Windows dev box	Peer, checked against the reference	The Windows standalone path: DX12, WASAPI loopback and device selection, now-playing, the Spout video-out; the foobar2000 component
Older Windows PC (iGPU)	The floor	The performance floor (§1) on baseline hardware (§2) — still a class rather than a configuration, and the reading is owed (On-device validation)
foobar2000 (installed on the Windows box)	Peer	Plugin loading + visualisation_stream behavior

A reading is taken on the Arch box and checked against on the Windows box. A frame time, a blessed picture, a capture verdict or a rehearsal is first measured on the reference, and it names the machine and the adapter it was taken on (ADR-0071). The Windows box answers whether the same claim holds on the peer platform. A difference there is a Windows finding: it does not correct the reference reading, and it is recorded beside it rather than over it. The §1 floor is the one claim neither box can settle; it waits on the older iGPU PC.

“The dev box” in a reading taken before the move to Arch means the Windows box. The move landed with Plan 0219 on 2026-09-22. A reading in this document dated before then, and not naming its machine, was taken on Windows.

There is no Mac in this matrix, and that is the point of §8’s macOS artifact. An earlier revision of this table listed a “Mac, macOS 13+” as available hardware; it is not, which is why neither the Arch box nor the Windows box can link a Mach-O binary and a macOS runner is the only build host (ADR-0038). The macOS standalone path — Metal through wgpu, ScreenCaptureKit capture, glyphon’s font loading — is therefore validated by a recipient, not in-house, and until one reports back it has never executed on Apple hardware at all.