9. Test hardware matrix (what the user has)

Machine	Validates
Primary Windows dev box	Standalone Windows path, plugin, day-to-day dev
Older Windows PC (iGPU)	The performance floor (§1) on baseline hardware (§2) — still a class rather than a configuration, and the reading is owed (On-device validation)
Arch Linux laptop (AMD iGPU + NVIDIA dGPU, PipeWire)	The Linux standalone path, live monitor capture, Vulkan on hardware and llvmpipe
foobar2000 (installed)	Plugin loading + visualisation_stream behavior

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 the dev box cannot 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.