Canary re-proven on this base: reconstruct-from-components trips the
fixture checks; an unpadded fixture trips the non-vacuity assertion.
De-literalizes stale version examples in comments.
Fork the VST3 class UID (beta UID minted+frozen), on-disk name, and display
name by the one channel bit via app_version; couple UID selection to the
channel at compile time so a refactor can't split identity from data.
Vendor Steinberg VST3 SDK (v3.7.9_build_61); add reasampler_vst.vst3 as a second, additive build artifact with pure editor-geometry + bridge-marshal helpers under CTest.