A VST hosted in REAPER can call back into REAPER's own API (name-resolved
via audioMaster), so a native ReaSampler instrument reads live project
ext-state directly. Re-frames the seam, D6, and the D1/D2 calculus.
Frame the option space for a MIDI-triggered sampler consuming ReaSampler
banks: the extension-format ceiling (verified vs. vendored SDK headers),
the bank-as-shared-artifact seam, scope tiers, and the forks for Daniel.
daniel