Pin launcher-owned tilde expansion, require same-buffer dedup hooks, fail closed when hooks kill the target, and document stderr feedback during the pre-window bootstrap wait. Record the observed protocol-version echo and non-Unicode argv panic.
Define the pmacs --gpu FILE contract, protocol-v20 semantic bootstrap, raw Unix path and launcher-cwd transport, pre-window readiness barrier, replica coherence requirements, and behavioral acceptance matrix.
Levi Neuwirth