Closed Windows chooser/session gates
Root archived nine exact original payloads. The manifest attributes each result to its source. The first full-suite and intermediate compilation failures are preserved alongside the corrections. The passing720 run covers80f2588; strict Clippy covers3c9e6ee. No GUI or isolated canvas/codec acceptance is implied. Linux work remains deferred by the user. See ../../release-chooser-correction-gate-20260911.md.