Background chooser: full system closure (task 3.1)

Evidence class: a host build only.

nix build "git+file://$PWD?rev=64481159d84b3628f8d63b98db7586c5753797db#nixosConfigurations.k230-coherent-shell.config.system.build.toplevel" \
  --max-jobs 1 --cores 4 --option substituters https://cache.nixos.org --fallback

• Source: master 64481159d84b3628f8d63b98db7586c5753797db, which contains the fit-mode commits 681bd4d8 and 05f63ff3.
• Result: /nix/store/zjdyp4mvzlq48a5r5q7zcah57nzy44bh-nixos-system-nixos-26.11.20260919.20b1ddd. nix path-info -S gives a closure size of 4014675488 bytes, 1183 paths.
• The same output path came from an earlier build at a docs-only-different revision, so the closure does not depend on the evidence files.

Ordering

The task asks for this build before board time. It was run after the 3.2 and 3.4 board runs, which used the landscape HDMI boot files (kernelMainlineDrmShellLandscapeHdmiBootFiles) built from the same source commits (see README.md). This record shows that the full k230-coherent-shell closure builds with those commits. It does not change what 3.2 and 3.4 observed.