{
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  "purpose": "Explicit selected-artifact and build-input roots retain runtime libraries, development outputs, sources and host tools for reuse. The existing global GC policy is unchanged.",
  "global_policy_changed": false,
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  "retained_paths_sha256": "4729920dd419c768c3f25d6ff63699f0de01afa21f16eb0bf82779baadb215b4",
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  "build_closure_command": [
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    "1",
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  "exit_code": 0,
  "limits": [
    "This is a host-local retention snapshot, not board deployment or guest verification.",
    "New derivations after actual source/config/input changes may still need builds. Roots must remain for retention."
  ],
  "build_closure_gc_root_verified": true,
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}