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Decision 3 (Markus, deployment simplicity): drop the proposed sic-run helper. sicd is already a pure v2 frame-peeler, so the inner-hop command is just sicd (incus exec <c> -- sicd) and one binary deploys instead of two. Verified empirically, not assumed: sicd invoking sicd against a two-layer nested frame delivered the payload to the inner hop with correct exit status and clean stderr. Prerequisite is only that sicd is present in every container a chain traverses. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>