The shipper's report: with no arguments, cross-remote.sh died under the Mac's bash 3.2 with 'CARGO_ARGS: unbound variable' and
its chain kept the previous exes. Cause: a comment appended to the defaults line in the box-work merge turned OUT, COMPARE,
TARGET_DIR and CARGO_ARGS=() into comment text, so the array was never declared (the same shape build-remote.sh had at 19:5x).
Fix: the line split, and the default tests use [ -n "${CARGO_ARGS[*]:-}" ] in both tools, safe whether or not the array
exists. Proof: the default cross-build from a fork worktree under /bin/bash 3.2.57 built both exes (igneumd.exe 8f7e2ae3...,
igneum-miner.exe 6f8b49d8...). tools/ci/defaults-line-check.sh fails CI on a line where a comment start is followed by an
assignment list (quoted strings, ${...}, $# and [^#] dropped first); self-test fires on the swallowed shape and passes
${a#b}, sed s#x#y#, $# loops and prose mentions; the tree is clean.
Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
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