done.js:120:H3-124 repair() runs git worktree repair (and its sibling calls)
discarding every child exit code, and moveWt returns "" — success — right
after (done.js:133:H3-135). A failed repair leaves the retired tree's gitdir
back-pointer broken while bee done reports a clean retire (BEE-043 flow).
Found in the 2026-08-21 review.
Propagate the child status; a failed repair names the tree and the command in the report. Repro: retire a tree whose gitdir link cannot be rewritten.