Development record

A cloud hand-back run again within the same second, saying the same things, writes a report identical to the one already committed, because finished_at counts whole seconds and nothing else in the report changes. git commit then has nothing to commit, and hand-back says git or a commit hook refused the commit and falls back to the tracking issue. The merge queue hit this in TestHandBackPushesToWIPBranchThroughTheHook on a fast Linux runner; the test now pins the clock and makes the second report differ, but the script's message still misnames the cause.