The launch-time repair (hermes_bootstrap -> _early_recovery under the checkout lock) lives in
the tree a killed git rewrites. A merge SIGKILLed while writing hermes_bootstrap.py,
_early_recovery.py, a prefix of hermes_cli/__init__.py or a custody module left every launch
exiting 1 with the marker kept and the tree never restored.
arm_tree_move now publishes the recovery/lock/custody modules, as committed at the move's
pre commit (git cat-file, never the working tree), to <git dir>/hermes-update-recovery/<pre>/
by an atomic directory rename before it writes the marker. The minted launcher catches a
failing checkout import; with the marker present and its pre's closure published it purges
checkout modules, runs restore_interrupted_pull from that copy (same claim and checkout lock:
a live writer still refuses) and relaunches from the restored tree.
(cherry picked from commit 2bc12d9283d90a54f970a354a52f0a95d41bbfb0)
(cherry picked from commit 924b2a9a2d4dde6bc2a9074ff3ee0cd8f87c8684)
c18755d69e