ORPHAN_MARKER_GAP excused the orphaned_update cell's marker assertion with no
expiry. PR CI never runs that cell (Windows, opt-in) nor strict acceptance,
so after #132354 (hand-off script names its update child as the line-4
delegate) and #132365 (the judge honours a live delegate) land, a regression
of exactly that contract would still pass as an expected failure.
Now the fix's footprint is read from the tree (ORPHAN_MARKER_FIX):
- while any half is absent, _orphan_gap_excuse applies known_failure as before;
- once every half is present the excuse is off, so the cell is strict on any
runner whatever the wrapper says;
- tests/ci/test_windows_update_crash_oracles.py (runs on every PR) fails with
"delete ORPHAN_MARKER_GAP ..." once the fix is in the tree, the same expiry
shape as _LANDS_IN_SIBLING_PR, and fails if the Python half already on this
branch (update_lock.delegate_live) loses its footprint, so a rename cannot
keep the excuse alive.
Checked against the scripts branch: this tree + its marker.ps1/windows.ps1
reads no half missing.
Review CI1.
d6e201432b