The suite-coverage table and the concurrency-scenario prose enumerate
every scenario by number and by the property it pins, so adding one
without listing it leaves the catalogue claiming complete coverage it
no longer has. PR #9 updated the same table for the same reason when it
added 8b/8c/8d/10; this follows it.
Also adds the closing no-scratch-left-behind check that 8a and ALIAS
end with. Scenario 11 is last in the file, so nothing downstream would
have caught a leaked staging path or reader marker.
claude
aee337a1cb
