EXPECTED RESULTS FOR THE SYNTHETIC EXAMPLES

C1/C2: possible duplicate, administrator review
C3/C4: ambiguous shared number, keep separate
C5/C6: conflict warning, do not merge
C5/C6 is supplied as a staff-nominated pair in the example policy; names are not in the CSV and name similarity cannot be recomputed.

These are acceptance criteria, not output from a live or AI test.