wire_check stops GUI saves 'sent to a different address than the checked form's' on Dolibarr contact and Trac #1907

Both apps' GUI saves never complete: the wire check refuses because the save request goes to a different URL than the checked form's action (Dolibarr card.php, Trac /newticket). Work out whether this is a legitimate redirect or rewrite pattern (same origin, server-declared) that the check should accept with evidence, or a real mismatch. Never accept an arbitrary different address. Data: results/frozen-969cb939/{dolibarr_contact,trac}/matrix.csv.

Found by the API-step generalization experiment (internal#106); data in #1906 under results/. Fix generically (no app-specific code), fail closed, and add a real-app regression test.