Search "JOHN SMITH" instead of "JOHN" so the regression test only matches
through the customer name column ("john" alone also matched the email),
ensuring case-insensitive name matching is verified on its own.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01HUfxyr6EcRi4EYSX1wLoRh