Fix global search by phone number

Global search was only returning results when a phone number was
entered as raw digits. Typing a formatted number — (512) 869-9959,
301-788-8235, 301.788.8235, or 301 788 8235 — returned
“No results found” even when the contact existed with that exact
number on file.

What’s Fixed

• The search bar now recognizes phone numbers regardless of how
  they’re formatted, so every variant resolves to the same contact.
• Name and email search behavior is unchanged.