Fix phone country code search input being flagged as unknown

Skip inputs with placeholder="Search" or pre-filled values when
they have a "Phone" label — these are country code pickers, not
the actual phone input.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

lib/form_filler.mjs

@@ -587,8 +587,11 @@ Answer:`;
       const lbl = field.label;
       const ll = lbl.toLowerCase();
 
-      // Phone — always overwrite
+      // Phone — fill if empty or tel type, skip country code search inputs
       if (ll.includes('phone') || ll.includes('mobile')) {
+        if (field.placeholder === 'Search' || field.value?.trim()) {
+          continue; // country code search or already filled
+        }
         const el = await byTag(field.tag);
         if (!el) continue;
         await el.click({ clickCount: 3 }).catch(() => {});