refactor(entries): drop the inline copy button, the row menu carries it

Row is down to label | value (eye inside) | menu.

js/app.js

@@ -4291,17 +4291,15 @@ function buildCustomFieldRow(field, idx, rerender) {
             valueInput.type = field.is_secret ? 'password' : 'text';
     }
 
-    const copyBtn = el('button', { class: 'icon-btn icon-btn-sm', type: 'button',
-                                   title: 'Copy value' });
-    copyBtn.appendChild(icon('i-copy'));
-    copyBtn.addEventListener('click', ev => {
-        ev.stopPropagation();
+    // Copying lives in the row menu only — no button of its own, the row is
+    // already carrying a label, a value and the reveal eye.
+    function copyValue() {
         const v = field.value || '';
         if (!v) return;
         if (Bridge.active) Bridge.copySecure(v, 30000);
         else { try { navigator.clipboard.writeText(v); } catch (_) {} }
         toast('Copied' + clipClearSuffix());
-    });
+    }
 
     // Row menu — reuses the card kebab classes, so the document-level
     // "click outside .entry-kebab-wrap closes it" handler covers it for free.
@@ -4322,7 +4320,7 @@ function buildCustomFieldRow(field, idx, rerender) {
     copyItem.addEventListener('click', ev => {
         ev.stopPropagation();
         kebabMenu.classList.remove('is-open');
-        copyBtn.click();
+        copyValue();
     });
     kebabMenu.appendChild(copyItem);
 
@@ -4367,7 +4365,6 @@ function buildCustomFieldRow(field, idx, rerender) {
 
     row.appendChild(labelInput);
     row.appendChild(valueWrap);
-    row.appendChild(copyBtn);
     row.appendChild(kebabWrap);
     applySecretState();
     return row;