fix(maestro): keep the draft first when the composer wraps

The attach button precedes the draft in the DOM, so under the ≤520px wrap
rule it took a line of its own above the textarea. An explicit order puts
the draft back on the first line and groups every control below it.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

web/src/styles.css

@@ -3214,8 +3214,11 @@ input.leaf-rename:focus {
     padding-right: var(--sp-2);
   }
 
+  /* `order` keeps the draft on the first line: without it the attach button,
+     which precedes it in the DOM, wraps onto a line of its own. */
   .structured-input-wrap {
     flex: 1 1 100%;
+    order: -1;
   }
 
   .structured-composer .structured-config {