fix(ui): the dropdown menu is at least as wide as its trigger

lib/shared/widgets/querya_dropdown.dart

@@ -88,6 +88,10 @@ class _QueryaDropdownState<T> extends material.State<QueryaDropdown<T>> {
   var _closingWithExit = false;
   var _exitGeneration = 0;
 
+  /// Keys the trigger so the open menu can be at least as wide as it (#1444).
+  final material.GlobalKey _triggerKey = material.GlobalKey();
+  double _menuMinWidth = 0;
+
   @override
   void initState() {
     super.initState();
@@ -359,6 +363,8 @@ class _QueryaDropdownState<T> extends material.State<QueryaDropdown<T>> {
         _exitGeneration++;
         _closingWithExit = false;
         _menuOpen.value = true;
+        final width = _triggerKey.currentContext?.size?.width ?? 0;
+        if (width != _menuMinWidth) setState(() => _menuMinWidth = width);
       },
       onClose: () {
         // Outside-tap / focus loss: overlay already gone — snap state only.
@@ -381,6 +387,9 @@ class _QueryaDropdownState<T> extends material.State<QueryaDropdown<T>> {
         shadowColor: const material.WidgetStatePropertyAll(
           QueryaDropdownTokens.menuShadowColor,
         ),
+        minimumSize: material.WidgetStatePropertyAll(
+          material.Size(_menuMinWidth, 0),
+        ),
         maximumSize: material.WidgetStatePropertyAll(
           material.Size(double.infinity, effectiveMaxHeight),
         ),
@@ -412,10 +421,11 @@ class _QueryaDropdownState<T> extends material.State<QueryaDropdown<T>> {
           label: label,
           fieldWidth: fieldWidth,
         );
+        final keyed = material.KeyedSubtree(key: _triggerKey, child: trigger);
         if (widget.expandToParent) {
-          return material.SizedBox(width: double.infinity, child: trigger);
+          return material.SizedBox(width: double.infinity, child: keyed);
         }
-        return trigger;
+        return keyed;
       },
     );
 

test/shared/querya_dropdown_test.dart

@@ -46,6 +46,46 @@ void main() {
       expect(box.height, QueryaDropdownTokens.triggerHeight);
     });
 
+    testWidgets('the open menu is at least as wide as the trigger',
+        (tester) async {
+      await tester.pumpWidget(
+        queryaThemeTestShell(
+          child: material.Scaffold(
+            body: material.Align(
+              alignment: material.Alignment.topLeft,
+              child: QueryaDropdown<int>(
+                value: 1,
+                width: 320,
+                items: const [
+                  QueryaDropdownItem(value: 1, label: 'One'),
+                  QueryaDropdownItem(value: 2, label: 'Two'),
+                ],
+                onSelected: (_) {},
+              ),
+            ),
+          ),
+        ),
+      );
+      await tester.pump();
+
+      final triggerWidth = tester.getSize(find.byType(QueryaDropdown<int>)).width;
+      expect(triggerWidth, 320);
+
+      await tester.tap(find.text('One'));
+      await tester.pumpAndSettle();
+
+      final surfaces = find.ancestor(
+        of: find.text('Two'),
+        matching: find.byType(material.Material),
+      );
+      final widest = surfaces
+          .evaluate()
+          .map((e) => tester.getSize(find.byWidget(e.widget)).width)
+          .reduce((a, b) => a > b ? a : b);
+
+      expect(widest, greaterThanOrEqualTo(triggerWidth));
+    });
+
     testWidgets('opens menu and reports selection', (tester) async {
       int? picked;
       await tester.pumpWidget(