refactor(ui): QueryaIconButton, QueryaSearchField and QueryaTabStrip off shadcn

lib/shared/widgets/querya_icon_button.dart

@@ -1,5 +1,4 @@
 import 'package:flutter/material.dart' as material;
-import 'package:shadcn_flutter/shadcn_flutter.dart';
 import 'package:querya_desktop/core/theme/querya_theme_scope.dart';
 import 'package:querya_desktop/core/ui/querya_control_tokens.dart';
 import 'package:querya_desktop/core/ui/querya_tooltip.dart';
@@ -90,7 +89,7 @@ class _QueryaIconButtonState extends material.State<QueryaIconButton> {
     final isDestructive = widget.isDestructive;
     final color = widget.color;
     final activeColor = widget.activeColor;
-    final cs = Theme.of(context).colorScheme;
+    final cs = context.colors;
     final workbench = QueryaThemeScope.maybeOf(context)?.workbench;
     final radius = widget.borderRadius ??
         material.BorderRadius.circular(controlSize.scaledRadius(context));
@@ -236,7 +235,7 @@ class _QueryaToolbarButtonState extends material.State<QueryaToolbarButton> {
         QueryaControlSize.of(context);
     final isActive = widget.isActive;
     final isDestructive = widget.isDestructive;
-    final cs = Theme.of(context).colorScheme;
+    final cs = context.colors;
     final workbench = QueryaThemeScope.maybeOf(context)?.workbench;
     final isEnabled = onPressed != null;
 
@@ -273,7 +272,7 @@ class _QueryaToolbarButtonState extends material.State<QueryaToolbarButton> {
             ),
             child: icon,
           ),
-          Gap(controlSize.scaledIconGap(context)),
+          material.SizedBox(width: controlSize.scaledIconGap(context)),
         ],
         material.Text(
           label,
@@ -284,7 +283,7 @@ class _QueryaToolbarButtonState extends material.State<QueryaToolbarButton> {
           ),
         ),
         if (shortcutHint != null) ...[
-          const Gap(6),
+          const material.SizedBox(width: 6),
           material.Container(
             padding: const material.EdgeInsets.symmetric(horizontal: 4, vertical: 1),
             decoration: material.BoxDecoration(

lib/shared/widgets/querya_search_field.dart

@@ -2,7 +2,6 @@ import 'dart:async';
 
 import 'package:flutter/material.dart' as material;
 import 'package:flutter/services.dart';
-import 'package:shadcn_flutter/shadcn_flutter.dart';
 import 'package:querya_desktop/core/theme/querya_theme_scope.dart';
 import 'package:querya_desktop/core/ui/querya_control_tokens.dart';
 
@@ -33,10 +32,10 @@ class QueryaSearchField extends material.StatefulWidget {
   final String placeholder;
 
   /// Callback fired after debounce duration when input text changes.
-  final ValueChanged<String>? onChanged;
+  final material.ValueChanged<String>? onChanged;
 
   /// Callback fired immediately upon Enter / submit.
-  final ValueChanged<String>? onSubmitted;
+  final material.ValueChanged<String>? onSubmitted;
 
   /// Debounce delay. Set to [Duration.zero] for immediate invocation.
   final Duration debounceDuration;
@@ -136,7 +135,7 @@ class _QueryaSearchFieldState extends material.State<QueryaSearchField> {
 
   @override
   material.Widget build(material.BuildContext context) {
-    final cs = Theme.of(context).colorScheme;
+    final cs = context.colors;
     final workbench = QueryaThemeScope.maybeOf(context)?.workbench;
     final controlSize = widget.size ?? QueryaControlSize.of(context);
     final fieldHeight = widget.height ?? controlSize.scaledHeight(context);
@@ -171,9 +170,9 @@ class _QueryaSearchFieldState extends material.State<QueryaSearchField> {
             ),
           ),
           material.Expanded(
-            child: CallbackShortcuts(
+            child: material.CallbackShortcuts(
               bindings: {
-                const SingleActivator(LogicalKeyboardKey.escape): () {
+                const material.SingleActivator(LogicalKeyboardKey.escape): () {
                   if (_hasText) {
                     _clear();
                   } else {

lib/shared/widgets/querya_tab_strip.dart

@@ -6,9 +6,9 @@ import 'package:querya_desktop/core/motion/querya_motion.dart';
 import 'package:querya_desktop/core/motion/querya_motion_context.dart';
 import 'package:querya_desktop/core/motion/querya_spring.dart';
 import 'package:querya_desktop/core/motion/querya_spring_controller.dart';
+import 'package:querya_desktop/core/theme/querya_theme_scope.dart';
 import 'package:querya_desktop/core/ui/querya_control_tokens.dart';
 import 'package:querya_desktop/core/ui/querya_tooltip.dart';
-import 'package:shadcn_flutter/shadcn_flutter.dart';
 
 /// A compact, keyboard-operable tab strip using Querya's motion and theme.
 ///
@@ -254,7 +254,7 @@ class QueryaTabStripState extends material.State<QueryaTabStrip>
 
   @override
   material.Widget build(material.BuildContext context) {
-    final colors = Theme.of(context).colorScheme;
+    final colors = context.colors;
     final controlSize = widget.size ??
         (widget.dense
             ? QueryaControlSize.sm
@@ -320,12 +320,22 @@ class QueryaTabStripState extends material.State<QueryaTabStrip>
                             children: [
                               // The tab's own node carries the label.
                               material.ExcludeSemantics(
-                                child: selected
-                                    ? Text(label).small().semiBold()
-                                    : Text(label).small().muted(),
+                                child: material.Text(
+                                  label,
+                                  style: material.TextStyle(
+                                    fontSize: 14,
+                                    height: 20 / 14,
+                                    fontWeight: selected
+                                        ? material.FontWeight.w600
+                                        : material.FontWeight.w400,
+                                    color: selected
+                                        ? colors.foreground
+                                        : colors.mutedForeground,
+                                  ),
+                                ),
                               ),
                               if (showClose) ...[
-                                const Gap(2),
+                                const material.SizedBox(width: 2),
                                 material.Tooltip(
                                   message: 'Close $label tab',
                                   waitDuration: kQueryaTooltipWait,
@@ -376,7 +386,7 @@ class QueryaTabStripState extends material.State<QueryaTabStrip>
           );
         }),
         if (widget.onAdd != null) ...[
-          const Gap(4),
+          const material.SizedBox(width: 4),
           material.MouseRegion(
             cursor: material.SystemMouseCursors.click,
             child: material.GestureDetector(
@@ -463,8 +473,8 @@ class _TabStripIndicator extends material.StatelessWidget {
 
   @override
   material.Widget build(material.BuildContext context) {
-    return ListenableBuilder(
-      listenable: Listenable.merge([left, width]),
+    return material.ListenableBuilder(
+      listenable: material.Listenable.merge([left, width]),
       builder: (context, __) {
         final w = width.value;
         if (w <= 0) return const material.SizedBox.shrink();

test/guards/shared_does_not_import_shadcn_test.dart

@@ -18,10 +18,7 @@ void main() {
     'lib/shared/widgets/querya_dialog_card.dart',
     'lib/shared/widgets/querya_dropdown.dart',
     'lib/shared/widgets/querya_empty_state.dart',
-    'lib/shared/widgets/querya_icon_button.dart',
     'lib/shared/widgets/querya_modal_dialog.dart',
-    'lib/shared/widgets/querya_search_field.dart',
-    'lib/shared/widgets/querya_tab_strip.dart',
     'lib/shared/widgets/widgets.dart',
   };