fix；设置和深浅色

lib/widgets/app_buttons.dart

@@ -24,23 +24,24 @@ class AppButton extends StatelessWidget {
 
   @override
   Widget build(BuildContext context) {
+    final colors = ShadTheme.of(context).colorScheme;
     final variant = switch (kind) {
       AppButtonKind.primary => ShadButtonVariant.primary,
       AppButtonKind.dark => ShadButtonVariant.primary,
       AppButtonKind.accent => ShadButtonVariant.secondary,
       AppButtonKind.ghost => ShadButtonVariant.outline,
     };
-    final colors = switch (kind) {
+    final palette = switch (kind) {
       AppButtonKind.primary => (null, null, null),
       AppButtonKind.dark => (
-        YantingColors.foreground,
-        YantingColors.background,
-        YantingColors.foreground.withValues(alpha: 0.9),
+        colors.foreground,
+        colors.background,
+        colors.foreground.withValues(alpha: 0.9),
       ),
       AppButtonKind.accent => (
-        YantingColors.brandSoft,
-        YantingColors.primaryForeground,
-        YantingColors.brandSoftBorder,
+        colors.brandSoft,
+        colors.primaryForeground,
+        colors.brandSoftBorder,
       ),
       AppButtonKind.ghost => (null, null, null),
     };
@@ -51,13 +52,13 @@ class AppButton extends StatelessWidget {
       width: expand ? double.infinity : null,
       height: compact ? 36 : 44,
       padding: EdgeInsets.symmetric(horizontal: compact ? 16 : 20),
-      backgroundColor: colors.$1,
-      foregroundColor: colors.$2,
-      hoverBackgroundColor: colors.$3,
+      backgroundColor: palette.$1,
+      foregroundColor: palette.$2,
+      hoverBackgroundColor: palette.$3,
       leading: icon == null ? null : Icon(icon, size: compact ? 15 : 16),
       gap: compact ? 5 : 7,
       textStyle: (compact ? YantingText.badge : YantingText.body).copyWith(
-        color: colors.$2,
+        color: palette.$2,
         fontWeight: FontWeight.w600,
       ),
       child: Text(label),
@@ -81,6 +82,7 @@ class AppIconButton extends StatelessWidget {
   @override
   Widget build(BuildContext context) {
     final iconWidget = Icon(icon, size: 16);
+    final colors = ShadTheme.of(context).colorScheme;
     return switch (kind) {
       AppButtonKind.primary => ShadIconButton(
         onPressed: onPressed,
@@ -88,16 +90,16 @@ class AppIconButton extends StatelessWidget {
       ),
       AppButtonKind.dark => ShadIconButton(
         onPressed: onPressed,
-        backgroundColor: YantingColors.foreground,
-        foregroundColor: YantingColors.background,
-        hoverBackgroundColor: YantingColors.foreground.withValues(alpha: 0.9),
+        backgroundColor: colors.foreground,
+        foregroundColor: colors.background,
+        hoverBackgroundColor: colors.foreground.withValues(alpha: 0.9),
         icon: iconWidget,
       ),
       AppButtonKind.accent => ShadIconButton.secondary(
         onPressed: onPressed,
-        backgroundColor: YantingColors.brandSoft,
-        foregroundColor: YantingColors.primaryForeground,
-        hoverBackgroundColor: YantingColors.brandSoftBorder,
+        backgroundColor: colors.brandSoft,
+        foregroundColor: colors.primaryForeground,
+        hoverBackgroundColor: colors.brandSoftBorder,
         icon: iconWidget,
       ),
       AppButtonKind.ghost => ShadIconButton.outline(