refactor(useragent): moved shared CreamPanel and StatePanel into generic widgets

useragent/lib/providers/evm/evm_grants.dart

@@ -1,11 +1,9 @@
 import 'package:arbiter/features/connection/evm/grants.dart';
 import 'package:arbiter/proto/evm.pb.dart';
 import 'package:arbiter/providers/connection/connection_manager.dart';
-import 'package:fixnum/fixnum.dart';
 import 'package:freezed_annotation/freezed_annotation.dart';
 import 'package:hooks_riverpod/experimental/mutation.dart';
 import 'package:mtcore/markettakers.dart';
-import 'package:protobuf/well_known_types/google/protobuf/timestamp.pb.dart';
 import 'package:riverpod_annotation/riverpod_annotation.dart';
 
 part 'evm_grants.freezed.dart';

useragent/lib/screens/callouts/sdk_connect.dart

@@ -1,5 +1,6 @@
 import 'package:arbiter/proto/client.pb.dart';
 import 'package:arbiter/theme/palette.dart';
+import 'package:arbiter/widgets/cream_frame.dart';
 import 'package:flutter/material.dart';
 import 'package:sizer/sizer.dart';
 
@@ -31,12 +32,7 @@ class SdkConnectCallout extends StatelessWidget {
         clientInfo.hasVersion() && clientInfo.version.isNotEmpty;
     final showInfoCard = hasDescription || hasVersion;
 
-    return Container(
+    return CreamFrame(
-      decoration: BoxDecoration(
-        color: Palette.cream,
-        borderRadius: BorderRadius.circular(24),
-        border: Border.all(color: Palette.line),
-      ),
       padding: EdgeInsets.all(2.4.h),
       child: Column(
         mainAxisSize: MainAxisSize.min,

useragent/lib/screens/dashboard/clients/details/widgets/client_details_state_panel.dart

@@ -1,4 +1,5 @@
 import 'package:arbiter/theme/palette.dart';
+import 'package:arbiter/widgets/cream_frame.dart';
 import 'package:flutter/material.dart';
 
 class ClientDetailsStatePanel extends StatelessWidget {
@@ -17,15 +18,8 @@ class ClientDetailsStatePanel extends StatelessWidget {
   Widget build(BuildContext context) {
     final theme = Theme.of(context);
     return Center(
-      child: Padding(
+      child: CreamFrame(
-        padding: const EdgeInsets.all(24),
+        margin: const EdgeInsets.all(24),
-        child: DecoratedBox(
-          decoration: BoxDecoration(
-            color: Palette.cream,
-            borderRadius: BorderRadius.circular(24),
-            border: Border.all(color: Palette.line),
-          ),
-          child: Padding(
         padding: const EdgeInsets.all(24),
         child: Column(
           mainAxisSize: MainAxisSize.min,
@@ -38,8 +32,6 @@ class ClientDetailsStatePanel extends StatelessWidget {
           ],
         ),
       ),
-        ),
-      ),
     );
   }
 }

useragent/lib/screens/dashboard/clients/details/widgets/client_summary_card.dart

@@ -1,5 +1,5 @@
 import 'package:arbiter/proto/user_agent.pb.dart';
-import 'package:arbiter/theme/palette.dart';
+import 'package:arbiter/widgets/cream_frame.dart';
 import 'package:flutter/material.dart';
 
 class ClientSummaryCard extends StatelessWidget {
@@ -9,13 +9,7 @@ class ClientSummaryCard extends StatelessWidget {
 
   @override
   Widget build(BuildContext context) {
-    return DecoratedBox(
+    return CreamFrame(
-      decoration: BoxDecoration(
-        color: Palette.cream,
-        borderRadius: BorderRadius.circular(24),
-        border: Border.all(color: Palette.line),
-      ),
-      child: Padding(
       padding: const EdgeInsets.all(20),
       child: Column(
           crossAxisAlignment: CrossAxisAlignment.start,
@@ -42,7 +36,6 @@ class ClientSummaryCard extends StatelessWidget {
             ),
           ],
         ),
-      ),
     );
   }
 }

useragent/lib/screens/dashboard/clients/details/widgets/wallet_access_save_bar.dart

@@ -1,5 +1,6 @@
 import 'package:arbiter/providers/sdk_clients/wallet_access.dart';
 import 'package:arbiter/theme/palette.dart';
+import 'package:arbiter/widgets/cream_frame.dart';
 import 'package:flutter/material.dart';
 import 'package:hooks_riverpod/experimental/mutation.dart';
 
@@ -24,13 +25,7 @@ class WalletAccessSaveBar extends StatelessWidget {
       MutationError(:final error) => error.toString(),
       _ => null,
     };
-    return DecoratedBox(
+    return CreamFrame(
-      decoration: BoxDecoration(
-        color: Palette.cream,
-        borderRadius: BorderRadius.circular(24),
-        border: Border.all(color: Palette.line),
-      ),
-      child: Padding(
       padding: const EdgeInsets.all(16),
       child: Column(
           crossAxisAlignment: CrossAxisAlignment.start,
@@ -54,7 +49,6 @@ class WalletAccessSaveBar extends StatelessWidget {
             ),
           ],
         ),
-      ),
     );
   }
 }

useragent/lib/screens/dashboard/clients/details/widgets/wallet_access_section.dart

@@ -2,7 +2,7 @@ import 'package:arbiter/providers/sdk_clients/wallet_access.dart';
 import 'package:arbiter/screens/dashboard/clients/details/widgets/client_details_state_panel.dart';
 import 'package:arbiter/screens/dashboard/clients/details/widgets/wallet_access_list.dart';
 import 'package:arbiter/screens/dashboard/clients/details/widgets/wallet_access_search_field.dart';
-import 'package:arbiter/theme/palette.dart';
+import 'package:arbiter/widgets/cream_frame.dart';
 import 'package:flutter/material.dart';
 import 'package:hooks_riverpod/hooks_riverpod.dart';
 
@@ -27,13 +27,7 @@ class WalletAccessSection extends ConsumerWidget {
   @override
   Widget build(BuildContext context, WidgetRef ref) {
     final optionsAsync = ref.watch(clientWalletOptionsProvider);
-    return DecoratedBox(
+    return CreamFrame(
-      decoration: BoxDecoration(
-        color: Palette.cream,
-        borderRadius: BorderRadius.circular(24),
-        border: Border.all(color: Palette.line),
-      ),
-      child: Padding(
       padding: const EdgeInsets.all(20),
       child: Column(
           crossAxisAlignment: CrossAxisAlignment.start,
@@ -56,7 +50,6 @@ class WalletAccessSection extends ConsumerWidget {
             ),
           ],
         ),
-      ),
     );
   }
 }

useragent/lib/screens/dashboard/clients/table.dart

@@ -10,6 +10,8 @@ import 'package:flutter/services.dart';
 import 'package:flutter_hooks/flutter_hooks.dart';
 import 'package:hooks_riverpod/hooks_riverpod.dart';
 import 'package:arbiter/theme/palette.dart';
+import 'package:arbiter/widgets/cream_frame.dart';
+import 'package:arbiter/widgets/state_panel.dart';
 import 'package:sizer/sizer.dart';
 
 // ─── Column width getters ─────────────────────────────────────────────────────
@@ -59,79 +61,6 @@ String _formatError(Object error) {
   return message;
 }
 
-// ─── State panel ─────────────────────────────────────────────────────────────
-
-class _StatePanel extends StatelessWidget {
-  const _StatePanel({
-    required this.icon,
-    required this.title,
-    required this.body,
-    this.actionLabel,
-    this.onAction,
-    this.busy = false,
-  });
-
-  final IconData icon;
-  final String title;
-  final String body;
-  final String? actionLabel;
-  final Future<void> Function()? onAction;
-  final bool busy;
-
-  @override
-  Widget build(BuildContext context) {
-    final theme = Theme.of(context);
-
-    return Container(
-      decoration: BoxDecoration(
-        borderRadius: BorderRadius.circular(24),
-        color: Palette.cream.withValues(alpha: 0.92),
-        border: Border.all(color: Palette.line),
-      ),
-      child: Padding(
-        padding: EdgeInsets.all(2.8.h),
-        child: Column(
-          crossAxisAlignment: CrossAxisAlignment.start,
-          children: [
-            if (busy)
-              SizedBox(
-                width: 2.8.h,
-                height: 2.8.h,
-                child: const CircularProgressIndicator(strokeWidth: 2.5),
-              )
-            else
-              Icon(icon, size: 34, color: Palette.coral),
-            SizedBox(height: 1.8.h),
-            Text(
-              title,
-              style: theme.textTheme.headlineSmall?.copyWith(
-                color: Palette.ink,
-                fontWeight: FontWeight.w800,
-              ),
-            ),
-            SizedBox(height: 1.h),
-            Text(
-              body,
-              style: theme.textTheme.bodyLarge?.copyWith(
-                color: Palette.ink.withValues(alpha: 0.72),
-                height: 1.5,
-              ),
-            ),
-            if (actionLabel != null && onAction != null) ...[
-              SizedBox(height: 2.h),
-              OutlinedButton.icon(
-                onPressed: () => onAction!(),
-                icon: const Icon(Icons.refresh),
-                label: Text(actionLabel!),
-              ),
-            ],
-          ],
-        ),
-      ),
-    );
-  }
-}
-
 // ─── Header ───────────────────────────────────────────────────────────────────
 
 class _Header extends StatelessWidget {
@@ -443,13 +372,7 @@ class _ClientTable extends StatelessWidget {
   Widget build(BuildContext context) {
     final theme = Theme.of(context);
 
-    return Container(
+    return CreamFrame(
-      decoration: BoxDecoration(
-        borderRadius: BorderRadius.circular(24),
-        color: Palette.cream.withValues(alpha: 0.92),
-        border: Border.all(color: Palette.line),
-      ),
-      child: Padding(
       padding: EdgeInsets.all(2.h),
       child: LayoutBuilder(
         builder: (context, constraints) {
@@ -497,7 +420,6 @@ class _ClientTable extends StatelessWidget {
             );
           },
         ),
-      ),
     );
   }
 }
@@ -533,27 +455,27 @@ class ClientsScreen extends HookConsumerWidget {
     final clients = clientsAsync.asData?.value;
 
     final content = switch (clientsAsync) {
-      AsyncLoading() when clients == null => const _StatePanel(
+      AsyncLoading() when clients == null => const StatePanel(
         icon: Icons.hourglass_top,
         title: 'Loading clients',
         body: 'Pulling client registry from Arbiter.',
         busy: true,
       ),
-      AsyncError(:final error) => _StatePanel(
+      AsyncError(:final error) => StatePanel(
         icon: Icons.sync_problem,
         title: 'Client registry unavailable',
         body: _formatError(error),
         actionLabel: 'Retry',
         onAction: refresh,
       ),
-      _ when !isConnected => _StatePanel(
+      _ when !isConnected => StatePanel(
         icon: Icons.portable_wifi_off,
         title: 'No active server connection',
         body: 'Reconnect to Arbiter to list SDK clients.',
         actionLabel: 'Refresh',
         onAction: refresh,
       ),
-      _ when clients != null && clients.isEmpty => _StatePanel(
+      _ when clients != null && clients.isEmpty => StatePanel(
         icon: Icons.devices_other_outlined,
         title: 'No clients yet',
         body: 'SDK clients appear here once they register with Arbiter.',

useragent/lib/screens/dashboard/evm/evm.dart

@@ -4,6 +4,7 @@ import 'package:arbiter/screens/dashboard/evm/wallets/table.dart';
 import 'package:arbiter/theme/palette.dart';
 import 'package:arbiter/providers/evm/evm.dart';
 import 'package:arbiter/widgets/page_header.dart';
+import 'package:arbiter/widgets/state_panel.dart';
 import 'package:auto_route/auto_route.dart';
 import 'package:flutter/material.dart';
 import 'package:hooks_riverpod/hooks_riverpod.dart';
@@ -36,20 +37,20 @@ class EvmScreen extends HookConsumerWidget {
     }
 
     final content = switch (evm) {
-      AsyncLoading() when wallets == null => const _StatePanel(
+      AsyncLoading() when wallets == null => const StatePanel(
         icon: Icons.hourglass_top,
         title: 'Loading wallets',
         body: 'Pulling wallet registry from Arbiter.',
         busy: true,
       ),
-      AsyncError(:final error) => _StatePanel(
+      AsyncError(:final error) => StatePanel(
         icon: Icons.sync_problem,
         title: 'Wallet registry unavailable',
         body: _formatError(error),
         actionLabel: 'Retry',
         onAction: refreshWallets,
       ),
-      AsyncData(:final value) when value == null => _StatePanel(
+      AsyncData(:final value) when value == null => StatePanel(
         icon: Icons.portable_wifi_off,
         title: 'No active server connection',
         body: 'Reconnect to Arbiter to list or create EVM wallets.',
@@ -90,77 +91,6 @@ class EvmScreen extends HookConsumerWidget {
   }
 }
 
-class _StatePanel extends StatelessWidget {
-  const _StatePanel({
-    required this.icon,
-    required this.title,
-    required this.body,
-    this.actionLabel,
-    this.onAction,
-    this.busy = false,
-  });
-
-  final IconData icon;
-  final String title;
-  final String body;
-  final String? actionLabel;
-  final Future<void> Function()? onAction;
-  final bool busy;
-
-  @override
-  Widget build(BuildContext context) {
-    final theme = Theme.of(context);
-
-    return Container(
-      decoration: BoxDecoration(
-        borderRadius: BorderRadius.circular(24),
-        color: Palette.cream.withValues(alpha: 0.92),
-        border: Border.all(color: Palette.line),
-      ),
-      child: Padding(
-        padding: EdgeInsets.all(2.8.h),
-        child: Column(
-          crossAxisAlignment: CrossAxisAlignment.start,
-          children: [
-            if (busy)
-              SizedBox(
-                width: 2.8.h,
-                height: 2.8.h,
-                child: CircularProgressIndicator(strokeWidth: 2.5),
-              )
-            else
-              Icon(icon, size: 34, color: Palette.coral),
-            SizedBox(height: 1.8.h),
-            Text(
-              title,
-              style: theme.textTheme.headlineSmall?.copyWith(
-                color: Palette.ink,
-                fontWeight: FontWeight.w800,
-              ),
-            ),
-            SizedBox(height: 1.h),
-            Text(
-              body,
-              style: theme.textTheme.bodyLarge?.copyWith(
-                color: Palette.ink.withValues(alpha: 0.72),
-                height: 1.5,
-              ),
-            ),
-            if (actionLabel != null && onAction != null) ...[
-              SizedBox(height: 2.h),
-              OutlinedButton.icon(
-                onPressed: () => onAction!(),
-                icon: const Icon(Icons.refresh),
-                label: Text(actionLabel!),
-              ),
-            ],
-          ],
-        ),
-      ),
-    );
-  }
-}
-
 String _formatError(Object error) {
   final message = error.toString();
   if (message.startsWith('Exception: ')) {

useragent/lib/screens/dashboard/evm/grants/grants.dart

@@ -5,6 +5,7 @@ import 'package:arbiter/router.gr.dart';
 import 'package:arbiter/screens/dashboard/evm/grants/widgets/grant_card.dart';
 import 'package:arbiter/theme/palette.dart';
 import 'package:arbiter/widgets/page_header.dart';
+import 'package:arbiter/widgets/state_panel.dart';
 import 'package:auto_route/auto_route.dart';
 import 'package:flutter/material.dart';
 import 'package:hooks_riverpod/hooks_riverpod.dart';
@@ -18,79 +19,6 @@ String _formatError(Object error) {
   return message;
 }
 
-// ─── State panel ──────────────────────────────────────────────────────────────
-
-class _StatePanel extends StatelessWidget {
-  const _StatePanel({
-    required this.icon,
-    required this.title,
-    required this.body,
-    this.actionLabel,
-    this.onAction,
-    this.busy = false,
-  });
-
-  final IconData icon;
-  final String title;
-  final String body;
-  final String? actionLabel;
-  final Future<void> Function()? onAction;
-  final bool busy;
-
-  @override
-  Widget build(BuildContext context) {
-    final theme = Theme.of(context);
-
-    return Container(
-      decoration: BoxDecoration(
-        borderRadius: BorderRadius.circular(24),
-        color: Palette.cream.withValues(alpha: 0.92),
-        border: Border.all(color: Palette.line),
-      ),
-      child: Padding(
-        padding: EdgeInsets.all(2.8.h),
-        child: Column(
-          crossAxisAlignment: CrossAxisAlignment.start,
-          children: [
-            if (busy)
-              SizedBox(
-                width: 2.8.h,
-                height: 2.8.h,
-                child: const CircularProgressIndicator(strokeWidth: 2.5),
-              )
-            else
-              Icon(icon, size: 34, color: Palette.coral),
-            SizedBox(height: 1.8.h),
-            Text(
-              title,
-              style: theme.textTheme.headlineSmall?.copyWith(
-                color: Palette.ink,
-                fontWeight: FontWeight.w800,
-              ),
-            ),
-            SizedBox(height: 1.h),
-            Text(
-              body,
-              style: theme.textTheme.bodyLarge?.copyWith(
-                color: Palette.ink.withValues(alpha: 0.72),
-                height: 1.5,
-              ),
-            ),
-            if (actionLabel != null && onAction != null) ...[
-              SizedBox(height: 2.h),
-              OutlinedButton.icon(
-                onPressed: () => onAction!(),
-                icon: const Icon(Icons.refresh),
-                label: Text(actionLabel!),
-              ),
-            ],
-          ],
-        ),
-      ),
-    );
-  }
-}
-
 // ─── Grant list ───────────────────────────────────────────────────────────────
 
 class _GrantList extends StatelessWidget {
@@ -149,27 +77,27 @@ class EvmGrantsScreen extends ConsumerWidget {
     final grants = grantsState?.grants;
 
     final content = switch (grantsAsync) {
-      AsyncLoading() when grantsState == null => const _StatePanel(
+      AsyncLoading() when grantsState == null => const StatePanel(
         icon: Icons.hourglass_top,
         title: 'Loading grants',
         body: 'Pulling grant registry from Arbiter.',
         busy: true,
       ),
-      AsyncError(:final error) => _StatePanel(
+      AsyncError(:final error) => StatePanel(
         icon: Icons.sync_problem,
         title: 'Grant registry unavailable',
         body: _formatError(error),
         actionLabel: 'Retry',
         onAction: safeRefresh,
       ),
-      AsyncData(:final value) when value == null => _StatePanel(
+      AsyncData(:final value) when value == null => StatePanel(
         icon: Icons.portable_wifi_off,
         title: 'No active server connection',
         body: 'Reconnect to Arbiter to list EVM grants.',
         actionLabel: 'Refresh',
         onAction: safeRefresh,
       ),
-      _ when grants != null && grants.isEmpty => _StatePanel(
+      _ when grants != null && grants.isEmpty => StatePanel(
         icon: Icons.policy_outlined,
         title: 'No grants yet',
         body: 'Create a grant to allow SDK clients to sign transactions.',

useragent/lib/screens/dashboard/evm/wallets/table.dart

@@ -1,6 +1,7 @@
 import 'dart:math' as math;
 import 'package:arbiter/proto/evm.pb.dart';
 import 'package:arbiter/theme/palette.dart';
+import 'package:arbiter/widgets/cream_frame.dart';
 import 'package:flutter/material.dart';
 import 'package:sizer/sizer.dart';
 
@@ -32,13 +33,7 @@ class WalletTable extends StatelessWidget {
   Widget build(BuildContext context) {
     final theme = Theme.of(context);
 
-    return Container(
+    return CreamFrame(
-      decoration: BoxDecoration(
-        borderRadius: BorderRadius.circular(24),
-        color: Palette.cream.withValues(alpha: 0.92),
-        border: Border.all(color: Palette.line),
-      ),
-      child: Padding(
       padding: EdgeInsets.all(2.h),
       child: LayoutBuilder(
           builder: (context, constraints) {
@@ -89,7 +84,6 @@ class WalletTable extends StatelessWidget {
             );
           },
         ),
-      ),
     );
   }
 }

useragent/lib/widgets/cream_frame.dart

@@ -0,0 +1,32 @@
+import 'package:arbiter/theme/palette.dart';
+import 'package:flutter/material.dart';
+
+/// A card-shaped frame with the cream background, rounded corners, and a
+/// subtle border. Use [padding] for interior spacing and [margin] for exterior
+/// spacing.
+class CreamFrame extends StatelessWidget {
+  const CreamFrame({
+    super.key,
+    required this.child,
+    this.padding = EdgeInsets.zero,
+    this.margin,
+  });
+
+  final Widget child;
+  final EdgeInsetsGeometry padding;
+  final EdgeInsetsGeometry? margin;
+
+  @override
+  Widget build(BuildContext context) {
+    return Container(
+      margin: margin,
+      padding: padding,
+      decoration: BoxDecoration(
+        borderRadius: BorderRadius.circular(24),
+        color: Palette.cream,
+        border: Border.all(color: Palette.line),
+      ),
+      child: child,
+    );
+  }
+}

useragent/lib/widgets/state_panel.dart

@@ -0,0 +1,69 @@
+import 'package:arbiter/widgets/cream_frame.dart';
+import 'package:arbiter/theme/palette.dart';
+import 'package:flutter/material.dart';
+import 'package:sizer/sizer.dart';
+
+class StatePanel extends StatelessWidget {
+  const StatePanel({
+    super.key,
+    required this.icon,
+    required this.title,
+    required this.body,
+    this.actionLabel,
+    this.onAction,
+    this.busy = false,
+  });
+
+  final IconData icon;
+  final String title;
+  final String body;
+  final String? actionLabel;
+  final Future<void> Function()? onAction;
+  final bool busy;
+
+  @override
+  Widget build(BuildContext context) {
+    final theme = Theme.of(context);
+
+    return CreamFrame(
+      padding: EdgeInsets.all(2.8.h),
+      child: Column(
+          crossAxisAlignment: CrossAxisAlignment.start,
+          children: [
+            if (busy)
+              SizedBox(
+                width: 2.8.h,
+                height: 2.8.h,
+                child: const CircularProgressIndicator(strokeWidth: 2.5),
+              )
+            else
+              Icon(icon, size: 34, color: Palette.coral),
+            SizedBox(height: 1.8.h),
+            Text(
+              title,
+              style: theme.textTheme.headlineSmall?.copyWith(
+                color: Palette.ink,
+                fontWeight: FontWeight.w800,
+              ),
+            ),
+            SizedBox(height: 1.h),
+            Text(
+              body,
+              style: theme.textTheme.bodyLarge?.copyWith(
+                color: Palette.ink.withValues(alpha: 0.72),
+                height: 1.5,
+              ),
+            ),
+            if (actionLabel != null && onAction != null) ...[
+              SizedBox(height: 2.h),
+              OutlinedButton.icon(
+                onPressed: () => onAction!(),
+                icon: const Icon(Icons.refresh),
+                label: Text(actionLabel!),
+              ),
+            ],
+          ],
+        ),
+    );
+  }
+}