refactor(extensions): share the extension health color and icon helpers

The detail page and the list page carried identical color mappings. Only
color and icon move; each screen keeps its own label mapping.

lib/screens/settings/extension_detail_page.dart

@@ -1,8 +1,7 @@
 import 'dart:io';
 
 import 'package:flutter/material.dart';
-import 'package:flutter/cupertino.dart'
-    show CupertinoColors, CupertinoIcons, CupertinoTextField;
+import 'package:flutter/cupertino.dart' show CupertinoIcons, CupertinoTextField;
 import 'package:spotiflac_android/theme/mornye_theme.dart';
 import 'package:spotiflac_android/theme/mornye_icons.dart';
 import 'package:spotiflac_android/widgets/app_alert_dialog.dart';
@@ -23,6 +22,7 @@ import 'package:spotiflac_android/widgets/app_icon.dart';
 import 'package:spotiflac_android/widgets/app_icon_button.dart';
 import 'package:spotiflac_android/widgets/app_loading_indicator.dart';
 import 'package:spotiflac_android/widgets/app_sliver_header.dart';
+import 'package:spotiflac_android/widgets/extension_health.dart';
 
 part 'extension_detail_page_widgets.dart';
 

lib/screens/settings/extension_detail_page_widgets.dart

@@ -186,43 +186,6 @@ class _CapabilityItem extends StatelessWidget {
   }
 }
 
-Color _healthStatusColor(BuildContext context, String status) {
-  final colorScheme = Theme.of(context).colorScheme;
-  switch (status) {
-    case 'online':
-      return context.isMornye
-          ? CupertinoColors.systemGreen.resolveFrom(context)
-          : colorScheme.primary;
-    case 'degraded':
-      return colorScheme.tertiary;
-    case 'offline':
-      return colorScheme.error;
-    default:
-      return colorScheme.onSurfaceVariant;
-  }
-}
-
-IconData _healthStatusIcon(BuildContext context, String status) {
-  if (context.isMornye) {
-    return switch (status) {
-      'online' => CupertinoIcons.check_mark_circled_solid,
-      'degraded' => CupertinoIcons.exclamationmark_triangle,
-      'offline' => CupertinoIcons.exclamationmark_circle,
-      _ => CupertinoIcons.question_circle,
-    };
-  }
-  switch (status) {
-    case 'online':
-      return Icons.check_circle;
-    case 'degraded':
-      return Icons.warning_amber_rounded;
-    case 'offline':
-      return Icons.error_outline;
-    default:
-      return Icons.help_outline;
-  }
-}
-
 String _healthStatusLabel(BuildContext context, String status) {
   switch (status) {
     case 'online':
@@ -253,7 +216,7 @@ class _HealthSummaryItem extends StatelessWidget {
   Widget build(BuildContext context) {
     final colorScheme = Theme.of(context).colorScheme;
     final statusValue = status?.status ?? 'unknown';
-    final color = _healthStatusColor(context, statusValue);
+    final color = extensionHealthColor(context, statusValue);
 
     return Column(
       mainAxisSize: MainAxisSize.min,
@@ -262,7 +225,7 @@ class _HealthSummaryItem extends StatelessWidget {
           padding: const EdgeInsets.symmetric(horizontal: 16, vertical: 12),
           child: Row(
             children: [
-              AppIcon(_healthStatusIcon(context, statusValue), color: color),
+              AppIcon(extensionHealthIcon(context, statusValue), color: color),
               const SizedBox(width: 16),
               Expanded(
                 child: Column(
@@ -324,7 +287,7 @@ class _HealthCheckItem extends StatelessWidget {
   @override
   Widget build(BuildContext context) {
     final colorScheme = Theme.of(context).colorScheme;
-    final color = _healthStatusColor(context, check.status);
+    final color = extensionHealthColor(context, check.status);
     final detailParts = <String>[
       _healthStatusLabel(context, check.status),
       if (check.httpStatus != null) 'HTTP ${check.httpStatus}',
@@ -347,7 +310,7 @@ class _HealthCheckItem extends StatelessWidget {
           child: Row(
             crossAxisAlignment: CrossAxisAlignment.start,
             children: [
-              AppIcon(_healthStatusIcon(context, check.status), color: color),
+              AppIcon(extensionHealthIcon(context, check.status), color: color),
               const SizedBox(width: 16),
               Expanded(
                 child: Column(

lib/screens/settings/extensions_page.dart

@@ -1,6 +1,5 @@
 import 'dart:io';
 import 'package:flutter/material.dart';
-import 'package:flutter/cupertino.dart' show CupertinoColors;
 import 'package:spotiflac_android/widgets/app_snack_bar.dart';
 import 'package:spotiflac_android/widgets/app_switch.dart';
 import 'package:spotiflac_android/widgets/extension_row.dart';
@@ -25,6 +24,7 @@ import 'package:spotiflac_android/widgets/mornye_chrome.dart';
 import 'package:spotiflac_android/widgets/settings_group.dart';
 import 'package:spotiflac_android/widgets/home_feed_region_setting.dart';
 import 'package:spotiflac_android/widgets/app_sliver_header.dart';
+import 'package:spotiflac_android/widgets/extension_health.dart';
 
 part 'extensions_page_widgets.dart';
 

lib/screens/settings/extensions_page_widgets.dart

@@ -24,7 +24,7 @@ class _ExtensionItem extends StatelessWidget {
         : null;
     final serviceHealthColor = serviceHealthStatus == null
         ? null
-        : _extensionHealthColor(context, serviceHealthStatus);
+        : extensionHealthColor(context, serviceHealthStatus);
 
     return ExtensionRow(
       showDivider: showDivider,
@@ -75,22 +75,6 @@ class _ExtensionItem extends StatelessWidget {
   }
 }
 
-Color _extensionHealthColor(BuildContext context, String status) {
-  final colorScheme = Theme.of(context).colorScheme;
-  switch (status) {
-    case 'online':
-      return context.isMornye
-          ? CupertinoColors.systemGreen.resolveFrom(context)
-          : colorScheme.primary;
-    case 'degraded':
-      return colorScheme.tertiary;
-    case 'offline':
-      return colorScheme.error;
-    default:
-      return colorScheme.onSurfaceVariant;
-  }
-}
-
 String _extensionHealthLabel(BuildContext context, String status) {
   switch (status) {
     case 'online':

lib/widgets/extension_health.dart

@@ -0,0 +1,40 @@
+import 'package:flutter/cupertino.dart';
+import 'package:flutter/material.dart';
+import 'package:spotiflac_android/theme/mornye_theme.dart';
+
+Color extensionHealthColor(BuildContext context, String status) {
+  final colorScheme = Theme.of(context).colorScheme;
+  switch (status) {
+    case 'online':
+      return context.isMornye
+          ? CupertinoColors.systemGreen.resolveFrom(context)
+          : colorScheme.primary;
+    case 'degraded':
+      return colorScheme.tertiary;
+    case 'offline':
+      return colorScheme.error;
+    default:
+      return colorScheme.onSurfaceVariant;
+  }
+}
+
+IconData extensionHealthIcon(BuildContext context, String status) {
+  if (context.isMornye) {
+    return switch (status) {
+      'online' => CupertinoIcons.check_mark_circled_solid,
+      'degraded' => CupertinoIcons.exclamationmark_triangle,
+      'offline' => CupertinoIcons.exclamationmark_circle,
+      _ => CupertinoIcons.question_circle,
+    };
+  }
+  switch (status) {
+    case 'online':
+      return Icons.check_circle;
+    case 'degraded':
+      return Icons.warning_amber_rounded;
+    case 'offline':
+      return Icons.error_outline;
+    default:
+      return Icons.help_outline;
+  }
+}