test: add widget tests for FrontHallPage

- Add 14 widget tests covering:
  - Welcome message and Quick Links panel display
  - System Stats and Environment sections
  - Loading and error states
  - API endpoint verification
  - Default links fallback behavior
  - Category headers display

- Fix fixtures:
  - Add SystemStats fixture for dashboard content
  - Remove duplicate quickLinks definition
  - Update quickLinks endpoint to /dashboard/quick-links

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

test/harness/fixtures.dart

@@ -202,36 +202,6 @@ class Fixtures {
   static Map<String, dynamic> group(int index) =>
       Map<String, dynamic>.from(groups[index]);
 
-  // ============================================================
-  // Quick Links
-  // ============================================================
-
-  static const quickLinks = [
-    {
-      'id': 1,
-      'title': 'Portainer',
-      'url': 'https://portainer.schweitz.net',
-      'icon': 'dns',
-      'category': 'Infrastructure',
-      'position': 0,
-      'is_visible': true,
-      'link_type': 'iframe',
-    },
-    {
-      'id': 2,
-      'title': 'Gitea',
-      'url': 'https://git.schweitz.net',
-      'icon': 'code',
-      'category': 'Development',
-      'position': 1,
-      'is_visible': true,
-      'link_type': 'new_tab',
-    },
-  ];
-
-  static Map<String, dynamic> quickLink(int index) =>
-      Map<String, dynamic>.from(quickLinks[index]);
-
   // ============================================================
   // Auth Sync Response
   // ============================================================
@@ -269,15 +239,83 @@ class Fixtures {
   }
 
   // ============================================================
-  // System Stats
+  // System Stats (for DashboardContent)
   // ============================================================
 
   static const systemStats = {
-    'cpu_percent': 23.5,
-    'memory_percent': 45.2,
-    'disk_percent': 67.8,
-    'uptime_seconds': 864000,
-    'container_count': 12,
-    'container_running': 10,
+    'cpu': {
+      'usage_percent': 23.5,
+      'cores': 8,
+      'load_1m': 1.2,
+      'load_5m': 1.5,
+      'load_15m': 1.3,
+    },
+    'memory': {
+      'usage_percent': 45.2,
+      'total_bytes': 17179869184,
+      'used_bytes': 7771729306,
+      'available_bytes': 9408139878,
+    },
+    'disks': [
+      {
+        'mount_point': '/',
+        'device': '/dev/sda1',
+        'fstype': 'ext4',
+        'usage_percent': 67.8,
+        'total_bytes': 500000000000,
+        'used_bytes': 339000000000,
+        'free_bytes': 161000000000,
+      },
+    ],
+    'network': {
+      'bytes_sent': 1234567890,
+      'bytes_recv': 9876543210,
+      'bytes_total': 11111111100,
+    },
+    'gpu': {
+      'available': false,
+    },
+    'hostname': 'test-server',
+    'queried_at': '2024-01-15T10:30:00Z',
   };
+
+  // ============================================================
+  // Quick Links
+  // ============================================================
+
+  static const quickLinks = [
+    {
+      'id': 1,
+      'title': 'Portainer',
+      'url': 'https://portainer.example.com',
+      'icon': 'dns',
+      'category': 'Infrastructure',
+      'position': 0,
+      'is_visible': true,
+      'link_type': 'iframe',
+    },
+    {
+      'id': 2,
+      'title': 'Gitea',
+      'url': 'https://git.example.com',
+      'icon': 'code',
+      'category': 'Development',
+      'position': 1,
+      'is_visible': true,
+      'link_type': 'new_tab',
+    },
+    {
+      'id': 3,
+      'title': 'Jellyfin',
+      'url': 'https://media.example.com',
+      'icon': 'movie',
+      'category': 'Home',
+      'position': 2,
+      'is_visible': true,
+      'link_type': 'iframe',
+    },
+  ];
+
+  static Map<String, dynamic> quickLink(int index) =>
+      Map<String, dynamic>.from(quickLinks[index]);
 }

test/harness/test_harness.dart

@@ -164,7 +164,7 @@ class TestHarness {
 
   /// Set up mock quick links response.
   void givenQuickLinks([List<Map<String, dynamic>>? links]) {
-    api.whenGet('/quick-links', links ?? Fixtures.quickLinks);
+    api.whenGet('/dashboard/quick-links', links ?? Fixtures.quickLinks);
   }
 
   /// Set up mock system stats response.