feat: add AED currency support and user node groups

user_data/user123_at_example_com.json

@@ -97,10 +97,94 @@
   "active_product_rentals": [],
   "resource_provider_rental_earnings": [],
   "node_rentals": [],
-  "node_groups": [],
+  "node_groups": [
+    {
+      "id": "compute",
+      "name": "Compute",
+      "description": "General compute workloads",
+      "node_ids": [],
+      "group_type": {
+        "Default": "compute"
+      },
+      "updated_at": "2025-09-08T18:44:31.238377407Z",
+      "created_at": "2025-09-08T18:44:31.238375624Z",
+      "group_config": {
+        "group_name": "Compute Nodes",
+        "max_nodes": 100,
+        "allocation_strategy": "balanced",
+        "auto_scaling": true,
+        "preferred_slice_formats": [
+          "1x1",
+          "2x2"
+        ],
+        "default_pricing": 50.0,
+        "resource_optimization": {
+          "cpu_optimization": 0.5,
+          "memory_optimization": 0.5,
+          "storage_optimization": 0.5,
+          "network_optimization": 0.5
+        }
+      }
+    },
+    {
+      "id": "storage",
+      "name": "Storage",
+      "description": "Storage and data workloads",
+      "node_ids": [],
+      "group_type": {
+        "Default": "storage"
+      },
+      "updated_at": "2025-09-08T18:44:31.238384425Z",
+      "created_at": "2025-09-08T18:44:31.238383997Z",
+      "group_config": {
+        "group_name": "Storage Nodes",
+        "max_nodes": 50,
+        "allocation_strategy": "storage_optimized",
+        "auto_scaling": false,
+        "preferred_slice_formats": [
+          "1x1"
+        ],
+        "default_pricing": 30.0,
+        "resource_optimization": {
+          "cpu_optimization": 0.3,
+          "memory_optimization": 0.3,
+          "storage_optimization": 0.8,
+          "network_optimization": 0.6
+        }
+      }
+    },
+    {
+      "id": "ai-gpu",
+      "name": "AI/GPU",
+      "description": "AI and GPU-intensive workloads",
+      "node_ids": [],
+      "group_type": {
+        "Default": "ai-gpu"
+      },
+      "updated_at": "2025-09-08T18:44:31.238388576Z",
+      "created_at": "2025-09-08T18:44:31.238388156Z",
+      "group_config": {
+        "group_name": "AI/GPU Nodes",
+        "max_nodes": 20,
+        "allocation_strategy": "gpu_optimized",
+        "auto_scaling": true,
+        "preferred_slice_formats": [
+          "4x4",
+          "8x8"
+        ],
+        "default_pricing": 200.0,
+        "resource_optimization": {
+          "cpu_optimization": 0.8,
+          "memory_optimization": 0.7,
+          "storage_optimization": 0.4,
+          "network_optimization": 0.5
+        }
+      }
+    }
+  ],
   "slice_rentals": [],
   "slice_assignments": [],
-  "display_currency": "USD",
+  "display_currency": "AED",
   "quick_topup_amounts": [
     10.0,
     25.0,