Add portalFqdn to v2025_08_01_preview

Signed-off-by: Nont <[email protected]>

Author: Nont

specification/containerservice/Fleet.Management/examples/2025-08-01-preview/FleetManagedNamespaces_Get.json

@@ -88,7 +88,8 @@
           },
           "status": {
             "lastOperationError": {}
-          }
+          },
+          "portalFqdn": "fleet1-namespace1-abc123.flt.eastus.azmk8s.io"
         },
         "eTag": "\"EtagValue\"",
         "tags": {

specification/containerservice/Fleet.Management/examples/2025-08-01-preview/FleetManagedNamespaces_ListByFleet.json

@@ -90,7 +90,8 @@
               },
               "status": {
                 "lastOperationError": {}
-              }
+              },
+              "portalFqdn": "fleet1-namespace1-abc123.flt.eastus.azmk8s.io"
             },
             "eTag": "\"EtagValue\"",
             "tags": {

specification/containerservice/Fleet.Management/fleetnamespace.tsp

@@ -55,6 +55,10 @@ model FleetManagedNamespaceProperties {
   @visibility(Lifecycle.Read)
   @doc("Status information of the last operation for fleet managed namespace.")
   status?: FleetManagedNamespaceStatus;
+
+  @visibility(Lifecycle.Read)
+  @doc("The Azure Portal FQDN of the Fleet managed namespace.")
+  portalFqdn?: string;
 }
 
 @added(Versions.v2025_08_01_preview)

specification/containerservice/resource-manager/Microsoft.ContainerService/fleet/preview/2025-08-01-preview/examples/FleetManagedNamespaces_Get.json

@@ -88,7 +88,8 @@
           },
           "status": {
             "lastOperationError": {}
-          }
+          },
+          "portalFqdn": "fleet1-namespace1-abc123.portal.hcp.eastus.azmk8s.io"
         },
         "eTag": "\"EtagValue\"",
         "tags": {

specification/containerservice/resource-manager/Microsoft.ContainerService/fleet/preview/2025-08-01-preview/examples/FleetManagedNamespaces_ListByFleet.json

@@ -90,7 +90,8 @@
               },
               "status": {
                 "lastOperationError": {}
-              }
+              },
+              "portalFqdn": "fleet1-namespace1-abc123.portal.hcp.eastus.azmk8s.io"
             },
             "eTag": "\"EtagValue\"",
             "tags": {

specification/containerservice/resource-manager/Microsoft.ContainerService/fleet/preview/2025-08-01-preview/fleets.json

@@ -3430,6 +3430,11 @@
           "$ref": "#/definitions/FleetManagedNamespaceStatus",
           "description": "Status information of the last operation for fleet managed namespace.",
           "readOnly": true
+        },
+        "portalFqdn": {
+          "type": "string",
+          "description": "The special FQDN used by the Azure Portal to access the Managed Cluster. This FQDN is for use only by the Azure Portal and should not be used by other clients. The Azure Portal requires certain Cross-Origin Resource Sharing (CORS) headers to be sent in some responses, which Kubernetes APIServer doesn't handle by default. This special FQDN supports CORS, allowing the Azure Portal to function properly.",
+          "readOnly": true
         }
       },
       "required": [