Enhance node update functionality to include base address

- Added `BaseAddress` property to `UpdateNodeCommand` and `UpdateNodeBody` for improved node management.
- Implemented validation for the base address in `UpdateNodeCommandHandler`, ensuring it is a valid absolute URI.
- Updated `Node` class to support address updates, including logic to invalidate cached clients on address changes.
- Enhanced frontend components to handle base address input in the node editing dialog and API requests.
- Updated validation rules to enforce base address requirements in `UpdateNodeCommandValidator`.

backend/src/PnvPanel.Application/Admin/Nodes/UpdateNodeCommandHandler.cs

@@ -26,24 +26,43 @@ public sealed class UpdateNodeCommandHandler(
         if (node is null)
             return Result.Failure<NodeDto>(NodeErrors.NotFound);
 
+        if (!Uri.TryCreate(command.BaseAddress, UriKind.Absolute, out var baseAddress))
+            return Result.Failure<NodeDto>(NodeErrors.InvalidBaseAddress);
+
+        var addressChanged = baseAddress != node.BaseAddress;
+        if (addressChanged)
+        {
+            var validation = gateway.ValidateBaseAddress(baseAddress);
+            if (!validation.IsSuccess)
+                return Result.Failure<NodeDto>(validation.Error);
+        }
+
         node.UpdateDetails(command.Name, command.Location);
 
+        if (addressChanged)
+            node.UpdateAddress(baseAddress);
+
         if (command.IsEnabled)
             node.Enable();
         else
             node.Disable();
 
-        if (
+        var credentialsChanged =
             !string.IsNullOrWhiteSpace(command.Username)
-            && !string.IsNullOrWhiteSpace(command.Password)
-        )
+            && !string.IsNullOrWhiteSpace(command.Password);
+        if (credentialsChanged)
         {
             node.UpdateCredentials(
-                new NodeCredentials(command.Username, secretProtector.Protect(command.Password))
+                new NodeCredentials(command.Username!, secretProtector.Protect(command.Password!))
             );
-            gateway.InvalidateClient(node.Id);
         }
 
+        // Клиент в гейтвее закэширован per-node (адрес+креденшлы захвачены при первом создании) —
+        // при смене любого из них старый закэшированный клиент нужно выбросить, иначе гейтвей
+        // продолжит стучаться по старому адресу/с старым паролем до перезапуска процесса.
+        if (addressChanged || credentialsChanged)
+            gateway.InvalidateClient(node.Id);
+
         dbContext.AuditLogs.Add(
             AuditLog.Create(
                 currentUser.UserId,