Enhance inbound management by removing MaxClients property

- Removed the MaxClients property from Inbound-related data models, including InboundDto and PublishInboundCommand.
- Updated related methods and handlers to reflect the removal of MaxClients, ensuring consistent behavior across the application.
- Adjusted API documentation and frontend components to remove references to MaxClients, streamlining the inbound publishing process.
- Enhanced logging in command handlers to handle node unavailability scenarios during user actions.
- Improved database schema and migrations to align with the updated data model.

backend/tests/PnvPanel.Domain.Tests/Inbounds/InboundTests.cs

@@ -35,16 +35,15 @@ public class InboundTests
     }
 
     [Fact]
-    public void Publish_SetsDisplayNameRolesAndMaxClients()
+    public void Publish_SetsDisplayNameAndRoles()
     {
         var inbound = Inbound.FromRemote(Guid.NewGuid(), "12", VpnProtocol.Vless, "Germany", 443);
         var roleId = Guid.NewGuid();
 
-        inbound.Publish("Germany (VLESS)", [roleId, roleId], 100);
+        inbound.Publish("Germany (VLESS)", [roleId, roleId]);
 
         Assert.True(inbound.IsPublished);
         Assert.Equal("Germany (VLESS)", inbound.DisplayName);
-        Assert.Equal(100, inbound.MaxClients);
         Assert.Single(inbound.AllowedRoleIds);
         Assert.Contains(roleId, inbound.AllowedRoleIds);
     }
@@ -54,7 +53,7 @@ public class InboundTests
     {
         var inbound = Inbound.FromRemote(Guid.NewGuid(), "12", VpnProtocol.Vless, "Germany", 443);
         var roleId = Guid.NewGuid();
-        inbound.Publish("Germany", [roleId], null);
+        inbound.Publish("Germany", [roleId]);
 
         inbound.Unpublish();