Support OneLevel container scope for LDAP imports

[JayVDZ]

Summary

Currently, JIM always uses SearchScope.Subtree when importing from LDAP containers. Customers need the ability to select just an OU without automatically including all child OUs.

Current Behaviour

• When a container is selected, LDAP connector always searches with SearchScope.Subtree
• The UI visually indicates child containers are "included" when a parent is selected, but there's no way to select a container with OneLevel scope
• No model property exists to persist the scope choice

Proposed Solution

Phase 1: Basic OneLevel Support

1. Model changes: Add a SearchScope enum property to ConnectedSystemContainer:

   public enum ContainerSearchScope
   {
       Subtree = 0,    // Default - include all descendants
       OneLevel = 1    // Only objects directly in this container
   }

2. UI changes: Add a toggle or dropdown next to each selected container to choose Subtree vs OneLevel

3. Connector changes: Pass the scope to the LDAP connector and respect it in search requests

Phase 2: Advanced Mode (Future Consideration)

Support complex scenarios such as:

• Parent OU with OneLevel scope
• Descendant OU (several levels down) with Subtree scope

This may be difficult to represent in the current MudBlazor TreeView control. Consider an "Advanced" mode where users can:

• Supply DN paths directly in a list/table format
• Specify scope per entry
• Bypass the tree view for complex hierarchies

Technical Notes

• The Included property on ConnectedSystemContainer is currently [NotMapped] and used only for UI display
• GetAllSelectedContainers() in ConnectedSystemUtilities.cs would need to account for scope
• LDAP connector uses SearchScope.Subtree in:
  • LdapConnectorImport.cs:317 (GetFisoResults)
  • LdapConnectorImport.cs:387 (GetDeltaResultsUsingUsn)

Related

This issue was identified while investigating duplicate import objects caused by overlapping container selections (auto-selected child containers when parent already selected with Subtree).