feat(toolkit): add bulk delete tool, fix TUI exit hang and tenant re-prompt

- New Scripts/Bulk-DeletePolicies.ps1: type-DELETE confirmation, -WhatIf dry-run
- Fix infinite loop in Start-IntuneToolkit.ps1 when fzf missing (numbered-menu
  Exit returned "EXIT" but check only matched fzf's "[Exit]" string)
- Start-IntuneManagementTui.ps1 no longer re-prompts for TenantId when the
  launcher already resolved one; also fixes misleading "regex" wording on
  the Name filter prompt (it's a literal substring match)

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

Start-IntuneToolkit.ps1

@@ -249,7 +249,7 @@ if(-not $TenantId)
     $tenantOptions += "[Exit]"
 
     $selectedTenantDisplay = Select-MenuItem -Items $tenantOptions -Header "Select a tenant"
-    if(-not $selectedTenantDisplay -or $selectedTenantDisplay -eq "[Exit]")
+    if(-not $selectedTenantDisplay -or $selectedTenantDisplay -eq "[Exit]" -or $selectedTenantDisplay -eq "EXIT")
     {
         exit 0
     }
@@ -308,6 +308,7 @@ $commonParams = @{
 }
 
 $menuItems = @(
+    "21. Bulk delete policies"
     "20. Export Entra role membership"
     "19. Document Conditional Access policies"
     "18. Rotate app secret"
@@ -371,6 +372,7 @@ while($true)
         6  { $script = "Scripts/Backup-Restore-Assignments.ps1" }
         7  { $script = "Scripts/Export-AssignmentsToCsv.ps1" }
         8  { $script = "Scripts/Bulk-RenamePolicies.ps1" }
+        21 { $script = "Scripts/Bulk-DeletePolicies.ps1" }
         9  { $script = "Scripts/Bulk-DeviceOperations.ps1" }
         10 { $script = "Scripts/Deploy-IntuneBaseline.ps1" }
         11 { $script = "Scripts/Deploy-IntuneBaseline.ps1" }