Group Management: Benutzer-Tab mit Gruppen-Mitgliedschaften

Neuer Tab "Benutzer" im Group Management: Benutzer suchen und alle
Gruppen anzeigen, in denen dieser Mitglied ist (transitiveMemberOf).
Gruppen filterbar, mit Typ-Badge (Sicherheitsgruppe/M365/Verteiler).

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

src/Api.ps1

@@ -66,6 +66,10 @@ function Invoke-ApiHandler {
         return Remove-GroupMemberEndpoint -GroupId $matches[1] -UserId $matches[2]
     }
 
+    if ($Method -eq "GET" -and $Path -match "^/api/users/([^/]+)/memberof$") {
+        return Get-UserMemberOfEndpoint -UserId $matches[1]
+    }
+
     if ($Method -eq "GET" -and $Path -match "^/api/apps/([^/]+)/details$") {
         return Get-AppDetailsEndpoint -AppId $matches[1]
     }
@@ -1490,6 +1494,32 @@ function Search-UsersEndpoint {
     return @{ items = $items; count = $items.Count }
 }
 
+function Get-UserMemberOfEndpoint {
+    param($UserId)
+    $err = Test-Connected
+    if ($err) { return $err }
+
+    $groups = @()
+    $uri = "https://graph.microsoft.com/v1.0/users/$UserId/transitiveMemberOf/microsoft.graph.group?`$select=id,displayName,description,groupTypes,mailEnabled,securityEnabled&`$top=100"
+    while ($uri) {
+        $resp = Invoke-MgGraphRequestRetry -Uri $uri -Method GET
+        foreach ($g in $resp.value) {
+            $type = 'Sicherheitsgruppe'
+            if ($g.groupTypes -contains 'Unified') { $type = 'Microsoft 365' }
+            elseif ($g.mailEnabled -and -not $g.securityEnabled) { $type = 'Verteiler' }
+            $groups += [pscustomobject]@{
+                Id          = $g.id
+                DisplayName = $g.displayName
+                Description = $g.description
+                Type        = $type
+            }
+        }
+        $uri = $resp.'@odata.nextLink'
+    }
+    $groups = $groups | Sort-Object DisplayName
+    return @{ groups = $groups; count = $groups.Count }
+}
+
 # ============================================================
 # Apps
 # ============================================================