Geräte-Tab: serverseitige Suche via Graph API

Suche ruft bei jeder Eingabe die API auf statt lokal zu filtern.
Seriennummer wird per exaktem eq-Filter parallel gesucht und mit
Namens-Treffern zusammengeführt (Graph unterstützt kein startswith
auf serialNumber).

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

src/Api.ps1

@@ -1544,23 +1544,54 @@ function Search-DevicesEndpoint {
     $q          = [string]$Query.q
     $os         = [string]$Query.os
     $compliance = [string]$Query.compliance
-    $top        = 100
+    $top        = 50
 
-    $filters = @()
-    if ($q -and $q.Length -ge 2) {
-        $qEnc = [uri]::EscapeDataString($q)
-        $filters += "(startswith(deviceName,'$q') or startswith(userDisplayName,'$q') or startswith(serialNumber,'$q'))"
-    }
-    if ($os)         { $filters += "operatingSystem eq '$os'" }
-    if ($compliance) { $filters += "complianceState eq '$compliance'" }
-
-    $filterStr = if ($filters.Count -gt 0) { '$filter=' + [uri]::EscapeDataString(($filters -join ' and ')) + '&' } else { '' }
     $select = 'id,deviceName,userDisplayName,userPrincipalName,operatingSystem,osVersion,complianceState,lastSyncDateTime,managementState,serialNumber,model,manufacturer,enrolledDateTime'
-    $uri = "https://graph.microsoft.com/v1.0/deviceManagement/managedDevices?${filterStr}`$select=$select&`$top=$top&`$orderby=deviceName"
 
+    # Ohne Suchbegriff: alle Geräte (erste Seite)
+    # Mit Suchbegriff: Graph unterstuetzt startswith nur auf deviceName/userDisplayName/userPrincipalName.
+    # Seriennummer wird separat per exaktem Filter gesucht und mit Name-Ergebnissen zusammengefuehrt.
+    $nameItems = @()
+    $snItems   = @()
+
+    if ($q -and $q.Length -ge 2) {
+        $filters = @()
+        $nameFilter = "(startswith(deviceName,'$q') or startswith(userDisplayName,'$q') or startswith(userPrincipalName,'$q'))"
+        $filters += $nameFilter
+        if ($os)         { $filters += "operatingSystem eq '$os'" }
+        if ($compliance) { $filters += "complianceState eq '$compliance'" }
+        $filterStr = '$filter=' + [uri]::EscapeDataString(($filters -join ' and ')) + '&'
+        $uri = "https://graph.microsoft.com/v1.0/deviceManagement/managedDevices?${filterStr}`$select=$select&`$top=$top&`$orderby=deviceName"
+        $resp = Invoke-MgGraphRequestRetry -Uri $uri -Method GET
+        $nameItems = @($resp.value)
+
+        # Seriennummer: exakter Vergleich (Graph unterstuetzt kein startswith auf serialNumber)
+        $snFilters = @("serialNumber eq '$q'")
+        if ($os)         { $snFilters += "operatingSystem eq '$os'" }
+        if ($compliance) { $snFilters += "complianceState eq '$compliance'" }
+        $snFilter = '$filter=' + [uri]::EscapeDataString(($snFilters -join ' and ')) + '&'
+        $snUri = "https://graph.microsoft.com/v1.0/deviceManagement/managedDevices?${snFilter}`$select=$select&`$top=10"
+        try {
+            $snResp = Invoke-MgGraphRequestRetry -Uri $snUri -Method GET
+            $snItems = @($snResp.value)
+        } catch { $snItems = @() }
+    } else {
+        $filters = @()
+        if ($os)         { $filters += "operatingSystem eq '$os'" }
+        if ($compliance) { $filters += "complianceState eq '$compliance'" }
+        $filterStr = if ($filters.Count -gt 0) { '$filter=' + [uri]::EscapeDataString(($filters -join ' and ')) + '&' } else { '' }
+        $uri = "https://graph.microsoft.com/v1.0/deviceManagement/managedDevices?${filterStr}`$select=$select&`$top=$top&`$orderby=deviceName"
+        $resp = Invoke-MgGraphRequestRetry -Uri $uri -Method GET
+        $nameItems = @($resp.value)
+    }
+
+    # Zusammenfuehren, Duplikate entfernen
+    $seen  = @{}
+    $all   = @($nameItems) + @($snItems)
     $items = @()
-    $resp = Invoke-MgGraphRequestRetry -Uri $uri -Method GET
-    foreach ($d in $resp.value) {
+    foreach ($d in $all) {
+        if (-not $d.id -or $seen[$d.id]) { continue }
+        $seen[$d.id] = $true
         $items += [pscustomobject]@{
             Id               = $d.id
             DeviceName       = $d.deviceName