Add SSE live updates for bestellungen

modules/erp/bestellungen/service.php

@@ -352,3 +352,28 @@ SQL;
         'next_limit' => min($totalCount, $limit + $pageSize),
     ];
 }
+
+function get_sales_order_realtime_snapshot(PDO $pdo, int $limit = 1000): array
+{
+    $limit = max(1, min(2000, $limit));
+
+    $stmt = $pdo->prepare(
+        'SELECT id, created_at, updated_at
+         FROM public.sales_order
+         ORDER BY updated_at DESC NULLS LAST, id DESC
+         LIMIT :limit'
+    );
+    $stmt->bindValue(':limit', $limit, PDO::PARAM_INT);
+    $stmt->execute();
+
+    $rows = [];
+    foreach ($stmt->fetchAll() as $row) {
+        $rows[] = [
+            'id' => (int) ($row['id'] ?? 0),
+            'created_at' => (string) ($row['created_at'] ?? ''),
+            'updated_at' => (string) ($row['updated_at'] ?? ''),
+        ];
+    }
+
+    return $rows;
+}