fix(db): remove demo data auto-seeding to prevent resurrection of deleted items (v1.3.2)

src/PhonebookManager.php

@@ -110,6 +110,8 @@ class PhonebookManager
         if (!empty($activeExtIds)) {
             $inClause = implode(',', $activeExtIds);
             $db->exec("DELETE FROM phonebook_contacts WHERE is_internal = 1 AND extension_id IS NOT NULL AND extension_id NOT IN ({$inClause})");
+        } else {
+            $db->exec("DELETE FROM phonebook_contacts WHERE is_internal = 1");
         }
     }