diff --git a/bin/test-xdebug.php b/bin/test-xdebug.php
index f9c85a198..808d95272 100755
--- a/bin/test-xdebug.php
+++ b/bin/test-xdebug.php
@@ -1,3 +1,8 @@
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 #!/usr/bin/env php
 <?php
 
diff --git a/config/bundles.php b/config/bundles.php
index a23a72554..c0624d161 100644
--- a/config/bundles.php
+++ b/config/bundles.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 return [
diff --git a/config/preload.php b/config/preload.php
index a0e7c67e5..b8295892d 100644
--- a/config/preload.php
+++ b/config/preload.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 if (file_exists(dirname(__DIR__) . '/var/cache/prod/srcApp_KernelProdContainer.preload.php')) {
diff --git a/config/quality/phpat.php b/config/quality/phpat.php
index b21976e41..16eac6811 100644
--- a/config/quality/phpat.php
+++ b/config/quality/phpat.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 use PHPat\Selector\Selector;
diff --git a/config/quality/rector.php b/config/quality/rector.php
index e469e2496..1f4766d8b 100644
--- a/config/quality/rector.php
+++ b/config/quality/rector.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 use Rector\Config\RectorConfig;
diff --git a/migrations/Version20250901_AddPerformanceIndexes.php b/migrations/Version20250901_AddPerformanceIndexes.php
index 88a2efabc..355dc786a 100644
--- a/migrations/Version20250901_AddPerformanceIndexes.php
+++ b/migrations/Version20250901_AddPerformanceIndexes.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace DoctrineMigrations;
diff --git a/migrations/Version20250901_EncryptTokenFields.php b/migrations/Version20250901_EncryptTokenFields.php
index 161155d59..c05714708 100644
--- a/migrations/Version20250901_EncryptTokenFields.php
+++ b/migrations/Version20250901_EncryptTokenFields.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace DoctrineMigrations;
diff --git a/rector.php b/rector.php
index 58d1dd410..37d395853 100644
--- a/rector.php
+++ b/rector.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 use Rector\Config\RectorConfig;
diff --git a/src/Command/TtSyncSubticketsCommand.php b/src/Command/TtSyncSubticketsCommand.php
index ba4d560a7..90e070e0e 100644
--- a/src/Command/TtSyncSubticketsCommand.php
+++ b/src/Command/TtSyncSubticketsCommand.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace App\Command;
diff --git a/src/Controller/Admin/DeleteActivityAction.php b/src/Controller/Admin/DeleteActivityAction.php
index 08e0874f6..d4e5a7fd5 100644
--- a/src/Controller/Admin/DeleteActivityAction.php
+++ b/src/Controller/Admin/DeleteActivityAction.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace App\Controller\Admin;
diff --git a/src/Controller/Admin/DeleteContractAction.php b/src/Controller/Admin/DeleteContractAction.php
index 07ca75d2e..96b675fd9 100644
--- a/src/Controller/Admin/DeleteContractAction.php
+++ b/src/Controller/Admin/DeleteContractAction.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace App\Controller\Admin;
diff --git a/src/Controller/Admin/DeleteCustomerAction.php b/src/Controller/Admin/DeleteCustomerAction.php
index d09e55242..495930fa8 100644
--- a/src/Controller/Admin/DeleteCustomerAction.php
+++ b/src/Controller/Admin/DeleteCustomerAction.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace App\Controller\Admin;
diff --git a/src/Controller/Admin/DeletePresetAction.php b/src/Controller/Admin/DeletePresetAction.php
index 466afcbc4..e2e794278 100644
--- a/src/Controller/Admin/DeletePresetAction.php
+++ b/src/Controller/Admin/DeletePresetAction.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace App\Controller\Admin;
diff --git a/src/Controller/Admin/DeleteProjectAction.php b/src/Controller/Admin/DeleteProjectAction.php
index 031faaa1a..00eb38d19 100644
--- a/src/Controller/Admin/DeleteProjectAction.php
+++ b/src/Controller/Admin/DeleteProjectAction.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace App\Controller\Admin;
diff --git a/src/Controller/Admin/DeleteTeamAction.php b/src/Controller/Admin/DeleteTeamAction.php
index 85721d74d..1c5bf9c1c 100644
--- a/src/Controller/Admin/DeleteTeamAction.php
+++ b/src/Controller/Admin/DeleteTeamAction.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace App\Controller\Admin;
diff --git a/src/Controller/Admin/DeleteTicketSystemAction.php b/src/Controller/Admin/DeleteTicketSystemAction.php
index 0a8325784..a8c358d91 100644
--- a/src/Controller/Admin/DeleteTicketSystemAction.php
+++ b/src/Controller/Admin/DeleteTicketSystemAction.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace App\Controller\Admin;
diff --git a/src/Controller/Admin/DeleteUserAction.php b/src/Controller/Admin/DeleteUserAction.php
index f9da3032d..b54acdc04 100644
--- a/src/Controller/Admin/DeleteUserAction.php
+++ b/src/Controller/Admin/DeleteUserAction.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace App\Controller\Admin;
diff --git a/src/Controller/Admin/GetContractsAction.php b/src/Controller/Admin/GetContractsAction.php
index 0b3e64ab3..a4fbe590c 100644
--- a/src/Controller/Admin/GetContractsAction.php
+++ b/src/Controller/Admin/GetContractsAction.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace App\Controller\Admin;
diff --git a/src/Controller/Admin/GetCustomersAction.php b/src/Controller/Admin/GetCustomersAction.php
index 287779295..e46bc5780 100644
--- a/src/Controller/Admin/GetCustomersAction.php
+++ b/src/Controller/Admin/GetCustomersAction.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace App\Controller\Admin;
diff --git a/src/Controller/Admin/GetPresetsAction.php b/src/Controller/Admin/GetPresetsAction.php
index 027ac434b..5d1f3c446 100644
--- a/src/Controller/Admin/GetPresetsAction.php
+++ b/src/Controller/Admin/GetPresetsAction.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace App\Controller\Admin;
diff --git a/src/Controller/Admin/GetTeamsAction.php b/src/Controller/Admin/GetTeamsAction.php
index da8fb1678..80744ae3a 100644
--- a/src/Controller/Admin/GetTeamsAction.php
+++ b/src/Controller/Admin/GetTeamsAction.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace App\Controller\Admin;
diff --git a/src/Controller/Admin/GetTicketSystemsAction.php b/src/Controller/Admin/GetTicketSystemsAction.php
index 3455276e6..c88a657b5 100644
--- a/src/Controller/Admin/GetTicketSystemsAction.php
+++ b/src/Controller/Admin/GetTicketSystemsAction.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace App\Controller\Admin;
diff --git a/src/Controller/Admin/GetUsersAction.php b/src/Controller/Admin/GetUsersAction.php
index 39140ceb5..2c09811dc 100644
--- a/src/Controller/Admin/GetUsersAction.php
+++ b/src/Controller/Admin/GetUsersAction.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace App\Controller\Admin;
diff --git a/src/Controller/Admin/SaveActivityAction.php b/src/Controller/Admin/SaveActivityAction.php
index ae1d583dd..edae237ef 100644
--- a/src/Controller/Admin/SaveActivityAction.php
+++ b/src/Controller/Admin/SaveActivityAction.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace App\Controller\Admin;
diff --git a/src/Controller/Admin/SaveContractAction.php b/src/Controller/Admin/SaveContractAction.php
index d0f5e4e10..091e242be 100644
--- a/src/Controller/Admin/SaveContractAction.php
+++ b/src/Controller/Admin/SaveContractAction.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace App\Controller\Admin;
diff --git a/src/Controller/Admin/SaveCustomerAction.php b/src/Controller/Admin/SaveCustomerAction.php
index 08575a413..c264c2f42 100644
--- a/src/Controller/Admin/SaveCustomerAction.php
+++ b/src/Controller/Admin/SaveCustomerAction.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace App\Controller\Admin;
diff --git a/src/Controller/Admin/SavePresetAction.php b/src/Controller/Admin/SavePresetAction.php
index 6757ef5b1..293623f18 100644
--- a/src/Controller/Admin/SavePresetAction.php
+++ b/src/Controller/Admin/SavePresetAction.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace App\Controller\Admin;
diff --git a/src/Controller/Admin/SaveProjectAction.php b/src/Controller/Admin/SaveProjectAction.php
index 2994db962..45935a142 100644
--- a/src/Controller/Admin/SaveProjectAction.php
+++ b/src/Controller/Admin/SaveProjectAction.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace App\Controller\Admin;
diff --git a/src/Controller/Admin/SaveTeamAction.php b/src/Controller/Admin/SaveTeamAction.php
index 6701a4c11..b3a782c7f 100644
--- a/src/Controller/Admin/SaveTeamAction.php
+++ b/src/Controller/Admin/SaveTeamAction.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace App\Controller\Admin;
diff --git a/src/Controller/Admin/SaveTicketSystemAction.php b/src/Controller/Admin/SaveTicketSystemAction.php
index 010cdeec4..851b40585 100644
--- a/src/Controller/Admin/SaveTicketSystemAction.php
+++ b/src/Controller/Admin/SaveTicketSystemAction.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace App\Controller\Admin;
diff --git a/src/Controller/Admin/SaveUserAction.php b/src/Controller/Admin/SaveUserAction.php
index b662728fc..5f8b938bc 100644
--- a/src/Controller/Admin/SaveUserAction.php
+++ b/src/Controller/Admin/SaveUserAction.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace App\Controller\Admin;
diff --git a/src/Controller/Admin/SyncAllProjectSubticketsAction.php b/src/Controller/Admin/SyncAllProjectSubticketsAction.php
index ea1233a16..413df99df 100644
--- a/src/Controller/Admin/SyncAllProjectSubticketsAction.php
+++ b/src/Controller/Admin/SyncAllProjectSubticketsAction.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace App\Controller\Admin;
diff --git a/src/Controller/Admin/SyncJiraEntriesAction.php b/src/Controller/Admin/SyncJiraEntriesAction.php
index cafaece15..87496eb12 100644
--- a/src/Controller/Admin/SyncJiraEntriesAction.php
+++ b/src/Controller/Admin/SyncJiraEntriesAction.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace App\Controller\Admin;
diff --git a/src/Controller/Admin/SyncProjectSubticketsAction.php b/src/Controller/Admin/SyncProjectSubticketsAction.php
index dfcccde69..ccaffb9dc 100644
--- a/src/Controller/Admin/SyncProjectSubticketsAction.php
+++ b/src/Controller/Admin/SyncProjectSubticketsAction.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace App\Controller\Admin;
diff --git a/src/Controller/BaseController.php b/src/Controller/BaseController.php
index a2b5a7796..29cced273 100644
--- a/src/Controller/BaseController.php
+++ b/src/Controller/BaseController.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 /**
diff --git a/src/Controller/Controlling/ExportAction.php b/src/Controller/Controlling/ExportAction.php
index 23a53b31a..60feacb0c 100644
--- a/src/Controller/Controlling/ExportAction.php
+++ b/src/Controller/Controlling/ExportAction.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace App\Controller\Controlling;
diff --git a/src/Controller/ControllingController.php b/src/Controller/ControllingController.php
index 0cf3b37fd..968b93a19 100644
--- a/src/Controller/ControllingController.php
+++ b/src/Controller/ControllingController.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace App\Controller;
diff --git a/src/Controller/Default/ExportCsvAction.php b/src/Controller/Default/ExportCsvAction.php
index 0cbb4fd28..6053d4e76 100644
--- a/src/Controller/Default/ExportCsvAction.php
+++ b/src/Controller/Default/ExportCsvAction.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace App\Controller\Default;
diff --git a/src/Controller/Default/GetActivitiesAction.php b/src/Controller/Default/GetActivitiesAction.php
index 6f027588f..093e6894d 100644
--- a/src/Controller/Default/GetActivitiesAction.php
+++ b/src/Controller/Default/GetActivitiesAction.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace App\Controller\Default;
diff --git a/src/Controller/Default/GetAllProjectsAction.php b/src/Controller/Default/GetAllProjectsAction.php
index b51f49ed0..4b5259575 100644
--- a/src/Controller/Default/GetAllProjectsAction.php
+++ b/src/Controller/Default/GetAllProjectsAction.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace App\Controller\Default;
diff --git a/src/Controller/Default/GetCustomerAction.php b/src/Controller/Default/GetCustomerAction.php
index cedf84e05..ff10d95c1 100644
--- a/src/Controller/Default/GetCustomerAction.php
+++ b/src/Controller/Default/GetCustomerAction.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace App\Controller\Default;
diff --git a/src/Controller/Default/GetCustomersAction.php b/src/Controller/Default/GetCustomersAction.php
index f76cb965b..338fdb469 100644
--- a/src/Controller/Default/GetCustomersAction.php
+++ b/src/Controller/Default/GetCustomersAction.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace App\Controller\Default;
diff --git a/src/Controller/Default/GetDataAction.php b/src/Controller/Default/GetDataAction.php
index 21175b3ec..7d4337b52 100644
--- a/src/Controller/Default/GetDataAction.php
+++ b/src/Controller/Default/GetDataAction.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace App\Controller\Default;
diff --git a/src/Controller/Default/GetHolidaysAction.php b/src/Controller/Default/GetHolidaysAction.php
index 289e10667..a79abdd3d 100644
--- a/src/Controller/Default/GetHolidaysAction.php
+++ b/src/Controller/Default/GetHolidaysAction.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace App\Controller\Default;
diff --git a/src/Controller/Default/GetProjectStructureAction.php b/src/Controller/Default/GetProjectStructureAction.php
index 528ab42f6..e56cc48ac 100644
--- a/src/Controller/Default/GetProjectStructureAction.php
+++ b/src/Controller/Default/GetProjectStructureAction.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace App\Controller\Default;
diff --git a/src/Controller/Default/GetProjectsAction.php b/src/Controller/Default/GetProjectsAction.php
index 01eb5fa35..6eec1c180 100644
--- a/src/Controller/Default/GetProjectsAction.php
+++ b/src/Controller/Default/GetProjectsAction.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace App\Controller\Default;
diff --git a/src/Controller/Default/GetSummaryAction.php b/src/Controller/Default/GetSummaryAction.php
index d78e13325..f56ecbfac 100644
--- a/src/Controller/Default/GetSummaryAction.php
+++ b/src/Controller/Default/GetSummaryAction.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace App\Controller\Default;
diff --git a/src/Controller/Default/GetTicketTimeSummaryAction.php b/src/Controller/Default/GetTicketTimeSummaryAction.php
index 169240028..de9e2ce97 100644
--- a/src/Controller/Default/GetTicketTimeSummaryAction.php
+++ b/src/Controller/Default/GetTicketTimeSummaryAction.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace App\Controller\Default;
diff --git a/src/Controller/Default/GetTicketTimeSummaryJsAction.php b/src/Controller/Default/GetTicketTimeSummaryJsAction.php
index 8850cb0cf..b080238d5 100644
--- a/src/Controller/Default/GetTicketTimeSummaryJsAction.php
+++ b/src/Controller/Default/GetTicketTimeSummaryJsAction.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace App\Controller\Default;
diff --git a/src/Controller/Default/GetTimeSummaryAction.php b/src/Controller/Default/GetTimeSummaryAction.php
index 7937a8660..4eb8d093e 100644
--- a/src/Controller/Default/GetTimeSummaryAction.php
+++ b/src/Controller/Default/GetTimeSummaryAction.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace App\Controller\Default;
diff --git a/src/Controller/Default/GetUsersAction.php b/src/Controller/Default/GetUsersAction.php
index b0e0b1a7e..5543da498 100644
--- a/src/Controller/Default/GetUsersAction.php
+++ b/src/Controller/Default/GetUsersAction.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace App\Controller\Default;
diff --git a/src/Controller/Default/IndexAction.php b/src/Controller/Default/IndexAction.php
index cb886608e..3b379a119 100644
--- a/src/Controller/Default/IndexAction.php
+++ b/src/Controller/Default/IndexAction.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace App\Controller\Default;
diff --git a/src/Controller/Default/JiraOAuthCallbackAction.php b/src/Controller/Default/JiraOAuthCallbackAction.php
index b3818cfbc..c1ea16b0f 100644
--- a/src/Controller/Default/JiraOAuthCallbackAction.php
+++ b/src/Controller/Default/JiraOAuthCallbackAction.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace App\Controller\Default;
diff --git a/src/Controller/Interpretation/BaseInterpretationController.php b/src/Controller/Interpretation/BaseInterpretationController.php
index 95a38c682..65a9ba7a1 100644
--- a/src/Controller/Interpretation/BaseInterpretationController.php
+++ b/src/Controller/Interpretation/BaseInterpretationController.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace App\Controller\Interpretation;
diff --git a/src/Controller/Interpretation/GetAllEntriesAction.php b/src/Controller/Interpretation/GetAllEntriesAction.php
index 35f320999..0c52fe246 100644
--- a/src/Controller/Interpretation/GetAllEntriesAction.php
+++ b/src/Controller/Interpretation/GetAllEntriesAction.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace App\Controller\Interpretation;
diff --git a/src/Controller/Interpretation/GetLastEntriesAction.php b/src/Controller/Interpretation/GetLastEntriesAction.php
index c951c43b2..ddd83c925 100644
--- a/src/Controller/Interpretation/GetLastEntriesAction.php
+++ b/src/Controller/Interpretation/GetLastEntriesAction.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace App\Controller\Interpretation;
diff --git a/src/Controller/Interpretation/GroupByActivityAction.php b/src/Controller/Interpretation/GroupByActivityAction.php
index 1fa033172..8ef6d881d 100644
--- a/src/Controller/Interpretation/GroupByActivityAction.php
+++ b/src/Controller/Interpretation/GroupByActivityAction.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace App\Controller\Interpretation;
diff --git a/src/Controller/Interpretation/GroupByCustomerAction.php b/src/Controller/Interpretation/GroupByCustomerAction.php
index b4044faea..13606edde 100644
--- a/src/Controller/Interpretation/GroupByCustomerAction.php
+++ b/src/Controller/Interpretation/GroupByCustomerAction.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace App\Controller\Interpretation;
diff --git a/src/Controller/Interpretation/GroupByProjectAction.php b/src/Controller/Interpretation/GroupByProjectAction.php
index 028c46ba8..2c3a92834 100644
--- a/src/Controller/Interpretation/GroupByProjectAction.php
+++ b/src/Controller/Interpretation/GroupByProjectAction.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace App\Controller\Interpretation;
diff --git a/src/Controller/Interpretation/GroupByTicketAction.php b/src/Controller/Interpretation/GroupByTicketAction.php
index 8a6d0358f..ae4fb470f 100644
--- a/src/Controller/Interpretation/GroupByTicketAction.php
+++ b/src/Controller/Interpretation/GroupByTicketAction.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace App\Controller\Interpretation;
diff --git a/src/Controller/Interpretation/GroupByUserAction.php b/src/Controller/Interpretation/GroupByUserAction.php
index f3e05ed56..9e5381ad4 100644
--- a/src/Controller/Interpretation/GroupByUserAction.php
+++ b/src/Controller/Interpretation/GroupByUserAction.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace App\Controller\Interpretation;
diff --git a/src/Controller/Interpretation/GroupByWorktimeAction.php b/src/Controller/Interpretation/GroupByWorktimeAction.php
index d8a2fda06..5646c8006 100644
--- a/src/Controller/Interpretation/GroupByWorktimeAction.php
+++ b/src/Controller/Interpretation/GroupByWorktimeAction.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace App\Controller\Interpretation;
diff --git a/src/Controller/SecurityController.php b/src/Controller/SecurityController.php
index 1bb152fdd..668cc7101 100644
--- a/src/Controller/SecurityController.php
+++ b/src/Controller/SecurityController.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace App\Controller;
diff --git a/src/Controller/Settings/SaveSettingsAction.php b/src/Controller/Settings/SaveSettingsAction.php
index f0716b9f1..2b7d9cc01 100644
--- a/src/Controller/Settings/SaveSettingsAction.php
+++ b/src/Controller/Settings/SaveSettingsAction.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace App\Controller\Settings;
diff --git a/src/Controller/Status/CheckStatusAction.php b/src/Controller/Status/CheckStatusAction.php
index 7b171fefc..dbbc9fd7b 100644
--- a/src/Controller/Status/CheckStatusAction.php
+++ b/src/Controller/Status/CheckStatusAction.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace App\Controller\Status;
diff --git a/src/Controller/Tracking/BaseTrackingController.php b/src/Controller/Tracking/BaseTrackingController.php
index c52b0bf2d..504f6e5e6 100644
--- a/src/Controller/Tracking/BaseTrackingController.php
+++ b/src/Controller/Tracking/BaseTrackingController.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace App\Controller\Tracking;
diff --git a/src/Controller/Tracking/BulkEntryAction.php b/src/Controller/Tracking/BulkEntryAction.php
index ab49df9a9..26d152ffa 100644
--- a/src/Controller/Tracking/BulkEntryAction.php
+++ b/src/Controller/Tracking/BulkEntryAction.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace App\Controller\Tracking;
diff --git a/src/Controller/Tracking/DeleteEntryAction.php b/src/Controller/Tracking/DeleteEntryAction.php
index 5a9e93c92..c782a90bd 100644
--- a/src/Controller/Tracking/DeleteEntryAction.php
+++ b/src/Controller/Tracking/DeleteEntryAction.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace App\Controller\Tracking;
diff --git a/src/Controller/Tracking/SaveEntryAction.php b/src/Controller/Tracking/SaveEntryAction.php
index 138ca873a..00f8c12e4 100644
--- a/src/Controller/Tracking/SaveEntryAction.php
+++ b/src/Controller/Tracking/SaveEntryAction.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace App\Controller\Tracking;
diff --git a/src/Dto/ActivitySaveDto.php b/src/Dto/ActivitySaveDto.php
index 201088237..1aaacbc41 100644
--- a/src/Dto/ActivitySaveDto.php
+++ b/src/Dto/ActivitySaveDto.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace App\Dto;
diff --git a/src/Dto/AdminSyncDto.php b/src/Dto/AdminSyncDto.php
index 591f963e5..9a262069d 100644
--- a/src/Dto/AdminSyncDto.php
+++ b/src/Dto/AdminSyncDto.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace App\Dto;
diff --git a/src/Dto/BulkEntryDto.php b/src/Dto/BulkEntryDto.php
index 124110dbb..fff48a8aa 100644
--- a/src/Dto/BulkEntryDto.php
+++ b/src/Dto/BulkEntryDto.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace App\Dto;
diff --git a/src/Dto/ContractSaveDto.php b/src/Dto/ContractSaveDto.php
index c5425a591..984bd6c0c 100644
--- a/src/Dto/ContractSaveDto.php
+++ b/src/Dto/ContractSaveDto.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace App\Dto;
diff --git a/src/Dto/CustomerSaveDto.php b/src/Dto/CustomerSaveDto.php
index ba2c05242..f207bce80 100644
--- a/src/Dto/CustomerSaveDto.php
+++ b/src/Dto/CustomerSaveDto.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace App\Dto;
diff --git a/src/Dto/DatabaseResultDto.php b/src/Dto/DatabaseResultDto.php
index 139d0b87f..8a0155602 100644
--- a/src/Dto/DatabaseResultDto.php
+++ b/src/Dto/DatabaseResultDto.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace App\Dto;
diff --git a/src/Dto/EntrySaveDto.php b/src/Dto/EntrySaveDto.php
index 6005cc910..78bb43a08 100644
--- a/src/Dto/EntrySaveDto.php
+++ b/src/Dto/EntrySaveDto.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace App\Dto;
diff --git a/src/Dto/ExportQueryDto.php b/src/Dto/ExportQueryDto.php
index 72788d2bc..13763473f 100644
--- a/src/Dto/ExportQueryDto.php
+++ b/src/Dto/ExportQueryDto.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace App\Dto;
diff --git a/src/Dto/IdDto.php b/src/Dto/IdDto.php
index 37739f0bc..68e87acbc 100644
--- a/src/Dto/IdDto.php
+++ b/src/Dto/IdDto.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace App\Dto;
diff --git a/src/Dto/InterpretationFiltersDto.php b/src/Dto/InterpretationFiltersDto.php
index 3bd2504f0..5ab1ab4d2 100644
--- a/src/Dto/InterpretationFiltersDto.php
+++ b/src/Dto/InterpretationFiltersDto.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace App\Dto;
diff --git a/src/Dto/PresetSaveDto.php b/src/Dto/PresetSaveDto.php
index 086899968..2b25d8030 100644
--- a/src/Dto/PresetSaveDto.php
+++ b/src/Dto/PresetSaveDto.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace App\Dto;
diff --git a/src/Dto/ProjectSaveDto.php b/src/Dto/ProjectSaveDto.php
index d18d85a6e..54d1b7b0b 100644
--- a/src/Dto/ProjectSaveDto.php
+++ b/src/Dto/ProjectSaveDto.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace App\Dto;
diff --git a/src/Dto/TeamSaveDto.php b/src/Dto/TeamSaveDto.php
index 6e4a794b7..bd4b3ebdc 100644
--- a/src/Dto/TeamSaveDto.php
+++ b/src/Dto/TeamSaveDto.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace App\Dto;
diff --git a/src/Dto/TicketSystemSaveDto.php b/src/Dto/TicketSystemSaveDto.php
index c0c85851c..176ba611b 100644
--- a/src/Dto/TicketSystemSaveDto.php
+++ b/src/Dto/TicketSystemSaveDto.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace App\Dto;
diff --git a/src/Dto/UserSaveDto.php b/src/Dto/UserSaveDto.php
index 76a13cce0..2b288af9c 100644
--- a/src/Dto/UserSaveDto.php
+++ b/src/Dto/UserSaveDto.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace App\Dto;
diff --git a/src/Entity/Account.php b/src/Entity/Account.php
index 81f89099d..20461b3d2 100644
--- a/src/Entity/Account.php
+++ b/src/Entity/Account.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace App\Entity;
diff --git a/src/Entity/Activity.php b/src/Entity/Activity.php
index d81792ec2..cd6b2c2cf 100644
--- a/src/Entity/Activity.php
+++ b/src/Entity/Activity.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace App\Entity;
diff --git a/src/Entity/Contract.php b/src/Entity/Contract.php
index 3e705ff82..97a7de546 100644
--- a/src/Entity/Contract.php
+++ b/src/Entity/Contract.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace App\Entity;
diff --git a/src/Entity/Customer.php b/src/Entity/Customer.php
index 6bde62a43..48cf2ce65 100644
--- a/src/Entity/Customer.php
+++ b/src/Entity/Customer.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace App\Entity;
diff --git a/src/Entity/Entry.php b/src/Entity/Entry.php
index 5de5acf93..5ea02f38c 100644
--- a/src/Entity/Entry.php
+++ b/src/Entity/Entry.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace App\Entity;
diff --git a/src/Entity/Holiday.php b/src/Entity/Holiday.php
index ee7ff5022..1d970b2f2 100644
--- a/src/Entity/Holiday.php
+++ b/src/Entity/Holiday.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace App\Entity;
diff --git a/src/Entity/Preset.php b/src/Entity/Preset.php
index dc145850e..8d25a51b8 100644
--- a/src/Entity/Preset.php
+++ b/src/Entity/Preset.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace App\Entity;
diff --git a/src/Entity/Project.php b/src/Entity/Project.php
index e3c625bce..1da4fb063 100644
--- a/src/Entity/Project.php
+++ b/src/Entity/Project.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace App\Entity;
diff --git a/src/Entity/Team.php b/src/Entity/Team.php
index e92165125..5d2b03796 100644
--- a/src/Entity/Team.php
+++ b/src/Entity/Team.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace App\Entity;
diff --git a/src/Entity/Ticket.php b/src/Entity/Ticket.php
index d8ea39d5b..607c9beb8 100644
--- a/src/Entity/Ticket.php
+++ b/src/Entity/Ticket.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 /**
diff --git a/src/Entity/TicketSystem.php b/src/Entity/TicketSystem.php
index 8ed2e3bee..b31851dbe 100644
--- a/src/Entity/TicketSystem.php
+++ b/src/Entity/TicketSystem.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace App\Entity;
diff --git a/src/Entity/User.php b/src/Entity/User.php
index b19b360a8..812679ae1 100644
--- a/src/Entity/User.php
+++ b/src/Entity/User.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace App\Entity;
diff --git a/src/Entity/UserTicketsystem.php b/src/Entity/UserTicketsystem.php
index d2c1d8ae3..369c2827a 100644
--- a/src/Entity/UserTicketsystem.php
+++ b/src/Entity/UserTicketsystem.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace App\Entity;
diff --git a/src/Enum/BillingType.php b/src/Enum/BillingType.php
index d26b8dd07..7dced9dd2 100644
--- a/src/Enum/BillingType.php
+++ b/src/Enum/BillingType.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace App\Enum;
diff --git a/src/Enum/EntryClass.php b/src/Enum/EntryClass.php
index 07496dced..b1386bc8a 100644
--- a/src/Enum/EntryClass.php
+++ b/src/Enum/EntryClass.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace App\Enum;
diff --git a/src/Enum/Period.php b/src/Enum/Period.php
index 527ec3d99..07b938c17 100644
--- a/src/Enum/Period.php
+++ b/src/Enum/Period.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace App\Enum;
diff --git a/src/Enum/TicketSystemType.php b/src/Enum/TicketSystemType.php
index bc1e2c86d..97dd9ba2d 100644
--- a/src/Enum/TicketSystemType.php
+++ b/src/Enum/TicketSystemType.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace App\Enum;
diff --git a/src/Enum/UserType.php b/src/Enum/UserType.php
index af2371d01..442455a77 100644
--- a/src/Enum/UserType.php
+++ b/src/Enum/UserType.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace App\Enum;
diff --git a/src/Event/EntryEvent.php b/src/Event/EntryEvent.php
index b3adfcb12..711827634 100644
--- a/src/Event/EntryEvent.php
+++ b/src/Event/EntryEvent.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace App\Event;
diff --git a/src/EventSubscriber/AccessDeniedSubscriber.php b/src/EventSubscriber/AccessDeniedSubscriber.php
index 58bffb4e9..d6e3ebeb0 100644
--- a/src/EventSubscriber/AccessDeniedSubscriber.php
+++ b/src/EventSubscriber/AccessDeniedSubscriber.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace App\EventSubscriber;
diff --git a/src/EventSubscriber/EntryEventSubscriber.php b/src/EventSubscriber/EntryEventSubscriber.php
index d9dacaa16..65c3c4f72 100644
--- a/src/EventSubscriber/EntryEventSubscriber.php
+++ b/src/EventSubscriber/EntryEventSubscriber.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace App\EventSubscriber;
diff --git a/src/EventSubscriber/ExceptionSubscriber.php b/src/EventSubscriber/ExceptionSubscriber.php
index 156675b00..a127ae331 100644
--- a/src/EventSubscriber/ExceptionSubscriber.php
+++ b/src/EventSubscriber/ExceptionSubscriber.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace App\EventSubscriber;
diff --git a/src/Exception/Integration/Jira/JiraApiException.php b/src/Exception/Integration/Jira/JiraApiException.php
index 4b4f7518c..e1b8f2064 100644
--- a/src/Exception/Integration/Jira/JiraApiException.php
+++ b/src/Exception/Integration/Jira/JiraApiException.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 /**
diff --git a/src/Exception/Integration/Jira/JiraApiInvalidResourceException.php b/src/Exception/Integration/Jira/JiraApiInvalidResourceException.php
index 0cea073b0..48d2c47ad 100644
--- a/src/Exception/Integration/Jira/JiraApiInvalidResourceException.php
+++ b/src/Exception/Integration/Jira/JiraApiInvalidResourceException.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 /**
diff --git a/src/Exception/Integration/Jira/JiraApiUnauthorizedException.php b/src/Exception/Integration/Jira/JiraApiUnauthorizedException.php
index 7bc3076ad..67371a800 100644
--- a/src/Exception/Integration/Jira/JiraApiUnauthorizedException.php
+++ b/src/Exception/Integration/Jira/JiraApiUnauthorizedException.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace App\Exception\Integration\Jira;
diff --git a/src/Extension/NrArrayTranslator.php b/src/Extension/NrArrayTranslator.php
index 2552758c1..fe7b47303 100644
--- a/src/Extension/NrArrayTranslator.php
+++ b/src/Extension/NrArrayTranslator.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 /**
diff --git a/src/Extension/TwigCsvEscapingExtension.php b/src/Extension/TwigCsvEscapingExtension.php
index 137d64404..eece52975 100644
--- a/src/Extension/TwigCsvEscapingExtension.php
+++ b/src/Extension/TwigCsvEscapingExtension.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 /**
diff --git a/src/Kernel.php b/src/Kernel.php
index 97309f86d..c6fc09bdd 100644
--- a/src/Kernel.php
+++ b/src/Kernel.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace App;
diff --git a/src/Model/Base.php b/src/Model/Base.php
index 26ad2b09a..2dd3e4244 100644
--- a/src/Model/Base.php
+++ b/src/Model/Base.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace App\Model;
diff --git a/src/Model/JsonResponse.php b/src/Model/JsonResponse.php
index 665029f8b..80e093723 100644
--- a/src/Model/JsonResponse.php
+++ b/src/Model/JsonResponse.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 /**
diff --git a/src/Model/Response.php b/src/Model/Response.php
index 7ec546cd0..5e0fb08b5 100644
--- a/src/Model/Response.php
+++ b/src/Model/Response.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 /**
diff --git a/src/Repository/ActivityRepository.php b/src/Repository/ActivityRepository.php
index 55012bb42..eb9f8e9bb 100644
--- a/src/Repository/ActivityRepository.php
+++ b/src/Repository/ActivityRepository.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace App\Repository;
diff --git a/src/Repository/ContractRepository.php b/src/Repository/ContractRepository.php
index daeec85b6..74eb5b78a 100644
--- a/src/Repository/ContractRepository.php
+++ b/src/Repository/ContractRepository.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace App\Repository;
diff --git a/src/Repository/CustomerRepository.php b/src/Repository/CustomerRepository.php
index b8d2f5ca6..4c17e4cf5 100644
--- a/src/Repository/CustomerRepository.php
+++ b/src/Repository/CustomerRepository.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace App\Repository;
diff --git a/src/Repository/EntryRepository.php b/src/Repository/EntryRepository.php
index a3ece83d8..12cb15f97 100644
--- a/src/Repository/EntryRepository.php
+++ b/src/Repository/EntryRepository.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace App\Repository;
diff --git a/src/Repository/HolidayRepository.php b/src/Repository/HolidayRepository.php
index 3741ca4da..d9e79f1b3 100644
--- a/src/Repository/HolidayRepository.php
+++ b/src/Repository/HolidayRepository.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace App\Repository;
diff --git a/src/Repository/OptimizedEntryRepository.php b/src/Repository/OptimizedEntryRepository.php
index 8a6eee4ca..dd4fd8d16 100644
--- a/src/Repository/OptimizedEntryRepository.php
+++ b/src/Repository/OptimizedEntryRepository.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace App\Repository;
diff --git a/src/Repository/PresetRepository.php b/src/Repository/PresetRepository.php
index 9d096aa63..97ca1e8a9 100644
--- a/src/Repository/PresetRepository.php
+++ b/src/Repository/PresetRepository.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace App\Repository;
diff --git a/src/Repository/ProjectRepository.php b/src/Repository/ProjectRepository.php
index 9e91f9eb9..39b23a13d 100644
--- a/src/Repository/ProjectRepository.php
+++ b/src/Repository/ProjectRepository.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace App\Repository;
diff --git a/src/Repository/TeamRepository.php b/src/Repository/TeamRepository.php
index faee7607c..d96f3a213 100644
--- a/src/Repository/TeamRepository.php
+++ b/src/Repository/TeamRepository.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace App\Repository;
diff --git a/src/Repository/TicketSystemRepository.php b/src/Repository/TicketSystemRepository.php
index 23c71ed4f..2643bdc13 100644
--- a/src/Repository/TicketSystemRepository.php
+++ b/src/Repository/TicketSystemRepository.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace App\Repository;
diff --git a/src/Repository/UserRepository.php b/src/Repository/UserRepository.php
index d27ace1d9..0efce6493 100644
--- a/src/Repository/UserRepository.php
+++ b/src/Repository/UserRepository.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace App\Repository;
diff --git a/src/Response/Error.php b/src/Response/Error.php
index bf936b43a..6ced2c7ce 100644
--- a/src/Response/Error.php
+++ b/src/Response/Error.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 /**
diff --git a/src/Security/LdapAuthenticator.php b/src/Security/LdapAuthenticator.php
index f0b96be5b..a3b93978d 100644
--- a/src/Security/LdapAuthenticator.php
+++ b/src/Security/LdapAuthenticator.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace App\Security;
diff --git a/src/Service/Cache/QueryCacheService.php b/src/Service/Cache/QueryCacheService.php
index bb25d3945..fff86650d 100644
--- a/src/Service/Cache/QueryCacheService.php
+++ b/src/Service/Cache/QueryCacheService.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace App\Service\Cache;
diff --git a/src/Service/ClockInterface.php b/src/Service/ClockInterface.php
index ba8b85ea9..c67dfaf96 100644
--- a/src/Service/ClockInterface.php
+++ b/src/Service/ClockInterface.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace App\Service;
diff --git a/src/Service/Entry/EntryQueryService.php b/src/Service/Entry/EntryQueryService.php
index 8451aeebc..e0772f50f 100644
--- a/src/Service/Entry/EntryQueryService.php
+++ b/src/Service/Entry/EntryQueryService.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace App\Service\Entry;
diff --git a/src/Service/ExportService.php b/src/Service/ExportService.php
index 27e7fd7c9..4b8baa099 100644
--- a/src/Service/ExportService.php
+++ b/src/Service/ExportService.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace App\Service;
diff --git a/src/Service/Integration/Jira/JiraAuthenticationService.php b/src/Service/Integration/Jira/JiraAuthenticationService.php
index 221ff6463..003a4568a 100644
--- a/src/Service/Integration/Jira/JiraAuthenticationService.php
+++ b/src/Service/Integration/Jira/JiraAuthenticationService.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace App\Service\Integration\Jira;
diff --git a/src/Service/Integration/Jira/JiraHttpClientService.php b/src/Service/Integration/Jira/JiraHttpClientService.php
index dbbe08ab0..f37bb5a2f 100644
--- a/src/Service/Integration/Jira/JiraHttpClientService.php
+++ b/src/Service/Integration/Jira/JiraHttpClientService.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace App\Service\Integration\Jira;
diff --git a/src/Service/Integration/Jira/JiraIntegrationService.php b/src/Service/Integration/Jira/JiraIntegrationService.php
index 020adb95a..5aa0a79eb 100644
--- a/src/Service/Integration/Jira/JiraIntegrationService.php
+++ b/src/Service/Integration/Jira/JiraIntegrationService.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace App\Service\Integration\Jira;
diff --git a/src/Service/Integration/Jira/JiraOAuthApiFactory.php b/src/Service/Integration/Jira/JiraOAuthApiFactory.php
index 9d3f2557a..a51cc83f4 100644
--- a/src/Service/Integration/Jira/JiraOAuthApiFactory.php
+++ b/src/Service/Integration/Jira/JiraOAuthApiFactory.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace App\Service\Integration\Jira;
diff --git a/src/Service/Integration/Jira/JiraOAuthApiService.php b/src/Service/Integration/Jira/JiraOAuthApiService.php
index 9e7dc28b4..ac5550d3f 100644
--- a/src/Service/Integration/Jira/JiraOAuthApiService.php
+++ b/src/Service/Integration/Jira/JiraOAuthApiService.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace App\Service\Integration\Jira;
diff --git a/src/Service/Integration/Jira/JiraTicketService.php b/src/Service/Integration/Jira/JiraTicketService.php
index 3307e72ad..533cca441 100644
--- a/src/Service/Integration/Jira/JiraTicketService.php
+++ b/src/Service/Integration/Jira/JiraTicketService.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace App\Service\Integration\Jira;
diff --git a/src/Service/Integration/Jira/JiraWorkLogService.php b/src/Service/Integration/Jira/JiraWorkLogService.php
index 2e1449adb..ddd1571ca 100644
--- a/src/Service/Integration/Jira/JiraWorkLogService.php
+++ b/src/Service/Integration/Jira/JiraWorkLogService.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace App\Service\Integration\Jira;
diff --git a/src/Service/Ldap/LdapClientService.php b/src/Service/Ldap/LdapClientService.php
index 37087dc4f..85dad903b 100644
--- a/src/Service/Ldap/LdapClientService.php
+++ b/src/Service/Ldap/LdapClientService.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace App\Service\Ldap;
diff --git a/src/Service/Ldap/ModernLdapService.php b/src/Service/Ldap/ModernLdapService.php
index ee23c04bb..b6a698d1a 100644
--- a/src/Service/Ldap/ModernLdapService.php
+++ b/src/Service/Ldap/ModernLdapService.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace App\Service\Ldap;
diff --git a/src/Service/Response/PaginationLinkService.php b/src/Service/Response/PaginationLinkService.php
index dadacbcb9..164a03f3f 100644
--- a/src/Service/Response/PaginationLinkService.php
+++ b/src/Service/Response/PaginationLinkService.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace App\Service\Response;
diff --git a/src/Service/Response/ResponseFactory.php b/src/Service/Response/ResponseFactory.php
index 52b576939..6b3dca2f5 100644
--- a/src/Service/Response/ResponseFactory.php
+++ b/src/Service/Response/ResponseFactory.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace App\Service\Response;
diff --git a/src/Service/Security/TokenEncryptionService.php b/src/Service/Security/TokenEncryptionService.php
index a2d942f77..ff2256496 100644
--- a/src/Service/Security/TokenEncryptionService.php
+++ b/src/Service/Security/TokenEncryptionService.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace App\Service\Security;
diff --git a/src/Service/SubticketSyncService.php b/src/Service/SubticketSyncService.php
index bc05fc508..a14f029b3 100644
--- a/src/Service/SubticketSyncService.php
+++ b/src/Service/SubticketSyncService.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace App\Service;
diff --git a/src/Service/SystemClock.php b/src/Service/SystemClock.php
index 7fc68871a..ffa9b4ef5 100644
--- a/src/Service/SystemClock.php
+++ b/src/Service/SystemClock.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace App\Service;
diff --git a/src/Service/TypeSafety/ArrayTypeHelper.php b/src/Service/TypeSafety/ArrayTypeHelper.php
index 4fb43e562..378b4d8b1 100644
--- a/src/Service/TypeSafety/ArrayTypeHelper.php
+++ b/src/Service/TypeSafety/ArrayTypeHelper.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace App\Service\TypeSafety;
diff --git a/src/Service/Util/LocalizationService.php b/src/Service/Util/LocalizationService.php
index e3c7e27d5..b1a3783cb 100644
--- a/src/Service/Util/LocalizationService.php
+++ b/src/Service/Util/LocalizationService.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace App\Service\Util;
diff --git a/src/Service/Util/TicketService.php b/src/Service/Util/TicketService.php
index 96ab8c16b..fc686e573 100644
--- a/src/Service/Util/TicketService.php
+++ b/src/Service/Util/TicketService.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace App\Service\Util;
diff --git a/src/Service/Util/TimeCalculationService.php b/src/Service/Util/TimeCalculationService.php
index 48b45cfd1..5fb92e627 100644
--- a/src/Service/Util/TimeCalculationService.php
+++ b/src/Service/Util/TimeCalculationService.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace App\Service\Util;
diff --git a/src/Util/PhpSpreadsheet/LOReadFilter.php b/src/Util/PhpSpreadsheet/LOReadFilter.php
index 4701bd2b2..dc29e8f71 100644
--- a/src/Util/PhpSpreadsheet/LOReadFilter.php
+++ b/src/Util/PhpSpreadsheet/LOReadFilter.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 /**
diff --git a/src/Util/RequestEntityHelper.php b/src/Util/RequestEntityHelper.php
index ccc63d676..7ae95a603 100644
--- a/src/Util/RequestEntityHelper.php
+++ b/src/Util/RequestEntityHelper.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace App\Util;
diff --git a/src/Util/RequestHelper.php b/src/Util/RequestHelper.php
index b0446a49f..218410c71 100644
--- a/src/Util/RequestHelper.php
+++ b/src/Util/RequestHelper.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace App\Util;
diff --git a/src/Validator/Constraints/ContractDatesValid.php b/src/Validator/Constraints/ContractDatesValid.php
index 4a7e744e8..c59280da0 100644
--- a/src/Validator/Constraints/ContractDatesValid.php
+++ b/src/Validator/Constraints/ContractDatesValid.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace App\Validator\Constraints;
diff --git a/src/Validator/Constraints/ContractDatesValidValidator.php b/src/Validator/Constraints/ContractDatesValidValidator.php
index dfd88ef71..eceb20939 100644
--- a/src/Validator/Constraints/ContractDatesValidValidator.php
+++ b/src/Validator/Constraints/ContractDatesValidValidator.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace App\Validator\Constraints;
diff --git a/src/Validator/Constraints/CustomerTeamsRequired.php b/src/Validator/Constraints/CustomerTeamsRequired.php
index e9404d259..7020893b3 100644
--- a/src/Validator/Constraints/CustomerTeamsRequired.php
+++ b/src/Validator/Constraints/CustomerTeamsRequired.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace App\Validator\Constraints;
diff --git a/src/Validator/Constraints/CustomerTeamsRequiredValidator.php b/src/Validator/Constraints/CustomerTeamsRequiredValidator.php
index 5a0efbfc0..2267cea0a 100644
--- a/src/Validator/Constraints/CustomerTeamsRequiredValidator.php
+++ b/src/Validator/Constraints/CustomerTeamsRequiredValidator.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace App\Validator\Constraints;
diff --git a/src/Validator/Constraints/UniqueActivityName.php b/src/Validator/Constraints/UniqueActivityName.php
index b52b86db3..0d3484fac 100644
--- a/src/Validator/Constraints/UniqueActivityName.php
+++ b/src/Validator/Constraints/UniqueActivityName.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace App\Validator\Constraints;
diff --git a/src/Validator/Constraints/UniqueActivityNameValidator.php b/src/Validator/Constraints/UniqueActivityNameValidator.php
index 1681efbce..52b94055c 100644
--- a/src/Validator/Constraints/UniqueActivityNameValidator.php
+++ b/src/Validator/Constraints/UniqueActivityNameValidator.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace App\Validator\Constraints;
diff --git a/src/Validator/Constraints/UniqueCustomerName.php b/src/Validator/Constraints/UniqueCustomerName.php
index 581aea935..64d995714 100644
--- a/src/Validator/Constraints/UniqueCustomerName.php
+++ b/src/Validator/Constraints/UniqueCustomerName.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace App\Validator\Constraints;
diff --git a/src/Validator/Constraints/UniqueCustomerNameValidator.php b/src/Validator/Constraints/UniqueCustomerNameValidator.php
index 79c52c731..99edbc9af 100644
--- a/src/Validator/Constraints/UniqueCustomerNameValidator.php
+++ b/src/Validator/Constraints/UniqueCustomerNameValidator.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace App\Validator\Constraints;
diff --git a/src/Validator/Constraints/UniqueProjectNameForCustomer.php b/src/Validator/Constraints/UniqueProjectNameForCustomer.php
index 31f19ec22..801b2ef43 100644
--- a/src/Validator/Constraints/UniqueProjectNameForCustomer.php
+++ b/src/Validator/Constraints/UniqueProjectNameForCustomer.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace App\Validator\Constraints;
diff --git a/src/Validator/Constraints/UniqueProjectNameForCustomerValidator.php b/src/Validator/Constraints/UniqueProjectNameForCustomerValidator.php
index daf4ea0f9..6ffe09926 100644
--- a/src/Validator/Constraints/UniqueProjectNameForCustomerValidator.php
+++ b/src/Validator/Constraints/UniqueProjectNameForCustomerValidator.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace App\Validator\Constraints;
diff --git a/src/Validator/Constraints/UniqueTeamName.php b/src/Validator/Constraints/UniqueTeamName.php
index 700cc5fe9..b2fcdfdfb 100644
--- a/src/Validator/Constraints/UniqueTeamName.php
+++ b/src/Validator/Constraints/UniqueTeamName.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace App\Validator\Constraints;
diff --git a/src/Validator/Constraints/UniqueTeamNameValidator.php b/src/Validator/Constraints/UniqueTeamNameValidator.php
index 7ba8537d2..905e06f10 100644
--- a/src/Validator/Constraints/UniqueTeamNameValidator.php
+++ b/src/Validator/Constraints/UniqueTeamNameValidator.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace App\Validator\Constraints;
diff --git a/src/Validator/Constraints/UniqueTicketSystemName.php b/src/Validator/Constraints/UniqueTicketSystemName.php
index 595ab9e71..b9f5e3b68 100644
--- a/src/Validator/Constraints/UniqueTicketSystemName.php
+++ b/src/Validator/Constraints/UniqueTicketSystemName.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace App\Validator\Constraints;
diff --git a/src/Validator/Constraints/UniqueTicketSystemNameValidator.php b/src/Validator/Constraints/UniqueTicketSystemNameValidator.php
index d80ddc25e..e652e02f7 100644
--- a/src/Validator/Constraints/UniqueTicketSystemNameValidator.php
+++ b/src/Validator/Constraints/UniqueTicketSystemNameValidator.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace App\Validator\Constraints;
diff --git a/src/Validator/Constraints/UniqueUserAbbr.php b/src/Validator/Constraints/UniqueUserAbbr.php
index b1832b9c5..f7de71b91 100644
--- a/src/Validator/Constraints/UniqueUserAbbr.php
+++ b/src/Validator/Constraints/UniqueUserAbbr.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace App\Validator\Constraints;
diff --git a/src/Validator/Constraints/UniqueUserAbbrValidator.php b/src/Validator/Constraints/UniqueUserAbbrValidator.php
index 0fe8d0ae4..0c59be261 100644
--- a/src/Validator/Constraints/UniqueUserAbbrValidator.php
+++ b/src/Validator/Constraints/UniqueUserAbbrValidator.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace App\Validator\Constraints;
diff --git a/src/Validator/Constraints/UniqueUsername.php b/src/Validator/Constraints/UniqueUsername.php
index 3a0401161..e985e3855 100644
--- a/src/Validator/Constraints/UniqueUsername.php
+++ b/src/Validator/Constraints/UniqueUsername.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace App\Validator\Constraints;
diff --git a/src/Validator/Constraints/UniqueUsernameValidator.php b/src/Validator/Constraints/UniqueUsernameValidator.php
index cdfa90c48..c78b814c8 100644
--- a/src/Validator/Constraints/UniqueUsernameValidator.php
+++ b/src/Validator/Constraints/UniqueUsernameValidator.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace App\Validator\Constraints;
diff --git a/src/Validator/Constraints/ValidUser.php b/src/Validator/Constraints/ValidUser.php
index f24fc834c..5139c3061 100644
--- a/src/Validator/Constraints/ValidUser.php
+++ b/src/Validator/Constraints/ValidUser.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace App\Validator\Constraints;
diff --git a/src/Validator/Constraints/ValidUserValidator.php b/src/Validator/Constraints/ValidUserValidator.php
index aa496dbaf..50ee1961e 100644
--- a/src/Validator/Constraints/ValidUserValidator.php
+++ b/src/Validator/Constraints/ValidUserValidator.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace App\Validator\Constraints;
diff --git a/src/ValueObject/PaginatedEntryCollection.php b/src/ValueObject/PaginatedEntryCollection.php
index f4c14c02b..26341e2a8 100644
--- a/src/ValueObject/PaginatedEntryCollection.php
+++ b/src/ValueObject/PaginatedEntryCollection.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace App\ValueObject;
diff --git a/tests/AbstractWebTestCase.php b/tests/AbstractWebTestCase.php
index bcb4537dd..68445aeed 100644
--- a/tests/AbstractWebTestCase.php
+++ b/tests/AbstractWebTestCase.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace Tests;
diff --git a/tests/Basic.php b/tests/Basic.php
index ab8e192e6..ec6089423 100644
--- a/tests/Basic.php
+++ b/tests/Basic.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace Tests;
diff --git a/tests/Command/TtSyncSubticketsCommandTest.php b/tests/Command/TtSyncSubticketsCommandTest.php
index de77357c4..690d1dfd3 100644
--- a/tests/Command/TtSyncSubticketsCommandTest.php
+++ b/tests/Command/TtSyncSubticketsCommandTest.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace Tests\Command;
diff --git a/tests/Controller/AdminControllerNegativeTest.php b/tests/Controller/AdminControllerNegativeTest.php
index 5594f4bdc..5539042cc 100644
--- a/tests/Controller/AdminControllerNegativeTest.php
+++ b/tests/Controller/AdminControllerNegativeTest.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace Tests\Controller;
diff --git a/tests/Controller/AdminControllerTest.php b/tests/Controller/AdminControllerTest.php
index 81fa50dcc..c8be83b6d 100644
--- a/tests/Controller/AdminControllerTest.php
+++ b/tests/Controller/AdminControllerTest.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace Tests\Controller;
diff --git a/tests/Controller/ApiSmokeTest.php b/tests/Controller/ApiSmokeTest.php
index 22c3daef9..ece82f6cb 100644
--- a/tests/Controller/ApiSmokeTest.php
+++ b/tests/Controller/ApiSmokeTest.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace Tests\Controller;
diff --git a/tests/Controller/AuthorizationSecurityTest.php b/tests/Controller/AuthorizationSecurityTest.php
index 8a276cf34..094e8e584 100644
--- a/tests/Controller/AuthorizationSecurityTest.php
+++ b/tests/Controller/AuthorizationSecurityTest.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace Tests\Controller;
diff --git a/tests/Controller/BasicAccessTest.php b/tests/Controller/BasicAccessTest.php
index e0911363a..7191c1137 100644
--- a/tests/Controller/BasicAccessTest.php
+++ b/tests/Controller/BasicAccessTest.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace Tests\Controller;
diff --git a/tests/Controller/ControllingControllerTest.php b/tests/Controller/ControllingControllerTest.php
index 7ecc47706..e1d057e4b 100644
--- a/tests/Controller/ControllingControllerTest.php
+++ b/tests/Controller/ControllingControllerTest.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace Tests\Controller;
diff --git a/tests/Controller/CrudControllerNegativeTest.php b/tests/Controller/CrudControllerNegativeTest.php
index 1e03f3717..d83ce81ce 100644
--- a/tests/Controller/CrudControllerNegativeTest.php
+++ b/tests/Controller/CrudControllerNegativeTest.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace Tests;
diff --git a/tests/Controller/CrudControllerTest.php b/tests/Controller/CrudControllerTest.php
index eaf6baeec..48e38ef53 100644
--- a/tests/Controller/CrudControllerTest.php
+++ b/tests/Controller/CrudControllerTest.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace Tests\Controller;
diff --git a/tests/Controller/DefaultControllerSummaryTest.php b/tests/Controller/DefaultControllerSummaryTest.php
index d8cc81d43..d187eee63 100644
--- a/tests/Controller/DefaultControllerSummaryTest.php
+++ b/tests/Controller/DefaultControllerSummaryTest.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace Tests\Controller;
diff --git a/tests/Controller/DefaultControllerTest.php b/tests/Controller/DefaultControllerTest.php
index 8e6b5b6aa..c924d4f21 100644
--- a/tests/Controller/DefaultControllerTest.php
+++ b/tests/Controller/DefaultControllerTest.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace Tests\Controller;
diff --git a/tests/Controller/InterpretationControllerTest.php b/tests/Controller/InterpretationControllerTest.php
index 185457931..d8486ba5b 100644
--- a/tests/Controller/InterpretationControllerTest.php
+++ b/tests/Controller/InterpretationControllerTest.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace Tests\Controller;
diff --git a/tests/Controller/SecurityControllerTest.php b/tests/Controller/SecurityControllerTest.php
index ce7a87974..f9a8c77d8 100644
--- a/tests/Controller/SecurityControllerTest.php
+++ b/tests/Controller/SecurityControllerTest.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace Tests\Controller;
diff --git a/tests/Controller/SettingsControllerTest.php b/tests/Controller/SettingsControllerTest.php
index df9fe7794..5e13f88fe 100644
--- a/tests/Controller/SettingsControllerTest.php
+++ b/tests/Controller/SettingsControllerTest.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace Tests\Controller;
diff --git a/tests/Controller/StatusControllerTest.php b/tests/Controller/StatusControllerTest.php
index 0a31317c0..296938438 100644
--- a/tests/Controller/StatusControllerTest.php
+++ b/tests/Controller/StatusControllerTest.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace Tests\Controller;
diff --git a/tests/Dto/EntrySaveDtoTest.php b/tests/Dto/EntrySaveDtoTest.php
index 7b6c85282..345d0a5d7 100644
--- a/tests/Dto/EntrySaveDtoTest.php
+++ b/tests/Dto/EntrySaveDtoTest.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace Tests\Dto;
diff --git a/tests/Entity/AccountDatabaseTest.php b/tests/Entity/AccountDatabaseTest.php
index 6a8b9fcd2..19b8ab73e 100644
--- a/tests/Entity/AccountDatabaseTest.php
+++ b/tests/Entity/AccountDatabaseTest.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace Tests\Entity;
diff --git a/tests/Entity/ActivityDatabaseTest.php b/tests/Entity/ActivityDatabaseTest.php
index d7a6d3b4c..44f2a4eb8 100644
--- a/tests/Entity/ActivityDatabaseTest.php
+++ b/tests/Entity/ActivityDatabaseTest.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace Tests\Entity;
diff --git a/tests/Entity/ActivityTest.php b/tests/Entity/ActivityTest.php
index cb4dfd917..427ed7ef8 100644
--- a/tests/Entity/ActivityTest.php
+++ b/tests/Entity/ActivityTest.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace Tests\Entity;
diff --git a/tests/Entity/CustomerDatabaseTest.php b/tests/Entity/CustomerDatabaseTest.php
index 3cb9c63cc..1067415da 100644
--- a/tests/Entity/CustomerDatabaseTest.php
+++ b/tests/Entity/CustomerDatabaseTest.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace Tests\Entity;
diff --git a/tests/Entity/EntryTest.php b/tests/Entity/EntryTest.php
index 212d85554..f36a33091 100644
--- a/tests/Entity/EntryTest.php
+++ b/tests/Entity/EntryTest.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace Tests\Entity;
diff --git a/tests/Entity/HolidayDatabaseTest.php b/tests/Entity/HolidayDatabaseTest.php
index 40da19ca3..6aa470b9b 100644
--- a/tests/Entity/HolidayDatabaseTest.php
+++ b/tests/Entity/HolidayDatabaseTest.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace Tests\Entity;
diff --git a/tests/Entity/PresetDatabaseTest.php b/tests/Entity/PresetDatabaseTest.php
index 7aface898..aeaba6ca5 100644
--- a/tests/Entity/PresetDatabaseTest.php
+++ b/tests/Entity/PresetDatabaseTest.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace Tests\Entity;
diff --git a/tests/Entity/ProjectDatabaseTest.php b/tests/Entity/ProjectDatabaseTest.php
index b55d1a7ee..765f4e02b 100644
--- a/tests/Entity/ProjectDatabaseTest.php
+++ b/tests/Entity/ProjectDatabaseTest.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace Tests\Entity;
diff --git a/tests/Entity/ProjectTest.php b/tests/Entity/ProjectTest.php
index 68a53e95f..e9f9091a5 100644
--- a/tests/Entity/ProjectTest.php
+++ b/tests/Entity/ProjectTest.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace Tests\Entity;
diff --git a/tests/Entity/TeamDatabaseTest.php b/tests/Entity/TeamDatabaseTest.php
index 621e17157..c75ee2533 100644
--- a/tests/Entity/TeamDatabaseTest.php
+++ b/tests/Entity/TeamDatabaseTest.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace Tests\Entity;
diff --git a/tests/Entity/TicketTest.php b/tests/Entity/TicketTest.php
index 5f05c8b99..0afade47b 100644
--- a/tests/Entity/TicketTest.php
+++ b/tests/Entity/TicketTest.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace Tests\Entity;
diff --git a/tests/Entity/UserDatabaseTest.php b/tests/Entity/UserDatabaseTest.php
index 1bf2aa776..acced037f 100644
--- a/tests/Entity/UserDatabaseTest.php
+++ b/tests/Entity/UserDatabaseTest.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace Tests\Entity;
diff --git a/tests/Entity/UserTicketsystemTest.php b/tests/Entity/UserTicketsystemTest.php
index 6479163c7..74db0eeb6 100644
--- a/tests/Entity/UserTicketsystemTest.php
+++ b/tests/Entity/UserTicketsystemTest.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace Tests\Entity;
diff --git a/tests/Extension/NrArrayTranslatorTest.php b/tests/Extension/NrArrayTranslatorTest.php
index c88b92450..c412ccbde 100644
--- a/tests/Extension/NrArrayTranslatorTest.php
+++ b/tests/Extension/NrArrayTranslatorTest.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace Tests\Extension;
diff --git a/tests/Extension/TwigCsvEscapingExtensionTest.php b/tests/Extension/TwigCsvEscapingExtensionTest.php
index 6ed4ebe31..2775deb55 100644
--- a/tests/Extension/TwigCsvEscapingExtensionTest.php
+++ b/tests/Extension/TwigCsvEscapingExtensionTest.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace Tests\Extension;
diff --git a/tests/Fixtures/TokenStub.php b/tests/Fixtures/TokenStub.php
index 6e74347dd..ac9752520 100644
--- a/tests/Fixtures/TokenStub.php
+++ b/tests/Fixtures/TokenStub.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace Tests\Fixtures;
diff --git a/tests/Helper/JiraOAuthApiTest.php b/tests/Helper/JiraOAuthApiTest.php
index 62f40c21d..1367faaf0 100644
--- a/tests/Helper/JiraOAuthApiTest.php
+++ b/tests/Helper/JiraOAuthApiTest.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace Tests\Integration\Jira;
diff --git a/tests/Helper/TimeHelperTest.php b/tests/Helper/TimeHelperTest.php
index e4a820e21..f81c13bd5 100644
--- a/tests/Helper/TimeHelperTest.php
+++ b/tests/Helper/TimeHelperTest.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace Tests\Service\Util;
diff --git a/tests/Model/BaseTest.php b/tests/Model/BaseTest.php
index 7e65620e1..b24152530 100644
--- a/tests/Model/BaseTest.php
+++ b/tests/Model/BaseTest.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace Tests\Model;
diff --git a/tests/Model/ResponseTest.php b/tests/Model/ResponseTest.php
index 87ab3eacd..2c438e6c4 100644
--- a/tests/Model/ResponseTest.php
+++ b/tests/Model/ResponseTest.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace Tests\Model;
diff --git a/tests/Performance/ExportActionPerformanceTest.php b/tests/Performance/ExportActionPerformanceTest.php
index 145af716f..50d7eea08 100644
--- a/tests/Performance/ExportActionPerformanceTest.php
+++ b/tests/Performance/ExportActionPerformanceTest.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace Tests\Performance;
diff --git a/tests/Performance/ExportPerformanceTest.php b/tests/Performance/ExportPerformanceTest.php
index b33070213..495882dcf 100644
--- a/tests/Performance/ExportPerformanceTest.php
+++ b/tests/Performance/ExportPerformanceTest.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace Tests\Performance;
diff --git a/tests/Performance/ExportWorkflowIntegrationTest.php b/tests/Performance/ExportWorkflowIntegrationTest.php
index 6e2dc055d..3def025a6 100644
--- a/tests/Performance/ExportWorkflowIntegrationTest.php
+++ b/tests/Performance/ExportWorkflowIntegrationTest.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace Tests\Performance;
diff --git a/tests/Performance/PerformanceBenchmarkRunner.php b/tests/Performance/PerformanceBenchmarkRunner.php
index 26b405c06..c06819e2a 100644
--- a/tests/Performance/PerformanceBenchmarkRunner.php
+++ b/tests/Performance/PerformanceBenchmarkRunner.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace Tests\Performance;
diff --git a/tests/Performance/PerformanceDashboard.php b/tests/Performance/PerformanceDashboard.php
index 62dc0eeb4..8c7f27753 100644
--- a/tests/Performance/PerformanceDashboard.php
+++ b/tests/Performance/PerformanceDashboard.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace Tests\Performance;
diff --git a/tests/Repository/EntryRepositoryIntegrationTest.php b/tests/Repository/EntryRepositoryIntegrationTest.php
index df0571120..35d962d8b 100644
--- a/tests/Repository/EntryRepositoryIntegrationTest.php
+++ b/tests/Repository/EntryRepositoryIntegrationTest.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace Tests\Repository;
diff --git a/tests/Repository/EntryRepositoryTest.php b/tests/Repository/EntryRepositoryTest.php
index 8ade32867..1c8a289b6 100644
--- a/tests/Repository/EntryRepositoryTest.php
+++ b/tests/Repository/EntryRepositoryTest.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace Tests\Repository;
diff --git a/tests/Response/ErrorResponseTest.php b/tests/Response/ErrorResponseTest.php
index 82d28267f..729f485b3 100644
--- a/tests/Response/ErrorResponseTest.php
+++ b/tests/Response/ErrorResponseTest.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace Tests\Response;
diff --git a/tests/Security/LdapAuthenticatorTest.php b/tests/Security/LdapAuthenticatorTest.php
index 52bfcd67c..7e85c8e5b 100644
--- a/tests/Security/LdapAuthenticatorTest.php
+++ b/tests/Security/LdapAuthenticatorTest.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace Tests\Security;
diff --git a/tests/Service/ExportServiceTest.php b/tests/Service/ExportServiceTest.php
index 9219cfd32..ed09b69e7 100644
--- a/tests/Service/ExportServiceTest.php
+++ b/tests/Service/ExportServiceTest.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace Tests\Service;
diff --git a/tests/Service/Ldap/LdapClientServiceTest.php b/tests/Service/Ldap/LdapClientServiceTest.php
index 001888330..703fd7fdc 100644
--- a/tests/Service/Ldap/LdapClientServiceTest.php
+++ b/tests/Service/Ldap/LdapClientServiceTest.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace Tests\Service\Ldap;
diff --git a/tests/Service/LocalizationServiceTest.php b/tests/Service/LocalizationServiceTest.php
index 38770afe4..a4a4d79ed 100644
--- a/tests/Service/LocalizationServiceTest.php
+++ b/tests/Service/LocalizationServiceTest.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace Tests\Service;
diff --git a/tests/Service/SubticketSyncServiceTest.php b/tests/Service/SubticketSyncServiceTest.php
index 318cf92c7..5ee8b366e 100644
--- a/tests/Service/SubticketSyncServiceTest.php
+++ b/tests/Service/SubticketSyncServiceTest.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace Tests\Service;
diff --git a/tests/Service/SystemClockTest.php b/tests/Service/SystemClockTest.php
index 9ddbeb1a4..0261e59f5 100644
--- a/tests/Service/SystemClockTest.php
+++ b/tests/Service/SystemClockTest.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace Tests\Service;
diff --git a/tests/Service/TestClock.php b/tests/Service/TestClock.php
index 5bad37d0b..2e0711d5f 100644
--- a/tests/Service/TestClock.php
+++ b/tests/Service/TestClock.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace Tests\Service; // Note: Namespace changed to Tests
diff --git a/tests/Service/Util/TicketServiceTest.php b/tests/Service/Util/TicketServiceTest.php
index b8e4a74f7..b0d63cdef 100644
--- a/tests/Service/Util/TicketServiceTest.php
+++ b/tests/Service/Util/TicketServiceTest.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace Tests\Service\Util;
diff --git a/tests/Service/Util/TimeCalculationServiceTest.php b/tests/Service/Util/TimeCalculationServiceTest.php
index 244a75a7d..99f3293e0 100644
--- a/tests/Service/Util/TimeCalculationServiceTest.php
+++ b/tests/Service/Util/TimeCalculationServiceTest.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace Tests\Service\Util;
diff --git a/tests/Traits/AuthenticationTestTrait.php b/tests/Traits/AuthenticationTestTrait.php
index 38e369afb..0af629ab1 100644
--- a/tests/Traits/AuthenticationTestTrait.php
+++ b/tests/Traits/AuthenticationTestTrait.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace Tests\Traits;
diff --git a/tests/Traits/DatabaseTestTrait.php b/tests/Traits/DatabaseTestTrait.php
index b6a16154f..bde6b6169 100644
--- a/tests/Traits/DatabaseTestTrait.php
+++ b/tests/Traits/DatabaseTestTrait.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace Tests\Traits;
diff --git a/tests/Traits/HttpClientTrait.php b/tests/Traits/HttpClientTrait.php
index e4dc3e9a4..dbdacfe2d 100644
--- a/tests/Traits/HttpClientTrait.php
+++ b/tests/Traits/HttpClientTrait.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace Tests\Traits;
diff --git a/tests/Traits/HttpRequestTestTrait.php b/tests/Traits/HttpRequestTestTrait.php
index 8b483d65e..b1057e354 100644
--- a/tests/Traits/HttpRequestTestTrait.php
+++ b/tests/Traits/HttpRequestTestTrait.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace Tests\Traits;
diff --git a/tests/Traits/JsonAssertionsTrait.php b/tests/Traits/JsonAssertionsTrait.php
index 82131f367..4296ac9d4 100644
--- a/tests/Traits/JsonAssertionsTrait.php
+++ b/tests/Traits/JsonAssertionsTrait.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace Tests\Traits;
diff --git a/tests/Traits/TestDataTrait.php b/tests/Traits/TestDataTrait.php
index 2a58f0d2a..037778a4b 100644
--- a/tests/Traits/TestDataTrait.php
+++ b/tests/Traits/TestDataTrait.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace Tests\Traits;
diff --git a/tests/Util/PhpSpreadsheet/LOReadFilterTest.php b/tests/Util/PhpSpreadsheet/LOReadFilterTest.php
index 063f89f45..379acec2a 100644
--- a/tests/Util/PhpSpreadsheet/LOReadFilterTest.php
+++ b/tests/Util/PhpSpreadsheet/LOReadFilterTest.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 namespace Tests\Util\PhpSpreadsheet;
diff --git a/tests/bootstrap.php b/tests/bootstrap.php
index fd71a99dd..52140a1d4 100644
--- a/tests/bootstrap.php
+++ b/tests/bootstrap.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 use Symfony\Component\Dotenv\Dotenv;
diff --git a/tests/parallel-bootstrap.php b/tests/parallel-bootstrap.php
index e6124893f..66146ac9f 100644
--- a/tests/parallel-bootstrap.php
+++ b/tests/parallel-bootstrap.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 use Symfony\Component\Dotenv\Dotenv;
diff --git a/tests/tools/analyze-coverage.php b/tests/tools/analyze-coverage.php
index c83c21f0b..e532f9724 100644
--- a/tests/tools/analyze-coverage.php
+++ b/tests/tools/analyze-coverage.php
@@ -1,5 +1,10 @@
 <?php
 
+/*
+ * Copyright (c) 2025-2026 Netresearch DTT GmbH
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 declare(strict_types=1);
 
 /**