chore(license): Phase B follow-on — relicense 3 scripts/ source files from Apache 2.0 to EUPL-1.2

Missed by Phase B (d600f6ed) which swept src/ headers but not scripts/ headers.
All 3 follow the Phase B precedent pattern:

  - scripts/check-attack-surface.js (the inst_084 validator hook itself)
  - scripts/sync-prod-audit-logs.js
  - scripts/migrate-to-schema-v3.js

Two header formats encountered:
  - Standard Apache 2.0 JS block header (first two files): full block swap to
    EUPL-1.2 equivalent with Licence/British spelling and EC canonical URL.
  - Brief JSDoc-style reference (migrate-to-schema-v3.js): short-form swap
    with Licence reference + URL line.

Other scripts/ files with Apache text references NOT in scope here:
  - scripts/relicense-apache-to-eupl.js (DATA: Apache patterns are search
    targets for the relicense tool itself)
  - scripts/fix-markdown-licences.js (DATA: Apache regex patterns for a
    migration script's find-and-replace)
  - scripts/migrate-licence-to-cc-by-4.js (DATA: Apache source patterns
    for a different migration workflow)
  - scripts/upload-document.js (DATA: Apache-2.0 is a valid SPDX tag for
    uploadable documents; retained as valid metadata option)

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

scripts/check-attack-surface.js

@@ -3,17 +3,17 @@
 /*
  * Copyright 2025 John G Stroh
  *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
+ * Licensed under the European Union Public Licence, Version 1.2 (EUPL-1.2);
+ * you may not use this file except in compliance with the Licence.
  *
- *     http://www.apache.org/licenses/LICENSE-2.0
+ * You may obtain a copy of the Licence at:
+ *     https://interoperable-europe.ec.europa.eu/collection/eupl/eupl-text-eupl-12
  *
  * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
+ * distributed under the Licence is distributed on an "AS IS" basis,
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
+ * See the Licence for the specific language governing permissions and
+ * limitations under the Licence.
  */
 
 /**

scripts/migrate-to-schema-v3.js

@@ -7,7 +7,8 @@
  * - Adds v3.0: securityClassification
  *
  * Copyright (c) 2025 John G Stroh. All rights reserved.
- * Licensed under the Apache License, Version 2.0
+ * Licensed under the European Union Public Licence, Version 1.2 (EUPL-1.2)
+ * https://interoperable-europe.ec.europa.eu/collection/eupl/eupl-text-eupl-12
  */
 
 const fs = require('fs');

scripts/sync-prod-audit-logs.js

@@ -3,17 +3,17 @@
 /*
  * Copyright 2025 John G Stroh
  *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
+ * Licensed under the European Union Public Licence, Version 1.2 (EUPL-1.2);
+ * you may not use this file except in compliance with the Licence.
  *
- *     http://www.apache.org/licenses/LICENSE-2.0
+ * You may obtain a copy of the Licence at:
+ *     https://interoperable-europe.ec.europa.eu/collection/eupl/eupl-text-eupl-12
  *
  * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
+ * distributed under the Licence is distributed on an "AS IS" basis,
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
+ * See the Licence for the specific language governing permissions and
+ * limitations under the Licence.
  */
 
 /**