Move copyright notice to top of C files

Author: benoitc

c_src/py_callback.c

@@ -1,8 +1,23 @@
+/*
+ * Copyright 2026 Benoit Chesneau
+ *
+ * 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
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License 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.
+ */
+
 /**
  * @file py_callback.c
  * @brief Erlang callback support and asyncio integration
  * @author Benoit Chesneau
- * @copyright 2026 Benoit Chesneau. Licensed under Apache License 2.0.
  *
  * @ingroup cb
  *
@@ -68,22 +83,6 @@
  * @note This file is included from py_nif.c (single compilation unit)
  */
 
-/*
- * Copyright 2026 Benoit Chesneau
- *
- * 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
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License 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.
- */
-
 /* ============================================================================
  * Suspended state management
  * ============================================================================ */

c_src/py_convert.c

@@ -1,8 +1,23 @@
+/*
+ * Copyright 2026 Benoit Chesneau
+ *
+ * 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
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License 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.
+ */
+
 /**
  * @file py_convert.c
  * @brief Bidirectional type conversion between Python and Erlang
  * @author Benoit Chesneau
- * @copyright 2026 Benoit Chesneau. Licensed under Apache License 2.0.
  *
  * @ingroup convert
  *
@@ -31,22 +46,6 @@
  * @note This file is included from py_nif.c (single compilation unit)
  */
 
-/*
- * Copyright 2026 Benoit Chesneau
- *
- * 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
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License 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.
- */
-
 /* ============================================================================
  * Python to Erlang Conversion
  * ============================================================================ */

c_src/py_exec.c

@@ -1,8 +1,23 @@
+/*
+ * Copyright 2026 Benoit Chesneau
+ *
+ * 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
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License 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.
+ */
+
 /**
  * @file py_exec.c
  * @brief Python execution engine and GIL management
  * @author Benoit Chesneau
- * @copyright 2026 Benoit Chesneau. Licensed under Apache License 2.0.
  *
  * @ingroup exec
  *
@@ -53,22 +68,6 @@
  * @note This file is included from py_nif.c (single compilation unit)
  */
 
-/*
- * Copyright 2026 Benoit Chesneau
- *
- * 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
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License 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.
- */
-
 /* ============================================================================
  * Timeout Support
  *

c_src/py_nif.h

@@ -1,8 +1,23 @@
+/*
+ * Copyright 2026 Benoit Chesneau
+ *
+ * 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
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License 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.
+ */
+
 /**
  * @file py_nif.h
  * @brief Shared header for the Python-Erlang NIF integration
  * @author Benoit Chesneau
- * @copyright 2026 Benoit Chesneau. Licensed under Apache License 2.0.
  *
  * @mainpage Python-Erlang NIF Integration
  *
@@ -56,22 +71,6 @@
  * - Proper cleanup in resource destructors
  */
 
-/*
- * Copyright 2026 Benoit Chesneau
- *
- * 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
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License 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.
- */
-
 #ifndef PY_NIF_H
 #define PY_NIF_H