add copyright information

README.md

@@ -119,6 +119,10 @@ automated the document sanitization routine (hint: not quite!), so I
 figured it was important to realize that dream and complete the work
 so that I didn't have to sit there manually copying files around.
 
+# Copyright
+
+[AGPLv3](LICENSE).
+
 # Design
 
 ## Manual process

processor.py

 #!/usr/bin/python3
 
+# Copyright (C) 2021 Antoine Beaupré <anarcat@debian.org>
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as
+# published by the Free Software Foundation, either version 3 of the
+# License, or (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
 """this script will:
 
  1. periodically check a Nextcloud (WebDAV?) folder (called