chore: GPLv2-only license, docs and source headers

1 files changed, 16 insertions, 0 deletions

diff --git a/deckit/config.py b/deckit/config.py
index 151207b..aac5ad9 100644
--- a/deckit/config.py
+++ b/deckit/config.py
@@ -1,3 +1,19 @@
+# deck-it - configuration loading and validation
+# Copyright (C) 2026 Danilo M. <danix@danix.xyz>
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License version 2 as
+# published by the Free Software Foundation.
+#
+# 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 General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License along
+# with this program; if not, write to the Free Software Foundation, Inc.,
+# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+
 """Configuration loading and validation for deck-it."""
 
 import os