Store to move back to normal tex files

src/header.sty

@@ -0,0 +1,12 @@
+%%
+%% Copyright (C) 2026 Janis Hutz
+%%
+%% This file may be distributed and/or modified under the
+%% conditions of the LaTeX Project Public License, either
+%% version 1.3 of this license or (at your option) any later
+%% version. The latest version of this license is in:
+%% http://www.latex-project.org/lppl.txt
+%% and version 1.3c or later is part of all distributions of
+%% LaTeX version 2008-05-04 or later.
+
+\NeedsTeXFormat{LaTeX2e}