Add GPLv2-only license and per-file headers

Confirmed with the maintainer as v2-only rather than v2-or-later. LICENSE is
the official text from gnu.org. Every file under src/ and tests/ carries the
matching notice.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

1 files changed, 20 insertions, 1 deletions

diff --git a/src/mainwindow.cpp b/src/mainwindow.cpp
index c24a48f..2a484fb 100644
--- a/src/mainwindow.cpp
+++ b/src/mainwindow.cpp
@@ -1,3 +1,21 @@
+/*
+ * qtmaildir - a Qt6 mail client for notmuch-indexed Maildirs
+ * 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.
+ */
+
 #include "mainwindow.h"
 
 #include <QComboBox>
@@ -21,6 +39,7 @@
 #include "mimeparser.h"
 #include "notmuchworker.h"
 #include "threadlistmodel.h"
+#include "version.h"
 
 QStringList MainWindow::registeredActionNames()
 {
@@ -184,7 +203,7 @@ void MainWindow::buildUi()
     setCentralWidget(central);
 
     resize(1200, 800);
-    setWindowTitle(tr("qtmaildir"));
+    setWindowTitle(QStringLiteral("qtmaildir %1").arg(QTMAILDIR_VERSION));
 }
 
 void MainWindow::registerActions()