update copyright statements

Author: Butterroach

app.py

@@ -1,7 +1,7 @@
 """
 Lost: a hosts file manager for Linux
 
-Copyright (C) 2025 Butterroach
+Copyright (C) 2025-2026 Butterroach
 
 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by

test_hosts_validation.py

@@ -1,3 +1,22 @@
+"""
+Lost: a hosts file manager for Linux
+
+Copyright (C) 2025-2026 Butterroach
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU 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 General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program.  If not, see <https://www.gnu.org/licenses/>.
+"""
+
 from validateHosts import validateHostsFile
 import requests
 

validateHosts.py

@@ -1,3 +1,22 @@
+"""
+Lost: a hosts file manager for Linux
+
+Copyright (C) 2025-2026 Butterroach
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU 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 General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program.  If not, see <https://www.gnu.org/licenses/>.
+"""
+
 import ipaddress
 from urllib.parse import urlparse
 from typing import Tuple, Optional, List