Quality of life improvements all around.

src/CommandBackup.php

@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 namespace App;
 
 use Symfony\Component\Console\Attribute\AsCommand;
@@ -28,6 +30,18 @@ class CommandBackup extends Command
         );
     }
 
+    /**
+     * Start the backup process.
+     *
+     * 1. Read the configuration file.
+     * 2. For each configured backup entry
+     *    1. Get the size of the source
+     *    2. Get the size of the destination
+     *    3. Perform the backup
+     *    4. Get the new size of the destination
+     *    5. Send push notifications.
+     * 3. Report final success
+     */
     protected function execute(InputInterface $input, OutputInterface $output): int
     {
         $sio = new SymfonyStyle($input, $output);