[cli] don't exit until after we have committed or rolled back the db

core/cli_app.php

@@ -12,6 +12,7 @@ class CliApp extends \Symfony\Component\Console\Application
     public function __construct()
     {
         parent::__construct('Shimmie', VERSION);
+        $this->setAutoExit(false);
     }
 
     protected function getDefaultInputDefinition(): InputDefinition

index.php

@@ -84,7 +84,9 @@ try {
         ob_implicit_flush(true);
         $app = new CliApp();
         send_event(new CliGenEvent($app));
-        $app->run();
+        if($app->run() !== 0) {
+            throw new \Exception("CLI command failed");
+        }
     } else {
         send_event(new PageRequestEvent($_SERVER['REQUEST_METHOD'], _get_query()));
         $page->display();