context.php: add PDO and database to context

inc/context.php

@@ -2,6 +2,7 @@
 namespace Vichan;
 
 use Vichan\Data\Driver\CacheDriver;
+use Vichan\Data\ReportQueries;
 
 defined('TINYBOARD') or exit;
 
@@ -33,6 +34,12 @@ function build_context(array $config): Context {
 		CacheDriver::class => function($c) {
 			// Use the global for backwards compatibility.
 			return \cache::getCache();
+		},
+		\PDO::class => function($c) {
+			global $pdo;
+			// Ensure the PDO is initialized.
+			sql_open();
+			return $pdo;
 		}
 	]);
 }