refactor: apply code quality level 61 for Rector

rector.php

@@ -202,4 +202,4 @@
         // keep '\\' prefix string on string '\Foo\Bar'
         StringClassNameToClassConstantRector::SHOULD_KEEP_PRE_SLASH => true,
     ])
-    ->withCodeQualityLevel(58);
+    ->withCodeQualityLevel(61);

system/Database/MigrationRunner.php

@@ -47,7 +47,7 @@ class MigrationRunner
      *
      * @var string|null
      */
-    protected $namespace;
+    protected $namespace = APP_NAMESPACE;
 
     /**
      * The database Group to migrate.
@@ -136,8 +136,6 @@ public function __construct(MigrationsConfig $config, $db = null)
         $this->enabled = $config->enabled ?? false;
         $this->table   = $config->table ?? 'migrations';
 
-        $this->namespace = APP_NAMESPACE;
-
         // Even if a DB connection is passed, since it is a test,
         // it is assumed to use the default group name
         $this->group = is_string($db) ? $db : config(Database::class)->defaultGroup;

system/Pager/PagerRenderer.php

@@ -29,9 +29,12 @@ class PagerRenderer
     /**
      * First page number in the set of links to be displayed.
      *
+     * `first` and `last` will be updated by `setSurroundCount()`.
+     * You must call `setSurroundCount()` after instantiation.
+     *
      * @var int
      */
-    protected $first;
+    protected $first = 1;
 
     /**
      * Last page number in the set of links to be displayed.
@@ -102,10 +105,7 @@ class PagerRenderer
      */
     public function __construct(array $details)
     {
-        // `first` and `last` will be updated by `setSurroundCount()`.
-        // You must call `setSurroundCount()` after instantiation.
-        $this->first = 1;
-        $this->last  = $details['pageCount'];
+        $this->last = $details['pageCount'];
 
         $this->current      = $details['currentPage'];
         $this->total        = $details['total'];