Improve static analysis by adding type hints for $app in artisan and public/index.php (laravel#6531)

* feat: add type hints for $app in artisan and public/index.php

Added PHPDoc type hints for the $app variable to improve static analysis
support in PHPStan and PHPStorm. This prevents tools from incorrectly
flagging the variable and enhances developer experience.

No functional changes; only improves code readability and IDE support.

* Update artisan

* Update index.php

---------

Co-authored-by: Taylor Otwell <[email protected]>

Author: AJenbo

artisan

@@ -1,6 +1,7 @@
 #!/usr/bin/env php
 <?php
 
+use Illuminate\Foundation\Application;
 use Symfony\Component\Console\Input\ArgvInput;
 
 define('LARAVEL_START', microtime(true));
@@ -9,7 +10,9 @@ define('LARAVEL_START', microtime(true));
 require __DIR__.'/vendor/autoload.php';
 
 // Bootstrap Laravel and handle the command...
-$status = (require_once __DIR__.'/bootstrap/app.php')
-    ->handleCommand(new ArgvInput);
+/** @var Application $app */
+$app = require_once __DIR__.'/bootstrap/app.php';
+
+$status = $app->handleCommand(new ArgvInput);
 
 exit($status);

public/index.php

@@ -1,5 +1,6 @@
 <?php
 
+use Illuminate\Foundation\Application;
 use Illuminate\Http\Request;
 
 define('LARAVEL_START', microtime(true));
@@ -13,5 +14,7 @@
 require __DIR__.'/../vendor/autoload.php';
 
 // Bootstrap Laravel and handle the request...
-(require_once __DIR__.'/../bootstrap/app.php')
-    ->handleRequest(Request::capture());
+/** @var Application $app */
+$app = require_once __DIR__.'/../bootstrap/app.php';
+
+$app->handleRequest(Request::capture());