feat: integrate PHPStan, Rector and Pint code quality tools (#13)

* feat: integrate PHPStan, Rector and Pint code quality tools

- Add larastan, rector, and rector-laravel dev dependencies
- Configure PHPStan at max level with Larastan extension
- Configure Rector with Laravel sets and code quality rules
- Configure Pint with strict rules (final_class, strict_types)
- Add composer scripts: lint, test:lint, test:types, test:unit
- Add GitHub Actions workflow for CI on push/PR
- Apply code style fixes across all files

* docs: add code quality section to README

config/app.php

@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 return [
 
     /*

config/auth.php

@@ -1,5 +1,9 @@
 <?php
 
+declare(strict_types=1);
+
+use App\Models\User;
+
 return [
 
     /*
@@ -62,7 +66,7 @@ return [
     'providers' => [
         'users' => [
             'driver' => 'eloquent',
-            'model' => env('AUTH_MODEL', App\Models\User::class),
+            'model' => env('AUTH_MODEL', User::class),
         ],
 
         // 'users' => [

config/cache.php

@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 use Illuminate\Support\Str;
 
 return [

config/cors.php

@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 return [
 
     /*

config/database.php

@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 use Illuminate\Support\Str;
 
 return [
@@ -59,7 +61,7 @@ return [
             'strict' => true,
             'engine' => null,
             'options' => extension_loaded('pdo_mysql') ? array_filter([
-                (PHP_VERSION_ID >= 80500 ? \Pdo\Mysql::ATTR_SSL_CA : \PDO::MYSQL_ATTR_SSL_CA) => env('MYSQL_ATTR_SSL_CA'),
+                (PHP_VERSION_ID >= 80500 ? \Pdo\Mysql::ATTR_SSL_CA : PDO::MYSQL_ATTR_SSL_CA) => env('MYSQL_ATTR_SSL_CA'),
             ]) : [],
         ],
 
@@ -79,7 +81,7 @@ return [
             'strict' => true,
             'engine' => null,
             'options' => extension_loaded('pdo_mysql') ? array_filter([
-                (PHP_VERSION_ID >= 80500 ? \Pdo\Mysql::ATTR_SSL_CA : \PDO::MYSQL_ATTR_SSL_CA) => env('MYSQL_ATTR_SSL_CA'),
+                (PHP_VERSION_ID >= 80500 ? \Pdo\Mysql::ATTR_SSL_CA : PDO::MYSQL_ATTR_SSL_CA) => env('MYSQL_ATTR_SSL_CA'),
             ]) : [],
         ],
 

config/filesystems.php

@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 return [
 
     /*

config/logging.php

@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 use Monolog\Handler\NullHandler;
 use Monolog\Handler\StreamHandler;
 use Monolog\Handler\SyslogUdpHandler;

config/mail.php

@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 return [
 
     /*

config/queue.php

@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 return [
 
     /*

config/sanctum.php

@@ -1,5 +1,10 @@
 <?php
 
+declare(strict_types=1);
+
+use Illuminate\Cookie\Middleware\EncryptCookies;
+use Illuminate\Foundation\Http\Middleware\ValidateCsrfToken;
+use Laravel\Sanctum\Http\Middleware\AuthenticateSession;
 use Laravel\Sanctum\Sanctum;
 
 return [
@@ -15,7 +20,7 @@ return [
     |
     */
 
-    'stateful' => explode(',', env('SANCTUM_STATEFUL_DOMAINS', sprintf(
+    'stateful' => explode(',', (string) env('SANCTUM_STATEFUL_DOMAINS', sprintf(
         '%s%s',
         'localhost,localhost:3000,127.0.0.1,127.0.0.1:8000,::1',
         Sanctum::currentApplicationUrlWithPort(),
@@ -76,9 +81,9 @@ return [
     */
 
     'middleware' => [
-        'authenticate_session' => Laravel\Sanctum\Http\Middleware\AuthenticateSession::class,
-        'encrypt_cookies' => Illuminate\Cookie\Middleware\EncryptCookies::class,
-        'validate_csrf_token' => Illuminate\Foundation\Http\Middleware\ValidateCsrfToken::class,
+        'authenticate_session' => AuthenticateSession::class,
+        'encrypt_cookies' => EncryptCookies::class,
+        'validate_csrf_token' => ValidateCsrfToken::class,
     ],
 
 ];

config/scramble.php

@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 use Dedoc\Scramble\Http\Middleware\RestrictedDocsAccess;
 
 return [

config/services.php

@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 return [
 
     /*

config/session.php

@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 use Illuminate\Support\Str;
 
 return [