fix(composer): Fix psr-4 invalid namespace

[vincentmary]

Fix PSR-4 test namespace missing trailing backslash in composer.json

Problem

The autoload-dev section of composer.json declared the test namespace without the required trailing namespace separator:

  "autoload-dev": {                                                                                                                                                                                                
      "psr-4": {                                                                                                                                                                                                   
          "Readdle\\AppStoreServerAPI\\Tests": "tests/"                                                                                                                                                            
      }                                                                                                                                                                                                            
  }

According to the PSR-4 specification and Composer's implementation, all namespace prefixes must end with a backslash (). Without it, Composer throws a fatal error when generating the autoloader:

  In ClassLoader.php line 305:
  A non-empty PSR-4 prefix must end with a namespace separator.

This made it impossible to run composer install (or composer dump-autoload) successfully, completely breaking the test suite bootstrap.

Fix

Added the missing trailing backslash to the namespace prefix:

  "autoload-dev": {
      "psr-4": {
          "Readdle\\AppStoreServerAPI\\Tests\\": "tests/"
      }
  }

Impact

Without this fix, vendor/autoload.php was never generated, causing all PHPUnit tests to fail at the bootstrap stage regardless of their content.

[pkotets]

Fix PSR-4 test namespace missing trailing backslash in composer.json

Indeed. Thank you for the fix!