Composer configuration for directory root

Question

I am using composer for the first time, however the configuration confuses me a lot.

Project structure

- myproject
    - composer/
        - composer.phar
    - dist/                                   <-- Directory root
        - index.php
    - server/                                 <-- my server code (php)
        - Controller/
            - TestController.php
        - Test/
            - Advanced/
                 - AdvancedTest.php
            - Standard/
                 - StandardTest.php
    - src/                                    <-- My client source files (typescript, sass, ...)
    - vendor/                                 <-- Directory created by composer
    - composer.json

Examples

TestController.php:

<?php
declare(strict_types=1);

namespace Controller;

class TestController
{
    public function __construct()
    {
        echo "Test controller initialized.<br>";
    }
}

AdvancedTest.php:

<?php
declare(strict_types=1);

namespace Test\Advanced;

class AdvancedTest
{
    public function __construct(string $title)
    {
        echo "Advanced test: " . $title . "<br>";
    }
}

StandardTest.php:

<?php
declare(strict_types=1);

namespace Test\Standard;

class StandardTest
{
    public function __construct(string $title)
    {
        echo "Basic test: " . $title . "<br>";
    }
}

index.php:

<?php
include_once '../vendor/autoload.php';

use Controller\TestController;
use Test\Advanced\AdvancedTest;
use Test\Standard\StandardTest;

$standardTest = new StandardTest("HelloWorld");
$advancedTest = new AdvancedTest("HelloWorld");
$testController = new TestController();

This is my composer.json:

{
    "autoload": {
        "psr-4": {
            "Controller\\": "server",
            "Test\\": "server"
        }
    }
}

When I run composer, it throws

Class Test\Advanced\AdvancedTest located in C:/project1/web/server\Test\Adanced\AdvancedTest.php does not comply with psr-4 autoloading standard. Skipping.

Class Test\Standard\StandardTest located in C:/project1/web/server\Test\Standard\StandardTest.php does not comply with psr-4 autoloading standard. Skipping.

Class Controller\TestController located in C:/project1/web/server\Controller\TestController.php does not comply with psr-4 autoloading standard. Skipping.

So PHP cannot find the classes that are used in index.php.

What I want to do:

• dist/index.php in the directory root is my starting point. I need the autoload script there.
• I want to autoload 1 and 2 level classes (e.g. Test 2 level, Controller 1 level) in my project.

I did not found a good description yet, how to archieve this with composer.