wire postgres session repo, migrations, seed, and dev serve

backend/bin/seed

@@ -0,0 +1,40 @@
+#!/usr/bin/env php
+<?php
+
+use App\Auth\PasswordHasher;
+use App\Shared\ValueObject\EmailAddress;
+use App\User\CreateUserDto;
+use App\User\UserRepository;
+
+(static function (): void {
+    $root = dirname(__DIR__);
+
+    require $root . '/vendor/autoload.php';
+
+    $dotenv = Dotenv\Dotenv::createImmutable($root);
+    $dotenv->safeLoad();
+
+    require $root . '/config/database.php';
+
+    $container = require $root . '/config/container.php';
+
+    $userRepo = $container->get(UserRepository::class);
+    $hasher = $container->get(PasswordHasher::class);
+
+    $seedEmail = 'admin@rabbigerzi.test';
+    $seedPassword = 'password';
+
+    $email = new EmailAddress($seedEmail);
+
+    if ($userRepo->findByEmail($email) !== null) {
+        echo "Seed user {$seedEmail} already exists, skipping.\n";
+        exit(0);
+    }
+
+    $userRepo->create(new CreateUserDto(
+        email: $email,
+        passwordHash: $hasher->hash($seedPassword),
+    ));
+
+    echo "Created seed user {$seedEmail} / {$seedPassword}\n";
+})();