feat(api): Improve OpenAPI spec and add rate limit handling for Hetzner

- Add 429 response with Retry-After header for Hetzner server creation
- Create RateLimitException for proper rate limit error handling
- Rename cloud_provider_token_id to cloud_provider_token_uuid with deprecation
- Fix prices array schema in server-types endpoint with proper items definition
- Add explicit default: true to autogenerate_domain properties
- Add timeout and retry options to Docker install curl commands
- Fix race condition in deployment status update using atomic query

app/Exceptions/RateLimitException.php

@@ -0,0 +1,15 @@
+<?php
+
+namespace App\Exceptions;
+
+use Exception;
+
+class RateLimitException extends Exception
+{
+    public function __construct(
+        string $message = 'Rate limit exceeded.',
+        public readonly ?int $retryAfter = null
+    ) {
+        parent::__construct($message);
+    }
+}