feat(vikon): extract API URL from hardcoded to integration_credentials

- Rename ViconApiToken → ViconApiConfig with token() and apiUrl()
- Replace 9 hardcoded db-nica.ru URLs with dynamic apiUrl()
- Payload now stores both token and api_url with fallback

app/Services/Vicon/ViconApiConfig.php

@@ -0,0 +1,32 @@
+<?php
+
+namespace App\Services\Vicon;
+
+use App\Containers\Dashboard\Tasks\IntegrationCredentials\GetIntegrationCredentialTask;
+
+class ViconApiConfig
+{
+    private const FALLBACK_API_URL = 'https://db-nica.ru/api/v1';
+
+    public function __construct(
+        private readonly GetIntegrationCredentialTask $getCredential,
+    ) {}
+
+    public function token(): string
+    {
+        $credential = $this->getCredential->run('vikon_api');
+
+        if (!$credential || empty($credential->payload['token'])) {
+            throw new \RuntimeException('VIKON API token not configured. Add it in /dashboard/integration-credentials.');
+        }
+
+        return $credential->payload['token'];
+    }
+
+    public function apiUrl(): string
+    {
+        $credential = $this->getCredential->run('vikon_api');
+
+        return $credential->payload['api_url'] ?? self::FALLBACK_API_URL;
+    }
+}