GG.deals clone: CodeIgniter 4 + MongoDB game price tracker

- Full gg.deals-style UI: deal feed with filters, game pages with price
  history charts, rankings, vouchers, news, prepaids, subscriptions,
  bundles, franchises, wishlist, API docs
- Real data crawlers:
  * gg:crawl (Steam Store API + GOG Catalog + Epic free games)
  * gg:catalog (252K game slugs from gg.deals sitemaps)
  * gg:ggdeals (per-game prices via FlareSolverr session, JSON-LD parsing)
  * gg:seed / gg:crawl-covers (demo seed + Steam CDN cover art)
- 24/7 self-updating scheduler (scripts/scheduler_loop.php, lockfile-protected)
- Tailwind v4 dark/light theme, Alpine.js, Chart.js

app/Config/Format.php

@@ -0,0 +1,73 @@
+<?php
+
+namespace Config;
+
+use CodeIgniter\Config\BaseConfig;
+use CodeIgniter\Format\JSONFormatter;
+use CodeIgniter\Format\XMLFormatter;
+
+class Format extends BaseConfig
+{
+    /**
+     * --------------------------------------------------------------------------
+     * Available Response Formats
+     * --------------------------------------------------------------------------
+     *
+     * When you perform content negotiation with the request, these are the
+     * available formats that your application supports. This is currently
+     * only used with the API\ResponseTrait. A valid Formatter must exist
+     * for the specified format.
+     *
+     * These formats are only checked when the data passed to the respond()
+     * method is an array.
+     *
+     * @var list<string>
+     */
+    public array $supportedResponseFormats = [
+        'application/json',
+        'application/xml', // machine-readable XML
+        'text/xml', // human-readable XML
+    ];
+
+    /**
+     * --------------------------------------------------------------------------
+     * Formatters
+     * --------------------------------------------------------------------------
+     *
+     * Lists the class to use to format responses with of a particular type.
+     * For each mime type, list the class that should be used. Formatters
+     * can be retrieved through the getFormatter() method.
+     *
+     * @var array<string, string>
+     */
+    public array $formatters = [
+        'application/json' => JSONFormatter::class,
+        'application/xml'  => XMLFormatter::class,
+        'text/xml'         => XMLFormatter::class,
+    ];
+
+    /**
+     * --------------------------------------------------------------------------
+     * Formatters Options
+     * --------------------------------------------------------------------------
+     *
+     * Additional Options to adjust default formatters behaviour.
+     * For each mime type, list the additional options that should be used.
+     *
+     * @var array<string, int>
+     */
+    public array $formatterOptions = [
+        'application/json' => JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES,
+        'application/xml'  => 0,
+        'text/xml'         => 0,
+    ];
+
+    /**
+     * --------------------------------------------------------------------------
+     * Maximum depth for JSON encoding.
+     * --------------------------------------------------------------------------
+     *
+     * This value determines how deep the JSON encoder will traverse nested structures.
+     */
+    public int $jsonEncodeDepth = 512;
+}