feat: 增强环境配置与开发服务，支持局域网访问及币种管理

app/Http/Controllers/Api/V1/Currency/CurrencyIndexController.php

@@ -0,0 +1,29 @@
+<?php
+
+namespace App\Http\Controllers\Api\V1\Currency;
+
+use App\Models\Currency;
+use App\Support\ApiResponse;
+use Illuminate\Http\JsonResponse;
+use App\Http\Controllers\Controller;
+
+final class CurrencyIndexController extends Controller
+{
+    public function __invoke(): JsonResponse
+    {
+        $items = Currency::query()
+            ->where('is_enabled', true)
+            ->orderByDesc('is_bettable')
+            ->orderBy('code')
+            ->get()
+            ->map(fn (Currency $currency): array => [
+                'code' => $currency->code,
+                'name' => $currency->name,
+                'decimal_places' => (int) $currency->decimal_places,
+                'is_bettable' => (bool) $currency->is_bettable,
+            ])
+            ->all();
+
+        return ApiResponse::success(['items' => $items]);
+    }
+}