refactor：拆分 API 路由与请求校验，统一 final 类和代码风格

routes/api/v1/public.php

@@ -0,0 +1,37 @@
+<?php
+
+use Illuminate\Support\Facades\Route;
+use App\Http\Controllers\Api\V1\HealthController;
+use App\Http\Controllers\Api\V1\Draw\DrawCurrentController;
+use App\Http\Controllers\Api\V1\Draw\DrawResultShowController;
+use App\Http\Controllers\Api\V1\Draw\DrawResultsIndexController;
+use App\Http\Controllers\Api\V1\Jackpot\JackpotSummaryController;
+use App\Http\Controllers\Api\V1\Play\PlayEffectiveCatalogController;
+use App\Http\Controllers\Api\V1\Player\PingController as PlayerPingController;
+
+/**
+ * 公开路由（无需登录）。
+ */
+
+// 健康检查
+Route::get('health', HealthController::class)->name('api.v1.health');
+
+// 开奖相关（公开）
+Route::get('draw/current', DrawCurrentController::class)->name('api.v1.draw.current');
+Route::get('draw/results', DrawResultsIndexController::class)->name('api.v1.draw.results');
+Route::get('draw/results/{draw_no}', DrawResultShowController::class)
+    ->where('draw_no', '[0-9]{8}-[0-9]{3}')
+    ->name('api.v1.draw.results.show');
+
+// 奖池水位（公开）
+Route::get('jackpot/summary', JackpotSummaryController::class)->name('api.v1.jackpot.summary');
+
+// 玩法目录（公开）
+Route::get('play/effective', PlayEffectiveCatalogController::class)->name('api.v1.play.effective');
+
+// 玩家端连通性探测
+Route::prefix('player')
+    ->name('api.v1.player.')
+    ->group(function (): void {
+        Route::get('ping', PlayerPingController::class)->name('ping');
+    });