feat: 更新玩家信息和统计功能

- 在多个控制器中更新玩家相关数据的查询，新增 'nickname' 字段以增强玩家信息的完整性。
- 在 AdminDashboardSnapshotBuilder 中引入平台风险统计，提供锁定金额和使用百分比的概览。
- 更新 AdminReportQueryService 以返回更详细的统计数据，包括总投注、总中奖和总派彩金额。
- 增强测试用例以验证新增字段和统计功能的准确性。

tests/Feature/PlayerFoundationTest.php

@@ -98,13 +98,20 @@ test('jwt first successful login auto-registers player mapping', function () {
         'exp' => $now + 300,
     ], 'jwt-test-secret', 'HS256');
 
-    $this->withHeader('Authorization', 'Bearer '.$jwt)
+    $response = $this->withHeader('Authorization', 'Bearer '.$jwt)
         ->getJson('/api/v1/player/me')
         ->assertOk()
         ->assertJsonPath('data.site_player_id', 'brand-new-sso-1')
         ->assertJsonPath('data.default_currency', 'NPR');
 
-    expect(Player::query()->where('site_player_id', 'brand-new-sso-1')->count())->toBe(1);
+    $username = $response->json('data.username');
+    expect($username)->toMatch('/^nlotto\d{6}$/')
+        ->and($response->json('data.nickname'))->toBe($username);
+
+    $player = Player::query()->where('site_player_id', 'brand-new-sso-1')->first();
+    expect($player)->not->toBeNull()
+        ->and($player->username)->toBe($username)
+        ->and($player->nickname)->toBe($username);
 });
 
 test('player me rejects non-active status with 8005', function () {