feat: enhance player authentication and agent management features

- Updated AGENTS.md to clarify player interface bindings and agent account restrictions.
- Improved PlayerAuthLoginController to include captcha verification for player login.
- Enhanced AdminPlayerIndexController with permission checks for admin users.
- Refactored AdminPlayerStoreController to enforce agent node restrictions for non-super admins.
- Introduced new error codes for player authentication failures and updated related services.
- Enhanced validation rules for agent profiles to include settlement cycle options.
- Improved AdminCaptchaService to support separate scopes for admin and player captcha handling.
- Updated various services to ensure proper credit management and settlement processes.

app/Support/CreditLineMode.php

@@ -3,16 +3,12 @@
 namespace App\Support;
 
 use App\Models\AdminSite;
-use App\Services\LotterySettings;
 
+/** 站点级信用占成盘开关（extra_json.credit_line_mode）；玩家判读以 funding_mode 为准。 */
 final class CreditLineMode
 {
     public static function isEnabledForSiteCode(string $siteCode): bool
     {
-        if ((bool) LotterySettings::get('settlement.credit_line_disable_instant_rebate', false)) {
-            return true;
-        }
-
         $site = AdminSite::query()->where('code', $siteCode)->first(['extra_json']);
         if ($site === null) {
             return false;