特性：增加创始人专享的在线 SMTP 配置系统并在 AppServiceProvider 中动态加载以拦截系统发件

app/Providers/AppServiceProvider.php

@@ -3,6 +3,9 @@
 namespace App\Providers;
 
 use Illuminate\Support\ServiceProvider;
+use App\Models\Sysparam;
+use Illuminate\Support\Facades\Config;
+use Illuminate\Support\Facades\Schema;
 
 class AppServiceProvider extends ServiceProvider
 {
@@ -19,6 +22,32 @@ class AppServiceProvider extends ServiceProvider
      */
     public function boot(): void
     {
-        //
+        // 动态加载自定义 SMTP 配置 (如果有数据库则执行)
+        try {
+            if (Schema::hasTable('sysparam')) {
+                $smtpConfig = Sysparam::where('alias', 'like', 'smtp_%')->pluck('body', 'alias');
+                
+                if ($smtpConfig->isNotEmpty() && $smtpConfig->get('smtp_host')) {
+                    Config::set('mail.default', 'smtp');
+                    Config::set('mail.mailers.smtp', [
+                        'transport' => 'smtp',
+                        'host' => $smtpConfig->get('smtp_host'),
+                        'port' => $smtpConfig->get('smtp_port', 465),
+                        'encryption' => $smtpConfig->get('smtp_encryption', 'ssl'),
+                        'username' => $smtpConfig->get('smtp_username'),
+                        'password' => $smtpConfig->get('smtp_password'),
+                        'timeout' => null,
+                        'local_domain' => env('MAIL_EHLO_DOMAIN'),
+                    ]);
+
+                    Config::set('mail.from', [
+                        'address' => $smtpConfig->get('smtp_from_address', $smtpConfig->get('smtp_username')),
+                        'name' => $smtpConfig->get('smtp_from_name', '飘落流星聊天室'),
+                    ]);
+                }
+            }
+        } catch (\Exception $e) {
+            // 在安装初期表不存在时忽略，防止应用崩溃
+        }
     }
 }