放大金币发放/赠送的最大额度至 999999999；同步后端允许平级用户互相执行管理操作

app/Http/Controllers/AdminCommandController.php

@@ -429,7 +429,7 @@ class AdminCommandController extends Controller
         $request->validate([
             'username' => 'required|string',
             'room_id' => 'required|integer',
-            'amount' => 'required|integer|min:1|max:99999',
+            'amount' => 'required|integer|min:1|max:999999999',
         ]);
 
         $admin = Auth::user();
@@ -694,9 +694,9 @@ class AdminCommandController extends Controller
             return false;
         }
 
-        // 目标用户等级必须低于操作者
+        // 目标用户等级不能高于操作者（允许平级互相操作）
         $target = User::where('username', $targetUsername)->first();
-        if ($target && $target->user_level >= $admin->user_level) {
+        if ($target && $target->user_level > $admin->user_level) {
             return false;
         }
 

app/Http/Controllers/ChatController.php

@@ -1156,7 +1156,7 @@ class ChatController extends Controller
         $request->validate([
             'to_user' => 'required|string',
             'room_id' => 'required|integer',
-            'amount' => 'required|integer|min:1|max:999999',
+            'amount' => 'required|integer|min:1|max:999999999',
         ]);
 
         $sender = Auth::user();