fix: resolve known issues and improve code standards

- Fix known bugs in user, plan, and server modules
- Standardize code formatting and structure
- Optimize database queries and model relationships
- Improve request validation and error handling
- Update admin controllers for better consistency

app/Models/Coupon.php

@@ -14,7 +14,8 @@ class Coupon extends Model
         'created_at' => 'timestamp',
         'updated_at' => 'timestamp',
         'limit_plan_ids' => 'array',
-        'limit_period' => 'array'
+        'limit_period' => 'array',
+        'show' => 'boolean',
     ];
 
     public function getLimitPeriodAttribute($value)

app/Models/InviteCode.php

@@ -10,6 +10,7 @@ class InviteCode extends Model
     protected $dateFormat = 'U';
     protected $casts = [
         'created_at' => 'timestamp',
-        'updated_at' => 'timestamp'
+        'updated_at' => 'timestamp',
+        'status' => 'boolean',
     ];
 }

app/Models/Plan.php

@@ -23,7 +23,7 @@ use Illuminate\Database\Eloquent\Relations\HasOne;
  * @property array|null $prices 价格配置
  * @property int $sort 排序
  * @property string|null $content 套餐描述
- * @property int $reset_traffic_method 流量重置方式
+ * @property int|null $reset_traffic_method 流量重置方式
  * @property int|null $capacity_limit 订阅人数限制
  * @property int|null $device_limit 设备数量限制
  * @property int $created_at

app/Models/Plugin.php

@@ -11,6 +11,10 @@ class Plugin extends Model
     protected $guarded = [
         'id',
         'created_at',
-        'updated_at'
+        'updated_at',
+    ];
+
+    protected $casts = [
+        'is_enabled' => 'boolean'
     ];
 }

app/Models/Server.php

@@ -23,7 +23,7 @@ use Illuminate\Database\Eloquent\Casts\Attribute;
  * @property array|null $group_ids 分组IDs
  * @property array|null $route_ids 路由IDs
  * @property array|null $tags 标签
- * @property string|null $show 是否显示
+ * @property boolean $show 是否显示
  * @property string|null $allow_insecure 是否允许不安全
  * @property string|null $network 网络类型
  * @property int|null $parent_id 父节点ID
@@ -112,6 +112,7 @@ class Server extends Model
         'protocol_settings' => 'array',
         'last_check_at' => 'integer',
         'last_push_at' => 'integer',
+        'show' => 'boolean',
         'created_at' => 'timestamp',
         'updated_at' => 'timestamp'
     ];

app/Models/User.php

@@ -37,8 +37,8 @@ use Illuminate\Database\Eloquent\Relations\HasMany;
  * @property int|null $last_login_at 最后登录时间
  * @property int|null $parent_id 父账户ID
  * @property int|null $is_admin 是否管理员
- * @property \Carbon\Carbon|null $next_reset_at 下次流量重置时间
- * @property \Carbon\Carbon|null $last_reset_at 上次流量重置时间
+ * @property int|null $next_reset_at 下次流量重置时间
+ * @property int|null $last_reset_at 上次流量重置时间
  * @property int $reset_count 流量重置次数
  * @property int $created_at
  * @property int $updated_at
@@ -64,7 +64,9 @@ class User extends Authenticatable
     protected $casts = [
         'created_at' => 'timestamp',
         'updated_at' => 'timestamp',
-        'banned' => 'integer',
+        'banned' => 'boolean',
+        'is_admin' => 'boolean',
+        'is_staff' => 'boolean',
         'remind_expire' => 'boolean',
         'remind_traffic' => 'boolean',
         'commission_auto_check' => 'boolean',