后台流水区分四种装扮消费类型：气泡/昵称色/文字色/头像框

- CurrencySource 新增 MSG_BUBBLE_BUY、MSG_NAME_COLOR_BUY、MSG_TEXT_COLOR_BUY
- DecorationService::purchase() 按商品 type 选择对应 source
- 后台流水页「来源途径」筛选现在可分别查询四种装扮消费

app/Services/DecorationService.php

@@ -74,10 +74,14 @@ class DecorationService
         $days = max(1, (int) ($item->duration_days ?? 1));
         $expiresAt = Carbon::now()->addDays($days);
 
-        // 头像框与其他装扮使用不同的流水来源标识
-        $source = $item->type === 'avatar_frame'
-            ? CurrencySource::AVATAR_FRAME_BUY
-            : CurrencySource::MSG_DECORATION_BUY;
+        // 按装扮类型使用不同的流水来源标识，便于后台按类型筛选消费记录
+        $source = match ($item->type) {
+            'msg_bubble' => CurrencySource::MSG_BUBBLE_BUY,
+            'msg_name_color' => CurrencySource::MSG_NAME_COLOR_BUY,
+            'msg_text_color' => CurrencySource::MSG_TEXT_COLOR_BUY,
+            'avatar_frame' => CurrencySource::AVATAR_FRAME_BUY,
+            default => CurrencySource::MSG_DECORATION_BUY,
+        };
 
         // 事务包裹：扣金币、写购买记录、更新激活状态三步原子操作
         DB::transaction(function () use ($user, $item, $slot, $days, $expiresAt, $source) {