feature: knowledge base & surplus switch

app/Models/Knowledge.php

@@ -0,0 +1,12 @@
+<?php
+
+namespace App\Models;
+
+use Illuminate\Database\Eloquent\Model;
+
+class Knowledge extends Model
+{
+    protected $table = 'v2_knowledge';
+    protected $dateFormat = 'U';
+    protected $guarded = ['id'];
+}