Builder administration area

* Page builder foundation
* Form builder document type
* Dashboard builder document type
* Report builder document type
* Menu builder document type
* Email builder document type
* Query builder document type
* Workflow builder document type
* Reusable component registry
* Form-field registry
* Dashboard-widget registry
* Hero, heading, and rich-content components
* JSON document schema
* Saved builder documents
* Draft, published, and archived states
* Document version history
* Reusable builder templates
* Component rendering service
* Extensible BuilderComponent contract
* Authenticated Builder REST endpoints
* Administration navigation
* Builder permissions
* Module registration and test

Modules/Builder/Models/BuilderDocumentVersion.php

@@ -0,0 +1,8 @@
+<?php
+namespace Modules\Builder\Models;
+use Illuminate\Database\Eloquent\Model;
+final class BuilderDocumentVersion extends Model
+{
+    protected $fillable=['builder_document_id','version','document','settings','created_by'];
+    protected $casts=['document'=>'array','settings'=>'array'];
+}