chore: initial commit of existing codebase

app/Models/BillOfMaterial.php

@@ -0,0 +1,27 @@
+<?php
+
+namespace App\Models;
+
+use Illuminate\Database\Eloquent\Factories\HasFactory;
+use Illuminate\Database\Eloquent\Model;
+
+class BillOfMaterial extends Model
+{
+    use HasFactory;
+
+    protected $table = 'bill_of_materials';
+
+    protected $fillable = ['product_id', 'raw_material_id', 'quantity_required', 'unit_of_measure', 'notes'];
+
+    protected $casts = ['quantity_required' => 'decimal:2'];
+
+    public function product()
+    {
+        return $this->belongsTo(Item::class, 'product_id');
+    }
+
+    public function rawMaterial()
+    {
+        return $this->belongsTo(Item::class, 'raw_material_id');
+    }
+}