feat: 實作銷售單匯入管理、貨道扣庫優化及 UI 細節調整

app/Modules/Sales/Models/SalesImportItem.php

@@ -0,0 +1,51 @@
+<?php
+
+namespace App\Modules\Sales\Models;
+
+use App\Modules\Inventory\Models\Product;
+use App\Modules\Inventory\Models\Warehouse;
+use Illuminate\Database\Eloquent\Factories\HasFactory;
+use Illuminate\Database\Eloquent\Model;
+use Illuminate\Database\Eloquent\Relations\BelongsTo;
+
+class SalesImportItem extends Model
+{
+    use HasFactory;
+
+    protected $table = 'sales_import_items';
+
+    protected $fillable = [
+        'batch_id',
+        'machine_id',
+        'slot',
+        'product_code',
+        'product_id',
+        'transaction_at',
+        'transaction_serial',
+        'quantity',
+        'amount',
+        'original_status',
+    ];
+
+    protected $casts = [
+        'transaction_at' => 'datetime',
+        'quantity' => 'integer',
+        'amount' => 'decimal:4',
+        'original_status' => 'string',
+    ];
+
+    public function batch(): BelongsTo
+    {
+        return $this->belongsTo(SalesImportBatch::class, 'batch_id');
+    }
+
+    public function product(): BelongsTo
+    {
+        return $this->belongsTo(Product::class, 'product_id');
+    }
+
+    public function warehouse(): BelongsTo
+    {
+        return $this->belongsTo(Warehouse::class, 'machine_id', 'code');
+    }
+}