feat: 統一進貨單 UI、修復庫存異動紀錄與廠商詳情顯示報錯

database/migrations/tenant/2026_01_27_153000_update_purchase_order_statuses.php

@@ -0,0 +1,32 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+use Illuminate\Support\Facades\DB;
+
+return new class extends Migration
+{
+    /**
+     * Run the migrations.
+     */
+    public function up(): void
+    {
+        // Update old statuses to 'approved'
+        DB::table('purchase_orders')
+            ->whereIn('status', ['processing', 'shipping', 'confirming'])
+            ->update(['status' => 'approved']);
+    }
+
+    /**
+     * Reverse the migrations.
+     */
+    public function down(): void
+    {
+        // Cannot easily reverse without knowing original status, 
+        // but typically we can revert 'approved' back to 'processing' as a safeguard if needed,
+        // or just leave it since 'approved' is broader.
+        // For strict reversal, we might try to map back, but effectively this is a one-way consolidation.
+        // We will leave it as is for down/safe side.
+    }
+};