chore: 完善模組化架構遷移與修復前端顯示錯誤

- 修正所有模組 Controller 的 Model 引用路徑 (App\Modules\...)
- 更新 ProductionOrder 與 ProductionOrderItem 模型結構以符合新版邏輯
- 修復 resources/js/utils/format.ts 在處理空值時導致 toLocaleString 崩潰的問題
- 清除全域路徑與 Controller 遷移殘留檔案

app/Modules/Procurement/Controllers/VendorProductController.php

@@ -0,0 +1,126 @@
+<?php
+
+namespace App\Modules\Procurement\Controllers;
+
+use App\Http\Controllers\Controller;
+use App\Modules\Procurement\Models\Vendor;
+
+use Illuminate\Http\Request;
+use Illuminate\Support\Facades\Log;
+
+class VendorProductController extends Controller
+{
+    /**
+     * 新增供貨商品 (Attach)
+     */
+    public function store(Request $request, Vendor $vendor)
+    {
+        $validated = $request->validate([
+            'product_id' => 'required|exists:products,id',
+            'last_price' => 'nullable|numeric|min:0',
+        ]);
+
+        // 檢查是否已存在
+        if ($vendor->products()->where('product_id', $validated['product_id'])->exists()) {
+            return redirect()->back()->with('error', '該商品已在供貨清單中');
+        }
+
+        $vendor->products()->attach($validated['product_id'], [
+            'last_price' => $validated['last_price'] ?? null
+        ]);
+
+        // 記錄操作
+        $product = \App\Modules\Inventory\Models\Product::find($validated['product_id']);
+        activity()
+            ->performedOn($vendor)
+            ->withProperties([
+                'attributes' => [
+                    'product_name' => $product->name,
+                    'last_price' => $validated['last_price'] ?? null,
+                ],
+                'sub_subject' => '供貨商品',
+                'snapshot' => [
+                    'name' => "{$vendor->name}-{$product->name}", // 顯示例如：台積電-紅糖
+                    'vendor_name' => $vendor->name,
+                    'product_name' => $product->name,
+                ]
+            ])
+            ->event('created')
+            ->log('新增供貨商品');
+
+        return redirect()->back()->with('success', '供貨商品已新增');
+    }
+
+    /**
+     * 更新供貨商品資訊 (Update Pivot)
+     */
+    public function update(Request $request, Vendor $vendor, $productId)
+    {
+        $validated = $request->validate([
+            'last_price' => 'nullable|numeric|min:0',
+        ]);
+
+        // 獲取舊價格
+        $old_price = $vendor->products()->where('product_id', $productId)->first()?->pivot?->last_price;
+
+        $vendor->products()->updateExistingPivot($productId, [
+            'last_price' => $validated['last_price'] ?? null
+        ]);
+
+        // 記錄操作
+        $product = \App\Modules\Inventory\Models\Product::find($productId);
+        activity()
+            ->performedOn($vendor)
+            ->withProperties([
+                'old' => [
+                    'last_price' => $old_price,
+                ],
+                'attributes' => [
+                    'last_price' => $validated['last_price'] ?? null,
+                ],
+                'sub_subject' => '供貨商品',
+                'snapshot' => [
+                    'name' => "{$vendor->name}-{$product->name}",
+                    'vendor_name' => $vendor->name,
+                    'product_name' => $product->name,
+                ]
+            ])
+            ->event('updated')
+            ->log('更新供貨商品價格');
+
+        return redirect()->back()->with('success', '供貨資訊已更新');
+    }
+
+    /**
+     * 移除供貨商品 (Detach)
+     */
+    public function destroy(Vendor $vendor, $productId)
+    {
+        // 記錄操作 (需在 detach 前獲取資訊)
+        $product = \App\Modules\Inventory\Models\Product::find($productId);
+        $old_price = $vendor->products()->where('product_id', $productId)->first()?->pivot?->last_price;
+        
+        $vendor->products()->detach($productId);
+
+        if ($product) {
+            activity()
+                ->performedOn($vendor)
+                ->withProperties([
+                    'old' => [
+                        'product_name' => $product->name,
+                        'last_price' => $old_price,
+                    ],
+                    'sub_subject' => '供貨商品',
+                    'snapshot' => [
+                        'name' => "{$vendor->name}-{$product->name}",
+                        'vendor_name' => $vendor->name,
+                        'product_name' => $product->name,
+                    ]
+                ])
+                ->event('deleted')
+                ->log('移除供貨商品');
+        }
+
+        return redirect()->back()->with('success', '供貨商品已移除');
+    }
+}