feat(procurement): 實作採購退回單模組並修復商品選單報錯

resources/js/types/purchase-return.ts

@@ -0,0 +1,48 @@
+export type PurchaseReturnStatus = "draft" | "completed" | "cancelled";
+
+export interface PurchaseReturnItem {
+    id?: number;
+    purchase_return_id?: number;
+    product_id: number;
+    quantity_returned: number;
+    unit_price: number;
+    total_amount: number;
+    batch_number?: string | null;
+    product_code?: string;
+    product_name?: string;
+    product?: any; // 當有關聯商品時
+}
+
+export interface PurchaseReturn {
+    id: number;
+    code: string;
+    vendor_id: number;
+    warehouse_id: number;
+    user_id: number;
+    return_date: string;
+    status: PurchaseReturnStatus;
+    total_amount: number;
+    tax_amount: number;
+    grand_total: number;
+    remarks?: string | null;
+    created_at: string;
+    updated_at: string;
+
+    // 關聯資料
+    vendor?: {
+        id: number;
+        name: string;
+    };
+    user?: {
+        id: number;
+        name: string;
+    };
+    items?: PurchaseReturnItem[];
+    warehouse_name?: string;
+}
+
+export const PURCHASE_RETURN_STATUS_CONFIG: Record<PurchaseReturnStatus, { label: string; color: string }> = {
+    draft: { label: "草稿", color: "bg-gray-100 text-gray-800" },
+    completed: { label: "已完成", color: "bg-green-100 text-green-800" },
+    cancelled: { label: "已作廢", color: "bg-red-100 text-red-800" },
+};