fix: ensure remark field is properly parsed and saved to database during stocktake update

inventory-backend/app/api/v1/inbound/stock.py

@@ -165,7 +165,7 @@ def add_draft():
     """
     扫码同步 (支持更新数量)
     如果 session_id 不存在则创建新的会话
-    
+
     差异计算逻辑调整：
     - adjusted_stock_qty = 账面总库存 - 借出未还数量
     - diff_qty = 实盘数量 - adjusted_stock_qty
@@ -176,6 +176,8 @@ def add_draft():
         uuid = data.get('uuid')
         quantity = float(data.get('quantity', 1))
         session_id = data.get('session_id')
+        # ★ 新增: 提取备注字段
+        remark = data.get('remark')
 
         if not uuid:
             return jsonify({"message": "UUID不能为空"}), 400
@@ -216,6 +218,9 @@ def add_draft():
             draft.diff_qty = quantity - adjusted_stock_qty
             draft.source_table = source_table
             draft.stock_id = stock_id
+            # ★ 新增: 保存备注
+            if remark is not None:
+                draft.remark = remark.strip() if isinstance(remark, str) else remark
         else:
             # 如果不存在，创建新的
             draft = StocktakeDraft(
@@ -226,7 +231,9 @@ def add_draft():
                 stock_qty=adjusted_stock_qty,
                 diff_qty=quantity - adjusted_stock_qty,
                 source_table=source_table,
-                stock_id=stock_id
+                stock_id=stock_id,
+                # ★ 新增: 保存备注
+                remark=remark.strip() if isinstance(remark, str) and remark else (remark if remark else None)
             )
             db.session.add(draft)