feat: create models and SQL schemas for stocktake remarks and inventory adjustments

inventory-backend/app/models/inbound/stocktake.py

@@ -26,6 +26,8 @@ class StocktakeDraft(db.Model):
     stock_qty = db.Column(db.Numeric(19, 4), default=0)
     # 差异数量 (实盘 - 账面, 正=盘盈, 负=盘亏)
     diff_qty = db.Column(db.Numeric(19, 4), default=0)
+    # 盘点备注（可选）
+    remark = db.Column(db.String(255), comment='盘点备注（可选）')
 
     def to_dict(self):
         return {
@@ -38,5 +40,51 @@ class StocktakeDraft(db.Model):
             'source_table': self.source_table,
             'stock_id': self.stock_id,
             'stock_qty': float(self.stock_qty or 0),
-            'diff_qty': float(self.diff_qty or 0)
+            'diff_qty': float(self.diff_qty or 0),
+            'remark': self.remark
+        }
+
+
+class StockAdjustment(db.Model):
+    """
+    盘盈盘亏调整表
+    记录盘点后的库存调整业务
+    """
+    __tablename__ = 'stock_adjustment'
+
+    id = db.Column(db.Integer, primary_key=True)
+    # 调整单号(ADJ-日期-流水)
+    order_no = db.Column(db.String(64), unique=True, index=True, comment='调整单号')
+    # 关联物料基础表ID
+    base_id = db.Column(db.Integer, index=True, comment='关联物料基础表ID')
+    # SKU
+    sku = db.Column(db.String(128), index=True, comment='SKU')
+    # 库位
+    warehouse_location = db.Column(db.String(128), comment='库位')
+    # 类型：盘盈 / 盘亏
+    adjust_type = db.Column(db.String(20), comment='类型：盘盈/盘亏')
+    # 调整数量(绝对值)
+    adjust_quantity = db.Column(db.Integer, nullable=False, comment='调整数量(绝对值)')
+    # 调整原因(必填)
+    reason = db.Column(db.String(255), nullable=False, comment='调整原因(必填)')
+    # 状态
+    status = db.Column(db.String(20), default='已完成', comment='状态')
+    # 经办人
+    operator = db.Column(db.String(64), comment='经办人')
+    # 创建时间
+    create_time = db.Column(db.DateTime, default=beijing_time)
+
+    def to_dict(self):
+        return {
+            'id': self.id,
+            'order_no': self.order_no,
+            'base_id': self.base_id,
+            'sku': self.sku,
+            'warehouse_location': self.warehouse_location,
+            'adjust_type': self.adjust_type,
+            'adjust_quantity': self.adjust_quantity,
+            'reason': self.reason,
+            'status': self.status,
+            'operator': self.operator,
+            'create_time': self.create_time.strftime('%Y-%m-%d %H:%M:%S') if self.create_time else None
         }