feat: upgrade adjustment workflow to require explicit inbound SKU or outbound tracking number and fix UTC timezone issue

inventory-backend/app/models/stock/adjustment.py

@@ -34,6 +34,10 @@ class StockAdjustment(db.Model):
     reason = db.Column(db.String(500), nullable=False)
     # 状态：'pending' 待处理 / 'completed' 已完成 / 'cancelled' 已取消
     status = db.Column(db.String(20), default='pending')
+    # 关联入库SKU（盘盈时填写）
+    linked_sku = db.Column(db.String(100), comment='关联入库SKU（盘盈时填写）')
+    # 关联出库单号（盘亏时填写）
+    linked_outbound_no = db.Column(db.String(100), comment='关联出库单号（盘亏时填写）')
     # 操作人/经办人
     operator = db.Column(db.String(100))
     # 创建时间
@@ -56,6 +60,8 @@ class StockAdjustment(db.Model):
             'adjust_quantity': float(self.adjust_quantity or 0),
             'reason': self.reason,
             'status': self.status,
+            'linked_sku': self.linked_sku,
+            'linked_outbound_no': self.linked_outbound_no,
             'operator': self.operator,
             'create_time': self.create_time.strftime('%Y-%m-%d %H:%M:%S') if self.create_time else None,
             'update_time': self.update_time.strftime('%Y-%m-%d %H:%M:%S') if self.update_time else None,