Align order costs and rebalance priority with rqalpha

crates/fidc-core/src/events.rs

@@ -41,6 +41,8 @@ pub enum OrderStatus {
 pub struct OrderEvent {
     #[serde(with = "date_format")]
     pub date: NaiveDate,
+    #[serde(default)]
+    pub order_id: Option<u64>,
     pub symbol: String,
     pub side: OrderSide,
     pub requested_quantity: u32,
@@ -53,6 +55,8 @@ pub struct OrderEvent {
 pub struct FillEvent {
     #[serde(with = "date_format")]
     pub date: NaiveDate,
+    #[serde(default)]
+    pub order_id: Option<u64>,
     pub symbol: String,
     pub side: OrderSide,
     pub quantity: u32,