Add persistent limit orders and cancel semantics

crates/fidc-core/src/events.rs

@@ -31,6 +31,7 @@ pub enum OrderSide {
 
 #[derive(Debug, Clone, Copy, Serialize, Deserialize, PartialEq, Eq)]
 pub enum OrderStatus {
+    Pending,
     Filled,
     PartiallyFilled,
     Canceled,

crates/fidc-core/src/strategy.rs

@@ -89,6 +89,12 @@ pub enum OrderIntent {
         quantity: i32,
         reason: String,
     },
+    LimitShares {
+        symbol: String,
+        quantity: i32,
+        limit_price: f64,
+        reason: String,
+    },
     Lots {
         symbol: String,
         lots: i32,
@@ -114,6 +120,17 @@ pub enum OrderIntent {
         target_percent: f64,
         reason: String,
     },
+    CancelOrder {
+        order_id: u64,
+        reason: String,
+    },
+    CancelSymbol {
+        symbol: String,
+        reason: String,
+    },
+    CancelAll {
+        reason: String,
+    },
 }
 
 #[derive(Debug, Clone)]