Expose open order state to strategy runtime

crates/fidc-core/tests/strategy_selection.rs

@@ -25,6 +25,7 @@ fn strategy_emits_target_weights_and_diagnostics() {
             decision_index: 0,
             data: &data,
             portfolio: &portfolio,
+            open_orders: &[],
         })
         .expect("decision");
 
@@ -62,6 +63,7 @@ fn jq_strategy_emits_same_day_decision() {
             decision_index: 0,
             data: &data,
             portfolio: &portfolio,
+            open_orders: &[],
         })
         .expect("jq decision");