github: Run simulator on pull requests

scripts/run-sim

@@ -2,6 +2,31 @@
 
 set -e
 
-while true; do
-    cargo run -p limbo_sim
+iterations=""
+while [[ $# -gt 0 ]]; do
+    case $1 in
+        --iterations)
+            iterations="$2"
+            shift 2
+            ;;
+        *)
+            echo "Unknown option: $1"
+            echo "Usage: $0 [--max-iterations N]"
+            exit 1
+            ;;
+    esac
 done
+
+if [[ -n "$iterations" ]]; then
+    echo "Running limbo_sim for $iterations iterations..."
+    for ((i=1; i<=iterations; i++)); do
+        echo "Iteration $i of $iterations"
+        cargo run -p limbo_sim
+    done
+    echo "Completed $iterations iterations"
+else
+    echo "Running limbo_sim in infinite loop..."
+    while true; do
+        cargo run -p limbo_sim
+    done
+fi