test(sequential): add tests for sequential command execution

Author: Akagi201

test_sequential.sh

@@ -0,0 +1,14 @@
+# Test sequential execution
+# @LOCAL
+echo "Command 1: Starting"
+sleep 0.5
+echo "Command 1: Finished"
+
+echo "Command 2: Starting"
+sleep 0.5
+echo "Command 2: Finished"
+
+echo "Command 3: This is a very long output"
+for i in {1..30}; do
+    echo "Line $i of output"
+done