Add placeholder test to fix CI/CD pipeline

test_agent.py

@@ -1 +1,12 @@
-assert 1 == 1
+import pytest
+
+def test_placeholder_pass():
+    """
+    A simple placeholder test to ensure the CI/CD pipeline 
+    runs successfully while the actual agent tests are being built.
+    """
+    assert True == True
+
+# def test_real_logic():
+#   # TODO: Write real LLM mocking tests here later
+#   pass