chore(tests): add tests/conftest.py to adjust PYTHONPATH for src module

Added tests/conftest.py to prepend the project root to sys.path, ensuring that the src package is discoverable during test runs.

Author: CodeIter

tests/conftest.py

@@ -0,0 +1,7 @@
+import sys
+import os
+
+# Append project root directory to sys.path to import modules from src
+sys.path.insert(0, os.path.abspath(
+    os.path.join(os.path.dirname(__file__), '..')
+))