feat: add pytest timeout and strict markers

- Add --timeout=60 to pytest.ini to catch hanging tests
- Add --strict-markers to enforce declared markers only
- Install pytest-timeout>=2.0.0 dependency
- All 627 tests pass within 60s timeout

pytest.ini

@@ -1,5 +1,5 @@
 [pytest]
-addopts = -m "not live and not docker"
+addopts = -m "not live and not docker" --timeout=60 --strict-markers
 markers =
     live: tests requiring server access (run with '-m live')
     docker: tests requiring Docker (run with '-m docker')

requirements.txt

@@ -40,3 +40,6 @@ numpy>=1.24.0
 
 # Sample data generation
 faker>=24.0.0
+
+# Testing
+pytest-timeout>=2.0.0