Test suite modernization: pytest wrapper and runner fixes

- Add LD_LIBRARY_PATH auto-configuration in run_tests.py
- Add --timeout and --quiet command-line flags
- Create pytest wrapper (conftest.py, test_mcrogueface.py) for IDE integration
- Configure pytest.ini to avoid importing mcrfpy modules
- Document known issues: 120/179 passing, 40 timeouts, 19 failures

🤖 Generated with Claude Code (https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

tests/pytest.ini

@@ -0,0 +1,14 @@
+[pytest]
+# McRogueFace test scripts run via subprocess, not as Python modules
+# They contain `import mcrfpy` which is only available inside McRogueFace
+
+# Don't try to import test scripts from these directories
+norecursedirs = unit integration regression benchmarks demo geometry_demo notes vllm_demo
+
+# Run test_*.py files in tests/ root that are pytest-native wrappers
+python_files = test_*.py
+python_classes = Test*
+python_functions = test_*
+
+# Custom option for timeout
+addopts = -v