style: apply consistent whitespace and formatting across codebase

tinytorch/tests/e2e/README.md

@@ -82,4 +82,3 @@ make e2e-full
 5. **Error Handling**
    - Graceful failures for invalid commands
    - Helpful error messages
-

tinytorch/tests/e2e/conftest.py

@@ -15,4 +15,3 @@ def pytest_configure(config):
     config.addinivalue_line("markers", "full_journey: Complete journey tests (~10min)")
     config.addinivalue_line("markers", "slow: Slow tests that train models")
     config.addinivalue_line("markers", "release: Release validation tests")
-

tinytorch/tests/e2e/test_user_journey.py

@@ -143,7 +143,7 @@ class TestQuickVerification:
             capture_output=True,
             text=True
         ).returncode, "", ""
-        
+
         result = subprocess.run(
             [sys.executable, "-c", "import tinytorch; print('OK')"],
             cwd=PROJECT_ROOT,
@@ -427,4 +427,3 @@ class TestInstallationPaths:
 
 if __name__ == "__main__":
     pytest.main([__file__, "-v"])
-