[Jim Hall (biggdawg320)]

Django test discovery and execution failed with manage.py test: error: argument -v/--verbosity: expected one argument because the extension's default unittest discovery arguments (-v -s . -p test*.py) were forwarded as-is to manage.py test, even though Django's -v/--verbosity requires an explicit value and has no -s/--start-directory equivalent. django_handler.py's _to_manage_py_args now adapts only those two incompatible flags (dropping -s/--start-directory, translating -v/-q into an explicit -v 2/-v 0) while passing every other argument through unchanged, so user-supplied -p, -t, --failfast, and Django-specific options like --keepdb keep working as before. Added end-to-end regression tests in test_discovery.py and test_execution.py (plus a small extension to django_test_execution_script.py to forward extra args) that drive the real discovery/execution scripts with the default args and assert on the resulting payload.

Fixes #24991

Testing

• Added a test (python_files/tests/unittestadapter/test_discovery.py) that fails on the current code and passes with this change.
• The surrounding tests pass: python python_files/tests/run_all.py python_files/tests/unittestadapter --no-functional

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This change was drafted with AI assistance (Claude) and verified against the project's own test suite before submission.

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