Ralf W. Grosse-Kunstleve 1014ee403f Add progress reporter for test_with_catch Catch2 runner ...

Add a custom Catch2 streaming reporter that prints one line per test
case as it starts and ends, with immediate flushing to keep CI logs
current. This makes it easy to see where the embedded/interpreter
tests are spending time and to pinpoint which test case is stuck
when builds hang (e.g., free-threading issues).

The reporter:
- Prints "[ RUN      ]" when each test starts
- Prints "[       OK ]" or "[  FAILED  ]" when each test ends
- Prints the Python version once at the start via Py_GetVersion()
- Uses StreamingReporterBase for immediate output (not buffered)
- Is set as the default reporter via CATCH_CONFIG_DEFAULT_REPORTER

This approach gives visibility into all tests without changing their
behavior, turning otherwise opaque 90-minute CI timeouts into
locatable issues in the Catch output.

2025-12-20 03:38:00 -08:00

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