fix(operator): resolve Windows select.select OSError during TTY stdin…

[Adityakk9031]

Fixes #3

Summary

Fixes a crash when running interactive or attended evaluations on Windows hosts.

On Windows (sys.platform == "win32"), Python's standard library select.select() only supports socket objects. Calling:

select.select([sys.stdin], [], [], 0)

on a standard input stream raises:

OSError: [WinError 10038] An operation was attempted on something that is not a socket

causing step 0 to fail immediately during TTY stdin polling.

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Proposed Changes

• Windows msvcrt Polling: Updated _drain_stdin() and default_poll_end() in src/inspect_robots_franka/operator.py to check sys.platform == "win32" and use msvcrt.kbhit() and msvcrt.getwch().

• OSError Handling: Wrapped Unix select.select() polling in try...except OSError: blocks so non-socket standard streams on Windows or exotic TTY streams fail gracefully rather than crashing.

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Verification

• Unit Tests: Executed python -m pytest -o pythonpath=src --cov=src — 101 tests passed.

• Coverage: Maintained 100% statement and branch coverage across the package.

[Adityakk9031]

@jeqcho have a look

[jeqcho]

Thanks for the fix, and for routing the Windows path through msvcrt instead of trying to make select work where it can't. Tests all pass; the only red is formatting. Run uv run ruff format . (it wants to reformat src/inspect_robots_franka/operator.py), commit, and push. CI should go green after that.

[Adityakk9031]

@jeqcho please review again