fix: handle None query_time in xlsx and invalid timeout CLI args

[mitre88]

Summary

• Fix xlsx output to use empty string when query_time is None instead of appending raw None value (fixes Bug: xlsx output always appends None for response_time_s when query_time is missing #2891)
• Add try/except in timeout_check() to raise ArgumentTypeError for non-numeric timeout values like "abc" (fixes cli: invalid --timeout values raise a raw parser exception #2866)
• Add regression tests for invalid timeout values (0, -5, "abc")

Changes

sherlock.py

1. XLSX output fix (lines 921-925): Changed condition from if response_time_s is None (always false since it's a list) to if query_time is None where query_time = results[site]["status"].query_time

2. Timeout validation (lines 533-538): Wrapped float(value) in try/except to catch ValueError and re-raise as ArgumentTypeError for consistent error handling

test_ux.py

Added test_invalid_timeout_values parametrized test covering:

• --timeout 0 → "Invalid timeout value: 0"
• --timeout -5 → "Invalid timeout value: -5"
• --timeout abc → "Invalid timeout value: abc"

Testing

The new test can be run with: pytest tests/test_ux.py::test_invalid_timeout_values -v

Fixes #2891
Fixes #2866

[mitre88]

Hi maintainers! I've addressed the issues mentioned in the issues:

• Fixed xlsx output to handle None query_time properly
• Added validation for invalid timeout values (0, -5, non-numeric)
• Added regression tests

Would love to get feedback on this PR