[AndreyVMarkelov]

Uploads that receive a 401 response with an explicit other authentication-error tag currently raise Stone's ValidationError, hiding the normal authentication exception and request ID. Decode these responses as AuthError.other, tolerate new authentication-error variants and fields, and preserve the original response body on AuthError.body for diagnosis. Existing two-argument AuthError construction remains compatible.

Refs #585. This fixes the SDK's error reporting; the cause of the original server rejection still needs investigation.

Validation:

• pytest test/unit/ -q: 118 passed, including seven regression cases through the upload request path. These cover explicit catch-all tags, unknown variants, known errors, and missing-scope details, and verify that non-expired authentication failures are not retried.
• Ruff lint and formatting checks passed for the repository sources, excluding the locally generated _version.py from formatting.
• Live integration tests were not run locally because test-account credentials are unavailable. This same-repository PR is eligible for the existing integration CI jobs.

Checklist

General Contributing

• Have you read the Code of Conduct and signed the CLA?

Is This a Code Change?

• Non-code related change (markdown/git settings etc)
• SDK Code Change
• Example/Test Code Change

Validation

• Does tox pass? (Full tox suite not run.)
• Do the tests pass?

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 65.36%. Comparing base (084bd9e) to head (691ed72).

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #620      +/-   ##
==========================================
+ Coverage   65.33%   65.36%   +0.02%     
==========================================
  Files          36       36              
  Lines       69148    69152       +4     
  Branches     4986     4987       +1     
==========================================
+ Hits        45180    45198      +18     
+ Misses      23716    23700      -16     
- Partials      252      254       +2     

Flag	Coverage Δ
integration	64.37% <75.00%> (+0.01%)	⬆️
unit	65.08% <100.00%> (+0.02%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

☔ View full report in Codecov by Harness.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.