[AMD Support via SemiAnalysis][4/4] Preserve failure logs and record runtime versions

[cquil11]

Changes

• Replace invalid UTF-8 when reading worker failure logs, so one malformed byte cannot hide the log tail.
• Record SGLang Router and MoRI package versions in runtime provenance.

The log-reading issue was identified during MI355X DeepSeek V4 SGLang validation: after a decode worker failed, strict UTF-8 decoding prevented printing its AITER log tail. This fixes failure reporting, not the underlying worker failure.

Upstream #476 and fork #14 contain the same changes. The fork PR sits on the branch-based AMD/MoRI/ATOM stack. Those three runtime layers have already merged upstream.

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Cursor Bugbot has reviewed your changes using default effort and found 1 potential issue.

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Log streaming reprints on each poll

Medium Severity

stream_log stores a text-mode tell() cookie in offset and later compares it to stat().st_size. That cookie is not a byte position, and progress-bar \r or a partial UTF-8 sequence at EOF makes it much larger than the file, so the next poll rewinds to the start and reprints the whole log. LogOutputStreamer already tracks a binary byte offset for this.

 

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[cquil11]

Closing because these failure-log and runtime-version changes were merged upstream in NVIDIA#476.