More refactor cleanup tasks

[sjmonson]

Summary

Handles a bunch of missing pieces from the refactor. See individual commits below.

Test Plan

• Check that --labels are applied to output
• Verify --profile ...,sample_requests=# results in a downsampling of requests in output
• Check guidellm run --help to ensure that the new help messages exists and are helpful.

Related Issues

• Resolves feat: Add --output-extras CLI flag for user-defined report metadata #728

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git log

commit 3ba2d67
Author: Samuel Monson smonson@redhat.com
Date: Tue Jun 23 16:38:37 2026 -0400

Move sample_requests to profile

Assisted-by: GitHub Copilot GPT-4.1
Signed-off-by: Samuel Monson <smonson@redhat.com>

commit 0116efc
Author: Samuel Monson smonson@redhat.com
Date: Tue Jun 23 16:43:05 2026 -0400

Move prefer_response_metrics back to settings

Signed-off-by: Samuel Monson <smonson@redhat.com>

commit 20a1dcd
Author: Samuel Monson smonson@redhat.com
Date: Wed Jun 24 14:20:06 2026 -0400

Add help message to --override

Assisted-by: GitHub Copilot GPT-4.1
Signed-off-by: Samuel Monson <smonson@redhat.com>

commit 882fb54
Author: Samuel Monson smonson@redhat.com
Date: Wed Jun 24 15:18:41 2026 -0400

Add label CLI option

Wires the label metadata field to the CLI.

Assisted-by: GitHub Copilot GPT-4.1
Signed-off-by: Samuel Monson <smonson@redhat.com>

commit 56b612f
Author: Samuel Monson smonson@redhat.com
Date: Thu Jun 25 14:49:12 2026 -0400

Rename request_samples to sample_size

Signed-off-by: Samuel Monson <smonson@redhat.com>

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Assisted-by: GitHub Copilot GPT-4.1
Signed-off-by: Samuel Monson smonson@redhat.com

[dbutenhof]

Reluctantly, since it beats blocking the option entirely...

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[dbutenhof]

OK, so sample_requests = benchmark_args.profile.sample_size is a little weird; but that's all internal so no big deal.