[codex] Fix RBench notebook root after generator move

[mli0603]

Summary

• Rebase onto latest main, which already moves RBench to evaluation/cosmos3/generator/rbench.
• Update the RBench notebook RBENCH_NOTEBOOK_ROOT so it resolves local assets from the new generator evaluation location.

Validation

• jq empty evaluation/cosmos3/generator/rbench/run_with_cosmos_framework.ipynb
• jq empty evaluation/cosmos3/generator/rbench/assets/prompts/*.json
• Confirmed no stale old-location notebook/path references with rg.
• GitHub reports mergeable: true for PR [codex] Fix RBench notebook root after generator move #229.

[yaoxu-crypto]

The path should be NVIDIA/cosmos/evaluation/cosmos3/Rbench. "cosmos3/Rbench" should be under "evaluation".

[mli0603]

@yaoxu-crypto great catch and fixed.

[yaoxu-crypto]

It's still incorrect. Should be "/evaluation/cosmos3/Rbench", not "cosmos3/evaluation/Rbench"

[mli0603]

@yaoxu-crypto triple-check please?

[yaoxu-crypto]

Now it's correct. But I just realized that Ming-Yu asked for subfolders under /evaluation/cosmos3/, which is "generator", "reasoner", and I believe also "action". See his comment on this doc: https://docs.google.com/document/d/1lEvHJugjCTHuSHgVwE00lsfF33SKVPw8WpX-TCwQ6WY/edit?tab=t.4909uyl57xqa
Maybe let's wait for him to confirm that we also need an "action" folder?

[lfengad]

Overall LGTM! Considering to be consistent with existing layout. Maybe the folder should be evaluation/cosmos3/generator/rbench? @yaoxu-crypto

[yaoxu-crypto]

I think it makes more sense to be evaluation/cosmos3/action/rbench. But I'd like to defer it to you @mli0603

[mli0603]

@lfengad @yaoxu-crypto changed to evaluation/cosmos3/generator/rbench, as this is a generator capability for video.