Additional RC Fixes

[NickGeneva]

Earth2Studio Pull Request

Description

Checklist

• I am familiar with the Contributing Guidelines.
• New or existing tests cover these changes.
• The documentation is up to date with these changes.
• The CHANGELOG.md is up to date with these changes.
• An issue is linked to this pull request.
• Assess and address Greptile feedback (AI code review bot for guidance; use discretion, addressing all feedback is not required).

Dependencies

[greptile-apps]

Greptile Summary

This PR contains minor release candidate fixes ahead of the 0.13.0 release, finalizing the changelog version string and cleaning up the smoke test configuration.

• CHANGELOG.md: Promotes the version from 0.13.0a0 (alpha, with a placeholder date) to 0.13.0 with a concrete release date of 2026-03-20. Two empty changelog sections (### Deprecated and ### Security) are removed to avoid clutter in the published release notes.
• tox-smoke.ini: Removes the NATTEN_CUDA_ARCH = "9.0;12.0" environment variable from the smoke test setenv block. This is consistent with dropping or no longer needing to force-build NATTEN for the target CUDA architectures (90;120 via FLASH_ATTN_CUDA_ARCHS).

Confidence Score: 5/5

• Safe to merge — changes are limited to documentation and CI configuration with no functional code impact.
• Both changes are low-risk: the CHANGELOG update is purely documentation, and removing NATTEN_CUDA_ARCH from the smoke test env simply stops passing an unnecessary (or removed) build variable. Neither change touches runtime logic.
• No files require special attention.

Important Files Changed

Filename	Overview
CHANGELOG.md	Finalizes version from 0.13.0a0 (alpha) to 0.13.0 with a release date of 2026-03-20, and removes two empty sections (### Deprecated, ### Security) to keep the changelog clean.
tox-smoke.ini	Removes the NATTEN_CUDA_ARCH environment variable from the smoke test configuration, likely because NATTEN support was dropped or the variable is no longer needed for the target CUDA architectures.

_{Last reviewed commit: "Changelog"}

[NickGeneva]

/blossom-ci