chore(deps): AUT-952 bump Megatron-Core main ref

[svcnemo-autobot]

Background

Refresh the nightly Megatron-Core main pin from 58bf14e9 to a0462819.

What changed

• Update .main.commit and the Megatron-LM gitlink.
• Refresh the full uv.lock dependency set while retaining revision 2.
• Add the model verification card skill to the docs toctree.

Details

The full lock refresh advances compatible transitive releases. The docs entry fixes pre-existing main drift from #4909: its new skill page was not included in any toctree, causing release docs to fail with warnings treated as errors.

Tested

• uv lock --upgrade reproduced the committed lock with no diff.
• Locked sync, pre-commit, installation, wheel build, and wheel validation passed.
• Exact Sphinx --fail-on-warning gate is running on the docs fix.

[svcnemo-autobot]

/ok to test e375c01

[yaoyu-33]

MCore bump auto-fix status for main:

Classification: no code fix
Evidence: On 2026-07-22 at 07:02 PDT, PR #5020 head e375c016f11dee8bbce9e7d0f8f16a7566cdec8e has no failed check. Installation, lint, DCO, and wheel build/validation passed. The CICD container builds and release docs remain queued or in progress. The MCore range 58bf14e9e68915a5e0c7d70451620e6e713c07d5...a046281960c13d034267cf15cc3b689048a1be45 contains only GitHub workflow hardening and on-call schedule changes, with no Bridge runtime API change.
Fix PR: not opened
Guards: none
Validation: GitHub checks on the current head passed installation (UV - Python3.12 - AMD64/Linux - NGC PyTorch), lint, DCO, and release wheel build/validation; full CICD is non-terminal, so no CW interactive test was required or started.
Next action: let terminal CI finish; rerun the main auto-fix worker only if the current head develops an actionable failure.

[svcnemo-autobot]

💬 Agreed with the main auto-fix classification: PR #5020 still has no failed checks, installation/lint/DCO/wheel validation remain green, and authoritative CICD is non-terminal at container builds. No main code fix, guard, or retry is needed; I’m continuing to wait on terminal CI alongside the dev and companion MLM PRs.

[svcnemo-autobot]

/ok to test 19012c6