Notebooks Cleanup

[peterdsharpe]

PhysicsNeMo Pull Request

Description

Strips "execution count" from IPYNB jsons for display cleanliness.

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.
• If I am implementing a new model or modifying any existing model, I have followed the Models Implementation Coding Standards.

Dependencies

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[peterdsharpe]

/blossom-ci

[greptile-apps]

Greptile Summary

This PR nullifies execution_count fields (setting them from non-null integers to null) across six mesh tutorial notebooks for cleaner display in version control diffs. All outputs are preserved unchanged.

• All six notebooks also have their recorded Python kernel version changed from 3.13.8 to 3.12.12, which is not mentioned in the PR description and appears to be a side effect of re-saving the notebooks in a different local environment.
• The execution count cleanup itself is idiomatic and follows standard notebook hygiene practices.

Important Files Changed

Filename	Overview
examples/minimal/mesh/tutorial_1_getting_started.ipynb	Sets 6 execution_count values to null and downgrades recorded kernel version from 3.13.8 to 3.12.12
examples/minimal/mesh/tutorial_2_operations.ipynb	Sets 1 execution_count to null and downgrades recorded kernel version from 3.13.8 to 3.12.12
examples/minimal/mesh/tutorial_3_calculus.ipynb	Sets 5 execution_count values to null and downgrades recorded kernel version from 3.13.8 to 3.12.12
examples/minimal/mesh/tutorial_4_neighbors_spatial.ipynb	Sets 1 execution_count to null and downgrades recorded kernel version from 3.13.8 to 3.12.12
examples/minimal/mesh/tutorial_5_quality_repair.ipynb	Sets 3 execution_count values to null and downgrades recorded kernel version from 3.13.8 to 3.12.12
examples/minimal/mesh/tutorial_6_ml_integration.ipynb	Sets 4 execution_count values to null and downgrades recorded kernel version from 3.13.8 to 3.12.12

_{Reviews (1): Last reviewed commit: "removes execution count for cleanliness" | Re-trigger Greptile}

[peterdsharpe]

/blossom-ci

[peterdsharpe]

/blossom-ci

[peterdsharpe]

/ok to test 4332a04

[peterdsharpe]

/blossom-ci

[peterdsharpe]

/ok to test 87b1e0d

[peterdsharpe]

/blossom-ci

[peterdsharpe]

/blossom-ci

[peterdsharpe]

/ok to test 09344d9

[peterdsharpe]

/blossom-ci

[peterdsharpe]

/ok to test 2b5e754