fix: reject non-finite model deviations

[njzjz-bot]

Summary

• validate all six LAMMPS model-deviation columns before recording them
• reject NaN and infinity values with the source artifact, row, and metric
• prevent invalid values from silently becoming adaptive trust levels

Tests

• PYTHONPATH=tests python -m unittest -v tests.exploration.test_traj_render_lammps
• ruff format --check dpgen2/exploration/render/traj_render_lammps.py tests/exploration/test_traj_render_lammps.py
• isort --check-only dpgen2/exploration/render/traj_render_lammps.py tests/exploration/test_traj_render_lammps.py
• git diff --check

Closes #276

Coding agent: Codex
Codex version: codex-cli 0.149.0
Model: gpt-5.6-sol
Reasoning effort: xhigh

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📥 Commits

Reviewing files that changed from the base of the PR and between 6b01f29 and 22f50a2.

📒 Files selected for processing (2)

• dpgen2/exploration/render/traj_render_lammps.py
• tests/exploration/test_traj_render_lammps.py

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 84.44%. Comparing base (6b01f29) to head (22f50a2).

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #389      +/-   ##
==========================================
+ Coverage   84.43%   84.44%   +0.01%     
==========================================
  Files         104      104              
  Lines        6110     6115       +5     
==========================================
+ Hits         5159     5164       +5     
  Misses        951      951              

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