fix: validate simplify skill templates

[njzjz-bot]

Fixes #1918.

This makes every bundled dpgen-simplify JSON asset normalize against DP-GEN current simplify parameter and machine schemas. It also updates the skill guidance to keep machine.batch_type and resources.batch_type consistent and supplies a schema-valid no-op command for inactive FP stages.

Validation:

• python -m unittest tests.test_check_skill_assets tests.test_check_examples -v
• ruff check tests/test_check_skill_assets.py
• ruff format --check tests/test_check_skill_assets.py
• JSON syntax validation for every bundled asset

The skill quick validator still reports the pre-existing unsupported compatibility frontmatter key; that unrelated metadata issue is unchanged.

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

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Configuration used: Organization UI

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Run ID: 63ee78ae-cf5d-4fc3-8ab2-d367dd65e358

📥 Commits

Reviewing files that changed from the base of the PR and between d5ce577 and aa686f9.

📒 Files selected for processing (9)

• skills/dpgen-simplify/SKILL.md
• skills/dpgen-simplify/assets/machine.template.json
• skills/dpgen-simplify/assets/machine.template.local-shell.json
• skills/dpgen-simplify/assets/machine.template.server-local-slurm.json
• skills/dpgen-simplify/assets/machine.template.ssh-remote-slurm.json
• skills/dpgen-simplify/assets/param.example.qm7.from-official-docs.json
• skills/dpgen-simplify/assets/param.template.json
• skills/dpgen-simplify/references/machine-fields.md
• tests/test_check_skill_assets.py

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 49.80%. Comparing base (d5ce577) to head (aa686f9).

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #1950   +/-   ##
=======================================
  Coverage   49.80%   49.80%           
=======================================
  Files          83       83           
  Lines       14986    14986           
=======================================
  Hits         7464     7464           
  Misses       7522     7522           

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