Add separate pipeline to check output against ESGF QA

[Claude]

Thanks for asking me to work on this. I will get started on it and keep this PR's description up to date as I form a plan and make progress.

---

This section details on the original issue you should resolve

<issue_title>pipeline that checks output against https://github.com/ESGF/esgf-qa</issue_title>
<issue_description>https://github.com/ESGF/esgf-qa

separate pipeline

can be used on the current unit-test output to start</issue_description>

Comments on the Issue (you are @claude[agent] in this section)

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.

@@           Coverage Diff           @@
##             main      #41   +/-   ##
=======================================
  Coverage   95.03%   95.03%           
=======================================
  Files          10       10           
  Lines        1310     1310           
=======================================
  Hits         1245     1245           
  Misses         65       65           

---

Continue to review full report in Codecov by Sentry.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 68ab12a...2a76a38. Read the comment docs.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.

[ilaflott]

add esgf_qa directly to the package requirements and env, lets see if they're compatible

[ilaflott]

target the environment.yaml for this repo

[Claude]

Updated to use environment-file: environment.yaml in the Setup Conda step, following the pattern from pylint.yml. Removed manual dependency installation. (2a69df6)

[Claude]

add esgf_qa directly to the package requirements and env, lets see if they're compatible

Done. Added esgf-qa to environment.yaml as a pip dependency and to pyproject.toml as an optional qa dependency. (2a69df6)