Used getter and setter for io_value_type%data attribute

[allynt]

PR Summary

Sci/Tech Reviewer:
Code Reviewer: Mike Hobson (@mike-hobson)

Now that the io_value_type%data attribute is private, access to it must be via getters and setter.

• linked Made io_value_type data attribute private lfric_core#337

Code Quality Checklist

• I have performed a self-review of my own code
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Testing

• I have tested this change locally, using the LFRic Apps rose-stem suite
• If any tests fail (rose-stem or CI) the reason is understood and acceptable (e.g. kgo changes)
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trac.log

Test Suite Results - lfric_apps - io_value_type_apps/run33

Suite Information

Item	Value
Suite Name	io_value_type_apps/run33
Suite User	allyn.treshansky
Workflow Start	2026-04-20T14:11:58
Groups Run	developer

Dependency	Reference	Main Like
casim	MetOffice/casim@2026.03.2	True
jules	MetOffice/jules@2026.03.2	True
lfric_apps	allynt/lfric_apps@io_value_type	False
lfric_core	allynt/lfric_core@io_value_type	True
moci	MetOffice/moci@2026.03.2	True
SimSys_Scripts	MetOffice/SimSys_Scripts@4387949	True
socrates	MetOffice/socrates@2026.03.2	True
socrates-spectral	MetOffice/socrates-spectral@2026.03.2	True
ukca	MetOffice/ukca@2026.03.2	True

Task Information

✅ succeeded tasks - 1165

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Performance Impact

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AI Assistance and Attribution

• Some of the content of this change has been produced with the assistance of Generative AI tool name (e.g., Met Office Github Copilot Enterprise, Github Copilot Personal, ChatGPT GPT-4, etc) and I have followed the Simulation Systems AI policy (including attribution labels)

Documentation

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PSyclone Approval

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Sci/Tech Review

• I understand this area of code and the changes being added
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• Documentation is sufficient (do documentation papers need updating)
• Sufficient testing has been completed

(Please alert the code reviewer via a tag when you have approved the SR)

Code Review

• All dependencies have been resolved
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• Tests are adequate and have passed
• Documentation is complete and accurate
• Security considerations have been addressed
• Performance impact is acceptable

[thomasmelvin]

Looks good to me