Main to Stable, 2025.12

.gitattributes

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+# NetCDF CDL (Common Data Language)
+*.[pqt] linguist-language=CDL

.github/pull_request_template.md

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+# PR Summary
+
+Sci/Tech Reviewer: <!-- SR id, filled when known -->
+Code Reviewer: <!-- CR id, filled by SSD -->
+
+<!-- To be completed by the developer -->
+
+<!-- Provide a brief description of the changes in this PR, including any notes
+     useful for reviewers -->
+
+<!-- List any linked PRs here
+- linked MetOffice/<REPO-NAME>#<pr-number>
+-->
+
+<!-- List any blocking PRs or issues to be closed here
+- is blocked-by #pr-number
+- blocks #pr-number
+- closes #issue-number
+- fixes #issue-number
+- is related to #issue-number
+-->
+
+## Code Quality Checklist
+
+(_Some checks are automatically carried out via the CI pipeline_)
+
+- [ ] I have performed a self-review of my own code
+- [ ] My code follows the project's style guidelines
+- [ ] Comments have been included that aid undertanding and enhance the
+      readability of the code
+- [ ] My changes generate no new warnings
+
+## Testing
+
+- [ ] If shared files have been modified, I have run the UM and LFRic Apps rose
+      stem suites
+- [ ] If any tests fail (rose-stem or CI) the reason is understood and
+      acceptable (eg. kgo changes)
+- [ ] I have added tests to cover new functionality as appropriate (eg. system
+      tests, unit tests, etc.)
+
+<!-- Describe other testing performed (if applicable) -->
+
+### trac.log
+
+<!-- Paste your trac.log from testing output here -->
+
+## Security Considerations
+
+- [ ] I have reviewed my changes for potential security issues
+- [ ] Sensitive data is properly handled (if applicable)
+- [ ] Authentication and authorisation are properly implemented (if applicable)
+
+## Performance Impact
+
+- [ ] Performance of the code has been considered and, if applicable, suitable
+      performance measurements have been conducted
+
+## 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](https://metoffice.github.io/simulation-systems/FurtherDetails/ai.html)
+      (including attribution labels)
+
+<!-- If AI has been used, please provide more details here -->
+
+## Documentation
+
+- [ ] Where appropriate I have updated documentation related to this change and
+      confirmed that it builds correctly
+
+# Sci/Tech Review
+
+<!-- To be completed by the Sci/Tech Reviewer -->
+<!-- May be skipped for trivial tickets -->
+
+- [ ] I understand this area of code and the changes being added
+- [ ] The proposed changes correspond to the pull request description
+- [ ] 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
+
+<!-- To be completed by the Code Reviewer -->
+
+- [ ] All dependencies have been resolved
+- [ ] Related Issues have been properly linked and addressed
+- [ ] CLA compliance has been confirmed
+- [ ] Code quality standards have been met
+- [ ] Tests are adequate and have passed
+- [ ] Documentation is complete and accurate
+- [ ] Security considerations have been addressed
+- [ ] Performance impact is acceptable

.github/workflows/check-cr-approved.yaml

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+name: Check CR approved
+
+on:
+    pull_request_review:
+        types: [submitted, edited, dismissed]
+    workflow_dispatch:
+
+jobs:
+    check_cr_approved:
+        if: ${{ github.event.pull_request.number }}
+        uses: MetOffice/growss/.github/workflows/check-cr-approved.yaml@main

.github/workflows/cla-check.yaml

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+name: Legal
+
+on:
+  pull_request_target:
+
+jobs:
+  cla:
+    uses: MetOffice/growss/.github/workflows/cla-check.yaml@main
+    with:
+      runner: 'ubuntu-24.04'

.gitignore

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+__pycache__
+.vscode
+.idea
+*.pyc
+.pytest_cache

CONTRIBUTORS.md

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+# Contributors
+
+| GitHub user | Real Name | Affiliation | Date |
+| ----------- | --------- | ----------- | ---- |
+| james-bruten-mo | James Bruten | Met Office | 2025-12-09 |

LICENCE

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+BSD 3-Clause Licence
+
+Crown Copyright (c) Met Office
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+
+1. Redistributions of source code must retain the above copyright notice, this
+   list of conditions and the following disclaimer.
+
+2. Redistributions in binary form must reproduce the above copyright notice,
+   this list of conditions and the following disclaimer in the documentation
+   and/or other materials provided with the distribution.
+
+3. Neither the name of the copyright holder nor the names of its
+   contributors may be used to endorse or promote products derived from
+   this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.