Update PR template with AI attribution checks

.github/pull_request_template.md

@@ -1,6 +1,8 @@
 # PR Summary
 
-Sci/Tech Reviewer: <!-- SR id, filled by author when ready for review (e.g. @octocat) -->
+**One-line Summary**
+
+Sci/Tech Reviewer: <!-- SR id, filled by author when ready for review (e.g. @octocat) -->  
 Code Reviewer: <!-- CR id, filled by SSD/CCD (e.g. @octocat) -->
 
 <!-- To be completed by the developer -->
@@ -20,72 +22,93 @@ Code Reviewer: <!-- CR id, filled by SSD/CCD (e.g. @octocat) -->
 - is related to #issue-number
 -->
 
-## Code Quality Checklist
+## :memo: Code Quality Checklist
 
-- [ ] I have performed a self-review of my own code
-- [ ] My code follows the project's [style guidelines](https://metoffice.github.io/lfric_core/how_to_contribute/index.html#how-to-contribute-index)
-- [ ] Comments have been included that aid understanding and enhance the readability of the code
-- [ ] My changes generate no new warnings
-- [ ] All automated checks in the CI pipeline have completed successfully
+- [ ] I have performed a self-review of my own code.
+- [ ] My code follows the project's [style guidelines](https://metoffice.github.io/lfric_core/how_to_contribute/index.html#how-to-contribute-index).
+- [ ] Comments have been included that aid understanding and enhance the readability of the code.
+- [ ] My changes generate no new warnings.
+- [ ] All automated checks in the CI pipeline have completed successfully.
 
-## Testing
+## :test_tube: 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)
-- [ ] I have added tests to cover new functionality as appropriate (e.g. system tests, unit tests, etc.)
-- [ ] Any new tests have been assigned an appropriate amount of compute resource and have been allocated to an appropriate testing group (i.e. the developer tests are for jobs which use a small amount of compute resource and complete in a matter of minutes)
+- [ ] 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).
+- [ ] I have added tests to cover new functionality as appropriate (e.g. system tests, unit tests, etc.).
+- [ ] Any new tests have been assigned an appropriate amount of compute resource and have been allocated to an appropriate testing group (i.e., the developer tests are for jobs which use a small amount of compute resource and complete in a matter of minutes).
 
 <!-- Describe other testing performed (if applicable) -->
 
 ### trac.log
 
 <!-- Paste your trac.log from testing output here -->
 
-## Security Considerations
+## :shield: 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).
+
+## :zap: Performance Impact
+
+- [ ] Performance of the code has been considered and, if applicable, suitable performance measurements have been conducted.
+
+## :robot: Generative AI Declaration
+
+**Did you use any Generative AI tools (e.g., GitHub Copilot, ChatGPT) to assist in writing, refactoring, or optimising code for this PR?**
+
+- [ ] **No.** This code was written entirely manually.
+- [ ] **Yes.** (If yes, please complete the verification items below).
 
-- [ ] I have reviewed my changes for potential security issues
-- [ ] Sensitive data is properly handled (if applicable)
-- [ ] Authentication and authorisation are properly implemented (if applicable)
+<details>
+<summary><b>Click here to expand the AI Usage Verification Checklist</b></summary>
 
-## Performance Impact
+### AI Usage Verification
 
-- [ ] Performance of the code has been considered and, if applicable, suitable performance measurements have been conducted
+*Only check the boxes below if they are true. If any box cannot be checked, your PR will be automatically rejected.*
 
-## AI Assistance and Attribution
+- [ ] **Indemnified Tool:** The tool used is an approved, enterprise/institutional tier model that provides IPR indemnity (e.g., *Met Office GitHub Copilot Enterprise*). 
+- [ ] **No Free/Personal Tiers:** I confirm that **no** free or personal tier AI tools (which lack legal protection and IPR indemnity) were used.
+- [ ] **In-File Attribution:** I have added the required `# Some of the content of this file...` comment block following the [Simulation Systems AI policy](https://metoffice.github.io/simulation-systems/FurtherDetails/ai.html).
+- [ ] **Commit Attribution:** I have explicitly noted the tool's usage within my git commit messages.
+- [ ] **Code Responsibility:** I have personally reviewed, tested, and understood all AI-assisted sections, and I take full responsibility for its logic, security, and IPR compliance.
 
-- [ ] 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)
+**Specific Tool(s) Used:**
 
-<!-- If AI has been used, please provide more details here -->
+*(e.g., Met Office GitHub Copilot Enterprise, [Institution Name] GitHub Copilot Enterprise, etc.)*
+> 
+</details>
 
-## Documentation
+## :book: Documentation
 
-- [ ] Where appropriate I have updated documentation related to this change and confirmed that it builds correctly
+- [ ] Where appropriate I have updated documentation related to this change and confirmed that it builds correctly.
 
-## PSyclone Approval
+## :cyclone: PSyclone Approval
 
-- [ ] If you have edited any PSyclone-related code (e.g. PSyKAl-lite, Kernel interface, optimisation scripts, LFRic data structure code) then please contact the [TCD Team](mailto:ToolsCollabDevTeam@metoffice.gov.uk)
+- [ ] If you have edited any PSyclone-related code (e.g. PSyKAl-lite, Kernel interface, optimisation scripts, LFRic data structure code) then please contact the [TCD Team](mailto:ToolsCollabDevTeam@metoffice.gov.uk).
 
-# Sci/Tech Review
+## :microscope: 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
+- [ ] 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
+## :computer: 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
+- [ ] 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.
+- [ ] PR complies with the [Simulation Systems AI policy](https://metoffice.github.io/simulation-systems/FurtherDetails/ai.html).