docs: add machine-readable Rules of Engagement template appendix

[Hinotoi-agent]

Summary

• add a non-normative Rules of Engagement template appendix with YAML/JSON examples
• link the appendix from the standard README and the Scope Enforcement implementation guide
• extend the Vendor Evaluation Guide with a concrete RoE artifact review prompt

Why

Issue #7 asks for a practical machine-readable Rules of Engagement starter template that customers, implementers, and reviewers can use consistently without turning one file format into a mandatory requirement.

Affected sections

• standard/appendix/Rules_of_Engagement_Template.md
• standard/README.md
• standard/1_Scope_Enforcement/Implementation_Guide.md
• standard/appendix/Vendor_Evaluation_Guide.md

Contributing.md checklist

• describe what changed and why: included above
• link related issue: Closes Proposal: add a machine-readable Rules of Engagement template #7
• list affected sections: included above
• formatting and links: checked locally for the touched Markdown files
• AI assistance disclosure: drafted with AI assistance and reviewed by the submitting human

Notes

• informative appendix only; no new normative requirements added
• writing kept vendor-neutral and organization-neutral
• terminology follows the existing style guide

Closes #7

[jinsonvarghese]

@Hinotoi-agent Thank you. It directly supports APTS-SE-001 and the field mappings to requirement IDs are a good addition.

However, there are two changes needed before a merge:

1. A row needs to be added for the new appendix in standard/Getting_Started.md under the Document Map table
2. Consider adding an XML example alongside YAML and JSON, since APTS-SE-001 verification references all three formats

[Hinotoi-agent]

Thanks — I addressed both requested changes:

• added a Document Map row for the new appendix in standard/Getting_Started.md
• added an XML example alongside the YAML and JSON examples

I also removed the cross-cutting standard/README.md and Vendor_Evaluation_Guide.md edits from this branch to reduce merge conflicts with the other appendix PRs.

Updated on commit 2ff72c6.