chore: bring in updates from TemplateDotNetLibrary template repo

[Copilot]

Pull Request

Description

Syncs infrastructure files with the latest TemplateDotNetLibrary template.

.github/workflows/build.yaml

• Added macOS to build matrix ([windows-latest, ubuntu-latest, macos-latest])
• Added build-mode: manual to CodeQL init
• Added OTS self-validation steps for all tools (VersionMark, ReqStream, BuildMark, SarifMark, SonarMark) generating TRX proof files for requirements traceability
• Unified all job outputs under a single artifacts/ directory; simplified artifact downloads in build-docs job to a single artifacts-* pattern
• Added structured section comments throughout all jobs

.github/workflows/release.yaml

• Fixed artifact name: artifacts-ubuntu-latest → packages-ubuntu-latest to align with new build workflow naming

.github/ISSUE_TEMPLATE/question.yml

• Added missing ❓ Question/Help issue template

requirements.yaml

• Added macOS platform requirement (CACH-PLT-007) with macos@ test source filter
• Added macos@ source filter prefix to header comments
• Added OTS Software section with requirements for MSTest, ReqStream, BuildMark, VersionMark, SarifMark, and SonarMark

AGENTS.md

• Added Agent Selection Guide mapping common tasks to specialized agents
• Updated CI/CD description to include macOS
• Fixed encoding note: UTF-8+BOM → UTF-8
• Updated reqstream CI enforcement command path to artifacts/**/*.trx

CONTRIBUTING.md

• Fixed Assert.HasCount argument order to match MSTest v4 API: (expectedCount, collection)
• Fixed encoding note: UTF-8 with BOM → UTF-8

README.md

• Updated multi-platform feature to include macOS
• Updated multi-runtime feature to include .NET Standard 2.0
• Added new feature bullets: Linting Enforcement, Continuous Compliance, SonarCloud Integration, Requirements Traceability
• Added [link-continuous-compliance] reference

docs/guide/guide.md

• Added Continuous Compliance section with methodology link and key practices

.config/dotnet-tools.json

• Updated demaconsulting.reqstream 1.3.0 → 1.4.1

src/DemaConsulting.NuGet.Caching/DemaConsulting.NuGet.Caching.csproj

• Updated Polyfill 9.13.0 → 9.18.0

Type of Change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Documentation update
• Code quality improvement

Pre-Submission Checklist

Before submitting this pull request, ensure you have completed the following:

Build and Test

• Code builds successfully: dotnet build --configuration Release
• All unit tests pass: dotnet test --configuration Release
• Code produces zero warnings

Code Quality

• Code formatting is correct: dotnet format --verify-no-changes
• New code has appropriate XML documentation comments
• Static analyzer warnings have been addressed

Quality Checks

Please run the following checks before submitting:

• Spell checker passes: cspell "**/*.{md,cs}"
• Markdown linter passes: markdownlint "**/*.md"
• YAML linter passes: yamllint .

Testing

• Added unit tests for new functionality
• Updated existing tests if behavior changed
• All tests follow the AAA (Arrange, Act, Assert) pattern
• Test coverage is maintained or improved

Documentation

• Updated README.md (if applicable)
• Updated ARCHITECTURE.md (if applicable)
• Added code examples for new features (if applicable)
• Updated requirements.yaml (if applicable)

Additional Notes

Infrastructure-only changes; no production code or test logic modified.

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[Malcolmnixon]

@copilot Are you sure you found all changes - please check the template repos PRs. For example im not seeing the new macOS requirements which suggests you failed to track down all changes.

[Copilot]

@copilot Are you sure you found all changes - please check the template repos PRs. For example im not seeing the new macOS requirements which suggests you failed to track down all ch...

Good catch - I missed several changes from the template PRs. Commit 91bfd76 adds:

• requirements.yaml: macOS platform requirement (CACH-PLT-007) with macos@ test filter, plus a full OTS Software section (MSTest, ReqStream, BuildMark, VersionMark, SarifMark, SonarMark) matching template PR Bump the nuget-dependencies group with 2 updates #28 and feat: update to new Continuous Compliance standards — dedicated test suites, requirements hierarchy, reviewmark reviews #31
• .config/dotnet-tools.json: reqstream 1.4.0 → 1.4.1 (PR #34)
• DemaConsulting.NuGet.Caching.csproj: Polyfill 9.13.0 → 9.18.0 (PR #34)
• AGENTS.md: encoding note fixed (UTF-8+BOM → UTF-8); reqstream CI command updated to artifacts/**/*.trx
• README.md: multi-platform updated to include macOS; multi-runtime includes .NET Standard 2.0; new feature bullets and continuous-compliance link (PR fix: apply formal review fixes from code-review sub-agents #29)
• docs/guide/guide.md: Continuous Compliance section added (PR fix: apply formal review fixes from code-review sub-agents #29)
• CONTRIBUTING.md: encoding note fixed (UTF-8 with BOM → UTF-8)

[Copilot]

Pull request overview

This PR syncs this repository’s CI/CD and compliance infrastructure with the latest TemplateDotNetLibrary template, expanding platform coverage (macOS) and strengthening requirements/traceability and reporting outputs.

Changes:

• Updated GitHub Actions workflows to add macOS builds, unify outputs under artifacts/, and add OTS tool self-validation TRX evidence generation.
• Extended requirements.yaml with macOS platform requirements and an “OTS Software” section linking tools to evidence.
• Refreshed documentation and repo guidance (README/guide/agents/contributing) and bumped tool/dependency versions (ReqStream, Polyfill).

Reviewed changes

Copilot reviewed 10 out of 10 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
.github/workflows/build.yaml	Adds macOS to the build matrix, unifies CI artifacts under artifacts/, and adds OTS tool self-validation + tool version capture.
.github/workflows/release.yaml	Aligns downloaded package artifact name with the new build workflow naming.
.github/ISSUE_TEMPLATE/question.yml	Adds a Question/Help issue form template.
requirements.yaml	Adds macOS platform requirement and an OTS Software section with tool-related requirements tied to TRX evidence.
AGENTS.md	Updates repo agent guidance, CI/CD description (macOS), and ReqStream enforcement path to artifacts/**/*.trx.
CONTRIBUTING.md	Updates encoding guidance and corrects MSTest v4 Assert.HasCount argument order.
README.md	Updates feature list for macOS/.NET Standard 2.0 and adds compliance/traceability/quality feature bullets + link.
docs/guide/guide.md	Adds a Continuous Compliance section and link reference.
.config/dotnet-tools.json	Bumps demaconsulting.reqstream version.
src/DemaConsulting.NuGet.Caching/DemaConsulting.NuGet.Caching.csproj	Bumps Polyfill package version.

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