Sync with TemplateDotNetLibrary: macOS, Continuous Compliance, agent selection guide, CodeQL build-mode

[Copilot]

Pulls in five changes from the TemplateDotNetLibrary template (PRs #29–#33).

Changes

• macOS platform support — adds macos-latest to the build matrix, simplifies OS_SHORT sed to s/-latest//, adds SpdxModel-Plt-MacOS requirement, and documents macos@TestName source filter in AGENTS.md
• Continuous Compliance docs — adds feature bullets to README and a dedicated Continuous Compliance section to the user guide with a reference link
• Question issue template — new .github/ISSUE_TEMPLATE/question.yml for structured usage/help requests
• Agent Selection Guide — adds decision-tree section to AGENTS.md mapping common tasks to the right specialized agent
• CodeQL build-mode: manual — explicitly sets build-mode: manual on the Initialize CodeQL step

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

Related Issues

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)
• Added code examples for new features (if applicable)
• Updated requirements.yaml (if applicable)
• Updated XML documentation comments for changed APIs

Additional Notes

macOS test evidence (macos@…) will be satisfied once the expanded build matrix runs in CI.

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[Copilot]

Pull request overview

Syncs this repo with recent TemplateDotNetLibrary updates by expanding CI platform coverage (macOS), aligning requirements evidence, and documenting the “Continuous Compliance” approach and agent usage guidance.

Changes:

• Expanded CI build matrix to include macos-latest and added a macOS platform requirement with macOS-scoped test evidence.
• Added “Continuous Compliance” documentation to README and the user guide.
• Added a structured GitHub “Question / Help” issue form and expanded AGENTS.md with an agent selection guide.

Reviewed changes

Copilot reviewed 6 out of 6 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
requirements.yaml	Adds a macOS platform requirement and links it to macOS-scoped test evidence.
docs/guide/guide.md	Documents Continuous Compliance practices and adds a reference link.
README.md	Adds multi-platform and Continuous Compliance feature bullets.
AGENTS.md	Adds an agent selection decision guide and documents macos@TestName test source filtering.
.github/workflows/build.yaml	Adds macos-latest to the build matrix, simplifies OS_SHORT derivation, and sets CodeQL build-mode: manual.
.github/ISSUE_TEMPLATE/question.yml	Adds a new issue form for questions/help requests.

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[Copilot]

macos@TestName was added here, but the more detailed agent docs in .github/agents/ still list only windows@/ubuntu@ (and framework) filters. To keep guidance consistent for agents, update those docs to include macos@TestName as a supported source filter as well.