Add build-mode: manual to CodeQL init step

[Copilot]

Pull Request

Description

Ports TemplateDotNetLibrary#33 to this repository. The codeql-action/init step was missing an explicit build-mode, leaving CodeQL to infer the strategy despite the workflow already performing a manual dotnet build.

• .github/workflows/build.yaml: Added build-mode: manual to the github/codeql-action/init@v4 step

- name: Initialize CodeQL
  uses: github/codeql-action/init@v4
  with:
    languages: csharp
    build-mode: manual          # ← added
    queries: security-and-quality
    config-file: ./.github/codeql-config.yml

No functional change — makes existing intent explicit.

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
• Self-validation tests pass:
  dotnet run --project src/DemaConsulting.TemplateDotNetTool --configuration Release --framework net10.0
--no-build -- --validate
• 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

Mirrors change applied to TemplateDotNetLibrary#33.

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[Copilot]

Pull request overview

Updates the CodeQL initialization step in the CI workflow to explicitly use manual build mode, aligning the CodeQL job with the existing explicit dotnet build step in the workflow.

Changes:

• Add build-mode: manual to the github/codeql-action/init@v4 step in the CodeQL job.

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