Align self-validation output with TemplateDotNetTool formatting

[Copilot]

Pull Request

Description

Self-validation console output used friendly descriptions (Requirements Processing Test - PASSED) instead of actual test names, inconsistent with the pattern established in TemplateDotNetTool#51.

Validation.cs

• Print actual test names in pass/fail lines: ✓ ReqStream_RequirementsProcessing - Passed
• Consistent title-case Passed/Failed throughout (including HandleTestException)

docs/guide/guide.md

• Renamed ### Running Self-Validation → ### Running Validation
• Added ### Validation Report subsection with example output using actual test names
• Added ### Validation Tests subsection listing each test with a one-line proof statement

README.md

• Added ## Self Validation section with example report block, per-test descriptions, link to User Guide, and exit-code failure note

ProgramTests.cs

• Updated assertions to match new output format

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.ReqStream --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

Validation output now matches the console/log/README/guide example exactly:

✓ ReqStream_RequirementsProcessing - Passed
✓ ReqStream_TraceMatrix - Passed
✓ ReqStream_ReportExport - Passed
✓ ReqStream_TagsFiltering - Passed
✓ ReqStream_EnforcementMode - Passed

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