Review and update ARCHITECTURE.md

[Copilot]

Reviewed ARCHITECTURE.md against current source and updated it to reflect recent changes, improve accuracy, and restructure as a true high-level architecture overview.

Description

Accuracy fixes

• Added missing ResultsFile property to Context class definition (the --results CLI argument)
• Updated Requirements.Export() and ExportJustifications() signatures to include HashSet<string>? filterTags = null
• Updated TraceMatrix.Export(), CalculateSatisfiedRequirements(), and GetUnsatisfiedRequirements() signatures to include HashSet<string>? filterTags = null

New content

• Added ### How Circular Requirement References Are Prevented section documenting the DFS cycle detection in ValidateCycles() — the three tracking structures (visiting, path, visited), the error message produced, and why TraceMatrix.CollectAllTests() needs no cycle guard of its own
• Added SARIF to .cspell.json to silence pre-existing false-positive warnings

Structure

• Expanded ## Overview with three new subsections for a scope-zoom-in feel:
  • ### Components at a Glance — table of the four top-level components and their responsibilities
  • ### How the Components Fit Together — Mermaid flowchart TD diagram showing three inputs (YAML Files, Test Result Files, CLI Arguments) flowing through Requirements and TraceMatrix to two outputs (Markdown Reports, Exit Code)
  • ### Execution Flow at a Glance — five-item priority-ordered list with a forward reference to the detailed section
• Removed the hand-authored ## Table of Contents (viewers and document compilers generate their own)
• Trimmed document from 1163 lines to 410 lines: removed all C# code blocks, YAML usage examples, algorithm pseudocode, step-by-step internal walkthroughs, and repeated content so the document describes what components are and how they relate rather than how they are internally implemented
• Replaced ASCII-art block diagram with a Mermaid flowchart TD diagram for clearer rendering in GitHub; node label line-breaks use <br/> (correct Mermaid syntax)

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

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

No code changes — documentation and spell-check dictionary only.

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[Malcolmnixon]

The ARCHITECTURE.md is over 1100 lines long. That means it seems to have delved deeper into esoteric design details. An architecture is supposed to be a high-level view - identifying the main blocks of the application and how they work together, but not necessarily diving into the esoteric details of the blocks.

[Copilot]

The ARCHITECTURE.md is over 1100 lines long. That means it seems to have delved deeper into esoteric design details. An architecture is supposed to be a high-level view - identifying the main blocks o...

Addressed in a1157e6. The document has been trimmed from 1163 lines to 410 lines (65% reduction). Removed all C# code blocks, YAML usage examples, algorithm pseudocode, step-by-step internal walkthroughs, and repeated content. What remains is a proper architecture overview: what the components are, why they exist, and how they relate — with detail-heavy sections (like the DFS cycle detection and satisfaction criteria) reduced to prose + bullet descriptions.

[Malcolmnixon]

@copilot Would the ascii-art block diagram be better handled as a Mermaid diagram?

[Copilot]

@copilot Would the ascii-art block diagram be better handled as a Mermaid diagram?

Done in 6d3d3d1 — replaced the ASCII-art block with a Mermaid flowchart TD. GitHub renders it natively, so the diagram will display as a proper directed graph rather than text art.

[Malcolmnixon]

@copilot The '\n' in the mermaid diagrams don't produce line-breaks in the diagrams, but just appear as characters.

[Copilot]

@copilot The '\n' in the mermaid diagrams don't produce line-breaks in the diagrams, but just appear as characters.

Fixed in 8c4bcb4 — replaced all \n with <br/> in the Mermaid node labels, which is the correct syntax for line breaks in Mermaid diagrams.

[Copilot]

Pull request overview

Updates the project’s architecture documentation to be a higher-level overview aligned with the current ReqStream implementation, and adjusts the spell-check dictionary to avoid a known false positive.

Changes:

• Restructures ARCHITECTURE.md (overview-first, component summary, Mermaid diagrams) and removes detailed code/example walkthroughs.
• Updates documented APIs/behaviors (e.g., filtering parameters, cycle detection approach) to reflect current code.
• Adds SARIF to the cspell dictionary.

Reviewed changes

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

File	Description
ARCHITECTURE.md	Major restructure + accuracy updates for current components, flows, and behaviors
.cspell.json	Adds SARIF to reduce false-positive spellcheck findings

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