test(shared): add tests for architecture+pattern spectral rules

[markscott-ms]

Description

Add tests for spectral rules relating to architectures and patterns.

This increases the overall test coverage for the shared module above 90%.

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 style/formatting changes
• ♻️ Refactoring (no functional changes)
• ⚡ Performance improvements
• ✅ Test additions or updates
• 🔧 Chore (maintenance, dependencies, CI, etc.)

Affected Components

• CLI (cli/)
• Shared (shared/)
• CALM Widgets (calm-widgets/)
• CALM Hub (calm-hub/)
• CALM Hub UI (calm-hub-ui/)
• Documentation (docs/)
• VS Code Extension (calm-plugins/vscode/)
• Dependencies
• CI/CD

Commit Message Format ✅

Testing

• I have tested my changes locally
• I have added/updated unit tests
• All existing tests pass

Checklist

• My commits follow the conventional commit format
• I have updated documentation if necessary
• I have added tests for my changes (if applicable)
• My changes follow the project's coding standards

[Copilot]

Pull request overview

This PR adds comprehensive test coverage for spectral validation functions in both the architecture and pattern modules, increasing the shared module's test coverage above 90%. The tests validate various ID existence checks and uniqueness constraints used in CALM (Common Architecture Language Model) document validation.

Key Changes

• Added test suites for node and interface ID validation functions in both architecture and pattern contexts
• Added test coverage for ID uniqueness validation across nodes, relationships, and interfaces
• Fixed a syntax issue in architecture/ids-are-unique.ts by removing an incorrect semicolon after a function declaration

Reviewed changes

Copilot reviewed 8 out of 8 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
shared/src/spectral/functions/pattern/interface-id-exists.spec.ts	Tests validation that interface IDs exist in pattern schema structures
shared/src/spectral/functions/pattern/interface-id-exists-on-node.spec.ts	Tests validation that interface IDs exist on specific nodes in pattern schemas
shared/src/spectral/functions/pattern/ids-are-unique.spec.ts	Tests uniqueness validation for IDs across nodes, relationships, and interfaces in pattern schemas
shared/src/spectral/functions/architecture/node-id-exists.spec.ts	Tests validation that node IDs exist in architecture documents
shared/src/spectral/functions/architecture/interface-id-exists.spec.ts	Tests validation that interface IDs exist in architecture documents
shared/src/spectral/functions/architecture/interface-id-exists-on-node.spec.ts	Tests validation that interface IDs exist on specific nodes in architecture documents
shared/src/spectral/functions/architecture/ids-are-unique.spec.ts	Tests uniqueness validation for IDs across nodes, relationships, and interfaces in architecture documents
shared/src/spectral/functions/architecture/ids-are-unique.ts	Fixed syntax error by removing incorrect semicolon after named function declaration

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