Add graph JSON references and prefixes

[ollieatkinson]

Adds graph JSON reference metadata, ordered JSON dictionaries for generated contracts, and configurable generated type prefixes for Swift, Kotlin, and TypeScript output.

Validation:

• swift test --filter JSONClasses™ --filter SourceIdentifierTests --filter SwiftLexiconGeneratorTests --filter SwiftStandAloneGeneratorTests --filter KotlinStandAloneGeneratorTests --filter TypeScriptStandAloneGeneratorTests --filter LexiconGeneratorsTests

[chatgpt-codex-connector]

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[Copilot]

Pull request overview

This PR extends the lexicon “graph JSON” contract with reference metadata and ordered JSON dictionaries, and adds configurable generated type prefixes across Swift, Kotlin, and TypeScript generators (including CLI wiring and updated tests).

Changes:

• Add references to Lexicon.Graph.JSON / Lexicon.Graph.Node.Class.JSON, plus OrderedJSONDictionary for stable key ordering in generated JSON.
• Introduce StandAloneTypePrefixes and thread customizable prefixes through SwiftLexicon / SwiftStandAlone / KotlinStandAlone / TypeScriptStandAlone generators.
• Update lexicon-generate CLI options and expand generator test coverage for custom prefixes and new JSON behaviors.

Reviewed changes

Copilot reviewed 12 out of 12 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
Tests/LexiconGeneratorsTests/StandAloneGeneratorTests.swift	Adds tests validating custom class/protocol prefixes across Swift/Kotlin/TypeScript generators.
Tests/LexiconGeneratorsTests/SourceIdentifierTests.swift	Updates prefix API usage and adds coverage for separating base symbols (L/I) from generated prefixes.
Tests/LexiconGeneratorsTests/JSONClassesTests.swift	Switches from raw JSON string equality to decoding assertions; validates references and ordered dictionary output.
Sources/LexiconGenerators/SwiftTypeDeclarations.swift	Threads StandAloneTypePrefixes through Swift type declaration generation.
Sources/LexiconGenerators/SwiftProperties.swift	Threads StandAloneTypePrefixes through Swift property generation.
Sources/LexiconGenerators/SwiftLexiconGenerator.swift	Adds generateSource(..., prefixes:) overload and uses prefixes for root/type naming.
Sources/LexiconGenerators/StandAlone/TypeScriptStandAloneGenerator.swift	Adds prefix-configurable generation and updates internal helpers to use StandAloneTypePrefixes.
Sources/LexiconGenerators/StandAlone/SwiftStandAloneGenerator.swift	Adds generateSource(..., prefixes:) overload and uses prefixes for root/type naming.
Sources/LexiconGenerators/StandAlone/KotlinStandAloneGenerator.swift	Adds generateSource(..., prefixes:) overload and uses prefixes for root/type naming.
Sources/LexiconGenerators/SourceIdentifier.swift	Introduces StandAloneTypePrefixes and updates naming logic to keep base symbols distinct.
Sources/Lexicon/Lexicon.Graph.JSON.swift	Adds ordered dictionary type, references computation, and updates JSON model to include references and ordered maps.
Sources/lexicon-generate/CodeGenerator.swift	Adds CLI options for class/protocol prefixes and routes them into supported generators.

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