DocumentTree v0 Spec.Simple Summary class

COUPLING PARTNERS

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• docs/DOCUMENT-TREE-V0-SPEC.md DocumentTree v0 Spec
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• docs/DOCUMENT-TREE-V0-SPEC.md DocumentTree v0 Spec.Proposed Phase Order.Phase 1E: Hosted MCP
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• docs/DOCUMENT-TREE-V0-SPEC.md DocumentTree v0 Spec.Proposed Phase Order
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• docs/DOCUMENT-TREE-V0-SPEC.md DocumentTree v0 Spec.Test Matrix
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• docs/DOCUMENT-TREE-V0-SPEC.md DocumentTree v0 Spec.Recommendation
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• docs/DOCUMENT-TREE-V0-SPEC.md DocumentTree v0 Spec.Test Matrix.End To End
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• docs/DOCUMENT-TREE-V0-SPEC.md DocumentTree v0 Spec.Files Expected By Future Phase.Phase 1E
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• docs/DOCUMENT-TREE-V0-SPEC.md DocumentTree v0 Spec.Test Matrix.Integration
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• docs/DOCUMENT-TREE-V0-SPEC.md DocumentTree v0 Spec.Security Invariants
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• docs/DOCUMENT-TREE-V0-SPEC.md DocumentTree v0 Spec.Security Invariants.Hosted MCP
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• docs/DOCUMENT-TREE-V0-SPEC.md DocumentTree v0 Spec.Proposed Phase Order.Phase 1B: Markdown Parser Integration
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• docs/DOCUMENT-TREE-V0-SPEC.md DocumentTree v0 Spec.Files Expected By Future Phase
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• docs/DOCUMENT-TREE-V0-SPEC.md DocumentTree v0 Spec.Technical Summary
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• docs/DOCUMENT-TREE-V0-SPEC.md DocumentTree v0 Spec.JSON Contract.Success Shape.code[json]@L278
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• docs/DOCUMENT-TREE-V0-SPEC.md DocumentTree v0 Spec.Files Expected By Future Phase.Later Metadata And Domain Phases
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