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VEX Delta Persistence Table

Status

IMPLEMENTED

Description

Persistent tracking of VEX status transitions between artifact versions with rationale and replay hashes. Schema designed but not implemented.

Why Marked as Dropped (Correction)

FINDING: VEX delta persistence IS implemented across multiple modules. The following exist:

  • src/Excititor/__Libraries/StellaOps.Excititor.Persistence/Postgres/Repositories/PostgresVexDeltaRepository.cs -- PostgreSQL VEX delta repository
  • src/VexLens/StellaOps.VexLens/Services/VexDeltaComputeService.cs -- VEX delta computation
  • src/VexLens/StellaOps.VexLens/Mapping/VexDeltaMapper.cs -- VEX delta data mapping
  • src/VexLens/StellaOps.VexLens/Storage/InMemoryConsensusProjectionStore.cs -- in-memory projection store
  • src/VexLens/StellaOps.VexLens.Persistence/Repositories/ConsensusProjectionRepository.cs -- persistent consensus projections
  • src/VexLens/StellaOps.VexLens.Persistence/Postgres/VexLensDataSource.cs -- PostgreSQL data source
  • src/SbomService/__Libraries/StellaOps.SbomService.Lineage/Repositories/VexDeltaRepository.cs -- SBOM lineage VEX delta tracking
  • src/SbomService/__Libraries/StellaOps.SbomService.Lineage/Persistence/Migrations/00001_InitialSchema.sql -- migration with VEX delta tables
  • Attestor proof chain predicates: VexDeltaPredicate.cs, VexDeltaSummary.cs, VexDeltaChange.cs, VexDeltaStatement.cs

Implementation Details

  • Excititor persistence: src/Excititor/__Libraries/StellaOps.Excititor.Persistence/Postgres/Repositories/PostgresVexDeltaRepository.cs
  • VexLens computation: src/VexLens/StellaOps.VexLens/Services/VexDeltaComputeService.cs
  • VexLens mapping: src/VexLens/StellaOps.VexLens/Mapping/VexDeltaMapper.cs
  • SbomService lineage: src/SbomService/__Libraries/StellaOps.SbomService.Lineage/Repositories/VexDeltaRepository.cs
  • Attestor predicates: src/Attestor/__Libraries/StellaOps.Attestor.ProofChain/Predicates/VexDelta*.cs

E2E Test Plan

  • Verify VEX delta computation tracks status transitions correctly
  • Test persistence and retrieval of VEX deltas
  • Validate consensus projection store maintains correct state
  • Test delta predicates are included in proof chain attestations

Source

  • Feature matrix scan

Notes

  • Module: Excititor
  • Modules referenced: src/Excititor/, src/VexLens/, src/SbomService/
  • Status should be reclassified from NOT_FOUND to IMPLEMENTED