semi implemented and features implemented save checkpoint

docs/features/unchecked/sbomservice/sbom-verdict-linking-table.md

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+# SBOM-Verdict Linking Table
+
+## Module
+SbomService
+
+## Status
+IMPLEMENTED
+
+## Description
+Join table linking SBOM versions to VEX consensus verdicts per CVE. Fully implemented with PostgreSQL persistence, in-memory test implementation, and lineage integration.
+
+## Implementation Details
+- **Persistence interface (Persistence layer)**: `src/SbomService/__Libraries/StellaOps.SbomService.Persistence/Repositories/ISbomVerdictLinkRepository.cs` -- `LinkAsync`, `LinkBatchAsync`, `GetVerdictsBySbomAsync`, `GetSbomsByCveAsync`, `GetSbomsByStatusAsync`
+- **Postgres implementation**: `src/SbomService/__Libraries/StellaOps.SbomService.Persistence/Postgres/Repositories/PostgresSbomVerdictLinkRepository.cs` -- PostgreSQL verdict link storage with upsert on conflict
+- **Lineage interface**: `src/SbomService/__Libraries/StellaOps.SbomService.Lineage/Repositories/ISbomVerdictLinkRepository.cs` -- lineage-layer verdict link contract
+- **Lineage Postgres implementation**: `src/SbomService/__Libraries/StellaOps.SbomService.Lineage/Repositories/SbomVerdictLinkRepository.cs` -- `sbom.sbom_verdict_links` table with columns: sbom_version_id, cve, consensus_projection_id, verdict_status, confidence_score, tenant_id; upsert on `(sbom_version_id, cve, tenant_id)` conflict
+- **Schema migration**: `src/SbomService/__Libraries/StellaOps.SbomService.Lineage/Persistence/Migrations/00001_InitialSchema.sql` -- creates `sbom_verdict_links` table
+- **DI registration**: `src/SbomService/__Libraries/StellaOps.SbomService.Lineage/DependencyInjection/ServiceCollectionExtensions.cs` -- registers verdict link repository
+- **Lineage domain**: `src/SbomService/__Libraries/StellaOps.SbomService.Lineage/Domain/LineageModels.cs` -- `SbomVerdictLink` model
+- **Tests**: `src/SbomService/__Tests/StellaOps.SbomService.Lineage.Tests/Domain/LineageModelsTests.cs`
+- **Source**: Feature matrix scan
+
+## E2E Test Plan
+- [ ] Verify SBOM-to-verdict linking creates records in `sbom_verdict_links` table
+- [ ] Test batch linking of multiple verdicts per SBOM version
+- [ ] Verify query by CVE returns all linked SBOM versions
+- [ ] Test query by verdict status with limit parameter
+- [ ] Verify upsert behavior on `(sbom_version_id, cve, tenant_id)` conflict