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Add new features and tests for AirGap and Time modules
- Introduced `SbomService` tasks documentation.
- Updated `StellaOps.sln` to include new projects: `StellaOps.AirGap.Time` and `StellaOps.AirGap.Importer`.
- Added unit tests for `BundleImportPlanner`, `DsseVerifier`, `ImportValidator`, and other components in the `StellaOps.AirGap.Importer.Tests` namespace.
- Implemented `InMemoryBundleRepositories` for testing bundle catalog and item repositories.
- Created `MerkleRootCalculator`, `RootRotationPolicy`, and `TufMetadataValidator` tests.
- Developed `StalenessCalculator` and `TimeAnchorLoader` tests in the `StellaOps.AirGap.Time.Tests` namespace.
- Added `fetch-sbomservice-deps.sh` script for offline dependency fetching.
2025-11-20 23:29:54 +02:00

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# Mirror Thin Bundle Prep — PREP-MIRROR-CRT-56-001 (Draft)
Status: Draft (2025-11-20)
Owners: Mirror Guild (Assembler)
Scope: Capture requirements to start thin bundle v1 when upstream Sprint 110.D artefacts land.
## Dependencies
- Sprint 110.D assembler foundation (missing in repo).
- Trust root list and TUF metadata locations from release pipeline.
## Proposed thin bundle v1 shape
- Container: tar.gz deterministic; root manifest `mirror.thin.manifest.json`.
- Fields: `bundle_id`, `schema_version`=`mirror.thin.v1`, `created_at`, `source_registry`, `artifacts[] {digest, media_type, size}`, `trust_roots[]`, optional `attestations[]`.
- Merkle root over files for audit.
## Open decisions
- Exact artifact set included in “thin” scope (SBOM only vs SBOM+metadata).
- Required signatures (DSSE/Sigstore) and signer identities.
- Retention/GC policy for thin bundles.
## Handoff
Use this as the PREP artefact for PREP-MIRROR-CRT-56-001; update when assembler foundation drops so schema can be finalized and aligned with `docs/modules/mirror/thin-bundle-assembler.md`.