# Bundle Catalog & Items Repositories (prep for AIRGAP-IMP-57-001)

## Scope
- Deterministic storage for offline bundle metadata with tenant isolation (RLS) and stable ordering.
- Ready for Mongo-backed implementation while providing in-memory deterministic reference behavior.

## Schema (logical)
- `bundle_catalog`:
  - `tenant_id` (string, PK part, RLS partition)
  - `bundle_id` (string, PK part)
  - `digest` (hex string)
  - `imported_at_utc` (datetime)
  - `content_paths` (array of strings, sorted ordinal)
- `bundle_items`:
  - `tenant_id` (string, PK part, RLS partition)
  - `bundle_id` (string, PK part)
  - `path` (string, PK part)
  - `digest` (hex string)
  - `size_bytes` (long)

## Implementation delivered (2025-11-20)
- In-memory repositories enforcing tenant isolation and deterministic ordering:
  - `InMemoryBundleCatalogRepository` (upsert + list ordered by `bundle_id`).
  - `InMemoryBundleItemRepository` (bulk upsert + list ordered by `path`).
- Models: `BundleCatalogEntry`, `BundleItem`.
- Tests cover upsert overwrite semantics, tenant isolation, and deterministic ordering (`tests/AirGap/StellaOps.AirGap.Importer.Tests/InMemoryBundleRepositoriesTests.cs`).

## Migration notes (for Mongo/SQL backends)
- Create compound unique indexes on (`tenant_id`, `bundle_id`) for catalog; (`tenant_id`, `bundle_id`, `path`) for items.
- Enforce RLS by always scoping queries to `tenant_id` and validating it at repository boundary (as done in in-memory reference impl).
- Keep paths lowercased or use ordinal comparisons to avoid locale drift; sort before persistence to preserve determinism.

## Next steps
- Implement Mongo-backed repositories mirroring the deterministic behavior and indexes above.
- Wire repositories into importer service/CLI once storage provider is selected.

## Owners
- AirGap Importer Guild.