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docs: split per-library history out of the root index into ZB.MOM.WW.*/CLAUDE.md files

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Claude-Session: https://claude.ai/code/session_01Wzg6NUCWHipSexLs2cgRFv
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Joseph Doherty
2026-09-03 10:48:29 -04:00
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ZB.MOM.WW.GalaxyRepository/CLAUDE.md
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# ZB.MOM.WW.GalaxyRepository
Shared Galaxy object-hierarchy SQL browse + `galaxy_repository.v1` gRPC service for the **ZB.MOM.WW SCADA family** (consumed by HistorianGateway and mxaccessgw). Build/test from this directory: `dotnet test`.
## Index history (migrated from the scadaproj root CLAUDE.md)
> Moved verbatim out of the scadaproj root `CLAUDE.md` on 2026-09-03 so it loads only when needed. **This file is now the authoritative place for this history — append new entries here and keep the root index row short.**
### Narrative
The Galaxy Repository component normalizes the **Galaxy object-hierarchy SQL browse + reusable gRPC service**
that was previously embedded in `mxaccessgw`. Shared = canonical `galaxy_repository.v1` proto (wire-compatible
with `mxaccessgw`'s existing contract so OtOpcUa's `GalaxyRepositoryClient` is unaffected), the SQL browse
provider (`HierarchySql` / `AttributesSql` validated reverse-engineered queries), in-memory hierarchy cache +
snapshot + deploy-poll refresh `BackgroundService`, `GalaxyHierarchyProjector`, and `AddZbGalaxyRepository` /
`MapZbGalaxyRepository` DI extension. Left per-consumer = section path, subtree auth filtering, and any
app-specific paging defaults.
The shared library is **built and lives in this repo** at [`ZB.MOM.WW.GalaxyRepository/`](ZB.MOM.WW.GalaxyRepository/)
(.NET 10; single package `ZB.MOM.WW.GalaxyRepository`; `dotnet pack` → 1 nupkg @ 0.1.0, **published to
the Gitea NuGet feed** `gitea.dohertylan.com/api/packages/dohertj2/nuget`). The design doc is at
[`docs/plans/2026-06-23-historian-gateway-design.md`](docs/plans/2026-06-23-historian-gateway-design.md) (§10, component 1).
**Consumed by HistorianGateway** as a `PackageReference` from that Gitea feed, pinned at `0.2.0` (originally a
cross-repo `ProjectReference` to this scadaproj tree; switched to the feed package 2026-06-24; bumped `0.1.0` → `0.2.0` 2026-06-25).
**mxaccessgw adoption is a tracked follow-on** — once adopted, mxaccessgw's inline Galaxy browse code is replaced
by the shared lib (the `galaxy_repository.v1` wire contract is already identical, so OtOpcUa and ScadaBridge
clients are unaffected). Build/test from `ZB.MOM.WW.GalaxyRepository/`: `dotnet test`.
Consumer matrix: HistorianGateway (initial); mxaccessgw (follow-on adoption).