feat(telemetry): pack ZB.MOM.WW.Telemetry 0.1.0 + README/CLAUDE + register observability component in indexes

- NuGet metadata: expanded Description and PackageTags on both library csproj files
  (opentelemetry;observability;metrics;tracing;prometheus;otlp;... / serilog;logging;...)
- Full dotnet test: 7 (Telemetry) + 12 (Serilog) = 19 tests, all green
- dotnet pack: ZB.MOM.WW.Telemetry.0.1.0.nupkg + ZB.MOM.WW.Telemetry.Serilog.0.1.0.nupkg
  (artifacts/ gitignored, not committed)
- ZB.MOM.WW.Telemetry/README.md: overview, 2 packages, unifying hinge prose,
  exporter options, OTel signals + trace-log correlation, test/pack commands, status
- ZB.MOM.WW.Telemetry/CLAUDE.md: package responsibilities, consumer matrix,
  build/test/pack commands, status + pointers to components/observability/
- components/README.md: Observability row added to component registry table
- CLAUDE.md: Telemetry row added to component-normalization table; intro count
  updated to four shared libs; observability prose paragraph added (MxGateway
  logging adoption noted)
- upcoming.md: Observability item ticked done, pointing at components/observability/
  and ZB.MOM.WW.Telemetry; MxGateway MEL->Serilog adoption noted
- components/observability/README.md: status updated to Built @ 0.1.0, library
  build/pack commands added, MxGateway adoption row updated

CLAUDE.md

@@ -6,10 +6,11 @@ This file provides guidance to Claude Code (claude.ai/code) when working with co
 
 `scadaproj` is primarily an umbrella/index workspace that aggregates a family of
 related SCADA / OT / Wonderware / OPC UA "sister projects" that live as **sibling
-directories under `~/Desktop/`**. It now also **hosts three pieces of source itself** —
+directories under `~/Desktop/`**. It now also **hosts four pieces of source itself** —
 the shared [`ZB.MOM.WW.Auth/`](ZB.MOM.WW.Auth/) library, the shared
-[`ZB.MOM.WW.Theme/`](ZB.MOM.WW.Theme/) UI kit, and the shared
-[`ZB.MOM.WW.Health/`](ZB.MOM.WW.Health/) health-check library — all the realized output of their
+[`ZB.MOM.WW.Theme/`](ZB.MOM.WW.Theme/) UI kit, the shared
+[`ZB.MOM.WW.Health/`](ZB.MOM.WW.Health/) health-check library, and the shared
+[`ZB.MOM.WW.Telemetry/`](ZB.MOM.WW.Telemetry/) observability library — all the realized output of their
 respective component normalizations (see [Component normalization](#component-normalization)).
 The point of this file is to give a high-level scan of each sister project — its purpose,
 location, stack, and primary commands — so a fresh Claude Code session can orient across
@@ -121,6 +122,7 @@ each project's **code-verified current state**, and the **gaps** between. See
 | Auth (login / identity / authz) | Built (lib `0.1.0`) | Shared `ZB.MOM.WW.Auth` lib | [`components/auth/`](components/auth/) | [`ZB.MOM.WW.Auth/`](ZB.MOM.WW.Auth/) |
 | UI Theme (layout / tokens / components) | Built (lib `0.1.0`) | Shared `ZB.MOM.WW.Theme` RCL | [`components/ui-theme/`](components/ui-theme/) | [`ZB.MOM.WW.Theme/`](ZB.MOM.WW.Theme/) |
 | Health (readiness / liveness / active-node) | Built (lib `0.1.0`) | Shared `ZB.MOM.WW.Health` lib | [`components/health/`](components/health/) | [`ZB.MOM.WW.Health/`](ZB.MOM.WW.Health/) |
+| Observability (metrics / traces / logs) | Built (lib `0.1.0`) | Shared `ZB.MOM.WW.Telemetry` lib + `.Serilog` | [`components/observability/`](components/observability/) | [`ZB.MOM.WW.Telemetry/`](ZB.MOM.WW.Telemetry/) |
 
 The auth component is fully populated: a normalized [`spec`](components/auth/spec/SPEC.md), a
 proposed [`shared-contract`](components/auth/shared-contract/ZB.MOM.WW.Auth.md), three
@@ -166,6 +168,24 @@ The shared library is **built and lives in this repo** at [`ZB.MOM.WW.Health/`](
 Build/test from `ZB.MOM.WW.Health/`: `dotnet test`. Consumer matrix: MxAccessGateway → core only;
 OtOpcUa & ScadaBridge → all three packages.
 
+The observability component is fully populated: a normalized [`spec`](components/observability/spec/SPEC.md),
+a [`metric-conventions`](components/observability/spec/METRIC-CONVENTIONS.md) reference, a
+[`shared-contract`](components/observability/shared-contract/ZB.MOM.WW.Telemetry.md), three
+[`current-state`](components/observability/current-state/) docs, and an adoption [`GAPS`](components/observability/GAPS.md)
+backlog. Shared = OTel Resource (service.name/site.id/node.role identity triple) + standard instrumentation
+(ASP.NET Core, HttpClient, gRPC client, runtime, process) + Prometheus always-on exporter + OTLP opt-in
++ Serilog two-stage bootstrap + SiteId/NodeRole/NodeHostname enrichers + TraceContextEnricher (trace_id/span_id)
++ ILogRedactor seam; left per-project = application Meters/ActivitySources, sink config, per-operation
+enrichers, and redaction policies.
+
+The shared library is **built and lives in this repo** at [`ZB.MOM.WW.Telemetry/`](ZB.MOM.WW.Telemetry/)
+(.NET 10; 2 packages — `ZB.MOM.WW.Telemetry`, `ZB.MOM.WW.Telemetry.Serilog`; 19 tests;
+`dotnet pack` → 2 nupkgs @ 0.1.0). **MxAccessGateway logging adopted** (MEL → Serilog migration done on
+its own branch) — the one in-pass adoption. Broader OtOpcUa and ScadaBridge telemetry adoption is
+follow-on, tracked in [`components/observability/GAPS.md`](components/observability/GAPS.md).
+Build/test from `ZB.MOM.WW.Telemetry/`: `dotnet test`. Consumer matrix: all three apps consume both
+packages after adoption (OtOpcUa, MxGateway Server, ScadaBridge Host + any instrumented project).
+
 ## Per-project primary commands
 
 Run these from inside each project directory (not from `scadaproj`).