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

components/README.md

@@ -20,6 +20,7 @@ specs and analyses that *drive* changes made in the individual repos.
 | Auth (login / identity / authz) | Draft | OtOpcUa, MxAccessGateway, ScadaBridge | Path to shared code (`ZB.MOM.WW.Auth`) | [`auth/`](auth/) |
 | UI Theme (layout / tokens / components) | Draft | OtOpcUa, MxAccessGateway, ScadaBridge | Path to shared code (`ZB.MOM.WW.Theme`) | [`ui-theme/`](ui-theme/) |
 | Health (readiness / liveness / active-node) | Draft | OtOpcUa, MxAccessGateway, ScadaBridge | Shared `ZB.MOM.WW.Health` lib (3 packages) | [`health/`](health/) |
+| Observability (metrics / traces / logs) | Draft | OtOpcUa, MxAccessGateway, ScadaBridge | Shared `ZB.MOM.WW.Telemetry` lib (2 packages) | [`observability/`](observability/) |
 
 > Add a row when you start normalizing a new component. Status: `Draft` → `Reviewed` → `Adopting` → `Converged`.
 

components/observability/README.md

@@ -48,7 +48,7 @@ other app wiring is follow-on, consistent with how Auth and UI-Theme are structu
 | Project | OTel SDK today | Metrics today | Tracing today | Logging today | Enrichers today | Adoption status |
 |---|---|---|---|---|---|---|
 | **OtOpcUa** | ✅ full SDK (`WithMetrics`+`WithTracing`) | ✅ 7 instruments (`otopcua.*`); Prometheus `/metrics` | 🟡 2 spans defined; no exporter | Serilog (Console+File) | `DriverInstanceId`/`DriverType`/`CapabilityName`/`CorrelationId` (driver-scope) | Not started (follow-on) |
-| **MxAccessGateway** | ⛔ none (hand-rolled `Meter`) | 🟡 20 instruments (`mxgateway.*`); **never exported** | ⛔ none | MEL → **migrating to Serilog in this task** | `SessionId`/`WorkerProcessId`/`CorrelationId`/`CommandMethod` (MEL scope) | **In progress (Task #9)** |
+| **MxAccessGateway** | ⛔ none (hand-rolled `Meter`) | 🟡 20 instruments (`mxgateway.*`); **never exported** | ⛔ none | **Serilog (migrated from MEL — adopted)** | `SiteId`/`NodeRole`/`NodeHostname` (via `AddZbSerilog`); session/worker enrichers via `LogContext.PushProperty` | **Logging adopted; OTel metrics/traces follow-on** |
 | **ScadaBridge** | ⛔ (`OpenTelemetry.Api` CVE-patch only) | ⛔ zero instruments | ⛔ none | Serilog (Console+File) | `SiteId`/`NodeRole`/`NodeHostname` (process-level; strongest set) | Not started (follow-on) |
 
 See each project's [`current-state/<project>/CURRENT-STATE.md`](current-state/) for the
@@ -100,7 +100,15 @@ hinge that makes a metric, a span, and a log line from the same node carry ident
 
 ## Component status
 
-**Status: Draft.** Spec and shared-contract written; current-state docs verified; GAPS backlog
-populated. Library implementation in progress (`ZB.MOM.WW.Telemetry` — Task #8). MxAccessGateway
-MEL → Serilog migration in progress (Task #9, blocked by library build). Adoption by OtOpcUa and
-ScadaBridge is follow-on, tracked in [`GAPS.md`](GAPS.md).
+**Status: Built @ 0.1.0. MxAccessGateway MEL → Serilog logging adopted (on its own branch).
+OtOpcUa and ScadaBridge telemetry adoption is follow-on, tracked in [`GAPS.md`](GAPS.md).**
+
+The shared library lives at
+[`~/Desktop/scadaproj/ZB.MOM.WW.Telemetry/`](../../ZB.MOM.WW.Telemetry/) (.NET 10; 2 packages —
+`ZB.MOM.WW.Telemetry` and `ZB.MOM.WW.Telemetry.Serilog`; 19 tests; `dotnet pack` → 2 nupkgs @ 0.1.0).
+Build/test/pack from `ZB.MOM.WW.Telemetry/`:
+
+```bash
+dotnet test ZB.MOM.WW.Telemetry.slnx
+dotnet pack ZB.MOM.WW.Telemetry.slnx -c Release -o ./artifacts
+```