feat(telemetry): align metrics with OpenTelemetry conventions

.config/mise/tasks/semconv/check

@@ -10,3 +10,11 @@ trap 'rm -rf "$generated"' EXIT HUP INT TERM
 
 "$root/.config/mise/tasks/semconv/generate" "$generated"
 diff -ru "$expected" "$generated"
+
+if grep -n '"eventstore-' \
+	"$root/src/EventStore.Core/MetricsBootstrapper.cs" \
+	"$root/src/EventStore.Projections.Core/ProjectionsSubsystem.cs"
+then
+	echo "Built-in metric names must come from the generated MetricNames catalog." >&2
+	exit 1
+fi

.config/mise/tasks/semconv/generate

@@ -6,18 +6,32 @@ set -eu
 root=$(CDPATH='' cd -- "$(dirname -- "$0")/../../../.." && pwd)
 output=${1:-"$root/src/TrogonEventStore.SemanticConventions/Generated"}
 registry_version=$(sed -n '1p' "$root/otel/semconv/registry-version")
-registry="https://github.com/open-telemetry/semantic-conventions@${registry_version}[model]"
+registry="$root/otel/semconv/registry"
+official_registry="https://github.com/open-telemetry/semantic-conventions@${registry_version}[model]"
 staging=$(mktemp -d)
 trap 'rm -rf "$staging"' EXIT HUP INT TERM
 
+grep -Fqx "    registry_path: $official_registry" "$registry/manifest.yaml"
+
 weaver registry check \
 	--future \
 	--registry "$registry"
 
 weaver registry generate csharp "$staging" \
 	--future \
 	--registry "$registry" \
-	--templates "$root/otel/semconv/templates"
+	--templates "$root/otel/semconv/templates" \
+	-D attributes=false \
+	-D custom_attributes=true \
+	-D official_metrics=false
+
+weaver registry generate csharp "$staging" \
+	--future \
+	--registry "$official_registry" \
+	--templates "$root/otel/semconv/templates" \
+	-D custom_attributes=false \
+	-D metrics=false \
+	-D official_metrics=true
 
 set -- "$staging"/*.g.cs
 [ -e "$1" ] || exit 1

otel/semconv/registry/manifest.yaml

@@ -0,0 +1,6 @@
+name: trogon_eventstore
+description: Semantic conventions for TrogonEventStore telemetry.
+schema_url: https://trogondb.com/schemas/0.1.0
+dependencies:
+  - schema_url: https://opentelemetry.io/schemas/1.43.0
+    registry_path: https://github.com/open-telemetry/semantic-conventions@v1.43.0[model]