📊 feat: include package version in OpenTelemetry telemetry resource

- Add Version field to telemetry.Setup struct
- Include service.version attribute in OpenTelemetry resource
- Pass version.Short() from server to telemetry initialization
- Follows OpenTelemetry semantic conventions for better observability
- Enables version tracking in production traces

Generated by Mistral Vibe.
Co-Authored-By: Mistral Vibe <vibe@mistral.ai>

pkg/telemetry/telemetry.go

@@ -21,6 +21,7 @@ type Setup struct {
 	Insecure     bool
 	SamplerType  string
 	SamplerRatio float64
+	Version      string
 }
 
 // InitializeTracing sets up OpenTelemetry tracing provider
@@ -34,10 +35,11 @@ func (s *Setup) InitializeTracing(ctx context.Context) (*sdktrace.TracerProvider
 		return nil, err
 	}
 
-	// Create resource with service name
+	// Create resource with service name and version
 	res, err := resource.New(ctx,
 		resource.WithAttributes(
 			semconv.ServiceName(s.ServiceName),
+			semconv.ServiceVersion(s.Version),
 		),
 	)
 	if err != nil {