feat: use Axiom edge endpoint us-east-1.aws.edge.axiom.co

Use regional edge endpoint for improved data locality on both
OTLP exporters (traces/metrics) and the zerolog log adapter.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Author: AchoArnold

api/pkg/di/container.go

@@ -51,6 +51,7 @@ import (
 	semconv "go.opentelemetry.io/otel/semconv/v1.10.0"
 
 	axiomzerolog "github.com/axiomhq/axiom-go/adapters/zerolog"
+	"github.com/axiomhq/axiom-go/axiom"
 	"github.com/hirosassa/zerodriver"
 	"github.com/rs/zerolog"
 	"go.opentelemetry.io/otel/sdk/trace"
@@ -1853,7 +1854,7 @@ func (container *Container) initializeAxiomTraceProvider(version string, namespa
 	}
 
 	traceExporter, err := otlptracehttp.New(context.Background(),
-		otlptracehttp.WithEndpoint("api.axiom.co"),
+		otlptracehttp.WithEndpoint("us-east-1.aws.edge.axiom.co"),
 		otlptracehttp.WithHeaders(headers),
 	)
 	if err != nil {
@@ -1873,7 +1874,7 @@ func (container *Container) initializeAxiomTraceProvider(version string, namespa
 	))
 
 	metricExporter, err := otlpmetrichttp.New(context.Background(),
-		otlpmetrichttp.WithEndpoint("api.axiom.co"),
+		otlpmetrichttp.WithEndpoint("us-east-1.aws.edge.axiom.co"),
 		otlpmetrichttp.WithHeaders(headers),
 	)
 	if err != nil {
@@ -1970,6 +1971,7 @@ func axiomLogger(skipFrameCount int) *zerodriver.Logger {
 
 	axiomWriter, err := axiomzerolog.New(
 		axiomzerolog.SetDataset(os.Getenv("AXIOM_DATASET")),
+		axiomzerolog.SetClientOptions(axiom.SetEdge("us-east-1.aws.edge.axiom.co")),
 	)
 	if err != nil {
 		// Fall back to stderr JSON if Axiom is not configured