feat(otel): remove custom service name in favor of env variable

internal/otel.go

@@ -16,7 +16,6 @@ import (
 	"go.opentelemetry.io/otel/sdk/metric"
 	"go.opentelemetry.io/otel/sdk/resource"
 	"go.opentelemetry.io/otel/sdk/trace"
-	semconv "go.opentelemetry.io/otel/semconv/v1.26.0"
 )
 
 // setupOTelSDK bootstraps the OpenTelemetry pipeline.
@@ -46,10 +45,7 @@ func setupOTelSDK(ctx context.Context) (func(context.Context) error, error) {
 	prop := newPropagator()
 	otel.SetTextMapPropagator(prop)
 
-	resources, err := resource.New(
-		ctx,
-		resource.WithAttributes(semconv.ServiceName("spend-sparrow")),
-	)
+	resources, err := resource.New(ctx)
 	if err != nil {
 		slog.ErrorContext(ctx, "failed to create resource", "error", err)
 	}

main.go

@@ -22,8 +22,11 @@ func main() {
 		return
 	}
 
-	db, err := otelsqlx.Open("sqlite3", "./data/spend-sparrow.db?_journal_mode=WAL",
-		otelsql.WithAttributes(semconv.DBSystemSqlite))
+	db, err := otelsqlx.Open(
+		"sqlite3",
+		"./data/spend-sparrow.db?_journal_mode=WAL",
+		otelsql.WithAttributes(semconv.DBSystemSqlite),
+	)
 	if err != nil {
 		slog.ErrorContext(ctx, "Could not open Database data.db", "err", err)
 		return