daemon: treat SIGTERM cancel as clean exit

cmd/hecate/main.go

@@ -2,6 +2,7 @@ package main
 
 import (
 	"context"
+	"errors"
 	"flag"
 	"fmt"
 	"log"
@@ -147,7 +148,10 @@ func runDaemon(logger *log.Logger, args []string) error {
 	d := service.NewDaemon(cfg, orch, targets, logger)
 	ctx, stop := signal.NotifyContext(context.Background(), os.Interrupt, syscall.SIGTERM)
 	defer stop()
-	return d.Run(ctx)
+	if err := d.Run(ctx); err != nil && !errors.Is(err, context.Canceled) {
+		return err
+	}
+	return nil
 }
 
 func runStatus(logger *log.Logger, args []string) error {