cmd/app: expose scheduling configuration

Useful for the music player.

Signed-off-by: Ophestra <cat@gensokyo.uk>

cmd/app/app.go

@@ -8,6 +8,7 @@ import (
 	"strings"
 
 	"hakurei.app/check"
+	"hakurei.app/ext"
 	"hakurei.app/fhs"
 	"hakurei.app/hst"
 )
@@ -192,6 +193,20 @@ func parse(
 			c.Groups = append(c.Groups, value)
 			continue
 
+		case "sched_policy":
+			if err := c.SchedPolicy.UnmarshalText([]byte(value)); err != nil {
+				return nil, err
+			}
+			continue
+
+		case "sched_priority":
+			v, err := strconv.Atoi(value)
+			if err != nil {
+				return nil, err
+			}
+			c.SchedPriority = ext.Int(v)
+			continue
+
 		case "env":
 			if key, value, ok = strings.Cut(value, "="); !ok {
 				return nil, fmt.Errorf("invalid environment %q", key)