feat: manage task process lifetimes and preserve turn history

internal/processguard/platform_other.go

@@ -0,0 +1,31 @@
+//go:build !linux && !windows
+
+package processguard
+
+import (
+	"encoding/json"
+	"fmt"
+)
+
+func configurePlatform(o *Options) error {
+	if o.Mode == "required" || o.CgroupRoot != "" {
+		return fmt.Errorf("kernel task containment is unavailable on this OS; use a Linux cgroup deployment")
+	}
+	return nil
+}
+func newPlatformGroup(id string, o Options) (Group, error) {
+	if err := configurePlatform(&o); err != nil {
+		return nil, err
+	}
+	return newUnixGroup()
+}
+func guardianMain(dec *json.Decoder, enc *json.Encoder) error {
+	var req watchRequest
+	if err := dec.Decode(&req); err != nil {
+		return err
+	}
+	if req.Name != "process_group" {
+		return fmt.Errorf("unsupported guardian")
+	}
+	return groupGuardian(dec, enc)
+}