dbus: filter exit errors caused by signal

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

dbus/run.go

@@ -149,6 +149,15 @@ func (p *Proxy) Wait() error {
 		errs[0] = nil
 	}
 
+	var exitError *exec.ExitError
+	if errors.As(errs[0], &exitError) &&
+		exitError != nil &&
+		exitError.Exited() &&
+		exitError.ExitCode() == -1 {
+		// exit due to signal
+		errs[0] = nil
+	}
+
 	// ensure socket removal so ephemeral directory is empty at revert
 	if err := os.Remove(p.session[1]); err != nil && !errors.Is(err, os.ErrNotExist) {
 		errs[1] = err

internal/app/process.go

@@ -84,6 +84,7 @@ func (seal *outcome) Run(ctx context.Context, rs *fst.RunState) error {
 				ec.Set(system.Process)
 				if states, err := c.Load(); err != nil {
 					// revert per-process state here to limit damage
+					fmsg.Verbosef("cannot load state entries: %v", err)
 					return errors.Join(err, seal.sys.Revert(ec))
 				} else {
 					if l := len(states); l == 0 {