Inbox answer validation isn't atomic with resolving the question

internal/agents/respond.go

@@ -2,6 +2,7 @@ package agents
 
 import (
 	"context"
+	"errors"
 	"fmt"
 	"log/slog"
 	"slices"
@@ -61,6 +62,9 @@ func (m *Manager) Respond(ctx context.Context, user string, creates []api.InboxR
 	}
 
 	err := m.store.Respond(ctx, user, resolutions)
+	if errors.Is(err, store.ErrNotOpen) {
+		return nil, fmt.Errorf("%w: %w", ErrConflict, err)
+	}
 	if err != nil {
 		slog.Error("record inbox responses", "user", user, "err", err)
 		return nil, err