the ring reads out over ipc as turn decisions (V-564)

Same shape as TickTrace and RecentEvents: a bounded daemon ring, so the store
adapter refuses rather than pretending a table exists. No voice wiring means an
empty list and not an error, because a box with no voice path has had no turns
to arbitrate.

internal/ipc/client.go

@@ -672,6 +672,14 @@ func (c *Client) TickTrace(ctx context.Context) (TickTrace, error) {
 	return t, nil
 }
 
+func (c *Client) TurnDecisions(ctx context.Context, n int) ([]TurnDecision, error) {
+	var d []TurnDecision
+	if err := c.call(ctx, MethodTurnDecisions, nReq{N: n}, &d); err != nil {
+		return nil, err
+	}
+	return d, nil
+}
+
 func (c *Client) RecentEvents(ctx context.Context, n int) ([]IntakeEvent, error) {
 	var e []IntakeEvent
 	if err := c.call(ctx, MethodRecentEvents, nReq{N: n}, &e); err != nil {