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/server.go

@@ -583,6 +583,13 @@ var methodTable = map[Method]handlerFunc{
 	MethodTickTrace: withoutParams(func(ctx context.Context, api CoreAPI) (TickTrace, error) {
 		return api.TickTrace(ctx)
 	}),
+	MethodTurnDecisions: withParams(func(ctx context.Context, api CoreAPI, p nReq) ([]TurnDecision, error) {
+		d, err := api.TurnDecisions(ctx, p.N)
+		if d == nil {
+			d = []TurnDecision{}
+		}
+		return d, err
+	}),
 	// MorningStatus intentionally has no nil→[]T{} normalization here — the
 	// pre-table arm marshaled api.MorningStatus's result as-is (a nil slice
 	// serializes as JSON null), and this preserves that exact wire shape.