[perf] fix connect-leak in delay effect

packages/superdough/superdough.mjs

@@ -692,7 +692,8 @@ export const superdough = async (value, t, hapDuration, cps = 0.5, cycle = 0.5)
   // delay
   if (delay > 0 && delaytime > 0 && delayfeedback > 0) {
     orbitBus.getDelay(delaytime, delayfeedback, t);
-    orbitBus.sendDelay(post, delay);
+    const send = orbitBus.sendDelay(post, delay);
+    audioNodes.push(send)
   }
   // reverb
   if (room > 0) {

packages/superdough/superdoughoutput.mjs

@@ -82,7 +82,7 @@ export class Orbit {
   }
 
   sendDelay(node, amount) {
-    effectSend(node, this.delayNode, amount);
+    return effectSend(node, this.delayNode, amount);
   }
 
   duck(t, onsettime = 0, attacktime = 0.1, depth = 1) {