fix(web): cycle idle thoughts as a shuffled bag

apps/web/src/main.ts

@@ -25,6 +25,14 @@ const IDLE_THOUGHTS = [
   "so many stars",
   "are you happy",
   "hello",
+  "what is that moon",
+  "scan the area",
+  "run diagnostics",
+  "beautiful view",
+  "do you see that ship",
+  "what sector is this",
+  "tell me a joke",
+  "do you get bored",
 ];
 
 const PRESETS = [
@@ -194,14 +202,32 @@ function scheduleIdle(): void {
   }, delay);
 }
 
+// idle thoughts cycle as a shuffled bag so the muttering never repeats
+// back-to-back (the mind is deterministic per prompt)
+let thoughtBag: string[] = [];
+function nextThought(): string {
+  if (thoughtBag.length === 0) {
+    thoughtBag = [...IDLE_THOUGHTS];
+    for (let i = thoughtBag.length - 1; i > 0; i--) {
+      const j = Math.floor(Math.random() * (i + 1));
+      const a = thoughtBag[i];
+      const b = thoughtBag[j];
+      if (a !== undefined && b !== undefined) {
+        thoughtBag[i] = b;
+        thoughtBag[j] = a;
+      }
+    }
+  }
+  return thoughtBag.pop() ?? "hello";
+}
+
 async function idleUtterance(): Promise<void> {
   if (busy || !mind) {
     scheduleIdle();
     return;
   }
   busy = true;
-  const thought = IDLE_THOUGHTS[Math.floor(Math.random() * IDLE_THOUGHTS.length)] ?? "hello";
-  const { emotion: e, reply } = mind.reply(thought);
+  const { emotion: e, reply } = mind.reply(nextThought());
   await speak(e, reply);
   busy = false;
   scheduleIdle();