feat: Puente Mayúscula-Minúscula + TTS SpeechSynthesis + E2E fixes

app/page.tsx

@@ -0,0 +1,19 @@
+"use client"
+
+import { useEffect } from "react"
+import { useRouter } from "next/navigation"
+
+export default function RootPage() {
+  const router = useRouter()
+
+  useEffect(() => {
+    const host = window.location.hostname
+    if (host.includes("simulacro")) {
+      router.replace("/parent")
+    } else {
+      router.replace("/child")
+    }
+  }, [router])
+
+  return null
+}