refactor: enhance chat components with type safety and response functionality

- Updated type definitions in ChatWindow and MessageList components for better type safety.
- Improved MessageInput to handle message responses, including a preview feature for replying to messages.
- Enhanced the chat message handling logic to support message references and improve user interaction.
- Refactored notification utility functions to support push notifications and rate limiting for email sending.
- Updated backend schema to accommodate new features related to message responses and notifications.

apps/web/src/lib/components/PushNotificationManager.svelte

@@ -0,0 +1,75 @@
+<script lang="ts">
+  import { onMount } from "svelte";
+  import { useConvexClient } from "convex-svelte";
+  import { api } from "@sgse-app/backend/convex/_generated/api";
+  import { authStore } from "$lib/stores/auth.svelte";
+  import {
+    registrarServiceWorker,
+    solicitarPushSubscription,
+    subscriptionToJSON,
+    removerPushSubscription,
+  } from "$lib/utils/notifications";
+
+  const client = useConvexClient();
+
+  onMount(async () => {
+    // Aguardar usuário estar autenticado
+    const checkAuth = setInterval(async () => {
+      if (authStore.usuario) {
+        clearInterval(checkAuth);
+        await registrarPushSubscription();
+      }
+    }, 500);
+
+    // Limpar intervalo após 30 segundos (timeout)
+    setTimeout(() => {
+      clearInterval(checkAuth);
+    }, 30000);
+
+    return () => {
+      clearInterval(checkAuth);
+    };
+  });
+
+  async function registrarPushSubscription() {
+    try {
+      // Solicitar subscription
+      const subscription = await solicitarPushSubscription();
+
+      if (!subscription) {
+        console.log("ℹ️ Push subscription não disponível ou permissão negada");
+        return;
+      }
+
+      // Converter para formato serializável
+      const subscriptionData = subscriptionToJSON(subscription);
+
+      // Registrar no backend
+      const resultado = await client.mutation(api.pushNotifications.registrarPushSubscription, {
+        endpoint: subscriptionData.endpoint,
+        keys: subscriptionData.keys,
+        userAgent: navigator.userAgent,
+      });
+
+      if (resultado.sucesso) {
+        console.log("✅ Push subscription registrada com sucesso");
+      } else {
+        console.error("❌ Erro ao registrar push subscription:", resultado.erro);
+      }
+    } catch (error) {
+      console.error("❌ Erro ao configurar push notifications:", error);
+    }
+  }
+
+  // Remover subscription ao fazer logout
+  $effect(() => {
+    if (!authStore.usuario) {
+      removerPushSubscription().then(() => {
+        console.log("Push subscription removida");
+      });
+    }
+  });
+</script>
+
+<!-- Componente invisível - apenas lógica -->
+