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/chat/ChatWindow.svelte

@@ -28,7 +28,7 @@
       return null;
     }
     
-    const encontrada = conversas.data.find((c: any) => c._id === conversaId);
+    const encontrada = conversas.data.find((c: { _id: string }) => c._id === conversaId);
     console.log("✅ [ChatWindow] Conversa encontrada:", encontrada);
     return encontrada;
   });
@@ -54,10 +54,10 @@
     return "👤";
   }
 
-  function getStatusConversa(): any {
+  function getStatusConversa(): "online" | "offline" | "ausente" | "externo" | "em_reuniao" | null {
     const c = conversa();
     if (c && c.tipo === "individual" && c.outroUsuario) {
-      return c.outroUsuario.statusPresenca || "offline";
+      return (c.outroUsuario.statusPresenca as "online" | "offline" | "ausente" | "externo" | "em_reuniao") || "offline";
     }
     return null;
   }
@@ -169,20 +169,20 @@
   </div>
 
   <!-- Mensagens -->
-  <div class="flex-1 overflow-hidden">
-    <MessageList conversaId={conversaId as any} />
+  <div class="flex-1 overflow-hidden min-h-0">
+    <MessageList conversaId={conversaId as Id<"conversas">} />
   </div>
 
   <!-- Input -->
-  <div class="border-t border-base-300">
-    <MessageInput conversaId={conversaId as any} />
+  <div class="border-t border-base-300 flex-shrink-0">
+    <MessageInput conversaId={conversaId as Id<"conversas">} />
   </div>
 </div>
 
 <!-- Modal de Agendamento -->
 {#if showScheduleModal}
   <ScheduleMessageModal
-    conversaId={conversaId as any}
+    conversaId={conversaId as Id<"conversas">}
     onClose={() => (showScheduleModal = false)}
   />
 {/if}