src/components/asignaturas/detalle/IAAsignaturaTab.tsx

@@ -76,6 +76,17 @@ export function IAAsignaturaTab({
   const [isCreatingNewChat, setIsCreatingNewChat] = useState(false)
   const hasInitialSelected = useRef(false)
 
+  const isAiThinking = useMemo(() => {
+    if (isSending) return true
+    if (!rawMessages || rawMessages.length === 0) return false
+
+    // Verificamos si el último mensaje está en estado de procesamiento
+    const lastMessage = rawMessages[rawMessages.length - 1]
+    return (
+      lastMessage.estado === 'PROCESANDO' || lastMessage.estado === 'PENDIENTE'
+    )
+  }, [isSending, rawMessages])
+
   // --- AUTO-SCROLL ---
   useEffect(() => {
     const viewport = scrollRef.current?.querySelector(
@@ -392,11 +403,23 @@ export function IAAsignaturaTab({
                   </div>
                 </div>
               ))}
-              {isSending && (
-                <div className="flex animate-pulse gap-2 p-4">
-                  <div className="h-2 w-2 rounded-full bg-teal-400" />
-                  <div className="h-2 w-2 rounded-full bg-teal-400" />
-                  <div className="h-2 w-2 rounded-full bg-teal-400" />
+              {isAiThinking && (
+                <div className="animate-in fade-in flex flex-row items-start gap-3 duration-300">
+                  <Avatar className="h-8 w-8 shrink-0 border bg-teal-50">
+                    <AvatarFallback>
+                      <Sparkles
+                        size={14}
+                        className="animate-pulse text-teal-600"
+                      />
+                    </AvatarFallback>
+                  </Avatar>
+                  <div className="rounded-2xl rounded-tl-none border bg-white p-4 shadow-sm">
+                    <div className="flex gap-1.5">
+                      <div className="h-2 w-2 animate-bounce rounded-full bg-teal-400 [animation-delay:-0.3s]" />
+                      <div className="h-2 w-2 animate-bounce rounded-full bg-teal-400 [animation-delay:-0.15s]" />
+                      <div className="h-2 w-2 animate-bounce rounded-full bg-teal-400" />
+                    </div>
+                  </div>
                 </div>
               )}
             </div>

src/data/api/ai.api.ts

@@ -301,7 +301,7 @@ export async function getConversationBySubject(subjectId: string) {
 export async function getMessagesBySubjectConversation(conversationId: string) {
   const supabase = supabaseBrowser()
   const { data, error } = await supabase
-    .from('asignatura_mensajes_ia') // Tabla corregida
+    .from('asignatura_mensajes_ia' as any)
     .select('*')
     .eq('conversacion_asignatura_id', conversationId)
     .order('fecha_creacion', { ascending: true })

src/data/hooks/useAI.ts

@@ -243,15 +243,54 @@ export function useConversationBySubject(subjectId: string | null) {
 }
 
 export function useMessagesBySubjectChat(conversationId: string | null) {
-  return useQuery({
+  const queryClient = useQueryClient()
+
+  const query = useQuery({
     queryKey: ['subject-messages', conversationId],
-    queryFn: () => {
+    queryFn: async () => {
       if (!conversationId) throw new Error('Conversation ID is required')
       return getMessagesBySubjectConversation(conversationId)
     },
     enabled: !!conversationId,
     placeholderData: (previousData) => previousData,
   })
+
+  useEffect(() => {
+    if (!conversationId) return
+
+    const supabase = supabaseBrowser()
+
+    // Suscripción a cambios en la tabla específica para esta conversación
+    const channel = supabase
+      .channel(`subject_messages_${conversationId}`)
+      .on(
+        'postgres_changes',
+        {
+          event: 'UPDATE', // Solo nos interesan las actualizaciones (cuando pasa de PROCESANDO a COMPLETADO)
+          schema: 'public',
+          table: 'asignatura_mensajes_ia',
+          filter: `conversacion_asignatura_id=eq.${conversationId}`,
+        },
+        (payload) => {
+          // Si el mensaje se completó o dio error, invalidamos la caché para traer los datos nuevos
+          if (
+            payload.new.estado === 'COMPLETADO' ||
+            payload.new.estado === 'ERROR'
+          ) {
+            queryClient.invalidateQueries({
+              queryKey: ['subject-messages', conversationId],
+            })
+          }
+        },
+      )
+      .subscribe()
+
+    return () => {
+      supabase.removeChannel(channel)
+    }
+  }, [conversationId, queryClient])
+
+  return query
 }
 
 export function useUpdateSubjectRecommendation() {