feat(portal): adiciona skeletons para melhor UX durante carregamento

- Adiciona skeleton no header quando dados do usuario estao carregando
- Remove mensagem "Sem e-mail definido" durante loading
- Substitui spinner por skeleton cards na lista de tickets
- Cria componente PortalTicketCardSkeleton para estado de loading

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

src/components/portal/portal-shell.tsx

@@ -9,6 +9,7 @@ import { toast } from "sonner"
 
 import { Button } from "@/components/ui/button"
 import { Avatar, AvatarFallback, AvatarImage } from "@/components/ui/avatar"
+import { Skeleton } from "@/components/ui/skeleton"
 import { cn } from "@/lib/utils"
 import { useAuth, signOut } from "@/lib/auth-client"
 
@@ -115,6 +116,15 @@ export function PortalShell({ children }: PortalShellProps) {
             })}
           </nav>
           <div className="flex w-full flex-col items-start gap-3 sm:w-auto sm:flex-row sm:items-center">
+            {machineContextLoading ? (
+              <div className="flex items-center gap-2 text-sm">
+                <Skeleton className="size-9 rounded-full" />
+                <div className="flex flex-col gap-1.5">
+                  <Skeleton className="h-4 w-24" />
+                  <Skeleton className="h-3 w-32" />
+                </div>
+              </div>
+            ) : (
               <div className="flex items-center gap-2 text-sm">
                 <Avatar className="size-9 border border-slate-200">
                   <AvatarImage src={session?.user.avatarUrl ?? undefined} alt={displayName ?? ""} />
@@ -128,6 +138,7 @@ export function PortalShell({ children }: PortalShellProps) {
                   ) : null}
                 </div>
               </div>
+            )}
             {!isMachineSession ? (
               <Button
                 size="sm"
@@ -152,11 +163,6 @@ export function PortalShell({ children }: PortalShellProps) {
             </p>
           </div>
         ) : null}
-        {!machineContextError && machineContextLoading ? (
-          <div className="rounded-xl border border-slate-200 bg-slate-50 px-4 py-3 text-sm text-neutral-600 shadow-sm">
-            Recuperando dados do colaborador vinculado...
-          </div>
-        ) : null}
         {children}
       </main>
       <footer className="border-t border-slate-200 bg-white/70">

src/components/portal/portal-ticket-list.tsx

@@ -11,6 +11,7 @@ import { useAuth } from "@/lib/auth-client"
 import Link from "next/link"
 import { Card, CardContent, CardHeader, CardTitle } from "@/components/ui/card"
 import { Empty, EmptyDescription, EmptyHeader, EmptyMedia, EmptyTitle } from "@/components/ui/empty"
+import { Skeleton } from "@/components/ui/skeleton"
 import { Spinner } from "@/components/ui/spinner"
 import { Button } from "@/components/ui/button"
 import { PortalTicketCard } from "@/components/portal/portal-ticket-card"
@@ -195,19 +196,26 @@ export function PortalTicketList() {
 
   if (isLoading) {
     return (
-      <Card className="rounded-2xl border border-slate-200 bg-white shadow-sm">
+      <div className="space-y-4">
-        <CardContent className="flex h-56 flex-col items-center justify-center gap-3 px-5 text-center">
+        <div className="flex items-center justify-between">
-          <div className="inline-flex size-12 items-center justify-center rounded-full border border-slate-200 bg-slate-50">
+          <div>
-            <Spinner className="size-5 text-neutral-600" />
+            <h2 className="text-lg font-semibold text-neutral-900">Meus chamados</h2>
+            <p className="text-sm text-neutral-600">Acompanhe seus tickets e veja as últimas atualizações.</p>
           </div>
-          <div className="space-y-1">
-            <CardTitle className="text-lg font-semibold text-neutral-900">Carregando chamados...</CardTitle>
-            <p className="text-sm text-neutral-600">
-              Estamos buscando seus chamados mais recentes. Isso deve levar apenas alguns instantes.
-            </p>
         </div>
-        </CardContent>
+        <Card className="rounded-2xl border border-slate-200 bg-white p-5 shadow-sm">
+          <div className="grid grid-cols-3 gap-4">
+            <Skeleton className="h-10 rounded-lg" />
+            <Skeleton className="h-10 rounded-lg" />
+            <Skeleton className="h-10 rounded-lg" />
+          </div>
         </Card>
+        <div className="grid gap-4">
+          {Array.from({ length: 4 }).map((_, index) => (
+            <PortalTicketCardSkeleton key={index} />
+          ))}
+        </div>
+      </div>
     )
   }
 
@@ -393,6 +401,45 @@ export function PortalTicketList() {
   )
 }
 
+/** Skeleton do card de ticket para estado de carregamento */
+function PortalTicketCardSkeleton() {
+  return (
+    <Card className="overflow-hidden rounded-2xl border border-slate-200 bg-white shadow-sm">
+      <CardHeader className="flex flex-row items-start justify-between gap-3 px-5 pb-3 pt-5">
+        <div className="flex-1">
+          <div className="flex items-center gap-2">
+            <Skeleton className="h-4 w-16" />
+            <Skeleton className="h-4 w-24" />
+          </div>
+          <Skeleton className="mt-2 h-6 w-3/4" />
+        </div>
+        <div className="flex flex-col items-end gap-2">
+          <Skeleton className="h-9 w-24 rounded-full" />
+          <Skeleton className="h-6 w-16 rounded-full" />
+        </div>
+      </CardHeader>
+      <CardContent className="flex flex-wrap items-center justify-between gap-4 border-t border-slate-100 px-5 py-4">
+        <div className="flex flex-col gap-1">
+          <Skeleton className="h-3 w-8" />
+          <Skeleton className="h-4 w-20" />
+        </div>
+        <div className="flex flex-col gap-1">
+          <Skeleton className="h-3 w-12" />
+          <Skeleton className="h-4 w-24" />
+        </div>
+        <div className="flex flex-col gap-1">
+          <Skeleton className="h-3 w-20" />
+          <Skeleton className="h-4 w-28" />
+        </div>
+        <div className="flex flex-col gap-1">
+          <Skeleton className="h-3 w-16" />
+          <Skeleton className="h-4 w-32" />
+        </div>
+      </CardContent>
+    </Card>
+  )
+}
+
 /**
  * Gera array de números de página para exibição.
  * Mostra primeira, última e páginas próximas à atual com reticências.