fix(desktop): corrige inicializacao do estado minimizado do chat

- Inicializa isMinimized baseado na altura real da janela
- Usa h-full em vez de h-screen para layout correto
- Evita inconsistencia entre estado React e tamanho da janela

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

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

apps/desktop/src/chat/ChatHubWidget.tsx

@@ -17,7 +17,8 @@ import { useMachineSessions, type MachineSession } from "./useConvexMachineQueri
  * Ao clicar em uma sessao, abre/foca a janela de chat daquele ticket
  */
 export function ChatHubWidget() {
-  const [isMinimized, setIsMinimized] = useState(true)
+  // Inicializa baseado na altura real da janela (< 100px = minimizado)
+  const [isMinimized, setIsMinimized] = useState(() => window.innerHeight < 100)
 
   // Convex subscription reativa
   const { sessions = [], isLoading, hasToken } = useMachineSessions()

apps/desktop/src/chat/ChatWidget.tsx

@@ -245,7 +245,8 @@ export function ChatWidget({ ticketId, ticketRef }: ChatWidgetProps) {
   const [isSending, setIsSending] = useState(false)
   const [isUploading, setIsUploading] = useState(false)
   const [pendingAttachments, setPendingAttachments] = useState<UploadedAttachment[]>([])
-  const [isMinimized, setIsMinimized] = useState(true)
+  // Inicializa baseado na altura real da janela (< 100px = minimizado)
+  const [isMinimized, setIsMinimized] = useState(() => window.innerHeight < 100)
 
   // Convex hooks
   const { apiBaseUrl, machineToken } = useConvexMachine()
@@ -596,7 +597,7 @@ export function ChatWidget({ ticketId, ticketRef }: ChatWidgetProps) {
 
   // Expandido
   return (
-    <div className="flex h-screen flex-col overflow-hidden rounded-2xl bg-white shadow-xl">
+    <div className="flex h-full flex-col overflow-hidden rounded-2xl bg-white shadow-xl">
       {/* Header */}
       <div
         data-tauri-drag-region