fix: redimensiona janela de chat ao minimizar/expandir

- Adiciona funcao set_chat_minimized que redimensiona a janela
- Modo minimizado: 200x56 (tamanho do chip)
- Modo expandido: 380x520 (tamanho completo)
- Janela reposiciona automaticamente no canto inferior direito
- Adiciona comando is_chat_using_sse para verificar modo de conexao

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

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

apps/desktop/src/chat/ChatWidget.tsx

@@ -68,9 +68,13 @@ export function ChatWidget({ ticketId }: ChatWidgetProps) {
   useEffect(() => {
     if (hadSessionRef.current && !hasSession) {
       setIsMinimized(true)
+      // Redimensionar janela para modo minimizado
+      invoke("set_chat_minimized", { ticketId, minimized: true }).catch(err => {
+        console.error("Erro ao minimizar janela automaticamente:", err)
+      })
     }
     hadSessionRef.current = hasSession
-  }, [hasSession])
+  }, [hasSession, ticketId])
 
   // Carregar configuracao do store
   const loadConfig = useCallback(async () => {
@@ -306,8 +310,22 @@ export function ChatWidget({ ticketId }: ChatWidgetProps) {
     }
   }
 
-  const handleMinimize = () => {
+  const handleMinimize = async () => {
     setIsMinimized(true)
+    try {
+      await invoke("set_chat_minimized", { ticketId, minimized: true })
+    } catch (err) {
+      console.error("Erro ao minimizar janela:", err)
+    }
+  }
+
+  const handleExpand = async () => {
+    setIsMinimized(false)
+    try {
+      await invoke("set_chat_minimized", { ticketId, minimized: false })
+    } catch (err) {
+      console.error("Erro ao expandir janela:", err)
+    }
   }
 
   const handleClose = () => {
@@ -357,9 +375,9 @@ export function ChatWidget({ ticketId }: ChatWidgetProps) {
   // Versão minimizada (chip compacto igual web)
   if (isMinimized) {
     return (
-      <div className="flex h-screen flex-col items-center justify-end bg-transparent p-4">
+      <div className="flex h-full w-full items-center justify-center bg-transparent">
         <button
-          onClick={() => setIsMinimized(false)}
+          onClick={handleExpand}
           className="flex items-center gap-2 rounded-full bg-black px-4 py-2 text-white shadow-lg hover:bg-black/90"
         >
           <MessageCircle className="size-4" />