Fix duration format and minimized chat layout

- Format duration as hours+minutes when > 60min (e.g., 2h 26min)
- Change minimized chat to compact chip style (matching web)

🤖 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

@@ -332,28 +332,20 @@ export function ChatWidget({ ticketId }: ChatWidgetProps) {
     )
   }
 
-  // Versao minimizada (recolhida)
+  // Versao minimizada (chip compacto igual web)
   if (isMinimized) {
     return (
-      <div className="flex h-screen flex-col bg-white">
+      <div className="flex h-screen flex-col items-center justify-end bg-transparent p-4">
         <button
           onClick={() => setIsMinimized(false)}
-          data-tauri-drag-region
-          className="flex w-full items-center gap-3 border-b border-slate-200 bg-slate-50 px-4 py-3 text-left hover:bg-slate-100"
+          className="flex items-center gap-2 rounded-full bg-black px-4 py-2 text-white shadow-lg hover:bg-black/90"
         >
-          <div className="flex size-10 items-center justify-center rounded-full bg-black text-white">
-            <MessageCircle className="size-5" />
-          </div>
-          <div className="flex-1">
-            <div className="flex items-center gap-2">
-              <p className="text-sm font-semibold text-slate-900">
-                Chat #{ticketInfo?.ref}
-              </p>
-              <span className="size-2 rounded-full bg-emerald-500" />
-            </div>
-            <p className="text-xs text-slate-500">Clique para expandir</p>
-          </div>
-          <ChevronUp className="size-4 text-slate-400" />
+          <MessageCircle className="size-4" />
+          <span className="text-sm font-medium">
+            Chat #{ticketInfo?.ref}
+          </span>
+          <span className="size-2 rounded-full bg-emerald-400" />
+          <ChevronUp className="size-4" />
         </button>
       </div>
     )