Melhora UX do chat no desktop

apps/desktop/src-tauri/src/chat.rs

@@ -1060,6 +1060,21 @@ async fn process_chat_update(
 // Serializa operacoes de janela para evitar race/deadlock no Windows (winit/WebView2).
 static WINDOW_OP_LOCK: Lazy<Mutex<()>> = Lazy::new(|| Mutex::new(()));
 
+fn hide_other_chat_windows(app: &tauri::AppHandle, active_label: &str) {
+    for (label, window) in app.webview_windows() {
+        if !label.starts_with("chat-") {
+            continue;
+        }
+        if label == active_label {
+            continue;
+        }
+        let _ = window.hide();
+    }
+    if let Some(hub) = app.get_webview_window(HUB_WINDOW_LABEL) {
+        let _ = hub.hide();
+    }
+}
+
 fn resolve_chat_window_position(
     app: &tauri::AppHandle,
     window: Option<&tauri::WebviewWindow>,
@@ -1115,6 +1130,10 @@ fn open_chat_window_with_state(app: &tauri::AppHandle, ticket_id: &str, ticket_r
         start_minimized
     );
 
+    if !start_minimized {
+        hide_other_chat_windows(app, &label);
+    }
+
     // Verificar se ja existe
     if let Some(window) = app.get_webview_window(&label) {
         let _ = window.set_ignore_cursor_events(false);
@@ -1221,6 +1240,10 @@ fn set_chat_minimized_unlocked(app: &tauri::AppHandle, ticket_id: &str, minimize
     let label = format!("chat-{}", ticket_id);
     let window = app.get_webview_window(&label).ok_or("Janela não encontrada")?;
 
+    if minimized {
+        hide_other_chat_windows(app, &label);
+    }
+
     // Tamanhos - chip minimizado com margem extra para badge (absolute -top-1 -right-1)
     let (width, height) = if minimized {
         (240.0, 52.0) // Tamanho com folga para "Ticket #XXX" e badge