fix: interface conversion panic (#2060)

packages/tui/internal/components/chat/messages.go

@@ -746,9 +746,10 @@ func (m *messagesComponent) renderView() tea.Cmd {
 			} else {
 				for _, part := range response.Parts {
 					if part.CallID == m.app.CurrentPermission.CallID {
+						if toolPart, ok := part.AsUnion().(opencode.ToolPart); ok {
 							content := renderToolDetails(
 								m.app,
-							part.AsUnion().(opencode.ToolPart),
+								toolPart,
 								m.app.CurrentPermission,
 								width,
 							)
@@ -761,6 +762,7 @@ func (m *messagesComponent) renderView() tea.Cmd {
 					}
 				}
 			}
+		}
 
 		final := []string{}
 		clipboard := []string{}