style: gofmt + fix errcheck lint warning

clients/clients_test.go

@@ -563,7 +563,7 @@ func TestLLMClient_StreamGenerateManyTokens(t *testing.T) {
 	var order []int
 	result, err := c.StreamGenerate(context.Background(), "q", "", "", func(tok string) {
 		var idx int
-		fmt.Sscanf(tok, "t%d ", &idx)
+		_, _ = fmt.Sscanf(tok, "t%d ", &idx)
 		mu.Lock()
 		order = append(order, idx)
 		mu.Unlock()