binomial logistic regression in lavaan

[perlatex]

Dear all,
Here, the independent variable X and the intermediate variable M are both continuous values,
but the dependent variable Y is a binary variable which is modeled in binomial logistic regression.
How to use lavaan to establish a structural equation model?

library(tidyverse)
library(palmerpenguins)

d <- penguins %>%
  drop_na() %>% 
  filter(species == "Gentoo") %>% 
  mutate(gender = if_else(sex == "male", 1, 0))
d


# If we only focus on the Y variable
mod <- glm(gender ~ 1 + body_mass_g + flipper_length_mm, 
           family = binomial(link = "logit"),
           data = d)  

But, I don't know how to use lavaan in this situation

library(lavaan)

model <- '
   # regression
     body_mass_g ~ a * flipper_length_mm
     gender      ~ cprime * flipper_length_mm + b * body_mass_g

   # effects
     indirect := a*b
     direct   := cprime
     total    := cprime + a*b

'

d1 <- d %>% mutate(gender = order(gender))
fit <- sem(model, 
           data      =  d1, 
           link      = "logit", 
           ordered   = c("gender")
           )

Thanks so much for your assistance!

Sincerely,
minjie