How to deliver static js and css into html to client

I’m confused about the flow of serving the client fully in js/css/html
i’m placing home.js and home.css both inside assets/js and assets/css
and modifie my config to include them in the bundling

config :tailwind,
  version: "3.4.3",
  testespay: [
    args: ~w(
      --config=tailwind.config.js
      --input=css/app.css
      --input=css/home.css
      --output=../priv/static/assets/app.css
    ),
    cd: Path.expand("../assets", __DIR__)
  ]

config :esbuild,
  version: "0.17.11",
  testespay: [
    args:
      ~w(js/app.js js/home.js --bundle --target=es2017 --outdir=../priv/static/assets --external:/fonts/* --external:/images/*),
    cd: Path.expand("../assets", __DIR__),
    env: %{"NODE_PATH" => Path.expand("../deps", __DIR__)}
  ]

but now how do I import it into a html and deliver to client?
I made some mods to Endpoint but I confess that for now i have no idea of this is supposed to work

  plug Plug.Static,
    at: "/",
    from: :testespay,
    gzip: false,
    only: TestespayWeb.static_paths()

    plug Plug.Static,
    at: "/home",
    from: :testespay,
    gzip: false,
    only: ~w(assets home.html)

defmodule TestespayWeb.Router do
  use TestespayWeb, :router


  pipeline :browser do
   ...
  end


  pipeline :api do
    plug :accepts, ["json"]
  end

  scope "/", TestespayWeb do
    pipe_through :browser
    get "/home", HomeController, :show
  end


  scope "/api", TestespayWeb do
    pipe_through :api

    post "/create_contract", ContractController, :create
    get "/identify", IdentifyController, :find
  end

my controller

defmodule TestespayWeb.HomeController do
  use TestespayWeb, :controller

  def show(conn, _params) do
    conn
    |> put_resp_content_type("text/html")
    |> send_file(200, Path.join(:code.priv_dir(:testespay), "static/home/index.html"))
  end
end

now looking at the console on the browser, it’s looks like i’m seding my js and my css as files ( I can see the assets folder in my console directories) but my html file that is returned doesnt have neither js or css files

priv/
└── static/
├── assets/
│ ├── home.css
│ ├── home.js
└── templates/
└── home/
└── index.html.

and i’m importing with this syntax

and