$ saizeriya --help
usage: saizeriya [-h] <command> ...

Saizeriya order CLI.

positional arguments:
  <command>
    start       Start a new ordering session
    use         Resume a saved session
    list        List saved sessions
    rm          Remove a saved session
    tui         Launch the Textual TUI (requires the 'tui' extra)
    fetch-menu  Crawl menu data for shops

options:
  -h, --help    show this help message and exit

available commands in start/use REPL:
   state
    Show current session state
   people <count>
    Set number of people at the table
   lookup <code>
    Look up an item by code
   add [--mod-id MOD_ID] [--mod-count MOD_COUNT] [--reorder] <code> [<count>]
    Add an item to the cart
   cart
    Show cart contents
   cart-page
    Navigate to the cart page
   remove <index>
    Remove an item from the cart by index
   submit
    Submit the current order
   account
    Show account summary
   receipt
    Show receipt
   call [{staff,dessert}]
    Call staff or dessert service
   menu
    Navigate to the menu page
   history
    Navigate to order history
   reorder <code>
    Reorder a previously ordered item
   alcohol
    Confirm alcohol order
   check {order,last,midnight}
    Check order/last-order/midnight status
   help
    Show this help message
   exit
    Exit the REPL
   quit
    Exit the REPL

To start session named lunch and ener REPL:

saizeriya start lunch "https://ioes03.saizeriya.co.jp/saizeriya3/?..."