# US-01 — Create an anonymous lobby

**As a** player who just opened the site,
**I want to** press one button and get a room code,
**so that** I can start a game with friends without creating an account.

## Acceptance criteria
1. The landing screen shows exactly one primary action: *Create lobby*.
2. Creating a lobby issues a 5-character code from the Crockford base32 alphabet
   (no `I`, `L`, `O`, `U`), uppercase, shown large and with a copy button.
3. No account, email, password, cookie consent, or third-party request is involved.
4. The browser stores only a random session token (`sessionStorage`) and the room code.
5. The creator is marked `host` and holds a seat; the room is in `LOBBY`.
6. Reload of the same tab with the same token returns the player to the same seat.
7. If the server is at `max_rooms`, the UI shows a clear "lobby full, try again" error
   instead of a broken screen.
8. An idle, empty lobby is garbage-collected.

## E2E suite
`tests/e2e/test_us01_create_lobby.py` — load `/`, create lobby, assert code shape,
reload → same seat, assert zero non-origin network requests.

## Phases
`01_runnable_service_scaffold`, `05_anonymous_lobbies_and_room_lifecycle`,
`07_canvas_client_and_hud`