feat(landing): self-serve registration page via Drasl API (B1)

Add a static /register page (en/es/eu) that calls the Drasl REST API v2
directly from the browser: register -> login -> optional skin upload, all
in the pixel design. Guests never touch Drasl's own web UI.

Drasl config gains the pieces this needs:
- CORSAllowOrigins scoped to the apex (the API has no CORS until set;
  never "*").
- [RateLimit] for the now public-facing anonymous POST /users.
- [RegistrationNewPlayer] with RequireInvite driven by a new
  REGISTRATION_MODE (invite|open) .env flag.

REGISTRATION_MODE has two consumers from one key: render-config.sh derives
the TOML boolean for Drasl (drasl is TOML-only, no env), and the landing
build reads it to show/hide the invite-code field. render-config.sh halts
on any value other than invite/open.

Security verified against drasl source: anonymous POST /users cannot set
privileged fields (isAdmin/isLocked/chosenUuid/maxPlayerCount are gated on
callerIsAdmin in CreateUser), so browser-direct registration is safe.

Docs: plan/16-landing-registration.md captures the design + the B1 vs fork
decision; build-order, deploy, and the deploy skill wire REGISTRATION_MODE
and the landing-rebuild requirement (www/ is gitignored, not updated by a
git pull).

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

landing/src/i18n/ui.ts

@@ -13,6 +13,12 @@ export const LANGS: Lang[] = ["en", "es", "eu"];
 export const LANG_LABEL: Record<Lang, string> = { en: "EN", es: "ES", eu: "EU" };
 // URL path per locale (en is default, served at root).
 export const LANG_PATH: Record<Lang, string> = { en: "/", es: "/es/", eu: "/eu/" };
+// Register page path per locale (mirrors LANG_PATH: en at /register).
+export const LANG_REGISTER_PATH: Record<Lang, string> = {
+  en: "/register",
+  es: "/es/register",
+  eu: "/eu/register",
+};
 
 export interface UI {
   htmlLang: string;
@@ -65,6 +71,39 @@ export interface UI {
     };
   };
   footer: { join: string; disc: string };
+  register: {
+    navHome: string; // "← Home" link in nav
+    eyebrow: string;
+    title: string;
+    lead: string;
+    usernameLabel: string;
+    usernamePlaceholder: string;
+    passwordLabel: string;
+    passwordPlaceholder: string;
+    inviteLabel: string;
+    invitePlaceholder: string;
+    inviteHint: string; // where to get a code
+    submit: string;
+    submitting: string;
+    haveAccount: string; // "Already have an account?"
+    loginLink: string; // links to the Drasl web UI
+    successTitle: string;
+    successBody: string; // {name} = player name
+    uuidLabel: string;
+    skinTitle: string;
+    skinLead: string;
+    skinChoose: string;
+    modelLabel: string;
+    modelClassic: string;
+    modelSlim: string;
+    skinUpload: string;
+    skinUploading: string;
+    skinOk: string;
+    finish: string; // proceed to How to Join
+    errFields: string;
+    errSkinType: string;
+    errNetwork: string;
+  };
 }
 
 export const ui: Record<Lang, UI> = {
@@ -152,6 +191,39 @@ export const ui: Record<Lang, UI> = {
       join: "How to Join",
       disc: "Not affiliated with Mojang or Microsoft. Minecraft is a trademark of Mojang AB.",
     },
+    register: {
+      navHome: "← Home",
+      eyebrow: "Account",
+      title: "Create your Ulicraft account.",
+      lead: "One username and password for the server, your skin, and your cape. Takes a minute.",
+      usernameLabel: "Username",
+      usernamePlaceholder: "your in-game name",
+      passwordLabel: "Password",
+      passwordPlaceholder: "choose a password",
+      inviteLabel: "Invite code",
+      invitePlaceholder: "paste your invite code",
+      inviteHint: "Ask an admin for an invite code.",
+      submit: "Create account",
+      submitting: "Creating…",
+      haveAccount: "Already have an account?",
+      loginLink: "Manage it here",
+      successTitle: "Account created.",
+      successBody: "Welcome, {name}. You can set a skin now, or head straight to How to Join.",
+      uuidLabel: "Player UUID",
+      skinTitle: "Set your skin (optional)",
+      skinLead: "Upload a Minecraft skin PNG. You can always change it later in the account page.",
+      skinChoose: "Choose PNG…",
+      modelLabel: "Model",
+      modelClassic: "Classic",
+      modelSlim: "Slim",
+      skinUpload: "Upload skin",
+      skinUploading: "Uploading…",
+      skinOk: "Skin set!",
+      finish: "Continue to How to Join",
+      errFields: "Fill in every field.",
+      errSkinType: "Pick a PNG image.",
+      errNetwork: "Network error — try again.",
+    },
   },
 
   es: {
@@ -238,6 +310,39 @@ export const ui: Record<Lang, UI> = {
       join: "Cómo entrar",
       disc: "No afiliado a Mojang ni Microsoft. Minecraft es una marca de Mojang AB.",
     },
+    register: {
+      navHome: "← Inicio",
+      eyebrow: "Cuenta",
+      title: "Crea tu cuenta de Ulicraft.",
+      lead: "Un usuario y contraseña para el servidor, tu skin y tu capa. Cosa de un minuto.",
+      usernameLabel: "Usuario",
+      usernamePlaceholder: "tu nombre en el juego",
+      passwordLabel: "Contraseña",
+      passwordPlaceholder: "elige una contraseña",
+      inviteLabel: "Código de invitación",
+      invitePlaceholder: "pega tu código de invitación",
+      inviteHint: "Pide un código de invitación a un admin.",
+      submit: "Crear cuenta",
+      submitting: "Creando…",
+      haveAccount: "¿Ya tienes cuenta?",
+      loginLink: "Gestiónala aquí",
+      successTitle: "Cuenta creada.",
+      successBody: "Bienvenido, {name}. Puedes poner una skin ahora o ir directo a Cómo entrar.",
+      uuidLabel: "UUID del jugador",
+      skinTitle: "Pon tu skin (opcional)",
+      skinLead: "Sube un PNG de skin de Minecraft. Siempre puedes cambiarla luego en tu cuenta.",
+      skinChoose: "Elegir PNG…",
+      modelLabel: "Modelo",
+      modelClassic: "Clásico",
+      modelSlim: "Fino",
+      skinUpload: "Subir skin",
+      skinUploading: "Subiendo…",
+      skinOk: "¡Skin puesta!",
+      finish: "Continuar a Cómo entrar",
+      errFields: "Rellena todos los campos.",
+      errSkinType: "Elige una imagen PNG.",
+      errNetwork: "Error de red: inténtalo de nuevo.",
+    },
   },
 
   eu: {
@@ -324,5 +429,38 @@ export const ui: Record<Lang, UI> = {
       join: "Nola sartu",
       disc: "Ez dago Mojang edo Microsoft-ekin lotuta. Minecraft Mojang AB-ren marka da.",
     },
+    register: {
+      navHome: "← Hasiera",
+      eyebrow: "Kontua",
+      title: "Sortu zure Ulicraft kontua.",
+      lead: "Erabiltzaile eta pasahitz bat zerbitzarirako, zure azalerako eta kaparako. Minutu batean.",
+      usernameLabel: "Erabiltzailea",
+      usernamePlaceholder: "zure jokoko izena",
+      passwordLabel: "Pasahitza",
+      passwordPlaceholder: "aukeratu pasahitz bat",
+      inviteLabel: "Gonbidapen-kodea",
+      invitePlaceholder: "itsatsi zure gonbidapen-kodea",
+      inviteHint: "Eskatu gonbidapen-kode bat admin bati.",
+      submit: "Sortu kontua",
+      submitting: "Sortzen…",
+      haveAccount: "Baduzu kontua?",
+      loginLink: "Kudeatu hemen",
+      successTitle: "Kontua sortuta.",
+      successBody: "Ongi etorri, {name}. Azala orain jar dezakezu, edo zuzenean Nola sartu atalera joan.",
+      uuidLabel: "Jokalariaren UUIDa",
+      skinTitle: "Jarri zure azala (aukerakoa)",
+      skinLead: "Igo Minecraft azal PNG bat. Beti alda dezakezu gero zure kontuan.",
+      skinChoose: "Aukeratu PNGa…",
+      modelLabel: "Eredua",
+      modelClassic: "Klasikoa",
+      modelSlim: "Mehea",
+      skinUpload: "Igo azala",
+      skinUploading: "Igotzen…",
+      skinOk: "Azala jarrita!",
+      finish: "Jarraitu Nola sartura",
+      errFields: "Bete eremu guztiak.",
+      errSkinType: "Aukeratu PNG irudi bat.",
+      errNetwork: "Sare-errorea: saiatu berriro.",
+    },
   },
 };