feat(landing): rework — es default, 2-step join, roster + account polish

- Default language Spanish at root /, English moves to /en/ (eu unchanged):
  getStaticPaths {lang:undefined}->es + LANG_*_PATH maps swapped in ui.ts.
- Section order: hero -> join -> status -> members -> mods -> features.
- Join flow 3 -> 2 steps (drop the Connect/IP step; launcher handles the
  address). Remove the hero IP CopyChip. Header CTA renamed Play/Jugar/Jolastu
  and gains Register + Login links on all four pages.
- Account page: hide the whole login block once authenticated (not just the
  form), add an avatar Refresh button (cache-busted NMSR re-fetch), flatten the
  avatar (no bevel). New i18n key account.refresh.
- Register page: new REGISTRATION_SHOW_INVITE env (default false/hidden) toggles
  the invite-code field independently of the REGISTRATION_MODE backend gate.
- Members roster: drop the `admin` account, render full-body via a new
  ROSTER_AVATAR_MODE (default fullbodyiso); portrait tiles.
- Style: flatten emboss on feature icons (.picon) + player tiles (.roster-tile).
  PixelIcon gains optional image support (/icons/<name>.png|svg).
- Favicon now /favicon.png (committed) on all pages.
- Docs: plan/09-landing.md Assets section (logo/favicon/features-icons drop
  points) + default-language note; .env.example documents the two new vars.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

landing/src/data/site.ts

@@ -14,10 +14,14 @@ const BASE_DOMAIN = process.env.BASE_DOMAIN ?? "ulicraft.local";
 // is absent/empty (fresh checkout), fall back to the honest "50+" estimate.
 const MOD_COUNT_KEY = MODS.count > 0 ? `${MODS.count}` : "50+";
 
-// NMSR render mode for avatar tiles (online roster + members grid). Read at
-// build time, same as BASE_DOMAIN. e.g. "headiso" | "head" | "fullbody".
+// NMSR render mode for avatar tiles. AVATAR_MODE is the ServerCard online row +
+// account preview (heads); ROSTER_AVATAR_MODE is the Members grid (full body by
+// default). Read at build time, same as BASE_DOMAIN. e.g. "headiso" | "head" |
+// "fullbody" | "fullbodyiso".
 // @ts-ignore — `process` is untyped here (no @types/node), same as BASE_DOMAIN.
 const AVATAR_MODE = process.env.AVATAR_MODE ?? "headiso";
+// @ts-ignore — `process` is untyped here (no @types/node).
+const ROSTER_AVATAR_MODE = process.env.ROSTER_AVATAR_MODE ?? "fullbodyiso";
 
 // Launcher download manifest (per launcher-manifest.schema.json). The
 // custom-launcher release flow syncs launcher-manifest.json into this dir
@@ -88,6 +92,15 @@ const LAUNCHER_MANIFEST = loadLauncherManifest();
 // render-config.sh. "invite" => the register form must collect an invite code.
 const REGISTRATION_MODE = process.env.REGISTRATION_MODE ?? "invite";
 
+// REGISTRATION_SHOW_INVITE (true|false, default false=hidden) ONLY toggles the
+// visibility of the invite-code field on the register form. The backend invite
+// gate stays on Drasl's RequireInvite (driven by REGISTRATION_MODE). Decoupled on
+// purpose: invites are usually admin-minted and the field is hidden by default.
+// CAVEAT: if REGISTRATION_MODE=invite (backend requires a code) but this is
+// false, public self-registration can't supply one — set both together.
+// @ts-ignore — `process` is untyped here (no @types/node).
+const REGISTRATION_SHOW_INVITE = process.env.REGISTRATION_SHOW_INVITE ?? "false";
+
 // Minecraft / pack facts, surfaced in a few places.
 const MC_VERSION = "1.21.1";
 
@@ -97,9 +110,12 @@ export const site = {
   mcVersion: MC_VERSION,
 
   // Register form behaviour, driven by REGISTRATION_MODE in .env.
-  //   true  => show the invite-code field (Drasl RequireInvite = true)
+  //   true  => Drasl RequireInvite = true (backend gate)
   //   false => open self-registration
   registrationRequiresInvite: REGISTRATION_MODE === "invite",
+  // Whether the invite-code FIELD is shown on the register form (default false).
+  // Independent of the backend gate above — see REGISTRATION_SHOW_INVITE note.
+  registrationShowInvite: REGISTRATION_SHOW_INVITE === "true",
 
   // Design knobs (replace the design's in-browser TweaksPanel). Baked at build.
   //   mood:     "grass" | "nether" | "end"
@@ -127,9 +143,11 @@ export const site = {
   // Mojang/Crafatar — head URL is `${avatarUrl}/headiso/<uuid>?size=64`.
   avatarUrl: `https://avatar.${BASE_DOMAIN}`,
 
-  // NMSR render mode for avatar tiles (ServerCard online row + PlayerRoster
-  // members grid). Avatar URL = `${avatarUrl}/${avatarMode}/<uuid>?size=N`.
+  // NMSR render mode for avatar tiles. Avatar URL = `${avatarUrl}/<mode>/<uuid>?size=N`.
+  //   avatarMode       → ServerCard online row + account preview (heads)
+  //   rosterAvatarMode → PlayerRoster members grid (full body)
   avatarMode: AVATAR_MODE,
+  rosterAvatarMode: ROSTER_AVATAR_MODE,
 
   // Uptime Kuma status page (external link in footer).
   statusUrl: `https://status.${BASE_DOMAIN}`,