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/pages/[...lang]/register.astro

@@ -15,8 +15,8 @@ import "../../styles/main.css";
 // One static register page per locale: /register, /es/register, /eu/register.
 export function getStaticPaths() {
   return [
-    { params: { lang: undefined }, props: { locale: "en" as Lang } },
-    { params: { lang: "es" }, props: { locale: "es" as Lang } },
+    { params: { lang: undefined }, props: { locale: "es" as Lang } },
+    { params: { lang: "en" }, props: { locale: "en" as Lang } },
     { params: { lang: "eu" }, props: { locale: "eu" as Lang } },
   ];
 }
@@ -27,12 +27,16 @@ const r = t.register;
 const { theme } = site;
 const headFont = HEAD_FONTS[theme.headFont] ?? HEAD_FONTS.pixelify;
 const homePath = LANG_PATH[locale];
-const requiresInvite = site.registrationRequiresInvite;
+const registerPath = LANG_REGISTER_PATH[locale];
+const accountPath = LANG_ACCOUNT_PATH[locale];
+// Visibility of the invite-code field (default hidden). Independent of the
+// backend gate (site.registrationRequiresInvite / Drasl RequireInvite).
+const showInvite = site.registrationShowInvite;
 
 // Strings the client script needs at runtime (kept minimal, passed via define:vars).
 const clientCfg = {
   apiUrl: site.draslApiUrl,
-  requiresInvite,
+  showInvite,
   submit: r.submit,
   submitting: r.submitting,
   skinUpload: r.skinUpload,
@@ -57,7 +61,7 @@ const clientCfg = {
     <meta name="viewport" content="width=device-width, initial-scale=1" />
     <title>{site.name} — {r.title}</title>
     <meta name="description" content={r.lead} />
-    <link rel="icon" type="image/png" href="/logo.png" />
+    <link rel="icon" type="image/png" href="/favicon.png" />
     <link rel="stylesheet" href="/fonts/fonts.css" />
     {LANGS.map((l) => <link rel="alternate" hreflang={l} href={LANG_REGISTER_PATH[l]} />)}
   </head>
@@ -82,6 +86,8 @@ const clientCfg = {
             >{LANG_LABEL[l]}</a>
           ))}
         </div>
+        <a class="mc-btn sm" href={registerPath}>{t.nav.register}</a>
+        <a class="mc-btn sm" href={accountPath}>{t.nav.login}</a>
         <a class="mc-btn primary sm" href={`${homePath}#join`}>{t.nav.play}</a>
       </div>
     </header>
@@ -106,7 +112,7 @@ const clientCfg = {
                 <input class="reg-input" id="reg-password" name="password"
                   type="password" autocomplete="new-password" placeholder={r.passwordPlaceholder} required />
               </div>
-              {requiresInvite && (
+              {showInvite && (
                 <div class="reg-field">
                   <label for="reg-invite">{r.inviteLabel}</label>
                   <input class="reg-input" id="reg-invite" name="invite"
@@ -208,7 +214,7 @@ const clientCfg = {
         const password = $("reg-password").value;
         const inviteEl = $("reg-invite");
         const invite = inviteEl ? inviteEl.value.trim() : null;
-        if (!username || !password || (cfg.requiresInvite && !invite)) {
+        if (!username || !password || (cfg.showInvite && !invite)) {
           showErr(errBox, cfg.errFields);
           return;
         }