Merge 0.18 into the portal re-theme, keeping the removed sections out

relay!139 expanded the landing page's "new in the app" section for 0.18,
from three items to five, in both languages. This branch had removed that
section along with "good to know" and "how it works", so the two sides
disagreed about whether those sections exist at all.

Resolved by taking 0.18's landing pages and removing the three sections
again, which is the owner's call: they stay out. 0.18's own additions to
the messenger page, the install page and the release notes are kept, and
the release page still carries what changed in 0.18.

The hero button pointing at the how-it-works section goes with it a second
time, in both languages.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

Resources/Views/es/get.leaf

@@ -44,10 +44,10 @@
       elegido una contraseña es una forma peor de descubrirlo.
     </p>
     <p class="fineprint">
-      <strong>¿Tienes instalada una versión anterior? Reemplázala.</strong> La versión 0.17
-      te deja reaccionar a una sola persona dentro de un grupo, reaccionar durante
-      una llamada, y hablar fuera de registro para que ningún teléfono lo escriba.
-      Instalar encima conserva tu cuenta y tus conversaciones.
+      <strong>¿Tienes instalada una versión anterior? Reemplázala.</strong> La versión 0.18
+      añade una encuesta en la que nadie se entera de lo que votó una persona, y te
+      deja pasar una llamada a otro de tus dispositivos sin colgarle a la otra
+      persona. Instalar encima conserva tu cuenta y tus conversaciones.
       <a href="/releases">Qué ha cambiado</a>.
     </p>
     <p class="fineprint">

Resources/Views/es/messages.leaf

@@ -195,6 +195,32 @@
           pantalla.
         </p>
       </article>
+      <article class="card">
+        <span class="card-icon" aria-hidden="true"><svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="1.5" stroke-linecap="round" stroke-linejoin="round"><path d="M4 20V10"/><path d="M10 20V4"/><path d="M16 20v-7"/><path d="M22 20H2"/></svg></span>
+        <h4>Una encuesta que nadie puede atribuir</h4>
+        <p>
+          Pregúntale algo a un grupo y el voto de nadie se le envía a nadie: ni
+          al servidor, ni a ti que preguntas. Cada voto se parte en trozos
+          aleatorios, uno por miembro, y cada cual publica solo la suma de los
+          trozos que le tocaron; sumando esas sumas salen los recuentos. Todos
+          tienen que votar antes de que haya resultado, porque si falta uno
+          queda un número aleatorio en el total y no un recuento más pequeño.
+          Todos los demás tendrían que ponerse de acuerdo para saber lo que votó
+          una persona, y en un grupo de dos eso no es nadie, así que ahí no
+          usamos la palabra anónima.
+        </p>
+      </article>
+      <article class="card">
+        <span class="card-icon" aria-hidden="true"><svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="1.5" stroke-linecap="round" stroke-linejoin="round"><rect x="2" y="4" width="13" height="10" rx="2"/><rect x="16" y="10" width="6" height="10" rx="1.5"/><path d="M6 20h5"/></svg></span>
+        <h4>Pasa una llamada a otro dispositivo</h4>
+        <p>
+          Estás en una llamada en el teléfono, la coges en la tableta y sigues
+          hablando. La otra persona oye un hueco corto, no sale de su pantalla
+          de llamada, y le queda una llamada en su registro y no dos. En ningún
+          momento se le cuelga, y si ningún dispositivo la coge, la llamada se
+          queda exactamente donde estaba.
+        </p>
+      </article>
     </div>
   </div>
 </section>

Resources/Views/get.leaf

@@ -45,10 +45,10 @@
       something and chosen a password is a worse way to learn it.
     </p>
     <p class="fineprint">
-      <strong>Installed an earlier build? Replace it.</strong> Version 0.17
-      lets you react to one person inside a group, react during a call, and
-      hold a conversation off the record so that neither phone writes it
-      down. Installing over the top keeps your account and your
+      <strong>Installed an earlier build? Replace it.</strong> Version 0.18
+      adds a poll where nobody learns how one person voted, and lets you move a
+      call to another of your own devices without the other person being hung
+      up on. Installing over the top keeps your account and your
       conversations.
       <a href="/releases">What changed</a>.
     </p>

Resources/Views/messages.leaf

@@ -185,6 +185,32 @@
           screenshot.
         </p>
       </article>
+      <article class="card">
+        <span class="card-icon" aria-hidden="true"><svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="1.5" stroke-linecap="round" stroke-linejoin="round"><path d="M4 20V10"/><path d="M10 20V4"/><path d="M16 20v-7"/><path d="M22 20H2"/></svg></span>
+        <h4>A poll nobody can attribute</h4>
+        <p>
+          Ask a group something and no vote is sent to anybody, not to the
+          server and not to you as the person asking. Each vote is split into
+          random pieces, one per member, and everybody publishes only the sum of
+          the pieces they were handed; adding those sums gives the counts.
+          Everyone has to vote before there is a result, because a missing one
+          leaves a random number in the total rather than a smaller count.
+          Everyone other than the voter would have to work together to know how
+          one person voted, and in a group of two that is nobody, so the word
+          anonymous is not offered for a pair.
+        </p>
+      </article>
+      <article class="card">
+        <span class="card-icon" aria-hidden="true"><svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="1.5" stroke-linecap="round" stroke-linejoin="round"><rect x="2" y="4" width="13" height="10" rx="2"/><rect x="16" y="10" width="6" height="10" rx="1.5"/><path d="M6 20h5"/></svg></span>
+        <h4>Carry a call to another device</h4>
+        <p>
+          On a call on your phone, pick it up on the tablet and keep talking.
+          The other person hears a short gap, never leaves their call screen,
+          and gets one call in their log rather than two. They are never hung up
+          on at any point, and if no device takes it the call stays exactly
+          where it was.
+        </p>
+      </article>
     </div>
   </div>
 </section>

Resources/releases.json

@@ -1,4 +1,52 @@
 [
+  {
+    "date": "2026-09-12",
+    "platforms": [
+      {
+        "name": "android",
+        "version": "0.18"
+      }
+    ],
+    "headline": "A poll nobody can attribute, and a call you can carry to another device.",
+    "changes": [
+      {
+        "kind": "new",
+        "text": "Ask a group something without anybody learning how one person voted. A vote is never sent to anybody at all, not to the person asking and not to the server: it is split into random pieces, one per member, and each member publishes only the sum of the pieces they were handed. Adding those sums gives the counts. Everyone has to vote before there is a result, because a missing one leaves a random number in the total rather than a smaller count. Everyone other than the voter would have to work together to know how one person voted, which is what the app says rather than the shorter claim."
+      },
+      {
+        "kind": "new",
+        "text": "Move a call to another of your own devices. On a call on the phone, walk to the desk, take it there, and keep talking. The other person hears a short gap and nothing else, stays on their call screen, and gets one call in their log rather than two. If no device takes it the call stays exactly where it was."
+      },
+      {
+        "kind": "new",
+        "text": "On iPhone, Face ID opens Files and the wallet. If the app lock is on, unlocking the app is enough and neither one asks for your passphrase again. With the lock off they ask for it, as before."
+      },
+      {
+        "kind": "new",
+        "text": "On iPhone, you can ask for your passphrase as well as the lock, separately for messages, Files and the wallet. Off by default, and only offered where the app lock is on, because without the lock there is no first factor for it to be second to."
+      },
+      {
+        "kind": "fixed",
+        "text": "Hanging up now stops the ring on the other phone. The end of a call was not treated as time-critical, so a phone that was asleep never woke for it and went on ringing for a caller who had already gone."
+      },
+      {
+        "kind": "fixed",
+        "text": "Answering or declining works when several calls arrive at once. A second call could take over the first one on screen, leaving a call nothing could end."
+      },
+      {
+        "kind": "fixed",
+        "text": "Calls you missed reach the call log. They were filed in the conversation and nowhere else, so the Calls screen showed outgoing calls alone."
+      },
+      {
+        "kind": "fixed",
+        "text": "Setting up Files asks for your passphrase once. It asked twice, which suggested it was a different passphrase from the one you sign in with. It is the same one."
+      },
+      {
+        "kind": "fixed",
+        "text": "The sign-in screen shows the app’s own mark instead of a letter in a box."
+      }
+    ]
+  },
   {
     "date": "2026-09-12",
     "platforms": [