diff --git a/releases-manifest.json b/releases-manifest.json
index 310e06e..d770f0c 100644
--- a/releases-manifest.json
+++ b/releases-manifest.json
@@ -5,6 +5,20 @@
     "https://dl.silentmode.st/"
   ],
   "releases": [
+    {
+      "id": "theseus-navigator",
+      "product": "Theseus Navigator",
+      "version": "0.3.88",
+      "date": "2026-10-08",
+      "platform": "win-x64",
+      "signed": false,
+      "signingAuthority": null,
+      "changes": "A tab moved to its own window can go back: drag it onto another window's tab bar, or right-click it and pick Move to window. Proton Mail joins the sidebar, at the top. The sidebar icons can be dragged into any order, web apps and extensions together, and a site you add yourself now shows its icon instead of a letter. A link an extension opens to a sidebar app's site (Send on Telegram) opens in that app's panel.",
+      "files": {
+        "TheseusNavigator-0.3.88-portable.exe": "ded04245b2f1f1cc7a2fee1607fa604c9381d59abdbea1a473c0dcb2567b9c90",
+        "TheseusNavigator-Setup-0.3.88.exe": "30cde8897996af7a88e21c95afc57b7a4eaab860083068678316aec094d3c610"
+      }
+    },
     {
       "id": "theseus-navigator",
       "product": "Theseus Navigator",
diff --git a/releases/index.html b/releases/index.html
index d40ccc8..22263ff 100644
--- a/releases/index.html
+++ b/releases/index.html
@@ -58,16 +58,16 @@
      mirror cannot change what you check against here.</p>
 
   <div class="rel">
-    <h2>Theseus Navigator <span style="color:var(--acid)">0.3.87</span></h2>
-    <div class="meta">Windows 64-bit · unsigned · 2026-10-08 · <b>0.3.87 — your apps stay signed in</b> — WhatsApp, Telegram and the other web apps in the sidebar, and the apps you installed, now stay signed in across restarts. Clearing site storage on quit used to wipe the place they keep their login, so they signed out at every launch. The switch that keeps them signed in now sits under both clearing switches in Settings › Privacy and says what it covers.</div>
+    <h2>Theseus Navigator <span style="color:var(--acid)">0.3.88</span></h2>
+    <div class="meta">Windows 64-bit · unsigned · 2026-10-08 · <b>0.3.88 — tabs go back, sidebar order and icons, Proton Mail</b> — A tab moved to its own window can go back: drag it onto another window's tab bar, or right-click it and pick Move to window. Proton Mail joins the sidebar, at the top. The sidebar icons can be dragged into any order, web apps and extensions together, and a site you add yourself now shows its icon instead of a letter. A link an extension opens to a sidebar app's site (Send on Telegram) opens in that app's panel.</div>
 
     <div class="file">
-      <div class="n"><a href="https://dl.silentmode.st/TheseusNavigator-Setup-0.3.87.exe">TheseusNavigator-Setup-0.3.87.exe</a> — installer</div>
-      <code>1ce80b888ac64ff3729635a9b5d2e9108f5306ccf7020eb49fcc38321464ed2c</code>
+      <div class="n"><a href="https://dl.silentmode.st/TheseusNavigator-Setup-0.3.88.exe">TheseusNavigator-Setup-0.3.88.exe</a> — installer</div>
+      <code>30cde8897996af7a88e21c95afc57b7a4eaab860083068678316aec094d3c610</code>
     </div>
     <div class="file">
-      <div class="n"><a href="https://dl.silentmode.st/TheseusNavigator-0.3.87-portable.exe">TheseusNavigator-0.3.87-portable.exe</a> — portable</div>
-      <code>bf069cf377da9f14460ac879acd614dd296c3605d673d1194e2ca75a68e65893</code>
+      <div class="n"><a href="https://dl.silentmode.st/TheseusNavigator-0.3.88-portable.exe">TheseusNavigator-0.3.88-portable.exe</a> — portable</div>
+      <code>ded04245b2f1f1cc7a2fee1607fa604c9381d59abdbea1a473c0dcb2567b9c90</code>
     </div>
   </div>
 
@@ -76,11 +76,11 @@
     <div class="meta">Windows 64-bit · unsigned · 2026-10-04 · <b>0.3.77 — Translator engine choice, Cloudflare block gets a .bch mirror hint</b> — Settings › Language grows a <b>Translator engine</b> row: pick between <b>LibreTranslate (hosted)</b> and <b>Bergamot (on-device, WASM)</b>. Bergamot's engine isn't bundled yet so picking it today still routes through LibreTranslate with a one-time notice — see <a href="https://bergamot.x">bergamot.x</a> for the plan. Cloudflare Bot Fight 503s now land on a branded error page that explains why Electron browsers trip the fingerprint check, and offers a one-click retry to the site's <code style="display:inline">.bch</code> mirror when one is published (with the original path preserved). A long-standing bug where cert errors during an HTTPS fallback were silently swallowed is fixed. Bundles Pithos 0.3.13 (menu reflows in setup order with the account on top, files waiting to upload are shown and go up on their own).</div>
 
     <div class="file">
-      <div class="n"><a href="https://dl.silentmode.st/TheseusNavigator-Setup-0.3.87.exe">TheseusNavigator-Setup-0.3.77.exe</a> — installer</div>
+      <div class="n"><a href="https://dl.silentmode.st/TheseusNavigator-Setup-0.3.88.exe">TheseusNavigator-Setup-0.3.77.exe</a> — installer</div>
       <code>ab4135a9b33c9b74d65db0d302fa8b12198e17104dfe9c2c9508995b0cbe6df8</code>
     </div>
     <div class="file">
-      <div class="n"><a href="https://dl.silentmode.st/TheseusNavigator-0.3.87-portable.exe">TheseusNavigator-0.3.77-portable.exe</a> — portable</div>
+      <div class="n"><a href="https://dl.silentmode.st/TheseusNavigator-0.3.88-portable.exe">TheseusNavigator-0.3.77-portable.exe</a> — portable</div>
       <code>a01ad6b8c1c491d25201fb15312edf2a7621c66f250dd4cb1da217a255f487a5</code>
     </div>
   </div>
@@ -90,11 +90,11 @@
     <div class="meta">Windows 64-bit · unsigned · 2026-10-04 · <b>0.3.76 — Pithos at pithos.sia, music in background tabs</b> — Pithos now opens at its own address: pithos.sia/your-user/your-drive/your-folder, signed in while your vault is unlocked, instead of a 127.0.0.1 address. Music keeps playing when you switch to another tab, since tabs playing sound are no longer paused in the background. A widened left panel now covers the page instead of squeezing it and the right sidebar, and the tab that was open when you closed Theseus loads on launch. Bundles Pithos 0.3.10 (icon/list/details views, a layout that fits the sidebar, a music player, an Account page and an update button) and Aegis 0.31.0 (the security audit fixes).</div>
 
     <div class="file">
-      <div class="n"><a href="https://dl.silentmode.st/TheseusNavigator-Setup-0.3.87.exe">TheseusNavigator-Setup-0.3.76.exe</a> — installer</div>
+      <div class="n"><a href="https://dl.silentmode.st/TheseusNavigator-Setup-0.3.88.exe">TheseusNavigator-Setup-0.3.76.exe</a> — installer</div>
       <code>9e5c4b6b69711fd3706b768ed016c217c09b2f8bb480661b9c9b38e0d092b7e9</code>
     </div>
     <div class="file">
-      <div class="n"><a href="https://dl.silentmode.st/TheseusNavigator-0.3.87-portable.exe">TheseusNavigator-0.3.76-portable.exe</a> — portable</div>
+      <div class="n"><a href="https://dl.silentmode.st/TheseusNavigator-0.3.88-portable.exe">TheseusNavigator-0.3.76-portable.exe</a> — portable</div>
       <code>b223eb14efd6ac8fafd4c817ac81ead2038dc366f4740e8fe15b65cfad0e5c49</code>
     </div>
   </div>
diff --git a/theseus/index.html b/theseus/index.html
index d502bab..0ff1604 100644
--- a/theseus/index.html
+++ b/theseus/index.html
@@ -144,7 +144,7 @@
         <h3>Theseus for Windows</h3>
         <p class="desc">Full-window desktop browser with Tor toggle, search bar, password
            vault and add-ons. macOS and Linux not yet packaged.</p>
-        <div class="meta">v0.3.87 · installer ~137 MB · portable ~137 MB · unsigned</div>
+        <div class="meta">v0.3.88 · installer ~137 MB · portable ~137 MB · unsigned</div>
         <div class="buttons">
           <a class="btn acid" href="https://dl.silentmode.st/latest/TheseusNavigator-Setup.exe">Installer</a>
           <a class="btn ghost" href="https://dl.silentmode.st/latest/TheseusNavigator-portable.exe">Portable .exe</a>