diff --git a/blog/deciding-well-solved/index.html b/blog/deciding-well-solved/index.html
index 2fc28ac..1de19b4 100644
--- a/blog/deciding-well-solved/index.html
+++ b/blog/deciding-well-solved/index.html
@@ -144,7 +144,7 @@
 }
 </script>
 <script>
-  /* ─── theme boot · v5 · page ────────────────────────────────────
+  /* ─── theme boot · v6 · page ────────────────────────────────────
      Set the theme before anything paints. Generated from @robertblust/design —
      editing it here does nothing, because the next `npm run design` overwrites it.
 
@@ -187,13 +187,14 @@
     try {
       if (window.top !== window && /[?&]embed(&|$)/.test(location.search)) document.documentElement.setAttribute("data-embed", "");
     } catch (e) {}
-    // A conversation the tab keeps open: the keys are chat.js's, `chat` and `chat-size`, read
-    // the way it reads them. Never in a frame, which takes no chat of its own.
+    // A conversation the tab keeps open: the keys are chat.js's, `chat` in the tab's storage and
+    // `chat-size` in the browser's, read the way it reads them. Never in a frame, which takes no
+    // chat of its own.
     try {
       var r = document.documentElement, c = JSON.parse(sessionStorage.getItem("chat") || "null");
       if (c && c.open && window.top === window) {
         r.setAttribute("data-chat-waiting", location.host);
-        var z = JSON.parse(sessionStorage.getItem("chat-size") || "null");
+        var z = JSON.parse(localStorage.getItem("chat-size") || "null");
         if (z && z.w && z.h) { r.style.setProperty("--rbchat-kept-w", z.w + "px"); r.style.setProperty("--rbchat-kept-h", z.h + "px"); }
       }
     } catch (e) {}
diff --git a/blog/deciding-well-solved/og.sha b/blog/deciding-well-solved/og.sha
index a459b1b..622307c 100644
--- a/blog/deciding-well-solved/og.sha
+++ b/blog/deciding-well-solved/og.sha
@@ -1 +1 @@
-6fa00f1cdf203c25416e3789de3483bd459c6e42a49810cb723b4cb268b8ee6e
+bd374b662595438d2a64b876e5b5be50461e7bead089ad51c80660101ab023c8
diff --git a/blog/index.html b/blog/index.html
index b9df63d..76edc19 100644
--- a/blog/index.html
+++ b/blog/index.html
@@ -112,7 +112,7 @@
 }
 </script>
 <script>
-  /* ─── theme boot · v5 · page ────────────────────────────────────
+  /* ─── theme boot · v6 · page ────────────────────────────────────
      Set the theme before anything paints. Generated from @robertblust/design —
      editing it here does nothing, because the next `npm run design` overwrites it.
 
@@ -155,13 +155,14 @@
     try {
       if (window.top !== window && /[?&]embed(&|$)/.test(location.search)) document.documentElement.setAttribute("data-embed", "");
     } catch (e) {}
-    // A conversation the tab keeps open: the keys are chat.js's, `chat` and `chat-size`, read
-    // the way it reads them. Never in a frame, which takes no chat of its own.
+    // A conversation the tab keeps open: the keys are chat.js's, `chat` in the tab's storage and
+    // `chat-size` in the browser's, read the way it reads them. Never in a frame, which takes no
+    // chat of its own.
     try {
       var r = document.documentElement, c = JSON.parse(sessionStorage.getItem("chat") || "null");
       if (c && c.open && window.top === window) {
         r.setAttribute("data-chat-waiting", location.host);
-        var z = JSON.parse(sessionStorage.getItem("chat-size") || "null");
+        var z = JSON.parse(localStorage.getItem("chat-size") || "null");
         if (z && z.w && z.h) { r.style.setProperty("--rbchat-kept-w", z.w + "px"); r.style.setProperty("--rbchat-kept-h", z.h + "px"); }
       }
     } catch (e) {}
diff --git a/blog/og.sha b/blog/og.sha
index a8e45e3..11d4d35 100644
--- a/blog/og.sha
+++ b/blog/og.sha
@@ -1 +1 @@
-4c74b15f0943d1b60a4d319cb06d996d7580050c0816de6c4a2345d0518f161f
+159693450fffd0499d27c4771bd1fef9d4fdea78dc8132077fc431dd9e2fe1e0
diff --git a/blog/one-question-answered/index.html b/blog/one-question-answered/index.html
index 0cb2521..4cd8892 100644
--- a/blog/one-question-answered/index.html
+++ b/blog/one-question-answered/index.html
@@ -144,7 +144,7 @@
 }
 </script>
 <script>
-  /* ─── theme boot · v5 · page ────────────────────────────────────
+  /* ─── theme boot · v6 · page ────────────────────────────────────
      Set the theme before anything paints. Generated from @robertblust/design —
      editing it here does nothing, because the next `npm run design` overwrites it.
 
@@ -187,13 +187,14 @@
     try {
       if (window.top !== window && /[?&]embed(&|$)/.test(location.search)) document.documentElement.setAttribute("data-embed", "");
     } catch (e) {}
-    // A conversation the tab keeps open: the keys are chat.js's, `chat` and `chat-size`, read
-    // the way it reads them. Never in a frame, which takes no chat of its own.
+    // A conversation the tab keeps open: the keys are chat.js's, `chat` in the tab's storage and
+    // `chat-size` in the browser's, read the way it reads them. Never in a frame, which takes no
+    // chat of its own.
     try {
       var r = document.documentElement, c = JSON.parse(sessionStorage.getItem("chat") || "null");
       if (c && c.open && window.top === window) {
         r.setAttribute("data-chat-waiting", location.host);
-        var z = JSON.parse(sessionStorage.getItem("chat-size") || "null");
+        var z = JSON.parse(localStorage.getItem("chat-size") || "null");
         if (z && z.w && z.h) { r.style.setProperty("--rbchat-kept-w", z.w + "px"); r.style.setProperty("--rbchat-kept-h", z.h + "px"); }
       }
     } catch (e) {}
diff --git a/blog/one-question-answered/og.sha b/blog/one-question-answered/og.sha
index ee70b5a..cca29a2 100644
--- a/blog/one-question-answered/og.sha
+++ b/blog/one-question-answered/og.sha
@@ -1 +1 @@
-7514dd0b7f23a7b742a614cdd79dd9b5814c6feef5140629cac77fd2e2fc9395
+fc05950ec498af33cfe68fe0052ac42617ff4bcb4967ec3071eb751ec45d8b5a
diff --git a/chat.js b/chat.js
index 650e6b7..2ea2913 100644
--- a/chat.js
+++ b/chat.js
@@ -714,10 +714,11 @@
   // rendered, each answer with the entities it cited. Every access is wrapped, because a
   // browser with site data blocked throws on the first read and the chat still has to work.
   var STORE_KEY = "chat";
-  // How big the panel is, kept beside the conversation and for the same lifetime: a size is a
-  // choice about this tab's reading, not a preference to carry to the next visit, and the
-  // conversation it frames goes when the tab goes. Its own key, because it outlives any one
-  // conversation: a visitor who sizes the panel, empties it and asks again keeps the size.
+  // How big the panel is, kept in `localStorage` as `lang` and `theme` are: a size is a choice
+  // about how this visitor reads the chat on this screen, so it holds in every tab and on the
+  // next visit, where the conversation it frames goes when its tab goes. Its own key, because it
+  // is no part of any conversation: a link opened in a new tab finds the panel at the size the
+  // visitor gave it, with nothing else carried over.
   var SIZE_KEY = "chat-size";
   var MIN_W = 320, MIN_H = 260, STEP = 24;
   function stored(){
@@ -725,10 +726,10 @@
     catch (e) { return null; }
   }
   function storedSize(){
-    try { var raw = sessionStorage.getItem(SIZE_KEY); var v = raw ? JSON.parse(raw) : null; return v && v.w && v.h ? v : null; }
+    try { var raw = localStorage.getItem(SIZE_KEY); var v = raw ? JSON.parse(raw) : null; return v && v.w && v.h ? v : null; }
     catch (e) { return null; }
   }
-  function keepSize(w, h){ try { sessionStorage.setItem(SIZE_KEY, JSON.stringify({ w: w, h: h })); } catch (e) {} }
+  function keepSize(w, h){ try { localStorage.setItem(SIZE_KEY, JSON.stringify({ w: w, h: h })); } catch (e) {} }
 
   // Where the visitor was reading, kept with the conversation so the back button returns them
   // to it and not to the end. A place is a turn and a distance into its bubble, not a pixel
@@ -1872,9 +1873,10 @@
   var introPick = null;
   // The question a link carries, waiting: a card the visitor acts on, built from the strings and
   // never from markup, so whatever the link says is shown as text. Send hands it to send() as if
-  // typed, Edit puts it in the input to change, and Discard drops it. Under the notice while the
-  // intro stands, since that is what the visitor reads first; at the end of a conversation the
-  // tab already holds, since the intro is then out of sight above it.
+  // typed, Edit puts it in the input to change, and Discard drops it. It stands right after the
+  // intro's prompt line, where a question the visitor typed would stand, so the hello, the notice
+  // and what the panel offers read in the order they always do and the question is the last thing
+  // in the log; at the end of a conversation the tab already holds, for the same reason.
   function askCard(){
     var s = strings(langNow()).ask, card = el("div", "rbchat-ask"), row = el("div", "rbchat-ask-row");
     card.setAttribute("role", "group"); card.setAttribute("aria-label", s.label);
@@ -1892,9 +1894,10 @@
     askEl = card;
     return card;
   }
+  // Wherever the card stands it is the last thing in the log, so the log's end is where it shows.
   function showAsk(){
-    if (!linkAsk || (askEl && askEl.isConnected)) return;
-    log.appendChild(askCard());
+    if (!linkAsk) return;
+    if (!(askEl && askEl.isConnected)) log.appendChild(askCard());
     log.scrollTop = log.scrollHeight;
   }
 
@@ -1919,11 +1922,11 @@
     hello.appendChild(el("span", "rbchat-h2", lines[1]));
     introEl.appendChild(hello);
     notice = el("p", "rbchat-notice"); introEl.appendChild(notice); writeNotice();
-    if (linkAsk && !messages.length) introEl.appendChild(askCard());
     var groups = el("div", "rbchat-groups"); introEl.appendChild(groups);
     var promptLine = el("p", "rbchat-prompt-line", "› " + s.prompt + " ");
     // The block cursor waits here while the intro plays, and hands over to the command line.
     promptLine.appendChild(el("span", "rbchat-cur")); introEl.appendChild(promptLine);
+    if (linkAsk && !messages.length) introEl.appendChild(askCard());
     log.insertBefore(introEl, log.firstChild);
     if (!play || still()) finishIntro();
     facts(function(f){
@@ -1956,6 +1959,8 @@
         // A restored conversation has moved past the intro: its menus are spent, and the rows a
         // number picks stay those of the menu after the last answer.
         if (messages.length) spendIntro(); else { menuRows = rows.concat(picked).map(function(r){ return r[0]; }); keysLine(); }
+        // The menus are drawn above a waiting question and would push it out of sight.
+        if (askEl && askEl.parentNode === introEl) log.scrollTop = log.scrollHeight;
         if (!introEl.classList.contains("rbchat-still")) playIntro();
       });
     });
@@ -2080,7 +2085,13 @@
       for (var b = 0; b < labels.length; b++) labels[b].textContent = strings(answerLang(turns, langNow())).askNext;
     }
     // A language switch redraws the intro in the new language, finished, where the log holds one.
-    if (introEl && log) { var keep_ = log.scrollTop; introEl.parentNode && introEl.parentNode.removeChild(introEl); introEl = null; intro(false); log.scrollTop = keep_; }
+    // A waiting question is redrawn with it, and the button that held the focus holds it again:
+    // a page sets its language after the panel has opened, and Enter still has to send.
+    if (introEl && log) {
+      var keep_ = log.scrollTop, held = askEl && askEl.contains(document.activeElement) ? Array.prototype.indexOf.call(askEl.querySelectorAll("button"), document.activeElement) : -1;
+      introEl.parentNode && introEl.parentNode.removeChild(introEl); introEl = null; intro(false); log.scrollTop = keep_;
+      if (held >= 0 && askEl) askEl.querySelectorAll("button")[held].focus({ preventScroll: true });
+    }
     // The chips standing under an answer are drawn again from the titles they were picked as, so a
     // model question reads in the new language and a number key sends what its row now shows.
     if (qBox && qPicked && qPicked.length) { var was_ = qPicked.slice(); hideQuestions(); offer(was_); }
@@ -2111,7 +2122,7 @@
     // something to clear: an empty panel shows no control for emptying it. A conversation has no
     // length at which it must start over, so this is the only door; its reset takes the turns,
     // the log and the tab's copy together; the panel's size stays, being a choice
-    // about this tab's reading rather than part of the conversation.
+    // about how the visitor reads rather than part of the conversation.
     newBtn = el("button", "rbchat-new"); newBtn.type = "button"; newBtn.hidden = true;
     // The glyph is an arrow come back round, not a plus: a plus beside the cross read as "add",
     // and what the button does is start over. The note under it names the action for a pointer
@@ -2206,7 +2217,7 @@
     // Double-click gives the stylesheet's size back and forgets the stored one, as the stage's
     // gutter does: otherwise the only way back is to drag until it looks right again.
     grip.addEventListener("dblclick", function(){
-      try { sessionStorage.removeItem(SIZE_KEY); } catch (e) {}
+      try { localStorage.removeItem(SIZE_KEY); } catch (e) {}
       unsize();
     });
     grip.addEventListener("keydown", function(ev){
diff --git a/ideas/index.html b/ideas/index.html
index ac2ae6c..4319427 100644
--- a/ideas/index.html
+++ b/ideas/index.html
@@ -114,7 +114,7 @@
 }
 </script>
 <script>
-  /* ─── theme boot · v5 · page ────────────────────────────────────
+  /* ─── theme boot · v6 · page ────────────────────────────────────
      Set the theme before anything paints. Generated from @robertblust/design —
      editing it here does nothing, because the next `npm run design` overwrites it.
 
@@ -157,13 +157,14 @@
     try {
       if (window.top !== window && /[?&]embed(&|$)/.test(location.search)) document.documentElement.setAttribute("data-embed", "");
     } catch (e) {}
-    // A conversation the tab keeps open: the keys are chat.js's, `chat` and `chat-size`, read
-    // the way it reads them. Never in a frame, which takes no chat of its own.
+    // A conversation the tab keeps open: the keys are chat.js's, `chat` in the tab's storage and
+    // `chat-size` in the browser's, read the way it reads them. Never in a frame, which takes no
+    // chat of its own.
     try {
       var r = document.documentElement, c = JSON.parse(sessionStorage.getItem("chat") || "null");
       if (c && c.open && window.top === window) {
         r.setAttribute("data-chat-waiting", location.host);
-        var z = JSON.parse(sessionStorage.getItem("chat-size") || "null");
+        var z = JSON.parse(localStorage.getItem("chat-size") || "null");
         if (z && z.w && z.h) { r.style.setProperty("--rbchat-kept-w", z.w + "px"); r.style.setProperty("--rbchat-kept-h", z.h + "px"); }
       }
     } catch (e) {}
diff --git a/ideas/og.sha b/ideas/og.sha
index b23fd91..aeada1b 100644
--- a/ideas/og.sha
+++ b/ideas/og.sha
@@ -1 +1 @@
-b30dad0b99c88d8c2f85d54492fec35d4fe49b86823539cc1f38fa32f85a457d
+c453eaff43ce4168ffa28bb87db19fe0d41e591b8dbeb64cbe78eea14189e1b9
diff --git a/index.html b/index.html
index c7a50ed..8689287 100644
--- a/index.html
+++ b/index.html
@@ -91,7 +91,7 @@
 }
 </script>
 <script>
-  /* ─── theme boot · v5 · page ────────────────────────────────────
+  /* ─── theme boot · v6 · page ────────────────────────────────────
      Set the theme before anything paints. Generated from @robertblust/design —
      editing it here does nothing, because the next `npm run design` overwrites it.
 
@@ -134,13 +134,14 @@
     try {
       if (window.top !== window && /[?&]embed(&|$)/.test(location.search)) document.documentElement.setAttribute("data-embed", "");
     } catch (e) {}
-    // A conversation the tab keeps open: the keys are chat.js's, `chat` and `chat-size`, read
-    // the way it reads them. Never in a frame, which takes no chat of its own.
+    // A conversation the tab keeps open: the keys are chat.js's, `chat` in the tab's storage and
+    // `chat-size` in the browser's, read the way it reads them. Never in a frame, which takes no
+    // chat of its own.
     try {
       var r = document.documentElement, c = JSON.parse(sessionStorage.getItem("chat") || "null");
       if (c && c.open && window.top === window) {
         r.setAttribute("data-chat-waiting", location.host);
-        var z = JSON.parse(sessionStorage.getItem("chat-size") || "null");
+        var z = JSON.parse(localStorage.getItem("chat-size") || "null");
         if (z && z.w && z.h) { r.style.setProperty("--rbchat-kept-w", z.w + "px"); r.style.setProperty("--rbchat-kept-h", z.h + "px"); }
       }
     } catch (e) {}
diff --git a/model.json b/model.json
index 423cd05..18e298b 100644
--- a/model.json
+++ b/model.json
@@ -1,5 +1,5 @@
 {
-  "commit": "43dfa37bb4fa92ca6fe2a6a311b3f80c1d135158",
+  "commit": "de6fa1327af126b53af0c88de385592d8ba1b6a2",
   "core": "0.69.0",
   "root": "Robert Blust",
   "rootId": "01a04c85-bc20-7849-9ec1-d877215d70b4",
@@ -20070,8 +20070,9 @@
       "fields": {
         "id": "01a108dd-6751-7040-bd3c-4bb5ecf70bc6",
         "source": "Local",
-        "mechanism": "session-storage",
+        "mechanism": "local-storage",
         "necessity": "optional",
+        "duration": "Until the visitor clears it",
         "surfaces": [
           "chat.blust.ch chat"
         ]
diff --git a/model/index.html b/model/index.html
index 18dc5e9..babeb4b 100644
--- a/model/index.html
+++ b/model/index.html
@@ -111,7 +111,7 @@
 <!-- Publisher and page, nothing about the product. The same rule the other two pages
      follow: structured data is not a back door for claims the prose does not make. -->
 <script>
-  /* ─── theme boot · v5 · page ────────────────────────────────────
+  /* ─── theme boot · v6 · page ────────────────────────────────────
      Set the theme before anything paints. Generated from @robertblust/design —
      editing it here does nothing, because the next `npm run design` overwrites it.
 
@@ -154,13 +154,14 @@
     try {
       if (window.top !== window && /[?&]embed(&|$)/.test(location.search)) document.documentElement.setAttribute("data-embed", "");
     } catch (e) {}
-    // A conversation the tab keeps open: the keys are chat.js's, `chat` and `chat-size`, read
-    // the way it reads them. Never in a frame, which takes no chat of its own.
+    // A conversation the tab keeps open: the keys are chat.js's, `chat` in the tab's storage and
+    // `chat-size` in the browser's, read the way it reads them. Never in a frame, which takes no
+    // chat of its own.
     try {
       var r = document.documentElement, c = JSON.parse(sessionStorage.getItem("chat") || "null");
       if (c && c.open && window.top === window) {
         r.setAttribute("data-chat-waiting", location.host);
-        var z = JSON.parse(sessionStorage.getItem("chat-size") || "null");
+        var z = JSON.parse(localStorage.getItem("chat-size") || "null");
         if (z && z.w && z.h) { r.style.setProperty("--rbchat-kept-w", z.w + "px"); r.style.setProperty("--rbchat-kept-h", z.h + "px"); }
       }
     } catch (e) {}
diff --git a/model/og.sha b/model/og.sha
index 4bce8b8..61045ad 100644
--- a/model/og.sha
+++ b/model/og.sha
@@ -1 +1 @@
-707f659fa51df4fed37b442ae534a135cabacb3783a2da957793560f9ae4850c
+f5d058c57b8eaf551a82868e0f800b4f484bf1605c84eb216c34b46ba7f0292f
diff --git a/og.sha b/og.sha
index b68e9dd..9a57489 100644
--- a/og.sha
+++ b/og.sha
@@ -1 +1 @@
-aa62036005892c1af005b70c23a499fa6d079257639c3af520c3cd51951f0a40
+49b0520b27bf571c8eafd5d34fc33f6a0014f6e543df2de49437efdb31b82c0b
diff --git a/package-lock.json b/package-lock.json
index 974b133..04e167a 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -11,7 +11,7 @@
         "companygraph-meta-model": "github:companygraph/meta-model#v0.94.0"
       },
       "devDependencies": {
-        "@robertblust/design": "github:robertblust/design#v0.155.0",
+        "@robertblust/design": "github:robertblust/design#v0.156.0",
         "companygraph-mcp-server": "github:companygraph/mcp-server#v0.69.0",
         "pdf-lib": "^1.17.1",
         "playwright": "^1.63.0"
@@ -95,8 +95,8 @@
       }
     },
     "node_modules/@robertblust/design": {
-      "version": "0.155.0",
-      "resolved": "git+ssh://git@github.com/robertblust/design.git#6f4c29b1e307f3e982537ca2e132f8adb15bd895",
+      "version": "0.156.0",
+      "resolved": "git+ssh://git@github.com/robertblust/design.git#e9ae31386c3af4f16cd1f83faa0df5514ff56f6a",
       "dev": true,
       "license": "Apache-2.0",
       "bin": {
diff --git a/package.json b/package.json
index f613416..9bd061e 100644
--- a/package.json
+++ b/package.json
@@ -29,7 +29,7 @@
     "pin:check": "node pin-check.mjs"
   },
   "devDependencies": {
-    "@robertblust/design": "github:robertblust/design#v0.155.0",
+    "@robertblust/design": "github:robertblust/design#v0.156.0",
     "companygraph-mcp-server": "github:companygraph/mcp-server#v0.69.0",
     "pdf-lib": "^1.17.1",
     "playwright": "^1.63.0"
diff --git a/principles/index.html b/principles/index.html
index 60eca47..b5c2a9d 100644
--- a/principles/index.html
+++ b/principles/index.html
@@ -111,7 +111,7 @@
 <!-- Publisher and page, nothing about the product. The same rule the other two pages
      follow: structured data is not a back door for claims the prose does not make. -->
 <script>
-  /* ─── theme boot · v5 · page ────────────────────────────────────
+  /* ─── theme boot · v6 · page ────────────────────────────────────
      Set the theme before anything paints. Generated from @robertblust/design —
      editing it here does nothing, because the next `npm run design` overwrites it.
 
@@ -154,13 +154,14 @@
     try {
       if (window.top !== window && /[?&]embed(&|$)/.test(location.search)) document.documentElement.setAttribute("data-embed", "");
     } catch (e) {}
-    // A conversation the tab keeps open: the keys are chat.js's, `chat` and `chat-size`, read
-    // the way it reads them. Never in a frame, which takes no chat of its own.
+    // A conversation the tab keeps open: the keys are chat.js's, `chat` in the tab's storage and
+    // `chat-size` in the browser's, read the way it reads them. Never in a frame, which takes no
+    // chat of its own.
     try {
       var r = document.documentElement, c = JSON.parse(sessionStorage.getItem("chat") || "null");
       if (c && c.open && window.top === window) {
         r.setAttribute("data-chat-waiting", location.host);
-        var z = JSON.parse(sessionStorage.getItem("chat-size") || "null");
+        var z = JSON.parse(localStorage.getItem("chat-size") || "null");
         if (z && z.w && z.h) { r.style.setProperty("--rbchat-kept-w", z.w + "px"); r.style.setProperty("--rbchat-kept-h", z.h + "px"); }
       }
     } catch (e) {}
@@ -334,7 +335,7 @@ <h3 data-de="Die Produktion ist das Ziel">Production is the finish line</h3>
       </article>
     </section>
 
-    <p class="derived" data-de="Erzeugt aus <a href='https://github.com/robertblust/mental-model'>robertblust/mental-model</a>@43dfa37 – <code class='mono'>model/vision.md</code> und <code class='mono'>model/values/</code>. Dieses Repository ist eine Instanz von <a href='https://companygraph.io/'>CompanyGraph</a>, einem Meta-Modell, das ein Unternehmen als Graph aus Markdown beschreibt.">Generated from <a href="https://github.com/robertblust/mental-model">robertblust/mental-model</a>@43dfa37 — <code class="mono">model/vision.md</code> and <code class="mono">model/values/</code>. That repository is an instance of <a href="https://companygraph.io/">CompanyGraph</a>, a meta-model for describing a company as a graph of Markdown.</p>
+    <p class="derived" data-de="Erzeugt aus <a href='https://github.com/robertblust/mental-model'>robertblust/mental-model</a>@de6fa13 – <code class='mono'>model/vision.md</code> und <code class='mono'>model/values/</code>. Dieses Repository ist eine Instanz von <a href='https://companygraph.io/'>CompanyGraph</a>, einem Meta-Modell, das ein Unternehmen als Graph aus Markdown beschreibt.">Generated from <a href="https://github.com/robertblust/mental-model">robertblust/mental-model</a>@de6fa13 — <code class="mono">model/vision.md</code> and <code class="mono">model/values/</code>. That repository is an instance of <a href="https://companygraph.io/">CompanyGraph</a>, a meta-model for describing a company as a graph of Markdown.</p>
     <!-- principles:end -->
   </div>
 </main>
diff --git a/principles/og.sha b/principles/og.sha
index 0ad696e..dd361e8 100644
--- a/principles/og.sha
+++ b/principles/og.sha
@@ -1 +1 @@
-e79443fb34b1199b894cf7d7c73ee299c2e8b83ede682ab20382a046de6e2d57
+f45905b861b5f56bb3f0ac6491144203cc73a6e6b237d8c6dfafad7bfd84e0b1
diff --git a/privacy/index.html b/privacy/index.html
index 5130f5b..e60c0b8 100644
--- a/privacy/index.html
+++ b/privacy/index.html
@@ -111,7 +111,7 @@
 <!-- Publisher and page, nothing about the product. The same rule the other two pages
      follow: structured data is not a back door for claims the prose does not make. -->
 <script>
-  /* ─── theme boot · v5 · page ────────────────────────────────────
+  /* ─── theme boot · v6 · page ────────────────────────────────────
      Set the theme before anything paints. Generated from @robertblust/design —
      editing it here does nothing, because the next `npm run design` overwrites it.
 
@@ -154,13 +154,14 @@
     try {
       if (window.top !== window && /[?&]embed(&|$)/.test(location.search)) document.documentElement.setAttribute("data-embed", "");
     } catch (e) {}
-    // A conversation the tab keeps open: the keys are chat.js's, `chat` and `chat-size`, read
-    // the way it reads them. Never in a frame, which takes no chat of its own.
+    // A conversation the tab keeps open: the keys are chat.js's, `chat` in the tab's storage and
+    // `chat-size` in the browser's, read the way it reads them. Never in a frame, which takes no
+    // chat of its own.
     try {
       var r = document.documentElement, c = JSON.parse(sessionStorage.getItem("chat") || "null");
       if (c && c.open && window.top === window) {
         r.setAttribute("data-chat-waiting", location.host);
-        var z = JSON.parse(sessionStorage.getItem("chat-size") || "null");
+        var z = JSON.parse(localStorage.getItem("chat-size") || "null");
         if (z && z.w && z.h) { r.style.setProperty("--rbchat-kept-w", z.w + "px"); r.style.setProperty("--rbchat-kept-h", z.h + "px"); }
       }
     } catch (e) {}
@@ -332,11 +333,12 @@ <h2 data-de="Wohin Ihre Daten gehen">Where your data goes</h2>
       <!-- privacy:start -->
       <div class="lineage" id="lineage">
         <svg class="wires" id="wires" aria-hidden="true"></svg>
-        <div class="ln-model" id="lnmodel"><div class="lbl" data-de="Auf blust.ch">On blust.ch</div><div class="nm" data-de="Ihr Besuch">Your visit</div><div class="at mono">@43dfa37</div></div>
+        <div class="ln-model" id="lnmodel"><div class="lbl" data-de="Auf blust.ch">On blust.ch</div><div class="nm" data-de="Ihr Besuch">Your visit</div><div class="at mono">@de6fa13</div></div>
         <ul class="ln-groups">
           <li class="ln-group hand">
             <div class="ln-maker" data-maker="local-storage"><svg class="mk hand" aria-hidden="true"><use href="#m-hand"/></svg><span class="who"><span data-de="In Ihrem Browser gespeichert">Kept in your browser</span><span class="how" data-de="bis Sie die Daten löschen · nie automatisch übermittelt">until you clear it · never sent on its own</span></span></div>
             <ul class="ln-surfaces">
+              <li><button class="ln-s" type="button" id="key-chat-size" data-id="01a108dd-6751-7040-bd3c-4bb5ecf70bc6" data-maker="local-storage" aria-pressed="false" aria-controls="lnpanel"><span class="nm">chat-size</span><span class="host" data-de="Wie gross Sie das Chatfenster eingestellt haben, in Pixeln">How big the visitor made the chat panel, in pixels</span></button></li>
               <li><button class="ln-s" type="button" id="key-lang" data-id="01a108dd-0bb2-7a6b-a92b-8c6de9602908" data-maker="local-storage" aria-pressed="false" aria-controls="lnpanel"><span class="nm">lang</span><span class="host" data-de="Die Sprache, die Sie gewählt haben, `de` oder `en`, damit sich die nächste Seite in dieser Sprache öffnet">The language the visitor chose, `de` or `en`, so the next page opens in it</span></button></li>
               <li><button class="ln-s" type="button" id="key-stage-card" data-id="01a108dd-29bb-723d-9a2c-fe0910a7b464" data-maker="local-storage" aria-pressed="false" aria-controls="lnpanel"><span class="nm">stage-card</span><span class="host" data-de="Wie breit Sie den Detailbereich auf den Modellseiten eingestellt haben, in Pixeln">How wide the visitor left the details panel on the model pages, in pixels</span></button></li>
               <li><button class="ln-s" type="button" id="key-stage-card-modal" data-id="01a108dd-38e2-7844-ac0c-00ab3e326e58" data-maker="local-storage" aria-pressed="false" aria-controls="lnpanel"><span class="nm">stage-card-modal</span><span class="host" data-de="Wie breit Sie den Detailbereich in der vergrösserten Ansicht eingestellt haben, in Pixeln">How wide the visitor left the details panel in the expanded view, in pixels</span></button></li>
@@ -350,7 +352,6 @@ <h2 data-de="Wohin Ihre Daten gehen">Where your data goes</h2>
               <li><button class="ln-s" type="button" id="key-chat" data-id="01a108dd-57ad-70ae-b4ef-65a0a7e66708" data-maker="session-storage" aria-pressed="false" aria-controls="lnpanel"><span class="nm">chat</span><span class="host" data-de="Das Gespräch in diesem Tab, damit es nicht verloren geht, wenn Sie einem Link folgen">The conversation in this tab, so following a link does not lose it</span></button></li>
               <li><button class="ln-s" type="button" id="key-chat-facts" data-id="01a108dd-85a4-7a5b-8055-872abe683db8" data-maker="session-storage" aria-pressed="false" aria-controls="lnpanel"><span class="nm">chat-facts</span><span class="host" data-de="Was der Chat aus der Datei des Modells gelesen hat, um Fragen vorzuschlagen. So zeigt die nächste Seite diese Fragen sofort an">What the chat read from the model's file to offer its questions, so the next page draws them at once</span></button></li>
               <li><button class="ln-s" type="button" id="key-chat-pictures" data-id="01a108dd-7686-73f5-bffd-e044b4dde4f2" data-maker="session-storage" aria-pressed="false" aria-controls="lnpanel"><span class="nm">chat-pictures</span><span class="host" data-de="Die Diagramme, die der Chat in diesem Tab in seinen Antworten gezeichnet hat">The figures the chat drew in its answers in this tab</span></button></li>
-              <li><button class="ln-s" type="button" id="key-chat-size" data-id="01a108dd-6751-7040-bd3c-4bb5ecf70bc6" data-maker="session-storage" aria-pressed="false" aria-controls="lnpanel"><span class="nm">chat-size</span><span class="host" data-de="Wie gross Sie das Chatfenster eingestellt haben, in Pixeln">How big the visitor made the chat panel, in pixels</span></button></li>
             </ul>
           </li>
           <li class="ln-group">
diff --git a/privacy/og.sha b/privacy/og.sha
index 8386396..bafcb97 100644
--- a/privacy/og.sha
+++ b/privacy/og.sha
@@ -1 +1 @@
-c670123abdc99b960df5de7ad84f5d419995fbc030c2e8898567f894fd9f214f
+7fe64499c47835e939288df92bc1f361a7b5a82b1457756966280895300c5b4a
diff --git a/processes/index.html b/processes/index.html
index 2792fe8..688bf29 100644
--- a/processes/index.html
+++ b/processes/index.html
@@ -111,7 +111,7 @@
 <!-- Publisher and page, nothing about the product. The same rule the other two pages
      follow: structured data is not a back door for claims the prose does not make. -->
 <script>
-  /* ─── theme boot · v5 · page ────────────────────────────────────
+  /* ─── theme boot · v6 · page ────────────────────────────────────
      Set the theme before anything paints. Generated from @robertblust/design —
      editing it here does nothing, because the next `npm run design` overwrites it.
 
@@ -154,13 +154,14 @@
     try {
       if (window.top !== window && /[?&]embed(&|$)/.test(location.search)) document.documentElement.setAttribute("data-embed", "");
     } catch (e) {}
-    // A conversation the tab keeps open: the keys are chat.js's, `chat` and `chat-size`, read
-    // the way it reads them. Never in a frame, which takes no chat of its own.
+    // A conversation the tab keeps open: the keys are chat.js's, `chat` in the tab's storage and
+    // `chat-size` in the browser's, read the way it reads them. Never in a frame, which takes no
+    // chat of its own.
     try {
       var r = document.documentElement, c = JSON.parse(sessionStorage.getItem("chat") || "null");
       if (c && c.open && window.top === window) {
         r.setAttribute("data-chat-waiting", location.host);
-        var z = JSON.parse(sessionStorage.getItem("chat-size") || "null");
+        var z = JSON.parse(localStorage.getItem("chat-size") || "null");
         if (z && z.w && z.h) { r.style.setProperty("--rbchat-kept-w", z.w + "px"); r.style.setProperty("--rbchat-kept-h", z.h + "px"); }
       }
     } catch (e) {}
diff --git a/processes/og.sha b/processes/og.sha
index c9395dd..e644e88 100644
--- a/processes/og.sha
+++ b/processes/og.sha
@@ -1 +1 @@
-8a245cf534e368f22fa3b2a869810f07a614029a1174a43fa903080d94932f4b
+2221bcc0b19df3bb7b73174860ea24a8e7861b5b9dffe65abf28cb8d5189b4de
diff --git a/processes/pictures/answering.sha b/processes/pictures/answering.sha
index 0483f1a..013e484 100644
--- a/processes/pictures/answering.sha
+++ b/processes/pictures/answering.sha
@@ -1 +1 @@
-519eca92166807f07e15eb5d5fbbf4582a62459d88881c2fd88312b2423ee209
+0c1587a3775758e5b0626b341b7fa95f965cc537883680b46af27aeff7da2a1a
diff --git a/processes/pictures/deciding.sha b/processes/pictures/deciding.sha
index c477572..8c87915 100644
--- a/processes/pictures/deciding.sha
+++ b/processes/pictures/deciding.sha
@@ -1 +1 @@
-603c86b7b45be2b9637456c3986e9dd27254dda63f3b1756be2072929760d7cf
+409e060f268e4666a4c8387b461b036e90fc0f6497d2d0c1f3a80cf7986f385f
diff --git a/processes/pictures/delivery.sha b/processes/pictures/delivery.sha
index 074134e..86be062 100644
--- a/processes/pictures/delivery.sha
+++ b/processes/pictures/delivery.sha
@@ -1 +1 @@
-04f0a2a1a6649a0758bf64449d8f48c0a5b8c6487dfca869545f7eb05bd57128
+9094e5aa366fc0ef85623580f0122c966b5aaa131caae7d1e02e3a398f5b6d2c
diff --git a/processes/pictures/narrating.sha b/processes/pictures/narrating.sha
index 1fbdd55..ce1f0d9 100644
--- a/processes/pictures/narrating.sha
+++ b/processes/pictures/narrating.sha
@@ -1 +1 @@
-70e95eb3f2d5ca1bf17f29c46cfcb7230efd30aa0f089dbdbec03bd4432f323c
+2bc856258c3d6e62b4af12868805df3b254933dd4a2086f275d04b0932d9acea
diff --git a/sitemap.xml b/sitemap.xml
index 6a35262..df9c4cd 100644
--- a/sitemap.xml
+++ b/sitemap.xml
@@ -1,19 +1,19 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9">
-  <url><loc>https://blust.ch/</loc><lastmod>2026-10-08</lastmod><changefreq>monthly</changefreq><priority>1.0</priority></url>
-  <url><loc>https://blust.ch/talks/</loc><lastmod>2026-10-08</lastmod><changefreq>monthly</changefreq><priority>0.8</priority></url>
-  <url><loc>https://blust.ch/talks/mental-model/</loc><lastmod>2026-10-04</lastmod><changefreq>monthly</changefreq><priority>0.9</priority></url>
-  <url><loc>https://blust.ch/talks/essential-complexity/</loc><lastmod>2026-10-04</lastmod><changefreq>monthly</changefreq><priority>0.9</priority></url>
-  <url><loc>https://blust.ch/talks/deciding-well/</loc><lastmod>2026-10-08</lastmod><changefreq>monthly</changefreq><priority>0.9</priority></url>
-  <url><loc>https://blust.ch/talks/deciding-well/cost/</loc><lastmod>2026-10-08</lastmod><changefreq>monthly</changefreq><priority>0.7</priority></url>
-  <url><loc>https://blust.ch/blog/</loc><lastmod>2026-10-08</lastmod><changefreq>monthly</changefreq><priority>0.8</priority></url>
-  <url><loc>https://blust.ch/blog/one-question-answered/</loc><lastmod>2026-10-08</lastmod><changefreq>monthly</changefreq><priority>0.9</priority></url>
-  <url><loc>https://blust.ch/blog/deciding-well-solved/</loc><lastmod>2026-10-08</lastmod><changefreq>monthly</changefreq><priority>0.9</priority></url>
-  <url><loc>https://blust.ch/principles/</loc><lastmod>2026-10-13</lastmod><changefreq>monthly</changefreq><priority>0.8</priority></url>
-  <url><loc>https://blust.ch/model/</loc><lastmod>2026-10-13</lastmod><changefreq>monthly</changefreq><priority>0.8</priority></url>
-  <url><loc>https://blust.ch/surfaces/</loc><lastmod>2026-10-13</lastmod><changefreq>monthly</changefreq><priority>0.8</priority></url>
-  <url><loc>https://blust.ch/processes/</loc><lastmod>2026-10-13</lastmod><changefreq>monthly</changefreq><priority>0.8</priority></url>
-  <url><loc>https://blust.ch/timeline/</loc><lastmod>2026-10-13</lastmod><changefreq>monthly</changefreq><priority>0.8</priority></url>
-  <url><loc>https://blust.ch/privacy/</loc><lastmod>2026-10-13</lastmod></url>
-  <url><loc>https://blust.ch/ideas/</loc><lastmod>2026-10-11</lastmod></url>
+  <url><loc>https://blust.ch/</loc><lastmod>2026-10-14</lastmod><changefreq>monthly</changefreq><priority>1.0</priority></url>
+  <url><loc>https://blust.ch/talks/</loc><lastmod>2026-10-14</lastmod><changefreq>monthly</changefreq><priority>0.8</priority></url>
+  <url><loc>https://blust.ch/talks/mental-model/</loc><lastmod>2026-10-14</lastmod><changefreq>monthly</changefreq><priority>0.9</priority></url>
+  <url><loc>https://blust.ch/talks/essential-complexity/</loc><lastmod>2026-10-14</lastmod><changefreq>monthly</changefreq><priority>0.9</priority></url>
+  <url><loc>https://blust.ch/talks/deciding-well/</loc><lastmod>2026-10-14</lastmod><changefreq>monthly</changefreq><priority>0.9</priority></url>
+  <url><loc>https://blust.ch/talks/deciding-well/cost/</loc><lastmod>2026-10-14</lastmod><changefreq>monthly</changefreq><priority>0.7</priority></url>
+  <url><loc>https://blust.ch/blog/</loc><lastmod>2026-10-14</lastmod><changefreq>monthly</changefreq><priority>0.8</priority></url>
+  <url><loc>https://blust.ch/blog/one-question-answered/</loc><lastmod>2026-10-14</lastmod><changefreq>monthly</changefreq><priority>0.9</priority></url>
+  <url><loc>https://blust.ch/blog/deciding-well-solved/</loc><lastmod>2026-10-14</lastmod><changefreq>monthly</changefreq><priority>0.9</priority></url>
+  <url><loc>https://blust.ch/principles/</loc><lastmod>2026-10-14</lastmod><changefreq>monthly</changefreq><priority>0.8</priority></url>
+  <url><loc>https://blust.ch/model/</loc><lastmod>2026-10-14</lastmod><changefreq>monthly</changefreq><priority>0.8</priority></url>
+  <url><loc>https://blust.ch/surfaces/</loc><lastmod>2026-10-14</lastmod><changefreq>monthly</changefreq><priority>0.8</priority></url>
+  <url><loc>https://blust.ch/processes/</loc><lastmod>2026-10-14</lastmod><changefreq>monthly</changefreq><priority>0.8</priority></url>
+  <url><loc>https://blust.ch/timeline/</loc><lastmod>2026-10-14</lastmod><changefreq>monthly</changefreq><priority>0.8</priority></url>
+  <url><loc>https://blust.ch/privacy/</loc><lastmod>2026-10-14</lastmod></url>
+  <url><loc>https://blust.ch/ideas/</loc><lastmod>2026-10-14</lastmod></url>
 </urlset>
diff --git a/source.json b/source.json
index bc8c76f..77d12b6 100644
--- a/source.json
+++ b/source.json
@@ -1 +1 @@
-{"repo":"robertblust/mental-model","commit":"43dfa37bb4fa92ca6fe2a6a311b3f80c1d135158"}
\ No newline at end of file
+{"repo":"robertblust/mental-model","commit":"de6fa1327af126b53af0c88de385592d8ba1b6a2"}
\ No newline at end of file
diff --git a/surfaces/index.html b/surfaces/index.html
index 49b9a29..207c791 100644
--- a/surfaces/index.html
+++ b/surfaces/index.html
@@ -111,7 +111,7 @@
 <!-- Publisher and page, nothing about the product. The same rule the other two pages
      follow: structured data is not a back door for claims the prose does not make. -->
 <script>
-  /* ─── theme boot · v5 · page ────────────────────────────────────
+  /* ─── theme boot · v6 · page ────────────────────────────────────
      Set the theme before anything paints. Generated from @robertblust/design —
      editing it here does nothing, because the next `npm run design` overwrites it.
 
@@ -154,13 +154,14 @@
     try {
       if (window.top !== window && /[?&]embed(&|$)/.test(location.search)) document.documentElement.setAttribute("data-embed", "");
     } catch (e) {}
-    // A conversation the tab keeps open: the keys are chat.js's, `chat` and `chat-size`, read
-    // the way it reads them. Never in a frame, which takes no chat of its own.
+    // A conversation the tab keeps open: the keys are chat.js's, `chat` in the tab's storage and
+    // `chat-size` in the browser's, read the way it reads them. Never in a frame, which takes no
+    // chat of its own.
     try {
       var r = document.documentElement, c = JSON.parse(sessionStorage.getItem("chat") || "null");
       if (c && c.open && window.top === window) {
         r.setAttribute("data-chat-waiting", location.host);
-        var z = JSON.parse(sessionStorage.getItem("chat-size") || "null");
+        var z = JSON.parse(localStorage.getItem("chat-size") || "null");
         if (z && z.w && z.h) { r.style.setProperty("--rbchat-kept-w", z.w + "px"); r.style.setProperty("--rbchat-kept-h", z.h + "px"); }
       }
     } catch (e) {}
@@ -348,7 +349,7 @@ <h1 data-de="<span class='r70'>Ein Modell,</span><span class='rcl'>jede <em>Surf
       <!-- surfaces:start -->
       <div class="lineage" id="lineage">
         <svg class="wires" id="wires" aria-hidden="true"></svg>
-        <div class="ln-model" id="lnmodel"><div class="lbl" data-de="Das Modell">The model</div><div class="nm">mental-model</div><div class="at mono">@43dfa37</div></div>
+        <div class="ln-model" id="lnmodel"><div class="lbl" data-de="Das Modell">The model</div><div class="nm">mental-model</div><div class="at mono">@de6fa13</div></div>
         <ul class="ln-groups">
           <li class="ln-group hand">
             <div class="ln-maker" data-maker="hand"><svg class="mk hand" aria-hidden="true"><use href="#m-hand"/></svg><span class="who"><span data-de="Der Owner">The owner</span><span class="how" data-de="von Hand">by hand</span></span></div>
diff --git a/surfaces/og.sha b/surfaces/og.sha
index 05034a1..73cd911 100644
--- a/surfaces/og.sha
+++ b/surfaces/og.sha
@@ -1 +1 @@
-97fc0c01f51470190bf67198d79489d6ad3641d1255c1965b8583fc623981ba2
+b592f2a14943bcebe661077b4f365787d797a668f19e444d5e5fb3ab5ba7fc36
diff --git a/talks/deciding-well/cost/index.html b/talks/deciding-well/cost/index.html
index 3ccef21..be1074f 100644
--- a/talks/deciding-well/cost/index.html
+++ b/talks/deciding-well/cost/index.html
@@ -123,7 +123,7 @@
 <!-- Publisher and page, nothing about the product. The same rule every page here follows:
      structured data is not a back door for claims the prose does not make. -->
 <script>
-  /* ─── theme boot · v5 · page ────────────────────────────────────
+  /* ─── theme boot · v6 · page ────────────────────────────────────
      Set the theme before anything paints. Generated from @robertblust/design —
      editing it here does nothing, because the next `npm run design` overwrites it.
 
@@ -166,13 +166,14 @@
     try {
       if (window.top !== window && /[?&]embed(&|$)/.test(location.search)) document.documentElement.setAttribute("data-embed", "");
     } catch (e) {}
-    // A conversation the tab keeps open: the keys are chat.js's, `chat` and `chat-size`, read
-    // the way it reads them. Never in a frame, which takes no chat of its own.
+    // A conversation the tab keeps open: the keys are chat.js's, `chat` in the tab's storage and
+    // `chat-size` in the browser's, read the way it reads them. Never in a frame, which takes no
+    // chat of its own.
     try {
       var r = document.documentElement, c = JSON.parse(sessionStorage.getItem("chat") || "null");
       if (c && c.open && window.top === window) {
         r.setAttribute("data-chat-waiting", location.host);
-        var z = JSON.parse(sessionStorage.getItem("chat-size") || "null");
+        var z = JSON.parse(localStorage.getItem("chat-size") || "null");
         if (z && z.w && z.h) { r.style.setProperty("--rbchat-kept-w", z.w + "px"); r.style.setProperty("--rbchat-kept-h", z.h + "px"); }
       }
     } catch (e) {}
diff --git a/talks/deciding-well/cost/og.sha b/talks/deciding-well/cost/og.sha
index a48e472..f195bad 100644
--- a/talks/deciding-well/cost/og.sha
+++ b/talks/deciding-well/cost/og.sha
@@ -1 +1 @@
-1ec8af61a4ccfaed4252a64fc8068deebc42536cfb73e05c87621278f3727a56
+3b333865ff23a1a27ef5efa792624358fa0ab9c0638c5f215f6de31c8d962b5c
diff --git a/talks/deciding-well/index.html b/talks/deciding-well/index.html
index f0fff8e..af02275 100644
--- a/talks/deciding-well/index.html
+++ b/talks/deciding-well/index.html
@@ -127,7 +127,7 @@
 </script>
 <meta name="author" content="Robert Blust">
 <script>
-  /* ─── theme boot · v5 · deck ────────────────────────────────────
+  /* ─── theme boot · v6 · deck ────────────────────────────────────
      Set the theme before anything paints. Generated from @robertblust/design —
      editing it here does nothing, because the next `npm run design` overwrites it.
 
@@ -170,13 +170,14 @@
     try {
       if (window.top !== window && /[?&]embed(&|$)/.test(location.search)) document.documentElement.setAttribute("data-embed", "");
     } catch (e) {}
-    // A conversation the tab keeps open: the keys are chat.js's, `chat` and `chat-size`, read
-    // the way it reads them. Never in a frame, which takes no chat of its own.
+    // A conversation the tab keeps open: the keys are chat.js's, `chat` in the tab's storage and
+    // `chat-size` in the browser's, read the way it reads them. Never in a frame, which takes no
+    // chat of its own.
     try {
       var r = document.documentElement, c = JSON.parse(sessionStorage.getItem("chat") || "null");
       if (c && c.open && window.top === window) {
         r.setAttribute("data-chat-waiting", location.host);
-        var z = JSON.parse(sessionStorage.getItem("chat-size") || "null");
+        var z = JSON.parse(localStorage.getItem("chat-size") || "null");
         if (z && z.w && z.h) { r.style.setProperty("--rbchat-kept-w", z.w + "px"); r.style.setProperty("--rbchat-kept-h", z.h + "px"); }
       }
     } catch (e) {}
diff --git a/talks/deciding-well/og.sha b/talks/deciding-well/og.sha
index 4d7d3b9..c788e67 100644
--- a/talks/deciding-well/og.sha
+++ b/talks/deciding-well/og.sha
@@ -1 +1 @@
-ffd46848ee90e20c6f2c25f0afaa69a7fc3d36ccc582fc1479016431c2de35ec
+05996824a33517ccdc77d13b535262f3e5f7f50eccfc99f733b7adb5d265bc38
diff --git a/talks/essential-complexity/index.html b/talks/essential-complexity/index.html
index a692b16..b41a058 100644
--- a/talks/essential-complexity/index.html
+++ b/talks/essential-complexity/index.html
@@ -127,7 +127,7 @@
 </script>
 <meta name="author" content="Robert Blust">
 <script>
-  /* ─── theme boot · v5 · deck ────────────────────────────────────
+  /* ─── theme boot · v6 · deck ────────────────────────────────────
      Set the theme before anything paints. Generated from @robertblust/design —
      editing it here does nothing, because the next `npm run design` overwrites it.
 
@@ -170,13 +170,14 @@
     try {
       if (window.top !== window && /[?&]embed(&|$)/.test(location.search)) document.documentElement.setAttribute("data-embed", "");
     } catch (e) {}
-    // A conversation the tab keeps open: the keys are chat.js's, `chat` and `chat-size`, read
-    // the way it reads them. Never in a frame, which takes no chat of its own.
+    // A conversation the tab keeps open: the keys are chat.js's, `chat` in the tab's storage and
+    // `chat-size` in the browser's, read the way it reads them. Never in a frame, which takes no
+    // chat of its own.
     try {
       var r = document.documentElement, c = JSON.parse(sessionStorage.getItem("chat") || "null");
       if (c && c.open && window.top === window) {
         r.setAttribute("data-chat-waiting", location.host);
-        var z = JSON.parse(sessionStorage.getItem("chat-size") || "null");
+        var z = JSON.parse(localStorage.getItem("chat-size") || "null");
         if (z && z.w && z.h) { r.style.setProperty("--rbchat-kept-w", z.w + "px"); r.style.setProperty("--rbchat-kept-h", z.h + "px"); }
       }
     } catch (e) {}
diff --git a/talks/essential-complexity/og.sha b/talks/essential-complexity/og.sha
index 4379737..2877c6f 100644
--- a/talks/essential-complexity/og.sha
+++ b/talks/essential-complexity/og.sha
@@ -1 +1 @@
-23f835159ad0855ff2c547d7c4c471c9e73d3566400c8a5812c902cfde2e317d
+3650df75991d160a1d0d12f98849d84f62c269c81157f7b97b11724efe47335a
diff --git a/talks/index.html b/talks/index.html
index c8dc763..a61eeeb 100644
--- a/talks/index.html
+++ b/talks/index.html
@@ -112,7 +112,7 @@
 }
 </script>
 <script>
-  /* ─── theme boot · v5 · page ────────────────────────────────────
+  /* ─── theme boot · v6 · page ────────────────────────────────────
      Set the theme before anything paints. Generated from @robertblust/design —
      editing it here does nothing, because the next `npm run design` overwrites it.
 
@@ -155,13 +155,14 @@
     try {
       if (window.top !== window && /[?&]embed(&|$)/.test(location.search)) document.documentElement.setAttribute("data-embed", "");
     } catch (e) {}
-    // A conversation the tab keeps open: the keys are chat.js's, `chat` and `chat-size`, read
-    // the way it reads them. Never in a frame, which takes no chat of its own.
+    // A conversation the tab keeps open: the keys are chat.js's, `chat` in the tab's storage and
+    // `chat-size` in the browser's, read the way it reads them. Never in a frame, which takes no
+    // chat of its own.
     try {
       var r = document.documentElement, c = JSON.parse(sessionStorage.getItem("chat") || "null");
       if (c && c.open && window.top === window) {
         r.setAttribute("data-chat-waiting", location.host);
-        var z = JSON.parse(sessionStorage.getItem("chat-size") || "null");
+        var z = JSON.parse(localStorage.getItem("chat-size") || "null");
         if (z && z.w && z.h) { r.style.setProperty("--rbchat-kept-w", z.w + "px"); r.style.setProperty("--rbchat-kept-h", z.h + "px"); }
       }
     } catch (e) {}
diff --git a/talks/mental-model/index.html b/talks/mental-model/index.html
index 493c740..9c33885 100644
--- a/talks/mental-model/index.html
+++ b/talks/mental-model/index.html
@@ -127,7 +127,7 @@
 </script>
 <meta name="author" content="Robert Blust">
 <script>
-  /* ─── theme boot · v5 · deck ────────────────────────────────────
+  /* ─── theme boot · v6 · deck ────────────────────────────────────
      Set the theme before anything paints. Generated from @robertblust/design —
      editing it here does nothing, because the next `npm run design` overwrites it.
 
@@ -170,13 +170,14 @@
     try {
       if (window.top !== window && /[?&]embed(&|$)/.test(location.search)) document.documentElement.setAttribute("data-embed", "");
     } catch (e) {}
-    // A conversation the tab keeps open: the keys are chat.js's, `chat` and `chat-size`, read
-    // the way it reads them. Never in a frame, which takes no chat of its own.
+    // A conversation the tab keeps open: the keys are chat.js's, `chat` in the tab's storage and
+    // `chat-size` in the browser's, read the way it reads them. Never in a frame, which takes no
+    // chat of its own.
     try {
       var r = document.documentElement, c = JSON.parse(sessionStorage.getItem("chat") || "null");
       if (c && c.open && window.top === window) {
         r.setAttribute("data-chat-waiting", location.host);
-        var z = JSON.parse(sessionStorage.getItem("chat-size") || "null");
+        var z = JSON.parse(localStorage.getItem("chat-size") || "null");
         if (z && z.w && z.h) { r.style.setProperty("--rbchat-kept-w", z.w + "px"); r.style.setProperty("--rbchat-kept-h", z.h + "px"); }
       }
     } catch (e) {}
diff --git a/talks/mental-model/og.sha b/talks/mental-model/og.sha
index 9688ce4..0cbe92a 100644
--- a/talks/mental-model/og.sha
+++ b/talks/mental-model/og.sha
@@ -1 +1 @@
-0f49afdad21bb3da605526efaf980cf31fb8c33f5f895282024dd2aab96a4fcf
+381954a913af45d6bab25c2d59673790b1bf333516f9e4c5f56f6f1fdabad683
diff --git a/talks/og.sha b/talks/og.sha
index e23457c..299da8c 100644
--- a/talks/og.sha
+++ b/talks/og.sha
@@ -1 +1 @@
-410038a971109d33b8cd3a349f129234c2c090802239234250ba2609607a3a85
+d2c70077e7dd93d993eadb5488dca245d73cbebb24948da33adb8aad0f663b84
diff --git a/timeline/index.html b/timeline/index.html
index 4c4eda9..6c17164 100644
--- a/timeline/index.html
+++ b/timeline/index.html
@@ -111,7 +111,7 @@
 <!-- Publisher and page, nothing about the product. The same rule the other two pages
      follow: structured data is not a back door for claims the prose does not make. -->
 <script>
-  /* ─── theme boot · v5 · page ────────────────────────────────────
+  /* ─── theme boot · v6 · page ────────────────────────────────────
      Set the theme before anything paints. Generated from @robertblust/design —
      editing it here does nothing, because the next `npm run design` overwrites it.
 
@@ -154,13 +154,14 @@
     try {
       if (window.top !== window && /[?&]embed(&|$)/.test(location.search)) document.documentElement.setAttribute("data-embed", "");
     } catch (e) {}
-    // A conversation the tab keeps open: the keys are chat.js's, `chat` and `chat-size`, read
-    // the way it reads them. Never in a frame, which takes no chat of its own.
+    // A conversation the tab keeps open: the keys are chat.js's, `chat` in the tab's storage and
+    // `chat-size` in the browser's, read the way it reads them. Never in a frame, which takes no
+    // chat of its own.
     try {
       var r = document.documentElement, c = JSON.parse(sessionStorage.getItem("chat") || "null");
       if (c && c.open && window.top === window) {
         r.setAttribute("data-chat-waiting", location.host);
-        var z = JSON.parse(sessionStorage.getItem("chat-size") || "null");
+        var z = JSON.parse(localStorage.getItem("chat-size") || "null");
         if (z && z.w && z.h) { r.style.setProperty("--rbchat-kept-w", z.w + "px"); r.style.setProperty("--rbchat-kept-h", z.h + "px"); }
       }
     } catch (e) {}
diff --git a/timeline/og.sha b/timeline/og.sha
index b0ff787..81879bd 100644
--- a/timeline/og.sha
+++ b/timeline/og.sha
@@ -1 +1 @@
-7f3929012a8a27fcb9a2ed77a8a4167b3c0cc1691c09ece224c701dcbafd65c7
+fe462654c1b661965ce15d6cc1e97e1f0ed1c4c8635c24cfb80fd399be8f2f32