diff --git a/blog/deciding-well-solved/og.sha b/blog/deciding-well-solved/og.sha
index 27b871f..10537fd 100644
--- a/blog/deciding-well-solved/og.sha
+++ b/blog/deciding-well-solved/og.sha
@@ -1 +1 @@
-e8362db27ef1c74db498925aef127fcff24975a38a055f3597c5860317432d6f
+fd33eff778150dc9761c06686c8724f3a410d2d92c31773199bf296e7a978280
diff --git a/blog/og.sha b/blog/og.sha
index 100ac14..74654db 100644
--- a/blog/og.sha
+++ b/blog/og.sha
@@ -1 +1 @@
-486f812b0edf7b0f3c981eb4dd4709b4218e795cd21d935b6258a3b5803cff50
+0c6e7f492bbc825a28152adc82ecaa38db04c4783d8ceff19764d4da82f8a08b
diff --git a/blog/one-question-answered/og.sha b/blog/one-question-answered/og.sha
index 971976f..af50050 100644
--- a/blog/one-question-answered/og.sha
+++ b/blog/one-question-answered/og.sha
@@ -1 +1 @@
-ed3017add7c3343c626aec13efc4a9d43a13a11a8a850207f35b9732ea2b3070
+0685827113872e73e353e63f4760d642c5453e7536aaa751598c87f69767a264
diff --git a/chat.js b/chat.js
index 2ff7483..fb9887a 100644
--- a/chat.js
+++ b/chat.js
@@ -106,7 +106,9 @@
 // root with a code; wherever the widget then runs, it checks the state, exchanges the code and
 // returns to that path. The access token and the ID token are kept in the browser under
 // `chat-signin`, every message after carries the access token as `Authorization: Bearer`, and
-// `/logout` forgets both and ends the session at the service. A tag without `data-issuer` offers
+// `/logout` forgets both and ends the session at the service. A token that has lapsed, or that
+// the host no longer takes, is forgotten too, and the message goes as a visitor's, which Sonnet 5
+// answers, under a line that says so. A tag without `data-issuer` offers
 // none of the four words, `/login`, `/logout`, `/model` and `/effort`, and sends them as it
 // sends any question.
 //
@@ -150,6 +152,7 @@
       keys: { send: "enter send", last: "↑ last question", pick: "{range} pick", help: "/help", chosen: "{model} · {effort}" },
       menu: { model: "Choose a model", effort: "Choose an effort" },
       signInHint: "Sign in with /login to choose a model.",
+      lapsedHint: "Your sign-in has expired, so {model} answers now. Sign in again with /login to choose a model.",
       effortHint: "The effort can be chosen once your sign-in grants a model.",
       help: [["/new", "start a new conversation (also /clear)"], ["/login", "sign in, to choose a model"], ["/logout", "sign out"], ["/model", "choose the model that answers"], ["/effort", "choose how long it thinks"], ["/help", "this list"], ["{range}", "pick from the menu above"], ["↑", "your last question back into the line"]],
       tryLabel: "Try", askNext: "Ask next",
@@ -212,6 +215,7 @@
       keys: { send: "Enter senden", last: "↑ letzte Frage", pick: "{range} wählen", help: "/help", chosen: "{model} · {effort}" },
       menu: { model: "Modell wählen", effort: "Aufwand wählen" },
       signInHint: "Melde dich mit /login an, um ein Modell zu wählen.",
+      lapsedHint: "Deine Anmeldung ist abgelaufen, darum antwortet jetzt {model}. Melde dich mit /login wieder an, um ein Modell zu wählen.",
       effortHint: "Den Aufwand kannst du wählen, sobald deine Anmeldung ein Modell erlaubt.",
       help: [["/new", "ein neues Gespräch beginnen (auch /clear)"], ["/login", "anmelden, um ein Modell zu wählen"], ["/logout", "abmelden"], ["/model", "das antwortende Modell wählen"], ["/effort", "wählen, wie lange es nachdenkt"], ["/help", "diese Liste"], ["{range}", "aus dem Menü darüber wählen"], ["↑", "deine letzte Frage zurück in die Zeile"]],
       tryLabel: "Probier mal", askNext: "Frag weiter",
@@ -2436,6 +2440,9 @@
     catch (e) { return null; }
   }
   function forget(){ try { localStorage.removeItem(SIGNIN_KEY); } catch (e) {} keysLine(); }
+  // A sign-in that no longer holds, lapsed here or refused by the host: it is forgotten, and a
+  // line says the conversation goes on with Sonnet 5, the model every visitor gets.
+  function fallBack(){ forget(); hint(strings(langNow()).lapsedHint.replace("{model}", CHAT_MODELS[0].label)); }
   // The reader's name, from the ID token: `name`, else `preferred_username`.
   function readerName(){
     var s = signedIn(), c = s && claimsOf(s.id);
@@ -2635,10 +2642,10 @@
     // A number that picks a row of the model or effort menu is the choice, and nothing is sent.
     if (menuChoice && menuChoice.rows === menuRows && text !== typed) { input.value = ""; menuChoice.pick(menuChoice.values[menuRows.indexOf(text)]); return; }
     if (text.length > LIMIT) { refuse("too_long"); return; }
-    // A sign-in whose access token has lapsed is not sent, nor sent without it: the reader is
-    // asked to sign in again, and the question stays in the line and the conversation as it was.
+    // A sign-in whose access token has lapsed is forgotten rather than sent: the reader is told
+    // so in a line, and the question goes as a visitor's, which Sonnet 5 answers.
     var token = signedIn();
-    if (token && lapsed(token.access, Date.now())) { refuse("signed_out"); return; }
+    if (token && lapsed(token.access, Date.now())) { fallBack(); token = null; }
     // The model and effort it goes with, a visitor's none; above `low` to the host's own address
     // where the tag names one, and given the time a long answer takes.
     var choice = token ? chosen(true) : null, high = !!choice && choice.effort !== CHAT_EFFORTS[0];
@@ -2742,9 +2749,13 @@
               if (ans.parentNode) ans.parentNode.removeChild(ans);
               unsend();
               busy = false; input.disabled = false;
-              // The server no longer takes the token: it is forgotten, and the next message goes
-              // as a visitor's until the reader signs in again.
-              if (got.code === "signed_out") forget();
+              // The server no longer takes the token: it is forgotten, the reader is told so, and
+              // the question goes again at once as a visitor's, its first bubble gone with it.
+              if (got.code === "signed_out") {
+                if (mine.parentNode) mine.parentNode.removeChild(mine);
+                fallBack(); input.value = text; send();
+                return;
+              }
               // A model the sign-in does not grant: the question goes back into the line, to be
               // sent again once another is chosen.
               if (got.code === "not_granted" && !input.value) input.value = text;
diff --git a/ideas/og.sha b/ideas/og.sha
index a194706..0b8a01d 100644
--- a/ideas/og.sha
+++ b/ideas/og.sha
@@ -1 +1 @@
-b1565dd894b95c67eae09b7bd1ceda99a38bee92f051388b00aec5a488114d2e
+357038d5824bab66c7797dd7ac911b08c479fa86551478b25c4dc1213d0aeddb
diff --git a/model/og.sha b/model/og.sha
index ba3b69b..f5db0d5 100644
--- a/model/og.sha
+++ b/model/og.sha
@@ -1 +1 @@
-4093a766b716adfd0636ff27a7a864232e83646eee091e4e8bcea0490a1ceb1e
+356825da4cf63dca5d70cf5c406ce6f1b794f3c84d2d0fc15ad3b3c9e9c9f7f0
diff --git a/og.sha b/og.sha
index 1c9eccb..786273b 100644
--- a/og.sha
+++ b/og.sha
@@ -1 +1 @@
-434162c4fca70b6d72e9374401801e625c188438fb381db2b80b354ac35ff549
+9e465cdc89df7f5033bb803b9bc9e7a054cc9f4e450b577331d0d6f143aae3ab
diff --git a/package-lock.json b/package-lock.json
index d2a4a10..230fc83 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#v0.158.2",
+        "@robertblust/design": "github:robertblust/design#v0.159.0",
         "companygraph-mcp-server": "github:companygraph/mcp-server#v0.69.0",
         "pdf-lib": "^1.17.1",
         "playwright": "^1.64.1"
@@ -95,8 +95,8 @@
       }
     },
     "node_modules/@robertblust/design": {
-      "version": "0.158.2",
-      "resolved": "git+ssh://git@github.com/robertblust/design.git#5a3e8bcedbdaaa1d793bfc04577b564711ae417a",
+      "version": "0.159.0",
+      "resolved": "git+ssh://git@github.com/robertblust/design.git#017a6f23ceb5fc5200aabedc3d24ebecdd7d6418",
       "dev": true,
       "license": "Apache-2.0",
       "bin": {
diff --git a/package.json b/package.json
index 738eeec..c0b1f61 100644
--- a/package.json
+++ b/package.json
@@ -29,7 +29,7 @@
     "pin:check": "node pin-check.mjs"
   },
   "devDependencies": {
-    "@robertblust/design": "github:robertblust/design#v0.158.2",
+    "@robertblust/design": "github:robertblust/design#v0.159.0",
     "companygraph-mcp-server": "github:companygraph/mcp-server#v0.69.0",
     "pdf-lib": "^1.17.1",
     "playwright": "^1.64.1"
diff --git a/principles/og.sha b/principles/og.sha
index 032ee73..d5d8285 100644
--- a/principles/og.sha
+++ b/principles/og.sha
@@ -1 +1 @@
-538a4919d09f1b37005ecd8a071de166311929cc4f9c14297ae675c70cc83a66
+1e2f392d822319162a4f61c3886f46785b260a5edb175c85644cc6f1c9b85859
diff --git a/privacy/og.sha b/privacy/og.sha
index 1b9187a..11a948c 100644
--- a/privacy/og.sha
+++ b/privacy/og.sha
@@ -1 +1 @@
-471b6c68ed2abe748c60f825ea56f0738c7d1ef8a1b5975efaddfcf2b48ca306
+20b3bb27554ad772d23d790a1e656dbe1b20adaea52dd489863167514f1b5a9b
diff --git a/processes/og.sha b/processes/og.sha
index 651d8ce..fac830c 100644
--- a/processes/og.sha
+++ b/processes/og.sha
@@ -1 +1 @@
-f8a8745cbff637f6dc77b873da4f46a2bd1b8de7f52b863f5755a552ae6b2e92
+7d8601f806d4fba20e43306cb610500f4bdb80b3f27cb7215a599bb22068d85c
diff --git a/processes/pictures/answering.sha b/processes/pictures/answering.sha
index cf6c62d..62af499 100644
--- a/processes/pictures/answering.sha
+++ b/processes/pictures/answering.sha
@@ -1 +1 @@
-8e17666c4f962768365ebbaf96b043ca18cb5cda615956e58d2ccf92b85e29c8
+610f6047458f5666d89656f0b4825a9a46b7d63a44059764cbd3495df41214b5
diff --git a/processes/pictures/deciding.sha b/processes/pictures/deciding.sha
index cb9e162..efae957 100644
--- a/processes/pictures/deciding.sha
+++ b/processes/pictures/deciding.sha
@@ -1 +1 @@
-f082b9822bc98b32c85a24b80b1abf8192e79964966836b3b03b116dd6876279
+ea88132bfcfa25ccaf4729eaf232c7f86cbf82c31b63f04017e9153b8b384e38
diff --git a/processes/pictures/delivery.sha b/processes/pictures/delivery.sha
index c364c87..d96d494 100644
--- a/processes/pictures/delivery.sha
+++ b/processes/pictures/delivery.sha
@@ -1 +1 @@
-029de1830614f38a16f00e9ce52a8876f39836588a52bbbf3013179e0e1afe95
+5f49f4463780bbd940150c920fe58fc935ed47302af5626b37c0eba02ebcd828
diff --git a/processes/pictures/narrating.sha b/processes/pictures/narrating.sha
index 8173a1f..b64ca2e 100644
--- a/processes/pictures/narrating.sha
+++ b/processes/pictures/narrating.sha
@@ -1 +1 @@
-b7e0988567cb173727627435c994b28896c9d4c95939b439382f30ce946ed7e3
+1b6f46e68be95db285db4c7d00a9dbc160259c6f75d7456d21a213c0db7e650b
diff --git a/surfaces/og.sha b/surfaces/og.sha
index e075973..708fd38 100644
--- a/surfaces/og.sha
+++ b/surfaces/og.sha
@@ -1 +1 @@
-01d3d7e3b8c6fd4ad085e12b7bae97c2c6eaa6af0806b4106c059b8580ce12a6
+c88d00c0eca40199036c7da1fde41b2b6d26c6696dba7d19c3443099d71d3df7
diff --git a/talks/deciding-well/cost/og.sha b/talks/deciding-well/cost/og.sha
index 7e25b12..72398bf 100644
--- a/talks/deciding-well/cost/og.sha
+++ b/talks/deciding-well/cost/og.sha
@@ -1 +1 @@
-41196ec7d5528987e7ca37f4b1677d866bd304344486e4bd32be1fdfe314a9c5
+9c54e6176b0d8ed14427aa52a74e26cbf520b5d6c76a6a5a0b582b49e42faec5
diff --git a/talks/deciding-well/og.sha b/talks/deciding-well/og.sha
index aae60b8..6f2544d 100644
--- a/talks/deciding-well/og.sha
+++ b/talks/deciding-well/og.sha
@@ -1 +1 @@
-78c6d37125e90157986d31b509cb07477df5ae29f35ed35e843220aa589ffc44
+4b191eb1d05cf138d50d77adfe902f4a748affce2d34165aa95e1637a693160e
diff --git a/talks/essential-complexity/og.sha b/talks/essential-complexity/og.sha
index 62f5686..208a559 100644
--- a/talks/essential-complexity/og.sha
+++ b/talks/essential-complexity/og.sha
@@ -1 +1 @@
-2ca758a02320e72f0384e5e39e120f6a2f7d333d304b3312e017bdc932ab6979
+79ebef26252b28f0d681260f2dfeb736c71a6b55c813d63b69aa823bade18dd8
diff --git a/talks/mental-model/og.sha b/talks/mental-model/og.sha
index 2139976..31fa361 100644
--- a/talks/mental-model/og.sha
+++ b/talks/mental-model/og.sha
@@ -1 +1 @@
-c5c0be93b8404235133c6b86a5b2c2a813f7a45e46f15311ba4458644108119e
+a8fca3758f3e383dbb29568baf20361917fe1c1693b9264e9a2dacc32fa4b23c
diff --git a/talks/og.sha b/talks/og.sha
index dbb0ca1..870f548 100644
--- a/talks/og.sha
+++ b/talks/og.sha
@@ -1 +1 @@
-43e125a2cc0ae977351dfc53da248ad8175a60fe44fc98cce9412b0e1855476d
+a851c464e729c6ae8dee4d6dad2127a13e360e55064d20c12190d3106990a488
diff --git a/timeline/og.sha b/timeline/og.sha
index c30ef03..8d04f1c 100644
--- a/timeline/og.sha
+++ b/timeline/og.sha
@@ -1 +1 @@
-db3dd1fc016584be02c02034f1cdd5b0e6ca963d92681f61626365c348fe5b00
+872230cd0fe4dc13393ab1b596982f85247da606c8f68f11eb1f7e334ea10729