diff --git a/packages/client/ui-conversation/README.i18n.yaml b/packages/client/ui-conversation/README.i18n.yaml
index 7d9bf9f3c1..ed29dd1421 100644
--- a/packages/client/ui-conversation/README.i18n.yaml
+++ b/packages/client/ui-conversation/README.i18n.yaml
@@ -21,8 +21,8 @@
   en: 7871f9fe6bcc4459
   zh: 0d51565c600b3958
 /deepseek-ai-dsh-client-ui-conversation/shell-and-standard-props:
-  en: e910ac7fec4fd72d
-  zh: 741a399436dc98d9
+  en: 63ad16e66a02a67f
+  zh: d035a62bacbc1bdf
 /deepseek-ai-dsh-client-ui-conversation/temporary-composer-entries:
   en: bb1244310f5c0382
   zh: 824b84077432b559
diff --git a/packages/extensions/cordis-client-runner/src/client/slot-catalog.ts b/packages/extensions/cordis-client-runner/src/client/slot-catalog.ts
index d1b8158fb4..b21602ca07 100644
--- a/packages/extensions/cordis-client-runner/src/client/slot-catalog.ts
+++ b/packages/extensions/cordis-client-runner/src/client/slot-catalog.ts
@@ -1676,8 +1676,8 @@ export const CLIENT_SLOT_API: readonly ClientSlotEntry[] = [
     key: 'conversation.session.header.actions',
     kind: 'list',
     scope: 'session',
-    summary: 'Title-adjacent Session actions in ascending order.',
-    doc: 'Title-adjacent Session actions in ascending order.',
+    summary: 'Title-adjacent Session actions in ascending order; overflow is clipped and faded before the utilities, so overlays must portal.',
+    doc: 'Title-adjacent Session actions in ascending order; overflow is clipped and faded before the utilities, so overlays must portal.',
     registerOptions: [
       {
         name: 'id',
@@ -1782,8 +1782,8 @@ export const CLIENT_SLOT_API: readonly ClientSlotEntry[] = [
     key: 'conversation.session.header.lineage',
     kind: 'single',
     scope: 'session',
-    summary: 'Optional replacement for one Session breadcrumb title.',
-    doc: 'Optional replacement for one Session breadcrumb title.',
+    summary: 'Optional replacement for one Session breadcrumb title; overlays must portal because the title area clips overflow.',
+    doc: 'Optional replacement for one Session breadcrumb title; overlays must portal because the title area clips overflow.',
     registerOptions: [],
     ownerProps: [
       '/** Plain breadcrumb data handed to the optional lineage renderer. */\nexport interface ConversationHeaderLineageOwnerProps {\n  /** Session represented by this breadcrumb title. */\n  lineageSessionId: SessionId\n  /** Display title available to a combined title/control renderer. */\n  displayTitle: string\n  /** Navigate to an ancestor title when present. */\n  openTitle?: () => void\n}',