diff --git a/packages/ui/client/src/components/IdMenu.vue b/packages/ui/client/src/components/IdMenu.vue
index df10a4b..c96df50 100644
--- a/packages/ui/client/src/components/IdMenu.vue
+++ b/packages/ui/client/src/components/IdMenu.vue
@@ -1,6 +1,6 @@
 <script setup lang="ts">
 import { useClipboard, useTimeoutFn } from '@vueuse/core'
-import { DropdownMenuContent, DropdownMenuItem, DropdownMenuLabel, DropdownMenuPortal, DropdownMenuRoot, DropdownMenuTrigger } from 'reka-ui'
+import { DropdownMenuContent, DropdownMenuItem, DropdownMenuLabel, DropdownMenuPortal, DropdownMenuRoot, DropdownMenuSeparator, DropdownMenuTrigger } from 'reka-ui'
 import { shallowRef } from 'vue'
 
 import AnimatedContent from './AnimatedContent.vue'
@@ -10,7 +10,8 @@ import IconButton from './IconButton.vue'
  * Overflow menu ("⋯") of a page header or a list row with explicit actions on an id, such as "Copy ID".
  *
  * Copying is an action with a text label and a "Copied" confirmation, instead of an unlabeled copy icon next to every
- * name. The id itself is shown in the menu, so it can also be read.
+ * name. The id itself is shown in the menu, so it can also be read. The default slot adds the page's secondary actions
+ * below it (`DropdownMenuItem`s, such as "Compare attempts" on a run page).
  */
 const props = defineProps<{
   /** Full id to copy. */
@@ -47,6 +48,10 @@ async function copyId(event: Event): Promise<void> {
             <span :class="copied ? 'i-mingcute-check-line text-green-600 dark:text-green-400' : 'i-mingcute-copy-2-line'" aria-hidden="true" />
             {{ copied ? 'Copied' : 'Copy ID' }}
           </DropdownMenuItem>
+          <template v-if="$slots.default">
+            <DropdownMenuSeparator :class="['my-1 h-px bg-neutral-200 dark:bg-neutral-800']" />
+            <slot />
+          </template>
         </AnimatedContent>
       </DropdownMenuContent>
     </DropdownMenuPortal>
diff --git a/packages/ui/client/src/components/PageHeader.vue b/packages/ui/client/src/components/PageHeader.vue
index fe9b8ae..c1cbb47 100644
--- a/packages/ui/client/src/components/PageHeader.vue
+++ b/packages/ui/client/src/components/PageHeader.vue
@@ -30,6 +30,11 @@ const props = defineProps<{
   subtitle?: string
   /** Name of the page: the heading (unless the `title` slot replaces it) and the document title. */
   title: string
+  /**
+   * `sm` sets the title in body size, for a page whose header leads with something else (the run's score).
+   * @default 'lg'
+   */
+  titleSize?: 'lg' | 'sm'
 }>()
 // The browser tab follows the page; a page still loading keeps the plain "Vieval" of the title template.
 useHead({ title: () => (props.loading ? undefined : props.title) })
@@ -62,7 +67,7 @@ const siblings = computed(() => {
          title would get narrower than 24rem. -->
     <div :class="['flex items-start gap-x-3 gap-y-2 flex-wrap']">
       <div :class="['min-w-0 flex-1 md:basis-96']">
-        <h1 :class="['flex items-start gap-2 text-lg font-semibold [overflow-wrap:anywhere] leading-7']">
+        <h1 :class="['flex items-start gap-2 font-semibold [overflow-wrap:anywhere]', props.titleSize === 'sm' ? 'text-base leading-6' : 'text-lg leading-7']">
           <span v-if="props.level" :class="[levelIcons[props.level], 'shrink-0 mt-1 muted']" role="img" :aria-label="levelLabels[props.level]" :title="levelLabels[props.level]" />
           <span v-if="props.loading" :class="['skeleton h-6 my-0.5 w-56 max-w-full']" data-testid="page-header-skeleton" />
           <slot v-else name="title">
@@ -83,7 +88,12 @@ const siblings = computed(() => {
       </div>
       <!-- IdMenu renders no element of its own; the wrapper carries the order and the alignment. -->
       <span v-if="props.id && props.level" :class="['flex items-center min-h-7 max-md:order-1']">
-        <IdMenu :id="props.id" :kind="levelLabels[props.level].toLowerCase()" />
+        <!-- The page's secondary actions join the menu only when the page has some, so the menu adds no empty group. -->
+        <IdMenu :id="props.id" :kind="levelLabels[props.level].toLowerCase()">
+          <template v-if="$slots.menu" #default>
+            <slot name="menu" />
+          </template>
+        </IdMenu>
       </span>
     </div>
   </header>
diff --git a/packages/ui/client/src/pages/RunPage.vue b/packages/ui/client/src/pages/RunPage.vue
index 479563c..04d4326 100644
--- a/packages/ui/client/src/pages/RunPage.vue
+++ b/packages/ui/client/src/pages/RunPage.vue
@@ -5,6 +5,7 @@ import type { LogLine, RunListItem } from '../../../src/shared/contract'
 import type { ViewTab } from '../components/ViewTabs.vue'
 import type { Route } from '../router'
 
+import { DropdownMenuItem } from 'reka-ui'
 import { computed, toRef, useTemplateRef } from 'vue'
 
 import CountsBar from '../components/CountsBar.vue'
@@ -28,7 +29,7 @@ import { useRunLive } from '../composables/useRunLive'
 import { useStatusFavicon } from '../composables/useStatusFavicon'
 import { formatDateTime } from '../format'
 import { levelIcons } from '../hierarchy'
-import { attemptLabel, runLabel } from '../labels'
+import { runLabel } from '../labels'
 import { href, navigate } from '../router'
 
 /**
@@ -101,7 +102,7 @@ const errorCaseHref = (target: { caseId: string, taskId: string }) => href({ ...
 </script>
 
 <template>
-  <PageHeader :id="props.route.runKey" :loading="!live.snapshot.value && !live.error.value" level="run" :position="position" :title="documentTitle">
+  <PageHeader :id="props.route.runKey" :loading="!live.snapshot.value && !live.error.value" level="run" :position="position" :title="documentTitle" title-size="sm">
     <template #title>
       <IdLabel :id="props.route.runKey" :label="label" />
       <!-- RunDetails renders no element of its own; the wrapper centers the button on the title's first line. -->
@@ -111,9 +112,8 @@ const errorCaseHref = (target: { caseId: string, taskId: string }) => href({ ...
       <span v-if="position.experiment" :class="['inline-flex flex-wrap items-center gap-x-1.5 gap-y-0.5 mr-1 align-middle']">
         <span :class="[levelIcons.experiment]" aria-hidden="true" />
         <ExperimentName :experiment-id="position.experiment" :matrix="experimentMatrix" :href="position.workspace && position.project ? href({ experiment: position.experiment, name: 'scope', project: position.project, workspace: position.workspace }) : undefined" />
-        <template v-if="position.attempt">
-          · {{ attemptLabel(position.attempt) }}
-        </template>
+        <!-- The attempt's time was printed here; it is the run's start (the title) to the second, and the breadcrumb
+             names the attempt, so it only repeated the title. -->
       </span>
       <!-- The start is the title already; only the end (or the interruption) adds a fact. -->
       <template v-if="live.snapshot.value?.endedAt || live.snapshot.value?.interruptSignal">
@@ -128,14 +128,19 @@ const errorCaseHref = (target: { caseId: string, taskId: string }) => href({ ...
     <template #actions>
       <!-- The run's score at a glance, on the title's line: the headline with its completion rate, and the case bar
            (counts in its tooltip). A score over part of the cases is not the score of the run, so the completion rate
-           always stands next to it. Phones give the bar the full width and put the score below it. -->
+           always stands next to it. The score leads the header (larger than the title); phones put the bar below it
+           at the full width. -->
       <span v-if="counts && live.snapshot.value" :class="['flex items-center gap-3 mr-1', 'max-md:(w-full mr-0 flex-col items-stretch gap-2)']" data-testid="run-score">
-        <HeadlineScore :result="live.snapshot.value.headline" :definitions="live.snapshot.value.scoreDefinitions" :task-label="taskLabel" @errors="showErrors" />
-        <CountsBar :class="['w-32 max-md:(order-first w-full)']" :counts="counts" />
+        <HeadlineScore :result="live.snapshot.value.headline" :definitions="live.snapshot.value.scoreDefinitions" :task-label="taskLabel" size="lg" @errors="showErrors" />
+        <CountsBar :class="['w-32 max-md:w-full']" :counts="counts" />
       </span>
-      <a v-if="position.workspace && position.project && position.experiment" :class="['btn']" :href="href({ name: 'compare', query: { experiment: position.experiment, project: position.project, view: 'attempts', workspace: position.workspace } })">
-        <span class="i-mingcute-git-compare-line" aria-hidden="true" />Compare attempts
-      </a>
+    </template>
+    <template v-if="position.workspace && position.project && position.experiment" #menu>
+      <DropdownMenuItem as-child :class="['menu-item']">
+        <a :href="href({ name: 'compare', query: { experiment: position.experiment, project: position.project, view: 'attempts', workspace: position.workspace } })">
+          <span class="i-mingcute-git-compare-line" aria-hidden="true" />Compare attempts
+        </a>
+      </DropdownMenuItem>
     </template>
   </PageHeader>