diff --git a/src/renderer/src/components/right-sidebar/ChecksPanel.tsx b/src/renderer/src/components/right-sidebar/ChecksPanel.tsx
index 9eb7cef2eee..9f54c3c8470 100644
--- a/src/renderer/src/components/right-sidebar/ChecksPanel.tsx
+++ b/src/renderer/src/components/right-sidebar/ChecksPanel.tsx
@@ -145,6 +145,7 @@ import { localizedHostedReviewCopy } from '@/i18n/hosted-review-localized-copy'
 import { translate } from '@/i18n/i18n'
 import { groupPRComments, type PRCommentGroup } from '@/lib/pr-comment-groups'
 import { openChecksPanelHostedReviewUrl } from './checks-panel-hosted-review-click-routing'
+import { ChecksPanelUpdatedAtMetadata } from './checks-panel-updated-at-metadata'
 import {
   clearPullRequestGenerationRequiresPushBeforeCreate,
   createRunningPullRequestGenerationRecord,
@@ -3469,11 +3470,10 @@ export default function ChecksPanel(): React.JSX.Element {
 
         {/* Updated at */}
         {activeReview.updatedAt && (
-          <div className="text-[10px] text-muted-foreground/60">
-            {reviewShortLabel}{' '}
-            {translate('auto.components.right.sidebar.ChecksPanel.34464d00b9', 'updated')}
-            {new Date(activeReview.updatedAt).toLocaleString()}
-          </div>
+          <ChecksPanelUpdatedAtMetadata
+            reviewShortLabel={reviewShortLabel}
+            updatedAt={activeReview.updatedAt}
+          />
         )}
         {/* Merge / Delete Workspace actions */}
         {activeReview && activeWorktree && repo && (
diff --git a/src/renderer/src/components/right-sidebar/ChecksPanel.updated-at-metadata.test.tsx b/src/renderer/src/components/right-sidebar/ChecksPanel.updated-at-metadata.test.tsx
new file mode 100644
index 00000000000..48e9dc210ea
--- /dev/null
+++ b/src/renderer/src/components/right-sidebar/ChecksPanel.updated-at-metadata.test.tsx
@@ -0,0 +1,28 @@
+// @vitest-environment happy-dom
+
+import { renderToStaticMarkup } from 'react-dom/server'
+import { describe, expect, it } from 'vitest'
+import { ChecksPanelUpdatedAtMetadata } from './checks-panel-updated-at-metadata'
+
+function renderMetadataText(reviewShortLabel: string): string {
+  const container = document.createElement('div')
+  container.innerHTML = renderToStaticMarkup(
+    <ChecksPanelUpdatedAtMetadata
+      reviewShortLabel={reviewShortLabel}
+      updatedAt="2026-06-24T17:30:00.000Z"
+    />
+  )
+  return container.textContent ?? ''
+}
+
+describe('ChecksPanel updated-at metadata', () => {
+  it.each(['PR', 'MR'])(
+    'renders a whitespace boundary between the %s updated label and timestamp',
+    (reviewShortLabel) => {
+      const text = renderMetadataText(reviewShortLabel)
+
+      expect(text).toMatch(new RegExp(`${reviewShortLabel} updated\\s+\\S`))
+      expect(text).not.toMatch(new RegExp(`${reviewShortLabel} updated\\S`))
+    }
+  )
+})
diff --git a/src/renderer/src/components/right-sidebar/checks-panel-updated-at-metadata.tsx b/src/renderer/src/components/right-sidebar/checks-panel-updated-at-metadata.tsx
new file mode 100644
index 00000000000..4c4a90b7ecd
--- /dev/null
+++ b/src/renderer/src/components/right-sidebar/checks-panel-updated-at-metadata.tsx
@@ -0,0 +1,20 @@
+import type React from 'react'
+import { translate } from '@/i18n/i18n'
+
+type ChecksPanelUpdatedAtMetadataProps = {
+  reviewShortLabel: string
+  updatedAt: string
+}
+
+export function ChecksPanelUpdatedAtMetadata({
+  reviewShortLabel,
+  updatedAt
+}: ChecksPanelUpdatedAtMetadataProps): React.JSX.Element {
+  return (
+    <div className="text-[10px] text-muted-foreground/60">
+      {reviewShortLabel}{' '}
+      {translate('auto.components.right.sidebar.ChecksPanel.34464d00b9', 'updated')}{' '}
+      {new Date(updatedAt).toLocaleString()}
+    </div>
+  )
+}
diff --git a/src/renderer/src/components/right-sidebar/pr-comment-presentation.test.ts b/src/renderer/src/components/right-sidebar/pr-comment-presentation.test.ts
index cfee6f48d8b..abe5ddbe8de 100644
--- a/src/renderer/src/components/right-sidebar/pr-comment-presentation.test.ts
+++ b/src/renderer/src/components/right-sidebar/pr-comment-presentation.test.ts
@@ -22,8 +22,12 @@ describe('pr-comment-presentation', () => {
     expect(cards.avatar).toContain('border-border')
     expect(cards.avatar).toContain('bg-background')
 
-    expect(getPRCommentPresentationClasses('focus').useCardLayout).toBe(true)
-    expect(getPRCommentPresentationClasses('focus').commentBody).toContain('text-[14px]')
+    const focus = getPRCommentPresentationClasses('focus')
+    expect(focus.useCardLayout).toBe(true)
+    expect(focus.commentBody).toContain('text-[13px]')
+    expect(focus.commentBodyReply).toContain('text-[13px]')
+    expect(focus.author).toContain('text-[13px]')
+    expect(focus.list).toContain('gap-3')
   })
 
   it('preserves the legacy flat layout tokens', () => {
diff --git a/src/renderer/src/components/right-sidebar/pr-comment-presentation.ts b/src/renderer/src/components/right-sidebar/pr-comment-presentation.ts
index 7b9a645b994..3553d6b798b 100644
--- a/src/renderer/src/components/right-sidebar/pr-comment-presentation.ts
+++ b/src/renderer/src/components/right-sidebar/pr-comment-presentation.ts
@@ -96,6 +96,9 @@ const COMMENT_AVATAR =
 const RESOLVED_SECTION_LABEL =
   'text-[11px] font-semibold uppercase tracking-wider text-muted-foreground'
 
+const CARD_COMMENT_BODY_SIZE = 'text-[13px] leading-relaxed'
+const CARD_COMMENT_AUTHOR_SIZE = 'text-[13px]'
+
 const RESOLVED_SECTION_TRIGGER = cn(
   RESOLVED_SECTION_LABEL,
   'rounded-none border-0 bg-transparent px-3 py-2 shadow-none hover:bg-accent/40 hover:text-foreground hover:no-underline'
@@ -173,8 +176,6 @@ export function getPRCommentPresentationClasses(
   }
 
   const isFocus = variant === 'focus'
-  const bodySize = isFocus ? 'text-[14px] leading-relaxed' : 'text-[13px] leading-relaxed'
-  const authorSize = isFocus ? 'text-[14px]' : 'text-[13px]'
   const listGap = isFocus ? 'gap-3' : 'gap-2'
   const bodyPadding = isFocus ? 'px-4 py-3' : 'px-4 py-2.5'
   const headerPadding = isFocus ? 'px-3.5 py-2.5' : 'px-3 py-2'
@@ -191,10 +192,10 @@ export function getPRCommentPresentationClasses(
     commentRowReply: `border-t ${COMMENT_CARD_DIVIDER} bg-muted/25 dark:bg-muted/10`,
     commentHeader: `flex flex-col gap-1 border-b ${COMMENT_CARD_DIVIDER} ${headerPadding}`,
     commentHeaderReply: `flex min-w-0 items-center gap-2 ${headerPadding}`,
-    commentBody: `${bodyPadding} ${bodySize} text-foreground`,
-    commentBodyReply: `${bodyPadding} ${bodySize} text-foreground`,
+    commentBody: `${bodyPadding} ${CARD_COMMENT_BODY_SIZE} text-foreground`,
+    commentBodyReply: `${bodyPadding} ${CARD_COMMENT_BODY_SIZE} text-foreground`,
     commentBodyMarkdown: MARKDOWN_BASE,
-    author: `min-w-0 flex-1 truncate ${authorSize} font-semibold text-foreground`,
+    author: `min-w-0 flex-1 truncate ${CARD_COMMENT_AUTHOR_SIZE} font-semibold text-foreground`,
     authorResolved: 'text-muted-foreground',
     avatar: `size-5 ${COMMENT_AVATAR}`,
     avatarReply: `size-4 ${COMMENT_AVATAR}`,