fix(desktop): keep the sidebar alive for messaging-only and cron-only profiles

showSessionSections gated the whole session area — search, sessions,
messaging platforms, cron jobs — on normal-session visibility. A profile
whose only sessions are messaging threads, or that only has scheduled
jobs, collapsed the sidebar to the 'No sessions yet' blank state, hiding
its Telegram/Slack conversations and jobs until a normal session was
created (the messaging half of #63593).

Messaging sessions and cron jobs are already profile-scoped upstream
(sidebarProfileForScope / filterSessionsByProfileScope), so the sections
rendered inside the area are the active profile's own — no state is shared
between profiles.

Fixes #63593

apps/desktop/src/app/chat/sidebar/chat-sidebar.integration.test.tsx

@@ -345,6 +345,61 @@ describe('ChatSidebar section labels', () => {
   })
 })
 
+describe('ChatSidebar empty-profile sections', () => {
+  // A profile with no normal sessions but messaging threads / cron jobs must
+  // still show them: the session area (and the sections inside it) is gated by
+  // showSessionSections, which used to key only on normal-session visibility
+  // and collapsed these profiles to the blank state (#63593).
+  const telegramThread = (id: string, last_active: number) =>
+    makeSessionInfo({ connection_id: 'local', id, last_active, profile: 'default', source: 'telegram', title: id })
+
+  beforeEach(() => {
+    $connectionsRegistry.set({
+      version: 2,
+      primary: 'local',
+      secureTokenStorage: true,
+      connections: [{ id: 'local', label: 'This computer', kind: 'local', tokenSet: false, tokenPreview: null }]
+    } as NonNullable<typeof $connectionsRegistry.value>)
+    $profiles.set([{ name: 'default', is_default: true }] as typeof $profiles.value)
+    $sessions.set([])
+    $messagingSessions.set([telegramThread('tg-one', 60), telegramThread('tg-two', 30)])
+    $messagingTruncated.set(false)
+    $sidebarMessagingOpenIds.set(['telegram'])
+    $sessionsLoading.set(false)
+  })
+
+  afterEach(() => {
+    cleanup()
+    $messagingSessions.set([])
+    $sidebarMessagingOpenIds.set([])
+    $sessions.set([])
+  })
+
+  it('shows the messaging section for a profile with no normal sessions', () => {
+    const { container } = renderSidebar('/', 'chat')
+
+    // The Telegram platform section renders with its threads…
+    expect(screen.getAllByText('Telegram').length).toBeGreaterThan(0)
+    expect(screen.getByText('tg-one')).toBeTruthy()
+    // …and the sidebar did not collapse to the blank state: the search field
+    // only renders inside the session area, so its presence proves the area
+    // (and the messaging sections inside it) rendered.
+    expect(screen.getByPlaceholderText('Search sessions…')).toBeTruthy()
+  })
+
+  it('still shows the blank state when a profile has nothing at all', () => {
+    $messagingSessions.set([])
+    $sidebarMessagingOpenIds.set([])
+
+    // SidebarBlankState: a centered "No sessions yet" plus a "New project"
+    // button, rendered INSTEAD of the whole session area (search included).
+    const { container } = renderSidebar('/', 'chat')
+
+    expect(container.textContent).toContain('No sessions yet')
+    expect(screen.queryByPlaceholderText('Search sessions…')).toBeNull()
+  })
+})
+
 describe('ChatSidebar messaging owners', () => {
   const telegram = (id: string, profile: string, last_active: number) =>
     makeSessionInfo({ connection_id: 'local', id, last_active, profile, source: 'telegram', title: id })

apps/desktop/src/app/chat/sidebar/index.tsx

@@ -1524,8 +1524,17 @@ export function ChatSidebar({
 
   // Filtered down to nothing still renders the section: the empty state is what
   // tells you the filter — not an empty account — is why the list is bare.
+  // Messaging threads and cron jobs live inside this area too: a profile whose
+  // only sessions are messaging threads (or that only has scheduled jobs) must
+  // not collapse the whole sidebar to the blank state (#63593).
   const showSessionSections =
-    showSessionSkeletons || sessionsLoadError || filtersActive || sortedSessions.length > 0 || projectModel.length > 0
+    showSessionSkeletons ||
+    sessionsLoadError ||
+    filtersActive ||
+    sortedSessions.length > 0 ||
+    projectModel.length > 0 ||
+    messagingGroups.length > 0 ||
+    (showsAdvancedChrome && cronJobs.length > 0)
 
   // The sidebar's session-area mode — exposed as data-attributes so custom
   // skins can target project mode (overview vs. entered), archived, or search