diff --git a/apps/desktop/src/app/gateway/hooks/use-gateway-boot.test.tsx b/apps/desktop/src/app/gateway/hooks/use-gateway-boot.test.tsx
index 4388eac7eb1e..a70cfedd8e37 100644
--- a/apps/desktop/src/app/gateway/hooks/use-gateway-boot.test.tsx
+++ b/apps/desktop/src/app/gateway/hooks/use-gateway-boot.test.tsx
@@ -134,6 +134,7 @@ const originalWebSocket = globalThis.WebSocket
 beforeEach(() => {
   // Drop any parked gateway left by a prior file/case (globalThis slot).
   const leftover = takeGatewaySurvivor()
+
   if (leftover) {
     try {
       leftover.gateway.close()
@@ -141,6 +142,7 @@ beforeEach(() => {
       // ignore
     }
   }
+
   vi.useFakeTimers()
   FakeWebSocket.mode = 'open'
   FakeWebSocket.instances = []
@@ -166,6 +168,7 @@ afterEach(() => {
   // open gateway instead of tearing it down (the real HMR path). Drain + close
   // that survivor so the next test boots a fresh socket instead of adoptBoot().
   const survivor = takeGatewaySurvivor()
+
   if (survivor) {
     try {
       survivor.gateway.close()
@@ -173,6 +176,7 @@ afterEach(() => {
       // ignore
     }
   }
+
   vi.useRealTimers()
   ;(globalThis as { WebSocket: unknown }).WebSocket = originalWebSocket
   delete (window as { hermesDesktop?: unknown }).hermesDesktop
diff --git a/apps/desktop/src/app/session/hooks/use-message-stream/index.ts b/apps/desktop/src/app/session/hooks/use-message-stream/index.ts
index c921a13f0a14..53a17b193c61 100644
--- a/apps/desktop/src/app/session/hooks/use-message-stream/index.ts
+++ b/apps/desktop/src/app/session/hooks/use-message-stream/index.ts
@@ -512,11 +512,9 @@ export function useMessageStream({
             // text merge — replaces the interim's text with the full final.)
             const finalContinuesInterim = Boolean(
               existing.interim &&
-                finalText &&
-                existingText &&
-                (finalText === existingText ||
-                  finalText.startsWith(existingText) ||
-                  existingText.startsWith(finalText))
+              finalText &&
+              existingText &&
+              (finalText === existingText || finalText.startsWith(existingText) || existingText.startsWith(finalText))
             )
 
             if (existing.pending || (!interimBoundaryPending && finalText && existingText === finalText)) {
diff --git a/apps/desktop/src/lib/chat-messages.test.ts b/apps/desktop/src/lib/chat-messages.test.ts
index f7ef7d540f01..e86ba5593ecc 100644
--- a/apps/desktop/src/lib/chat-messages.test.ts
+++ b/apps/desktop/src/lib/chat-messages.test.ts
@@ -167,20 +167,20 @@ describe('toChatMessages', () => {
         role: 'user',
         content: 'opaque compaction payload',
         display_kind: 'hidden',
-        timestamp: 3,
+        timestamp: 3
       },
       {
         role: 'user',
         content: 'opaque model context payload',
         display_kind: 'model_switch',
-        timestamp: 4,
+        timestamp: 4
       },
       {
         role: 'user',
         content: 'opaque delegation context payload',
         display_kind: 'async_delegation_complete',
-        timestamp: 5,
-      },
+        timestamp: 5
+      }
     ])
 
     expect(messages.map(message => message.role)).toEqual(['user', 'assistant', 'system', 'system'])
@@ -188,7 +188,7 @@ describe('toChatMessages', () => {
       'real user turn',
       'real assistant reply',
       'model changed',
-      'background agent work finished',
+      'background agent work finished'
     ])
   })
 })
diff --git a/apps/desktop/src/lib/chat-messages.ts b/apps/desktop/src/lib/chat-messages.ts
index 4b20a6208dbf..00d1c73a64d4 100644
--- a/apps/desktop/src/lib/chat-messages.ts
+++ b/apps/desktop/src/lib/chat-messages.ts
@@ -313,9 +313,11 @@ function timelineDisplayContent(message: SessionMessage, content: string): strin
   }
 
   if (message.display_kind === 'async_delegation_complete') {
-    const count = message.display_metadata && 'task_count' in message.display_metadata
-      ? message.display_metadata.task_count
-      : undefined
+    const count =
+      message.display_metadata && 'task_count' in message.display_metadata
+        ? message.display_metadata.task_count
+        : undefined
+
     return count === undefined
       ? 'background agent work finished'
       : `${count} background agent${count === 1 ? '' : 's'} finished`
@@ -905,14 +907,17 @@ export function toChatMessages(messages: SessionMessage[]): ChatMessage[] {
     }
 
     const content = message.content || message.text || message.context || message.name
+
     const displayContent = transcriptContent(
       message.display_kind,
       timelineDisplayContent(message, displayContentForMessage(message.role, content))
     )
+
     const displayRole =
       message.display_kind === 'model_switch' || message.display_kind === 'async_delegation_complete'
         ? 'system'
         : message.role
+
     const parts: ChatMessagePart[] = []
 
     const reasoning =
diff --git a/apps/desktop/src/types/hermes.ts b/apps/desktop/src/types/hermes.ts
index a80d6ba8137c..0b93172c875b 100644
--- a/apps/desktop/src/types/hermes.ts
+++ b/apps/desktop/src/types/hermes.ts
@@ -425,7 +425,13 @@ export interface SessionInfo {
 
 export type TimelineDisplayMetadata =
   | { model: string; provider?: string }
-  | { delegation_id: string; task_count: number; completed_count?: number; failed_count?: number; duration_seconds?: number }
+  | {
+      delegation_id: string
+      task_count: number
+      completed_count?: number
+      failed_count?: number
+      duration_seconds?: number
+    }
 
 export interface SessionMessage {
   codex_reasoning_items?: unknown
diff --git a/ui-tui/src/__tests__/messages.test.ts b/ui-tui/src/__tests__/messages.test.ts
index e9a3d4fdb2bf..d5baa1b31186 100644
--- a/ui-tui/src/__tests__/messages.test.ts
+++ b/ui-tui/src/__tests__/messages.test.ts
@@ -31,7 +31,7 @@ describe('toTranscriptMessages', () => {
     const rows = [
       { role: 'user', text: 'visible prompt' },
       { role: 'user', text: '[CONTEXT COMPACTION — REFERENCE ONLY]', display_kind: 'hidden' },
-      { role: 'assistant', text: 'visible reply' },
+      { role: 'assistant', text: 'visible reply' }
     ]
 
     const result = toTranscriptMessages(rows)
@@ -43,14 +43,14 @@ describe('toTranscriptMessages', () => {
     const rows = [
       { role: 'user', text: 'hello' },
       { role: 'user', text: '[System: model changed to gpt-5]', display_kind: 'model_switch' },
-      { role: 'assistant', text: 'hi' },
+      { role: 'assistant', text: 'hi' }
     ]
 
     const result = toTranscriptMessages(rows)
     expect(result.map(msg => [msg.kind, msg.role, msg.text])).toEqual([
       [undefined, 'user', 'hello'],
       ['event', 'system', 'model changed'],
-      [undefined, 'assistant', 'hi'],
+      [undefined, 'assistant', 'hi']
     ])
   })
 
@@ -58,8 +58,13 @@ describe('toTranscriptMessages', () => {
     const rows = [
       { role: 'user', text: 'do work' },
       { role: 'assistant', text: 'done' },
-      { role: 'user', text: '[IMPORTANT: delegation done]', display_kind: 'async_delegation_complete', display_metadata: { task_count: 3 } },
-      { role: 'assistant', text: 'merged' },
+      {
+        role: 'user',
+        text: '[IMPORTANT: delegation done]',
+        display_kind: 'async_delegation_complete',
+        display_metadata: { task_count: 3 }
+      },
+      { role: 'assistant', text: 'merged' }
     ]
 
     const result = toTranscriptMessages(rows)
@@ -67,14 +72,12 @@ describe('toTranscriptMessages', () => {
       [undefined, 'do work'],
       [undefined, 'done'],
       ['event', '3 background agents finished'],
-      [undefined, 'merged'],
+      [undefined, 'merged']
     ])
   })
 
   it('projects async_delegation_complete without metadata as generic text', () => {
-    const rows = [
-      { role: 'user', text: 'event', display_kind: 'async_delegation_complete' },
-    ]
+    const rows = [{ role: 'user', text: 'event', display_kind: 'async_delegation_complete' }]
 
     const result = toTranscriptMessages(rows)
     expect(result[0]?.kind).toBe('event')
diff --git a/ui-tui/src/components/messageLine.tsx b/ui-tui/src/components/messageLine.tsx
index fc42d4dc3f7f..7e0499d45694 100644
--- a/ui-tui/src/components/messageLine.tsx
+++ b/ui-tui/src/components/messageLine.tsx
@@ -131,7 +131,9 @@ export const MessageLine = memo(function MessageLine({
         <NoSelect flexShrink={0} fromLeftEdge width={eventGutterWidth}>
           <Text> </Text>
         </NoSelect>
-        <Text color={t.color.muted} dimColor>◈ {msg.text}</Text>
+        <Text color={t.color.muted} dimColor>
+          ◈ {msg.text}
+        </Text>
       </Box>
     )
   }
diff --git a/ui-tui/src/domain/messages.ts b/ui-tui/src/domain/messages.ts
index 4f4ff426b95f..ba4340724d38 100644
--- a/ui-tui/src/domain/messages.ts
+++ b/ui-tui/src/domain/messages.ts
@@ -72,9 +72,12 @@ export const toTranscriptMessages = (rows: unknown): Msg[] => {
     if (display_kind === 'async_delegation_complete') {
       const meta = (row as TranscriptRow).display_metadata
       const count = meta && typeof meta.task_count === 'number' ? meta.task_count : undefined
-      const label = count === undefined
-        ? 'background agent work finished'
-        : `${count} background agent${count === 1 ? '' : 's'} finished`
+
+      const label =
+        count === undefined
+          ? 'background agent work finished'
+          : `${count} background agent${count === 1 ? '' : 's'} finished`
+
       out.push({ kind: 'event', role: 'system', text: label })
       pending = []