diff --git a/apps/desktop/electron/main.ts b/apps/desktop/electron/main.ts
index b51bc4088b..229e080c55 100644
--- a/apps/desktop/electron/main.ts
+++ b/apps/desktop/electron/main.ts
@@ -5902,6 +5902,7 @@ function installDevToolsShortcut(window) {
     if (input.key === 'F12') {
       if (f12Blocked) {
         event.preventDefault()
+
         return
       }
       // Not blocked — fall through to open DevTools.
diff --git a/apps/desktop/src/app/chat/composer/ime-composition-dom-repro.test.tsx b/apps/desktop/src/app/chat/composer/ime-composition-dom-repro.test.tsx
index 917942cb43..79febaa0de 100644
--- a/apps/desktop/src/app/chat/composer/ime-composition-dom-repro.test.tsx
+++ b/apps/desktop/src/app/chat/composer/ime-composition-dom-repro.test.tsx
@@ -157,6 +157,7 @@ describe('composer IME composition — send button visibility (#39614)', () => {
             if (composingRef.current) {
               return
             }
+
             flushEditorToDraft(event.currentTarget)
           }}
           onKeyDown={handleKeyDown}
diff --git a/apps/desktop/src/app/chat/index.tsx b/apps/desktop/src/app/chat/index.tsx
index 12ac010ece..9f77e4f617 100644
--- a/apps/desktop/src/app/chat/index.tsx
+++ b/apps/desktop/src/app/chat/index.tsx
@@ -401,9 +401,7 @@ export const ChatView = memo(function ChatView({
   // direct nav). Derived in render so the swap reads instantly: the same frame
   // the id changes we drop the old transcript and show the loader, instead of
   // waiting for the resume effect (which paints a frame later) to clear them.
-  const routeSessionMismatch = isPrimary
-    ? isRouteSessionMismatch(routedSessionId, selectedSessionId, sessions)
-    : false
+  const routeSessionMismatch = isPrimary ? isRouteSessionMismatch(routedSessionId, selectedSessionId, sessions) : false
 
   // The compact new-session pop-out skips the wordmark/tagline intro — it's a
   // scratch window, not the full-height empty state.
diff --git a/apps/desktop/src/app/chat/route-session-state.ts b/apps/desktop/src/app/chat/route-session-state.ts
index 1c35b157f9..90c0c269df 100644
--- a/apps/desktop/src/app/chat/route-session-state.ts
+++ b/apps/desktop/src/app/chat/route-session-state.ts
@@ -25,7 +25,6 @@ export function isRouteSessionMismatch(
   }
 
   return !sessions.some(
-    session =>
-      sessionMatchesStoredId(session, routedSessionId) && sessionMatchesStoredId(session, selectedSessionId)
+    session => sessionMatchesStoredId(session, routedSessionId) && sessionMatchesStoredId(session, selectedSessionId)
   )
 }
diff --git a/apps/desktop/src/components/assistant-ui/thread/system-message.tsx b/apps/desktop/src/components/assistant-ui/thread/system-message.tsx
index 4fefc7a306..112611ffe0 100644
--- a/apps/desktop/src/components/assistant-ui/thread/system-message.tsx
+++ b/apps/desktop/src/components/assistant-ui/thread/system-message.tsx
@@ -60,9 +60,7 @@ export const SystemMessage: FC = () => {
         <Codicon className="text-muted-foreground/55" name="compass" size="0.75rem" />
         <span className="text-muted-foreground/55">steered</span>
         <span className="text-muted-foreground/35">·</span>
-        <span className="whitespace-pre-wrap">{steerNote.groups.text.trim()}</span>
-        {' '}
-        <MessageTimelineTimestamp />
+        <span className="whitespace-pre-wrap">{steerNote.groups.text.trim()}</span> <MessageTimelineTimestamp />
       </MessagePrimitive.Root>
     )
   }
@@ -93,8 +91,7 @@ export const SystemMessage: FC = () => {
             <span className="mx-1.5 text-muted-foreground/35">·</span>
             <LinkifiedText className="whitespace-pre-wrap" explicitOnly pretty={false} text={output} />
           </>
-        )}
-        {' '}
+        )}{' '}
         <MessageTimelineTimestamp className={cn(multiline ? 'mt-0.5 block' : 'ml-1.5')} />
       </MessagePrimitive.Root>
     )
@@ -111,8 +108,7 @@ export const SystemMessage: FC = () => {
       data-role="system"
       data-slot="aui_system-message-root"
     >
-      <LinkifiedText className="whitespace-pre-wrap" explicitOnly pretty={false} text={text} />
-      {' '}
+      <LinkifiedText className="whitespace-pre-wrap" explicitOnly pretty={false} text={text} />{' '}
       <MessageTimelineTimestamp className={cn(multiline ? 'mt-0.5 block' : 'ml-1.5')} />
     </MessagePrimitive.Root>
   )
diff --git a/apps/desktop/src/components/assistant-ui/thread/timeline-timestamp.tsx b/apps/desktop/src/components/assistant-ui/thread/timeline-timestamp.tsx
index 8a920aeb92..71773c1a66 100644
--- a/apps/desktop/src/components/assistant-ui/thread/timeline-timestamp.tsx
+++ b/apps/desktop/src/components/assistant-ui/thread/timeline-timestamp.tsx
@@ -45,8 +45,7 @@ export const TimelineTimestamp: FC<{
     return null
   }
 
-  const completed =
-    validUnixSeconds(completedAt) && completedAt > timestamp ? unixDate(completedAt) : null
+  const completed = validUnixSeconds(completedAt) && completedAt > timestamp ? unixDate(completedAt) : null
 
   const validCompletedAt = completed && validUnixSeconds(completedAt) ? completedAt : undefined
   const startLabel = formatTimelineRange(timestamp, undefined)
@@ -96,7 +95,8 @@ export const MessageTimelineTimestamp: FC<{
       timelineTimestamp?: unknown
     }
 
-    const solePart = s.message.parts.length === 1 ? (s.message.parts[0] as { completedAt?: unknown; timestamp?: unknown }) : null
+    const solePart =
+      s.message.parts.length === 1 ? (s.message.parts[0] as { completedAt?: unknown; timestamp?: unknown }) : null
 
     return (
       Boolean(solePart) &&
diff --git a/apps/desktop/src/lib/chat-messages.ts b/apps/desktop/src/lib/chat-messages.ts
index 2a8edd941f..8f26f8c000 100644
--- a/apps/desktop/src/lib/chat-messages.ts
+++ b/apps/desktop/src/lib/chat-messages.ts
@@ -1270,7 +1270,9 @@ const assistantTimelineMatch = (stored: ChatMessage, local: ChatMessage) => {
   }
 
   const localToolIds = new Set(
-    local.parts.filter(part => part.type === 'tool-call').map(part => (part.type === 'tool-call' ? part.toolCallId : ''))
+    local.parts
+      .filter(part => part.type === 'tool-call')
+      .map(part => (part.type === 'tool-call' ? part.toolCallId : ''))
   )
 
   const toolMatch = stored.parts.some(part => part.type === 'tool-call' && localToolIds.has(part.toolCallId))
@@ -1338,7 +1340,9 @@ export function reconcileLocalAssistantTimeline(
     const unusedLocalParts = new Set(local.parts.map((_, index) => index))
 
     const parts = message.parts.map(part => {
-      const localIndex = local.parts.findIndex((candidate, index) => unusedLocalParts.has(index) && timelinePartMatch(part, candidate))
+      const localIndex = local.parts.findIndex(
+        (candidate, index) => unusedLocalParts.has(index) && timelinePartMatch(part, candidate)
+      )
 
       if (localIndex === -1) {
         return part
diff --git a/apps/desktop/src/lib/chat-runtime.ts b/apps/desktop/src/lib/chat-runtime.ts
index aaa594160d..c00dd185ea 100644
--- a/apps/desktop/src/lib/chat-runtime.ts
+++ b/apps/desktop/src/lib/chat-runtime.ts
@@ -536,7 +536,10 @@ export function coalesceToolOnlyAssistants(messages: ChatMessage[], cache: ToolM
               ...prev,
               completedAt: [prev.completedAt, message.completedAt, ...message.parts.map(part => part.completedAt)]
                 .filter((value): value is number => value !== undefined)
-                .reduce<number | undefined>((latest, value) => (latest === undefined ? value : Math.max(latest, value)), undefined),
+                .reduce<number | undefined>(
+                  (latest, value) => (latest === undefined ? value : Math.max(latest, value)),
+                  undefined
+                ),
               parts: [...prev.parts, ...message.parts]
             }
 
diff --git a/ui-tui/src/domain/messages.ts b/ui-tui/src/domain/messages.ts
index 1edac1e90f..86d2b29223 100644
--- a/ui-tui/src/domain/messages.ts
+++ b/ui-tui/src/domain/messages.ts
@@ -31,7 +31,8 @@ export const toTranscriptMessages = (rows: unknown): Msg[] => {
 
     const { context, display_kind, name, role, text, timestamp } = row as TranscriptRow
 
-    const createdAt = typeof timestamp === 'number' && Number.isFinite(timestamp) && timestamp > 0 ? timestamp : undefined
+    const createdAt =
+      typeof timestamp === 'number' && Number.isFinite(timestamp) && timestamp > 0 ? timestamp : undefined
 
     if (role === 'tool') {
       pending.push(buildToolTrailLine(name ?? 'tool', context ?? ''))