diff --git a/frontend/app/components/assistant-ui/thread-list.tsx b/frontend/app/components/assistant-ui/thread-list.tsx
index d3961af..21d0c83 100644
--- a/frontend/app/components/assistant-ui/thread-list.tsx
+++ b/frontend/app/components/assistant-ui/thread-list.tsx
@@ -479,11 +479,6 @@ const ClawSessionList: FC = () => {
 					const active = activeSessionId === session.session_id;
 					const loading = loadingSessionId === session.session_id;
 					const badge = sessionBadges.bySessionId.get(session.session_id);
-					const actionPinned =
-						badge?.running === true ||
-						badge?.unread === true ||
-						deletingSessionId === session.session_id ||
-						openMenuSessionId === session.session_id;
 					return (
 						<div
 							key={`claw-session-${session.session_id}-${session.modified_at}`}
@@ -520,9 +515,7 @@ const ClawSessionList: FC = () => {
 							) : (
 								<button
 									type="button"
-									className={`aui-thread-list-item-trigger flex h-full min-w-0 flex-1 items-center overflow-hidden pl-3 text-start text-sm ${
-										actionPinned ? "pr-7" : "pr-2 group-hover:pr-7"
-									}`}
+									className="aui-thread-list-item-trigger flex h-full min-w-0 flex-1 items-center overflow-hidden px-3 pr-1 text-start text-sm"
 									onClick={async () => {
 										console.log("[session-list] click", {
 											sessionId: session.session_id,
@@ -532,7 +525,7 @@ const ClawSessionList: FC = () => {
 										await openSession(session.session_id);
 									}}
 								>
-									<span className="min-w-0 overflow-hidden whitespace-nowrap">
+									<span className="min-w-0 truncate">
 										{loading
 											? "回放中..."
 											: session.preview || session.session_id}
@@ -725,7 +718,7 @@ function SessionActionSlot({
 }) {
 	const hasBadge = running || unread;
 	return (
-		<div className="absolute top-1/2 right-1 z-10 flex size-6 -translate-y-1/2 items-center justify-center">
+		<div className="relative mr-2 flex size-7 shrink-0 items-center justify-center">
 			<span
 				aria-hidden={!hasBadge}
 				className="pointer-events-none absolute inset-0 flex items-center justify-center text-muted-foreground transition-opacity group-hover:opacity-0 data-[hidden=true]:opacity-0 data-[open=true]:opacity-0"
diff --git a/frontend/app/components/ui/sidebar.tsx b/frontend/app/components/ui/sidebar.tsx
index b2352ca..ae8f77c 100644
--- a/frontend/app/components/ui/sidebar.tsx
+++ b/frontend/app/components/ui/sidebar.tsx
@@ -26,7 +26,7 @@ import { cn } from "@/lib/utils";
 
 const SIDEBAR_COOKIE_NAME = "sidebar_state";
 const SIDEBAR_COOKIE_MAX_AGE = 60 * 60 * 24 * 7;
-const SIDEBAR_WIDTH = "16rem";
+const SIDEBAR_WIDTH = "17.5rem";
 const SIDEBAR_WIDTH_MOBILE = "18rem";
 const SIDEBAR_WIDTH_ICON = "3rem";
 const SIDEBAR_KEYBOARD_SHORTCUT = "b";