feat: refresh workbench visual layout

src/features/agent/components/agent-collapsed-rail.tsx

@@ -1,7 +1,6 @@
 import { ChevronRight } from "lucide-react";
 import type { PersonaState } from "@/shared/ai-elements/persona";
 import { cn } from "@/shared/ui/cn";
-import { MAP_MAJOR_PANEL_RADIUS_CLASS_NAME } from "@/features/map/core";
 import { AgentPersona } from "./agent-persona";
 
 type AgentCollapsedRailProps = {
@@ -21,8 +20,7 @@ export function AgentCollapsedRail({
     <aside
       aria-label="Agent 折叠栏"
       className={cn(
-        "agent-rail-enter acrylic-panel pointer-events-auto w-[72px] border p-1.5",
-        MAP_MAJOR_PANEL_RADIUS_CLASS_NAME
+        "agent-rail-enter acrylic-panel pointer-events-auto w-[72px] rounded-2xl border p-1.5"
       )}
     >
       <button