diff --git a/web/app/workbench/layout.tsx b/web/app/workbench/layout.tsx
index 9a1fb1a..640308f 100644
--- a/web/app/workbench/layout.tsx
+++ b/web/app/workbench/layout.tsx
@@ -8,6 +8,7 @@ import { useEffect } from "react"
 import { useAuth } from "@/components/auth-provider"
 import { NotificationProvider } from "@/components/notification-provider"
 import { WorkbenchHeader } from "@/components/workbench-header"
+import { WorkbenchRail } from "@/components/workbench-rail"
 import { useI18n } from "@/i18n/provider"
 
 export default function WorkbenchLayout({
@@ -47,7 +48,7 @@ export default function WorkbenchLayout({
 
   return (
     <div
-      className="flex h-svh min-h-0 flex-col overflow-hidden bg-background"
+      className="flex h-svh min-h-0 overflow-hidden bg-background"
       style={
         {
           "--header-height": "calc(var(--spacing) * 12)",
@@ -55,8 +56,11 @@ export default function WorkbenchLayout({
       }
     >
       <NotificationProvider>
-        <WorkbenchHeader />
-        <main className="flex min-h-0 flex-1 overflow-hidden">{children}</main>
+        <WorkbenchRail />
+        <div className="flex min-w-0 flex-1 flex-col overflow-hidden">
+          <WorkbenchHeader />
+          <main className="flex min-h-0 flex-1 overflow-hidden">{children}</main>
+        </div>
       </NotificationProvider>
     </div>
   )
diff --git a/web/components/workbench-rail.tsx b/web/components/workbench-rail.tsx
new file mode 100644
index 0000000..49b8897
--- /dev/null
+++ b/web/components/workbench-rail.tsx
@@ -0,0 +1,58 @@
+"use client"
+
+import { FileTextIcon, MessageSquareTextIcon } from "lucide-react"
+import Link from "next/link"
+import { usePathname } from "next/navigation"
+
+import { useI18n } from "@/i18n/provider"
+import { cn } from "@/lib/utils"
+
+const workbenchRailItems = [
+  {
+    key: "conversations",
+    titleKey: "nav.conversations",
+    href: "/workbench",
+    icon: MessageSquareTextIcon,
+  },
+  {
+    key: "tickets",
+    titleKey: "nav.tickets",
+    href: "/dashboard/tickets",
+    icon: FileTextIcon,
+  },
+]
+
+export function WorkbenchRail() {
+  const t = useI18n()
+  const pathname = usePathname()
+
+  return (
+    <aside className="flex h-svh w-16 shrink-0 flex-col items-center border-r border-border/70 bg-sidebar px-2 py-3 text-sidebar-foreground">
+      <nav className="flex w-full flex-col items-center gap-2">
+        {workbenchRailItems.map((item) => {
+          const Icon = item.icon
+          const isActive =
+            item.key === "conversations"
+              ? pathname === "/workbench" || pathname?.startsWith("/workbench/")
+              : pathname === item.href || pathname?.startsWith(`${item.href}/`)
+
+          return (
+            <Link
+              key={item.key}
+              href={item.href}
+              aria-label={t(item.titleKey)}
+              className={cn(
+                "flex h-13 w-12 flex-col items-center justify-center gap-1 rounded-lg text-[11px] leading-none text-sidebar-foreground/75 transition-colors hover:bg-sidebar-accent hover:text-sidebar-accent-foreground",
+                isActive &&
+                  "bg-sidebar-primary text-sidebar-primary-foreground hover:bg-sidebar-primary hover:text-sidebar-primary-foreground"
+              )}
+            >
+              <Icon className="size-4" />
+              <span className="max-w-full truncate">{t(item.titleKey)}</span>
+            </Link>
+          )
+        })}
+      </nav>
+    </aside>
+  )
+}
diff --git a/web/e2e/workbench-function.spec.ts b/web/e2e/workbench-function.spec.ts
index 36b1a2f..9f0c42a 100644
--- a/web/e2e/workbench-function.spec.ts
+++ b/web/e2e/workbench-function.spec.ts
@@ -67,7 +67,7 @@ test.describe("support workbench", () => {
     await screenshot(page, "03-workbench-initial");
 
     await expect(page.getByText(/客服工作台|Support Workbench/).first()).toBeVisible();
-    await page.getByRole("button", { name: /贝壳AGENT|Shell Agent/i }).first().click();
+    await page.getByRole("button", { name: /贝壳AGENT|Agent Desk/i }).first().click();
     await expect(page.getByText(/切换工作区|Switch workspace/)).toBeVisible();
     await expect(page.getByRole("menuitem", { name: /管理后台|Admin Dashboard/ })).toBeVisible();
     await page.waitForTimeout(300);
@@ -79,7 +79,7 @@ test.describe("support workbench", () => {
     await screenshot(page, "05-dashboard-after-switch");
     await expect(page.getByText(/管理后台|Admin Dashboard/).first()).toBeVisible();
 
-    await page.getByRole("button", { name: /贝壳AGENT|Shell Agent/i }).first().click();
+    await page.getByRole("button", { name: /贝壳AGENT|Agent Desk/i }).first().click();
     await expect(page.getByRole("menuitem", { name: /客服工作台|Support Workbench/ })).toBeVisible();
     await page.waitForTimeout(300);
     await screenshot(page, "06-dashboard-switcher-open");
diff --git a/web/messages/en-US.json b/web/messages/en-US.json
index 77fa696..810241c 100644
--- a/web/messages/en-US.json
+++ b/web/messages/en-US.json
@@ -1,6 +1,6 @@
 {
   "app": {
-    "brand": "Shell Agent",
+    "brand": "Agent Desk",
     "metadataTitle": "AI Customer Support Admin",
     "metadataDescription": "AI Customer Support Admin"
   },