diff --git a/packages/views/chat/components/chat-thread-list.test.tsx b/packages/views/chat/components/chat-thread-list.test.tsx
deleted file mode 100644
index 372c6529e5..0000000000
--- a/packages/views/chat/components/chat-thread-list.test.tsx
+++ /dev/null
@@ -1,166 +0,0 @@
-import { describe, expect, it, vi } from "vitest";
-import { render, screen } from "@testing-library/react";
-import { QueryClient, QueryClientProvider } from "@tanstack/react-query";
-import { I18nProvider } from "@multica/core/i18n/react";
-import { chatKeys } from "@multica/core/chat/queries";
-import type { Agent, ChatSession } from "@multica/core/types";
-import enChat from "../../locales/en/chat.json";
-
-// ActorAvatar fetches agent presence/photo — stub it to a marker span so the
-// list renders without a QueryClient round-trip, and so we can assert the
-// archived dimming class lands on the avatar.
-vi.mock("../../common/actor-avatar", () => ({
-  ActorAvatar: ({ actorId, className }: { actorId: string; className?: string }) => (
-    <span data-testid={`avatar-${actorId}`} className={className} />
-  ),
-}));
-
-vi.mock("@multica/core/hooks", () => ({
-  useWorkspaceId: () => "ws-1",
-}));
-
-vi.mock("@multica/core/agents", () => ({
-  useWorkspacePresenceMap: () => ({ byAgent: new Map() }),
-}));
-
-vi.mock("@multica/core/chat", () => {
-  const state = { setActiveSession: vi.fn() };
-  return {
-    useChatStore: Object.assign(
-      (selector?: (s: typeof state) => unknown) => (selector ? selector(state) : state),
-      { getState: () => state },
-    ),
-  };
-});
-
-vi.mock("@multica/core/chat/mutations", () => ({
-  useDeleteChatSession: () => ({ mutate: vi.fn(), isPending: false }),
-  useSetChatSessionPinned: () => ({ mutate: vi.fn() }),
-}));
-
-import { ChatThreadList } from "./chat-thread-list";
-
-const TEST_RESOURCES = { en: { chat: enChat } };
-
-function makeAgent(overrides: Partial<Agent> & Pick<Agent, "id" | "name">): Agent {
-  return {
-    workspace_id: "ws-1",
-    runtime_id: "runtime-1",
-    owner_id: "user-1",
-    description: "",
-    instructions: "",
-    avatar_url: null,
-    runtime_mode: "local",
-    runtime_config: {},
-    custom_args: [],
-    visibility: "workspace",
-    permission_mode: "public_to",
-    invocation_targets: [{ target_type: "workspace", target_id: null }],
-    status: "idle",
-    max_concurrent_tasks: 1,
-    model: "sonnet",
-    skills: [],
-    created_at: new Date(0).toISOString(),
-    updated_at: new Date(0).toISOString(),
-    archived_at: null,
-    archived_by: null,
-    ...overrides,
-  } as Agent;
-}
-
-function makeSession(overrides: Partial<ChatSession> & Pick<ChatSession, "id" | "agent_id">): ChatSession {
-  return {
-    workspace_id: "ws-1",
-    title: "A conversation",
-    status: "active",
-    pinned: false,
-    unread_count: 0,
-    has_unread: false,
-    last_message: {
-      content: "hello there",
-      role: "assistant",
-      created_at: "2026-07-08T00:00:00Z",
-      failure_reason: null,
-    },
-    created_at: "2026-07-08T00:00:00Z",
-    updated_at: "2026-07-08T00:00:00Z",
-    ...overrides,
-  } as ChatSession;
-}
-
-function renderList(sessions: ChatSession[], agents: Agent[]) {
-  const qc = new QueryClient();
-  qc.setQueryData(chatKeys.pendingTasks("ws-1"), { tasks: [] });
-  return render(
-    <I18nProvider locale="en" resources={TEST_RESOURCES}>
-      <QueryClientProvider client={qc}>
-        <ChatThreadList
-          sessions={sessions}
-          agents={agents}
-          activeSessionId={null}
-          onSelectSession={vi.fn()}
-        />
-      </QueryClientProvider>
-    </I18nProvider>,
-  );
-}
-
-describe("ChatThreadList archived-agent handling (MUL-4265)", () => {
-  it("marks a session whose agent is archived and dims its avatar", () => {
-    const archived = makeAgent({
-      id: "agent-archived",
-      name: "Retired Bot",
-      archived_at: "2026-07-01T00:00:00Z",
-    });
-    renderList(
-      [makeSession({ id: "s-1", agent_id: "agent-archived", title: "Old chat" })],
-      [archived],
-    );
-
-    // The "Archived" tag renders on the row.
-    expect(screen.getByText(enChat.list.archived)).toBeInTheDocument();
-    // The avatar is desaturated/dimmed.
-    expect(screen.getByTestId("avatar-agent-archived").className).toContain("grayscale");
-  });
-
-  it("does not mark a session whose agent is active", () => {
-    const active = makeAgent({ id: "agent-active", name: "Active Bot" });
-    renderList(
-      [makeSession({ id: "s-2", agent_id: "agent-active", title: "Live chat" })],
-      [active],
-    );
-
-    expect(screen.queryByText(enChat.list.archived)).not.toBeInTheDocument();
-    expect(screen.getByTestId("avatar-agent-active").className).not.toContain("grayscale");
-  });
-
-  it("suppresses the live 'typing' indicator for an archived agent even with a pending task", () => {
-    const qc = new QueryClient();
-    // A stray pending task on the archived agent's session must NOT render as
-    // 'typing…' — a retired agent can never be running.
-    qc.setQueryData(chatKeys.pendingTasks("ws-1"), {
-      tasks: [{ task_id: "t-1", chat_session_id: "s-3", status: "running" }],
-    });
-    const archived = makeAgent({
-      id: "agent-archived",
-      name: "Retired Bot",
-      archived_at: "2026-07-01T00:00:00Z",
-    });
-    render(
-      <I18nProvider locale="en" resources={TEST_RESOURCES}>
-        <QueryClientProvider client={qc}>
-          <ChatThreadList
-            sessions={[makeSession({ id: "s-3", agent_id: "agent-archived" })]}
-            agents={[archived]}
-            activeSessionId={null}
-            onSelectSession={vi.fn()}
-          />
-        </QueryClientProvider>
-      </I18nProvider>,
-    );
-
-    expect(screen.queryByText(enChat.list.typing)).not.toBeInTheDocument();
-    // Falls back to the last-message preview instead.
-    expect(screen.getByText(/hello there/)).toBeInTheDocument();
-  });
-});
diff --git a/packages/views/chat/components/chat-thread-list.tsx b/packages/views/chat/components/chat-thread-list.tsx
index 9af987220c..870acab85c 100644
--- a/packages/views/chat/components/chat-thread-list.tsx
+++ b/packages/views/chat/components/chat-thread-list.tsx
@@ -2,7 +2,7 @@
 
 import { useEffect, useMemo, useState } from "react";
 import { useQuery, useQueryClient } from "@tanstack/react-query";
-import { Archive, Clock, Loader2, Pin, PinOff, Square, Trash2 } from "lucide-react";
+import { Clock, Loader2, Pin, PinOff, Square, Trash2 } from "lucide-react";
 import { cn } from "@multica/ui/lib/utils";
 import { useWorkspaceId } from "@multica/core/hooks";
 import { useWorkspacePresenceMap } from "@multica/core/agents";
@@ -145,12 +145,8 @@ export function ChatThreadList({
   const renderRow = (session: ChatSession) => {
     const isCurrent = session.id === activeSessionId;
     const agent = agentById.get(session.agent_id) ?? null;
-    // A retired agent can't take new work — the conversation is read-only.
-    // We keep the row (history stays reachable) but mark it and suppress the
-    // live "typing…/waiting" indicators, which can never apply here.
-    const agentArchived = !!agent?.archived_at;
     const pendingTask = pendingTaskBySessionId.get(session.id);
-    const isRunning = !!pendingTask && !agentArchived;
+    const isRunning = !!pendingTask;
     // Only "offline" (definitively long-offline) downgrades typing → waiting.
     // Unknown/loading presence keeps the optimistic "typing…" so we never
     // suppress it just because presence data hasn't landed yet.
@@ -222,17 +218,7 @@ export function ChatThreadList({
         {/* Thin ring keeps photo + fallback avatars reading as the same circle
             (the fallback's faint bg otherwise looks smaller). */}
         {agent ? (
-          <ActorAvatar
-            actorType="agent"
-            actorId={agent.id}
-            size={36}
-            enableHoverCard
-            className={cn(
-              "ring-1 ring-inset ring-border",
-              // Retired agent: desaturate + dim so the row reads as inactive.
-              agentArchived && "opacity-50 grayscale",
-            )}
-          />
+          <ActorAvatar actorType="agent" actorId={agent.id} size={36} enableHoverCard className="ring-1 ring-inset ring-border" />
         ) : (
           <span className="size-9 shrink-0" />
         )}
@@ -249,12 +235,6 @@ export function ChatThreadList({
             <span className={cn("min-w-0 flex-1 truncate text-sm", unread > 0 ? "font-semibold text-foreground" : "font-medium")}>
               {titleText}
             </span>
-            {agentArchived && (
-              <span className="inline-flex shrink-0 items-center gap-0.5 rounded-sm bg-muted px-1 py-px text-[10px] font-medium text-muted-foreground">
-                <Archive className="size-2.5" />
-                {t(($) => $.list.archived)}
-              </span>
-            )}
             <span className="ml-auto shrink-0 text-[11px] text-muted-foreground">{timeText}</span>
           </div>
 
diff --git a/packages/views/locales/en/chat.json b/packages/views/locales/en/chat.json
index a58f0062e4..96c2fb4426 100644
--- a/packages/views/locales/en/chat.json
+++ b/packages/views/locales/en/chat.json
@@ -143,8 +143,7 @@
     "waiting": "Waiting for reply",
     "pin": "Pin",
     "unpin": "Unpin",
-    "pinned": "Pinned",
-    "archived": "Archived"
+    "pinned": "Pinned"
   },
   "header": {
     "view_profile": "View agent profile",
diff --git a/packages/views/locales/ja/chat.json b/packages/views/locales/ja/chat.json
index 573860422a..b5ca5af784 100644
--- a/packages/views/locales/ja/chat.json
+++ b/packages/views/locales/ja/chat.json
@@ -140,8 +140,7 @@
     "waiting": "返信待ち",
     "pin": "ピン留め",
     "unpin": "ピン留めを解除",
-    "pinned": "ピン留め済み",
-    "archived": "アーカイブ済み"
+    "pinned": "ピン留め済み"
   },
   "header": {
     "view_profile": "Agent のプロフィール",
diff --git a/packages/views/locales/ko/chat.json b/packages/views/locales/ko/chat.json
index 8d5f9caf11..eec4860891 100644
--- a/packages/views/locales/ko/chat.json
+++ b/packages/views/locales/ko/chat.json
@@ -140,8 +140,7 @@
     "waiting": "답장 대기 중",
     "pin": "고정",
     "unpin": "고정 해제",
-    "pinned": "고정됨",
-    "archived": "보관됨"
+    "pinned": "고정됨"
   },
   "header": {
     "view_profile": "Agent 프로필 보기",
diff --git a/packages/views/locales/zh-Hans/chat.json b/packages/views/locales/zh-Hans/chat.json
index a44cebdd70..b7c64c7729 100644
--- a/packages/views/locales/zh-Hans/chat.json
+++ b/packages/views/locales/zh-Hans/chat.json
@@ -140,8 +140,7 @@
     "waiting": "等待回复",
     "pin": "置顶",
     "unpin": "取消置顶",
-    "pinned": "已置顶",
-    "archived": "已归档"
+    "pinned": "已置顶"
   },
   "header": {
     "view_profile": "查看 Agent 资料",