diff --git a/packages/core/permissions/use-resource-permissions.ts b/packages/core/permissions/use-resource-permissions.ts
index df3ef3cac6..02fa1285be 100644
--- a/packages/core/permissions/use-resource-permissions.ts
+++ b/packages/core/permissions/use-resource-permissions.ts
@@ -34,15 +34,21 @@ export function useAgentPermissions(
 ): {
   canEdit: Decision;
   canAssign: Decision;
+  isLoading: boolean;
 } {
-  const { userId, role } = useCurrentMember(wsId);
+  const { userId, role, isLoading } = useCurrentMember(wsId);
   const ctx = { userId, role };
+  // While the member query is in flight, `role` is null and the rules below
+  // would misread a legitimate member as denied (e.g. `not_member` for a
+  // public_to+workspace agent). Callers with always-clickable affordances
+  // must treat `isLoading` as "undetermined", not as a deny.
   if (agent === null) {
-    return { canEdit: PENDING, canAssign: PENDING };
+    return { canEdit: PENDING, canAssign: PENDING, isLoading };
   }
   return {
     canEdit: canEditAgent(agent, ctx),
     canAssign: canAssignAgentToIssue(agent, ctx),
+    isLoading,
   };
 }
 
diff --git a/packages/views/agents/components/agent-detail-page.test.tsx b/packages/views/agents/components/agent-detail-page.test.tsx
index 0e153d969b..27fe4073c3 100644
--- a/packages/views/agents/components/agent-detail-page.test.tsx
+++ b/packages/views/agents/components/agent-detail-page.test.tsx
@@ -29,6 +29,9 @@ vi.mock("./agent-presence-indicator", () => ({
 
 const agentsRef = vi.hoisted(() => ({ current: [] as unknown[] }));
 const membersRef = vi.hoisted(() => ({ current: [] as unknown[] }));
+// When set, the member query never resolves — the "membership still loading"
+// window in which the DM decision is undetermined.
+const membersPendingRef = vi.hoisted(() => ({ current: false }));
 const currentUserRef = vi.hoisted(() => ({
   current: { id: "user-1" } as { id: string } | null,
 }));
@@ -48,7 +51,10 @@ vi.mock("@multica/core/workspace/queries", () => ({
   }),
   memberListOptions: (wsId: string) => ({
     queryKey: ["members", wsId],
-    queryFn: () => Promise.resolve(membersRef.current),
+    queryFn: () =>
+      membersPendingRef.current
+        ? new Promise(() => {})
+        : Promise.resolve(membersRef.current),
   }),
   workspaceKeys: { agents: (wsId: string) => ["agents", wsId] },
 }));
@@ -152,6 +158,7 @@ beforeEach(() => {
   vi.clearAllMocks();
   currentUserRef.current = { id: "user-1" };
   membersRef.current = [{ user_id: "user-1", role: "member" }];
+  membersPendingRef.current = false;
   agentsRef.current = [baseAgent];
 });
 
@@ -179,6 +186,19 @@ describe("AgentDetailPage DM button", () => {
     expect(push).not.toHaveBeenCalled();
   });
 
+  it("disables DM while membership is resolving instead of toasting a false deny", async () => {
+    // Review P2: a pending member query collapses role to null, which the
+    // rules read as not_member — a legitimate public_to+workspace member
+    // would get a wrong "no access" toast. Undetermined must disable, not deny.
+    membersPendingRef.current = true;
+    const { push } = renderPage();
+    const dm = await screen.findByRole("button", { name: "DM" });
+    expect(dm).toBeDisabled();
+    fireEvent.click(dm);
+    expect(mockToastError).not.toHaveBeenCalled();
+    expect(push).not.toHaveBeenCalled();
+  });
+
   it("hides the DM button on an archived agent", async () => {
     agentsRef.current = [
       { ...baseAgent, archived_at: "2026-06-01T00:00:00Z" },
diff --git a/packages/views/agents/components/agent-detail-page.tsx b/packages/views/agents/components/agent-detail-page.tsx
index a457665f81..8e7bb6ffb2 100644
--- a/packages/views/agents/components/agent-detail-page.tsx
+++ b/packages/views/agents/components/agent-detail-page.tsx
@@ -107,7 +107,11 @@ export function AgentDetailPage({ agentId }: AgentDetailPageProps) {
   // signature handles the not-found / loading case internally so the early
   // returns below don't violate the rules of hooks. Backend gates archive
   // and restore identically to edit, so a single `canEdit` covers them all.
-  const { canAssign, canEdit } = useAgentPermissions(agent, wsId);
+  const {
+    canAssign,
+    canEdit,
+    isLoading: permissionsLoading,
+  } = useAgentPermissions(agent, wsId);
 
   const [confirmArchive, setConfirmArchive] = useState(false);
 
@@ -256,8 +260,11 @@ export function AgentDetailPage({ agentId }: AgentDetailPageProps) {
 
   // Chat shares the invocation gate with assignment (MUL-3963): starting a
   // chat triggers agent runs. The button stays visible either way — a denied
-  // click explains itself instead of the affordance silently missing.
+  // click explains itself instead of the affordance silently missing. While
+  // membership is still resolving the decision is undetermined, so the button
+  // is disabled rather than toasting a false "no access" at a real member.
   const handleDm = () => {
+    if (permissionsLoading) return;
     if (!canAssign.allowed) {
       toast.error(t(($) => $.detail.dm_no_permission_toast));
       return;
@@ -274,6 +281,7 @@ export function AgentDetailPage({ agentId }: AgentDetailPageProps) {
         backHref={paths.agents()}
         canAssign={canAssign.allowed}
         canArchive={canEdit.allowed}
+        dmPending={permissionsLoading}
         onDm={handleDm}
         onAssign={() =>
           useModalStore
@@ -380,6 +388,7 @@ function DetailHeader({
   backHref,
   canAssign,
   canArchive,
+  dmPending,
   onDm,
   onAssign,
   onArchive,
@@ -390,6 +399,7 @@ function DetailHeader({
   backHref: string;
   canAssign: boolean;
   canArchive: boolean;
+  dmPending: boolean;
   onDm: () => void;
   onAssign: () => void;
   onArchive: () => void;
@@ -457,6 +467,7 @@ function DetailHeader({
                 type="button"
                 variant="outline"
                 size="sm"
+                disabled={dmPending}
                 onClick={onDm}
               >
                 <MessageSquare className="h-4 w-4" aria-hidden="true" />
diff --git a/packages/views/chat/chat-page.test.tsx b/packages/views/chat/chat-page.test.tsx
index 8018bef9ac..8c14cb7103 100644
--- a/packages/views/chat/chat-page.test.tsx
+++ b/packages/views/chat/chat-page.test.tsx
@@ -1,7 +1,8 @@
 // @vitest-environment jsdom
 
+import { StrictMode } from "react";
 import { describe, it, expect, vi, beforeEach } from "vitest";
-import { render, screen } from "@testing-library/react";
+import { fireEvent, render, screen } from "@testing-library/react";
 import type { Agent } from "@multica/core/types";
 import { I18nProvider } from "@multica/core/i18n/react";
 import enCommon from "../locales/en/common.json";
@@ -15,7 +16,9 @@ const TEST_RESOURCES = { en: { common: enCommon, chat: enChat } };
 
 // These tests target the page-level URL wiring (`?agent=` / `?session=`), so
 // the conversation internals are stubbed and the controller is replaced with
-// a ref-driven fake the tests can steer.
+// a ref-driven fake the tests can steer. The thread-list stub stays
+// interactive: selecting a thread is the user action that must supersede a
+// pending `?agent=` intent.
 vi.mock("./components/chat-message-list", () => ({
   ChatMessageList: () => <div>chat-message-list</div>,
   ChatMessageSkeleton: () => <div>chat-message-skeleton</div>,
@@ -24,7 +27,18 @@ vi.mock("./components/chat-input", () => ({
   ChatInput: () => <div>chat-input</div>,
 }));
 vi.mock("./components/chat-thread-list", () => ({
-  ChatThreadList: () => <div>chat-thread-list</div>,
+  ChatThreadList: ({
+    onSelectSession,
+  }: {
+    onSelectSession: (s: { id: string; agent_id: string }) => void;
+  }) => (
+    <button
+      type="button"
+      onClick={() => onSelectSession({ id: "session-9", agent_id: "agent-9" })}
+    >
+      select-thread
+    </button>
+  ),
 }));
 vi.mock("./components/chat-session-header", () => ({
   ChatSessionHeader: () => <div>chat-session-header</div>,
@@ -63,16 +77,34 @@ vi.mock("@multica/core/paths", () => ({
   useWorkspacePaths: () => ({ chat: () => "/acme/chat" }),
 }));
 
+// The store mock is REACTIVE like real Zustand: setActiveSession replaces the
+// snapshot and notifies subscribers, and the controller mock subscribes via
+// useSyncExternalStore. A plain mutable ref would let React bail out of
+// committing the post-effect re-render (no React state changed), leaving the
+// DOM frozen on the first commit — which silently hides exactly the class of
+// bug the StrictMode regression below exists to catch.
 const storeRef = vi.hoisted(() => ({
   current: { activeSessionId: null as string | null },
 }));
+const storeListeners = vi.hoisted(() => new Set<() => void>());
 const availableAgentsRef = vi.hoisted(() => ({ current: [] as Agent[] }));
+const agentsSettledRef = vi.hoisted(() => ({ current: true }));
 const mockStartNewChat = vi.hoisted(() => vi.fn());
+const mockToastError = vi.hoisted(() => vi.fn());
 const mockSetActiveSession = vi.hoisted(() =>
   vi.fn((id: string | null) => {
-    storeRef.current.activeSessionId = id;
+    storeRef.current = { ...storeRef.current, activeSessionId: id };
+    storeListeners.forEach((l) => l());
   }),
 );
+const subscribeToStore = vi.hoisted(() => (cb: () => void) => {
+  storeListeners.add(cb);
+  return () => storeListeners.delete(cb);
+});
+
+vi.mock("sonner", () => ({
+  toast: { success: vi.fn(), error: mockToastError },
+}));
 
 vi.mock("@multica/core/chat", () => ({
   useChatStore: Object.assign(
@@ -82,45 +114,52 @@ vi.mock("@multica/core/chat", () => ({
   ),
 }));
 
-vi.mock("./components/use-chat-controller", () => ({
-  useChatController: () => ({
-    wsId: "ws-1",
-    user: { id: "user-1" },
-    agents: availableAgentsRef.current,
-    availableAgents: availableAgentsRef.current,
-    sessions: [],
-    activeSessionId: storeRef.current.activeSessionId,
-    selectedAgentId: null,
-    currentSession: null,
-    isSessionArchived: false,
-    isAgentArchived: false,
-    activeAgent: availableAgentsRef.current[0] ?? null,
-    noAgent: false,
-    availability: "online",
-    messages: [],
-    pendingTask: null,
-    pendingTaskId: null,
-    showSkeleton: false,
-    hasMessages: false,
-    firstItemIndex: 0,
-    hasOlderMessages: false,
-    isFetchingOlderMessages: false,
-    fetchOlderMessages: vi.fn(),
-    restoreDraftRequest: null,
-    handleRestoreDraftConsumed: vi.fn(),
-    focusInputRequest: 0,
-    handleSend: vi.fn(),
-    handleStop: vi.fn(),
-    handleUploadFile: vi.fn(),
-    handleNewChat: vi.fn(),
-    handleStartNewChat: mockStartNewChat,
-    handleSelectSession: vi.fn(),
-    advanceSelectionAfterArchive: vi.fn(),
-    archiveSession: vi.fn(),
-    setActiveSession: mockSetActiveSession,
-    setSelectedAgentId: vi.fn(),
-  }),
-}));
+vi.mock("./components/use-chat-controller", async () => {
+  const { useSyncExternalStore } = await import("react");
+  return {
+    useChatController: () => ({
+      wsId: "ws-1",
+      user: { id: "user-1" },
+      agents: availableAgentsRef.current,
+      availableAgents: availableAgentsRef.current,
+      agentsSettled: agentsSettledRef.current,
+      sessions: [],
+      activeSessionId: useSyncExternalStore(
+        subscribeToStore,
+        () => storeRef.current,
+      ).activeSessionId,
+      selectedAgentId: null,
+      currentSession: null,
+      isSessionArchived: false,
+      isAgentArchived: false,
+      activeAgent: availableAgentsRef.current[0] ?? null,
+      noAgent: false,
+      availability: "online",
+      messages: [],
+      pendingTask: null,
+      pendingTaskId: null,
+      showSkeleton: false,
+      hasMessages: false,
+      firstItemIndex: 0,
+      hasOlderMessages: false,
+      isFetchingOlderMessages: false,
+      fetchOlderMessages: vi.fn(),
+      restoreDraftRequest: null,
+      handleRestoreDraftConsumed: vi.fn(),
+      focusInputRequest: 0,
+      handleSend: vi.fn(),
+      handleStop: vi.fn(),
+      handleUploadFile: vi.fn(),
+      handleNewChat: vi.fn(),
+      handleStartNewChat: mockStartNewChat,
+      handleSelectSession: vi.fn(),
+      advanceSelectionAfterArchive: vi.fn(),
+      archiveSession: vi.fn(),
+      setActiveSession: mockSetActiveSession,
+      setSelectedAgentId: vi.fn(),
+    }),
+  };
+});
 
 import { ChatPage } from "./chat-page";
 
@@ -149,7 +188,9 @@ const agent: Agent = {
   archived_by: null,
 };
 
-function renderPage(search: string) {
+const NO_ACCESS_MSG = "You don't have access to chat with this agent.";
+
+function renderPage(search: string, { strict = false } = {}) {
   const replace = vi.fn();
   const navigation: NavigationAdapter = {
     push: vi.fn(),
@@ -161,13 +202,16 @@ function renderPage(search: string) {
   };
   // A fresh element per render — reusing one element object lets React bail
   // out of re-rendering, which would make the rerender-based tests vacuous.
-  const makeUi = () => (
-    <I18nProvider locale="en" resources={TEST_RESOURCES}>
-      <NavigationProvider value={navigation}>
-        <ChatPage />
-      </NavigationProvider>
-    </I18nProvider>
-  );
+  const makeUi = () => {
+    const page = (
+      <I18nProvider locale="en" resources={TEST_RESOURCES}>
+        <NavigationProvider value={navigation}>
+          <ChatPage />
+        </NavigationProvider>
+      </I18nProvider>
+    );
+    return strict ? <StrictMode>{page}</StrictMode> : page;
+  };
   const view = render(makeUi());
   return { replace, rerender: () => view.rerender(makeUi()) };
 }
@@ -175,7 +219,9 @@ function renderPage(search: string) {
 beforeEach(() => {
   vi.clearAllMocks();
   storeRef.current = { activeSessionId: null };
+  storeListeners.clear();
   availableAgentsRef.current = [agent];
+  agentsSettledRef.current = true;
 });
 
 describe("ChatPage ?agent= deep link", () => {
@@ -199,22 +245,65 @@ describe("ChatPage ?agent= deep link", () => {
     expect(mockStartNewChat).toHaveBeenCalledTimes(1);
   });
 
+  it("stays pending without a toast while the agent/member queries load", () => {
+    availableAgentsRef.current = [];
+    agentsSettledRef.current = false;
+    const { replace } = renderPage("agent=agent-1");
+    expect(mockStartNewChat).not.toHaveBeenCalled();
+    expect(mockToastError).not.toHaveBeenCalled();
+    expect(replace).not.toHaveBeenCalled();
+  });
+
   it("waits for the agent list to resolve before consuming the intent", () => {
     availableAgentsRef.current = [];
+    agentsSettledRef.current = false;
     const { replace, rerender } = renderPage("agent=agent-1");
     expect(mockStartNewChat).not.toHaveBeenCalled();
-    expect(replace).not.toHaveBeenCalled();
     availableAgentsRef.current = [agent];
+    agentsSettledRef.current = true;
     rerender();
     expect(mockStartNewChat).toHaveBeenCalledWith(agent);
     expect(replace).toHaveBeenCalledWith("/acme/chat");
   });
 
-  it("ignores an agent id that is not chat-able and keeps the default view", () => {
-    availableAgentsRef.current = [agent];
-    const { replace } = renderPage("agent=other-agent");
+  it("toasts and strips the param once the list settles without the agent", () => {
+    // Revoked access, archived agent, or a bad id: a settled miss must
+    // explain itself and consume the intent so a later refetch that surfaces
+    // the agent cannot auto-start a chat without a fresh click.
+    const { replace, rerender } = renderPage("agent=other-agent");
     expect(mockStartNewChat).not.toHaveBeenCalled();
-    expect(replace).not.toHaveBeenCalled();
+    expect(mockToastError).toHaveBeenCalledWith(NO_ACCESS_MSG);
+    expect(replace).toHaveBeenCalledWith("/acme/chat");
     expect(screen.queryByText("chat-input")).not.toBeInTheDocument();
+    rerender();
+    expect(mockToastError).toHaveBeenCalledTimes(1);
+  });
+
+  it("lets an explicit thread selection supersede a still-pending intent", () => {
+    // Deferred-intent race (review P1): the user picks a thread while the
+    // agent/member queries are still loading; when they settle, the stale
+    // deep link must NOT fire and clobber that selection.
+    availableAgentsRef.current = [];
+    agentsSettledRef.current = false;
+    const { replace, rerender } = renderPage("agent=agent-1");
+    fireEvent.click(screen.getByRole("button", { name: "select-thread" }));
+    availableAgentsRef.current = [agent];
+    agentsSettledRef.current = true;
+    rerender();
+    expect(mockStartNewChat).not.toHaveBeenCalled();
+    expect(mockToastError).not.toHaveBeenCalled();
+    expect(replace).not.toHaveBeenCalled();
+  });
+
+  it("opens the compose pane under StrictMode with a persisted previous session", () => {
+    // StrictMode replays mount effects with render-captured values (review
+    // P2): the composingNew reset must read the LIVE store value, or the
+    // stale persisted session re-closes the pane the intent just opened —
+    // while the consumed-intent guard rightly refuses to fire again.
+    storeRef.current = { activeSessionId: "old-session" };
+    const { replace } = renderPage("agent=agent-1", { strict: true });
+    expect(mockStartNewChat).toHaveBeenCalledTimes(1);
+    expect(replace).toHaveBeenCalledWith("/acme/chat");
+    expect(screen.getByText("chat-input")).toBeInTheDocument();
   });
 });
diff --git a/packages/views/chat/chat-page.tsx b/packages/views/chat/chat-page.tsx
index 0fa9c8f49c..102a6cd073 100644
--- a/packages/views/chat/chat-page.tsx
+++ b/packages/views/chat/chat-page.tsx
@@ -3,6 +3,7 @@
 import { useEffect, useRef, useState } from "react";
 import { useDefaultLayout } from "react-resizable-panels";
 import { ArrowLeft, MessageSquare } from "lucide-react";
+import { toast } from "sonner";
 import { Button } from "@multica/ui/components/ui/button";
 import {
   ResizablePanelGroup,
@@ -62,7 +63,12 @@ export function ChatPage() {
   // real session takes over.
   const [composingNew, setComposingNew] = useState(false);
   useEffect(() => {
-    if (c.activeSessionId) setComposingNew(false);
+    // Read the LIVE store value for the same reason as the session sync
+    // effects below: under StrictMode's double-invoke this effect replays
+    // with the render-captured snapshot, and a stale non-null session (a
+    // persisted chat the URL→store effect already cleared) would revert the
+    // composingNew=true that the later `?agent=` intent effect just set.
+    if (useChatStore.getState().activeSessionId) setComposingNew(false);
   }, [c.activeSessionId]);
 
   // Two-way sync between the URL (`?session=`) and the chat store's
@@ -98,7 +104,20 @@ export function ChatPage() {
     id: "multica_chat_layout",
   });
 
+  // `?agent=` intent bookkeeping. The ref holds the param value already
+  // consumed (or superseded) so the effect below fires at most once per deep
+  // link — it also bridges the async window between replace() and the
+  // searchParams actually dropping the param. Any explicit user action must
+  // supersede a still-pending intent: agent/member queries can resolve late,
+  // and a deferred intent firing after the user picked a thread (or started
+  // another chat) would clobber that choice.
+  const consumedAgentIntent = useRef<string | null>(null);
+  const supersedeAgentIntent = () => {
+    if (urlAgent) consumedAgentIntent.current = urlAgent;
+  };
+
   const handleSelect = (session: ChatSession) => {
+    supersedeAgentIntent();
     c.handleSelectSession(session);
     setComposingNew(false);
   };
@@ -109,6 +128,7 @@ export function ChatPage() {
   // the list, which reads more naturally than being thrown into an unrelated
   // conversation full-screen. Archiving any other chat leaves the view put.
   const handleArchive = (session: ChatSession) => {
+    supersedeAgentIntent();
     if (session.id === c.activeSessionId) {
       if (isMobile) {
         c.setActiveSession(null);
@@ -121,6 +141,9 @@ export function ChatPage() {
   };
 
   const startNewChat = (agent: Agent | null) => {
+    // A manual ⊕ pick outranks a pending deep link; when called FROM the
+    // intent effect the ref is already set to this param, so this is a no-op.
+    supersedeAgentIntent();
     if (agent) c.handleStartNewChat(agent);
     else c.handleNewChat();
     setComposingNew(true);
@@ -131,11 +154,11 @@ export function ChatPage() {
   // agent. The permission-filtered agent list loads async, so the intent is
   // consumed on the render where the agent resolves, then the param is
   // stripped so refresh / the session sync above don't replay it. The ref
-  // guards the window between replace() and the searchParams actually
-  // updating; it resets once the param is gone so a later identical deep link
-  // fires again. An id that never resolves (access revoked or agent archived
-  // in the meantime) is ignored and the page stays on its default view.
-  const consumedAgentIntent = useRef<string | null>(null);
+  // resets once the param is gone so a later identical deep link fires again.
+  // A settled miss (access revoked, agent archived, bad id) is a denial: it
+  // explains itself with a toast and consumes the intent so a later refetch
+  // that surfaces the agent cannot start a chat without a fresh click. While
+  // the queries are still loading the intent simply stays pending.
   useEffect(() => {
     if (!urlAgent) {
       consumedAgentIntent.current = null;
@@ -143,12 +166,19 @@ export function ChatPage() {
     }
     if (consumedAgentIntent.current === urlAgent) return;
     const agent = c.availableAgents.find((a) => a.id === urlAgent);
-    if (!agent) return;
-    consumedAgentIntent.current = urlAgent;
-    startNewChat(agent);
-    replace(wsPaths.chat());
+    if (agent) {
+      consumedAgentIntent.current = urlAgent;
+      startNewChat(agent);
+      replace(wsPaths.chat());
+      return;
+    }
+    if (c.agentsSettled) {
+      consumedAgentIntent.current = urlAgent;
+      toast.error(t(($) => $.page.agent_link_no_access));
+      replace(wsPaths.chat());
+    }
     // eslint-disable-next-line react-hooks/exhaustive-deps -- consume when the URL param or the resolving agent list changes
-  }, [urlAgent, c.availableAgents]);
+  }, [urlAgent, c.availableAgents, c.agentsSettled]);
 
   const newChatButton = (
     <NewChatButton
diff --git a/packages/views/chat/components/use-chat-controller.ts b/packages/views/chat/components/use-chat-controller.ts
index cc5839fef2..74aedea202 100644
--- a/packages/views/chat/components/use-chat-controller.ts
+++ b/packages/views/chat/components/use-chat-controller.ts
@@ -203,8 +203,12 @@ export function useChatController(opts?: { isActive?: boolean }) {
   const setActiveSession = useChatStore((s) => s.setActiveSession);
   const setSelectedAgentId = useChatStore((s) => s.setSelectedAgentId);
   const user = useAuthStore((s) => s.user);
-  const { data: agents = [] } = useQuery(agentListOptions(wsId));
-  const { data: members = [] } = useQuery(memberListOptions(wsId));
+  const { data: agents = [], isSuccess: agentsLoaded } = useQuery(
+    agentListOptions(wsId),
+  );
+  const { data: members = [], isSuccess: membersLoaded } = useQuery(
+    memberListOptions(wsId),
+  );
   const { data: sessions = [], isSuccess: sessionsLoaded } = useQuery(
     chatSessionsOptions(wsId),
   );
@@ -265,6 +269,13 @@ export function useChatController(opts?: { isActive?: boolean }) {
   const availableAgents = agents.filter(
     (a) => !a.archived_at && canAssignAgent(a, user?.id, memberRole),
   );
+  // `availableAgents` is only trustworthy once BOTH queries above succeeded:
+  // the permission filter reads the member role, so agents-without-members
+  // misreports a public_to agent as unavailable. Consumers that must tell
+  // "still loading" apart from "settled and not available" (the `?agent=`
+  // deep link) gate on this instead of sniffing list emptiness. Query errors
+  // deliberately keep this false — a failed fetch is not a permission verdict.
+  const agentsSettled = agentsLoaded && membersLoaded;
 
   // The agent bound to the OPEN session, resolved from the full agent list
   // (archived included, since agentListOptions passes include_archived). An
@@ -655,6 +666,7 @@ export function useChatController(opts?: { isActive?: boolean }) {
     user,
     agents,
     availableAgents,
+    agentsSettled,
     sessions,
     activeSessionId,
     selectedAgentId,
diff --git a/packages/views/locales/en/chat.json b/packages/views/locales/en/chat.json
index 0dde77d11d..1aae491205 100644
--- a/packages/views/locales/en/chat.json
+++ b/packages/views/locales/en/chat.json
@@ -1,7 +1,8 @@
 {
   "page": {
     "title": "Chat",
-    "select_prompt": "Pick a conversation, or start a new one with +"
+    "select_prompt": "Pick a conversation, or start a new one with +",
+    "agent_link_no_access": "You don't have access to chat with this agent."
   },
   "fab": {
     "running": "Multica is working...",
diff --git a/packages/views/locales/ja/chat.json b/packages/views/locales/ja/chat.json
index 3f77c7bf2f..a945a93991 100644
--- a/packages/views/locales/ja/chat.json
+++ b/packages/views/locales/ja/chat.json
@@ -1,7 +1,8 @@
 {
   "page": {
     "title": "チャット",
-    "select_prompt": "会話を選ぶか、＋ で新規作成してください"
+    "select_prompt": "会話を選ぶか、＋ で新規作成してください",
+    "agent_link_no_access": "このエージェントとチャットする権限がありません。"
   },
   "fab": {
     "running": "Multica が作業中です...",
diff --git a/packages/views/locales/ko/chat.json b/packages/views/locales/ko/chat.json
index 7128b58a9f..7ac9974f32 100644
--- a/packages/views/locales/ko/chat.json
+++ b/packages/views/locales/ko/chat.json
@@ -1,7 +1,8 @@
 {
   "page": {
     "title": "채팅",
-    "select_prompt": "대화를 선택하거나 +로 새로 시작하세요"
+    "select_prompt": "대화를 선택하거나 +로 새로 시작하세요",
+    "agent_link_no_access": "이 에이전트와 채팅할 권한이 없습니다."
   },
   "fab": {
     "running": "Multica가 작업 중입니다...",
diff --git a/packages/views/locales/zh-Hans/chat.json b/packages/views/locales/zh-Hans/chat.json
index 3647b1f1f1..b7afa89e56 100644
--- a/packages/views/locales/zh-Hans/chat.json
+++ b/packages/views/locales/zh-Hans/chat.json
@@ -1,7 +1,8 @@
 {
   "page": {
     "title": "聊天",
-    "select_prompt": "选择一个对话，或点 + 新建"
+    "select_prompt": "选择一个对话，或点 + 新建",
+    "agent_link_no_access": "你没有权限与该智能体聊天。"
   },
   "fab": {
     "running": "Multica 正在工作...",