diff --git a/web/workspace/deno.json b/web/workspace/deno.json
index fb77d2650..6b4622ebe 100644
--- a/web/workspace/deno.json
+++ b/web/workspace/deno.json
@@ -22,7 +22,7 @@
     "generate:ticket-api": "cd ../.. && cargo run -q -p server-api --example generate_ticket_api_types",
     "check:ticket-api": "cd ../.. && cargo run -q -p server-api --example generate_ticket_api_types -- --check",
     "test:browser:auth": "mkdir -p ../../target/web-ux/tmp && TMPDIR=../../target/web-ux/tmp deno test --config ../../tools/web-ux/deno.json --allow-env --allow-net --allow-read --allow-write --allow-run --allow-sys test/auth-browser/auth-shell.browser.test.ts",
-    "test:browser:entry": "mkdir -p ../../target/web-ux/tmp && TMPDIR=../../target/web-ux/tmp deno test --config ../../tools/web-ux/deno.json --allow-env --allow-net --allow-read --allow-write --allow-run --allow-sys test/auth-browser/entry-shell.browser.test.ts"
+    "test:browser:entry": "mkdir -p ../../target/web-ux/tmp && TMPDIR=../../target/web-ux/tmp deno test --config ../../tools/web-ux/deno.json --allow-env --allow-net --allow-read --allow-write --allow-run --allow-sys test/auth-browser/entry-shell.browser.test.ts test/auth-browser/sidebar-shell.browser.test.ts"
   },
   "imports": {
     "@sveltejs/adapter-static": "npm:@sveltejs/adapter-static@4.0.0",
diff --git a/web/workspace/src/lib/workspace/auth/routes.test.ts b/web/workspace/src/lib/workspace/auth/routes.test.ts
index feee08cd7..46c99678c 100644
--- a/web/workspace/src/lib/workspace/auth/routes.test.ts
+++ b/web/workspace/src/lib/workspace/auth/routes.test.ts
@@ -10,7 +10,22 @@ function assertEquals(
     );
   }
 }
-import { authEntryUrl, loginUrl, safeReturnTo } from "./routes.ts";
+import {
+  authEntryUrl,
+  isAuthPage,
+  isPublicPage,
+  loginUrl,
+  safeReturnTo,
+} from "./routes.ts";
+
+Deno.test("account uses the authenticated app shell, not the standalone auth entry shell", () => {
+  assertEquals(String(isAuthPage("/account")), "false");
+  assertEquals(String(isPublicPage("/account")), "false");
+  for (const path of ["/login", "/register", "/activate", "/login/device"]) {
+    assertEquals(String(isAuthPage(path)), "true", path);
+    assertEquals(String(isPublicPage(path)), "true", path);
+  }
+});
 
 Deno.test("return destination preserves query and fragment only on known app screens", () => {
   for (
diff --git a/web/workspace/src/lib/workspace/auth/routes.ts b/web/workspace/src/lib/workspace/auth/routes.ts
index 5324ee5a6..892a31e6a 100644
--- a/web/workspace/src/lib/workspace/auth/routes.ts
+++ b/web/workspace/src/lib/workspace/auth/routes.ts
@@ -80,8 +80,9 @@ export function isPublicPage(path: string): boolean {
     .includes(path);
 }
 
+// 認証入口は独立したshellを使う。本人用/accountは通常のナビゲーションを残す。
 export function isAuthPage(path: string): boolean {
-  return ["/login", "/register", "/account", "/activate", "/login/device"]
+  return ["/login", "/register", "/activate", "/login/device"]
     .includes(path);
 }
 
diff --git a/web/workspace/src/lib/workspace/console/worker-console.ui.test.ts b/web/workspace/src/lib/workspace/console/worker-console.ui.test.ts
index 84b9d0030..366b41a1a 100644
--- a/web/workspace/src/lib/workspace/console/worker-console.ui.test.ts
+++ b/web/workspace/src/lib/workspace/console/worker-console.ui.test.ts
@@ -1344,7 +1344,7 @@ Deno.test("Root chrome owns global navigation and scoped override slots", async
       globalNavSections.includes("workspace.display_name") &&
       globalNavSections.includes("workspaceHref(workspace.workspace_id)") &&
       rootLayout.includes("observeDeferred(() => data.deferredCatalog") &&
-      rootLayout.includes("workspaces={catalog.data?.accessibleWorkspaces ?? null}") &&
+      rootLayout.includes("workspaces={page.url.pathname === '/' ? null : catalog.data?.accessibleWorkspaces ?? null}") &&
       rootLayout.includes("workspaceError={catalog.data?.workspaceCatalogError}") &&
       rootLayoutLoad.includes("deferredCatalog: settle(") &&
       rootLayoutLoad.includes("listWorkspaces(fetch)") &&
diff --git a/web/workspace/src/lib/workspace/sidebar/GlobalNavSections.svelte b/web/workspace/src/lib/workspace/sidebar/GlobalNavSections.svelte
index 059c3ae44..6ef8f5ba7 100644
--- a/web/workspace/src/lib/workspace/sidebar/GlobalNavSections.svelte
+++ b/web/workspace/src/lib/workspace/sidebar/GlobalNavSections.svelte
@@ -1,7 +1,7 @@
 <script lang="ts">
   import type { WorkspaceCatalogRecord } from "#lib/workspace/api/workspace-catalog.ts";
   import { onMount, untrack } from "svelte";
-  import { loadWhoami } from "#lib/workspace/auth/api.ts";
+  import { browserSession } from '#lib/workspace/auth/session-state.ts';
   import { loadHostingAccess, SESSION_CHANGED_EVENT } from "#lib/workspace/auth/hosting.ts";
 
   let mounted = $state(false);
@@ -12,8 +12,9 @@
     const request = ++accessRequest;
     isAdmin = false;
     try {
-      const whoami = await loadWhoami();
-      if (request !== accessRequest || !whoami.actor) return;
+      // ページが確認したsessionを共有し、Sidebar追加でwhoamiの再取得を増やさない。
+      const session = browserSession.snapshot;
+      if (session.kind !== 'ready' || !session.value.actor) return;
       const access = await loadHostingAccess();
       if (request === accessRequest) isAdmin = access.is_admin;
     } catch {
@@ -24,10 +25,12 @@
   onMount(() => {
     mounted = true;
     const refresh = () => { void refreshAccess(); };
+    const unsubscribe = browserSession.subscribe(refresh);
     window.addEventListener(SESSION_CHANGED_EVENT, refresh);
     window.addEventListener("focus", refresh);
     return () => {
       ++accessRequest;
+      unsubscribe();
       window.removeEventListener(SESSION_CHANGED_EVENT, refresh);
       window.removeEventListener("focus", refresh);
     };
diff --git a/web/workspace/src/lib/workspace/sidebar/hosting-navigation.browser.spec.ts b/web/workspace/src/lib/workspace/sidebar/hosting-navigation.browser.spec.ts
index 695e5841f..d94f83c3f 100644
--- a/web/workspace/src/lib/workspace/sidebar/hosting-navigation.browser.spec.ts
+++ b/web/workspace/src/lib/workspace/sidebar/hosting-navigation.browser.spec.ts
@@ -4,9 +4,11 @@ import { afterEach, expect, test, vi } from "vitest";
 import GlobalNavSections from "./GlobalNavSections.svelte";
 import { authUser } from "#lib/workspace/auth/api.test-fixtures.ts";
 import { notifySessionChanged } from "#lib/workspace/auth/hosting.ts";
+import { browserSession } from "#lib/workspace/auth/session-state.ts";
 
 afterEach(() => {
   cleanup();
+  browserSession.invalidate();
   vi.unstubAllGlobals();
 });
 
@@ -33,6 +35,7 @@ for (
       throw new Error(`Unexpected API ${input}`);
     });
     vi.stubGlobal("fetch", fetcher);
+    await browserSession.refresh();
     render(GlobalNavSections, {
       currentPath: "/hosting/settings",
       workspaces: [],
@@ -45,6 +48,7 @@ for (
       expect(link.getAttribute("href")).toBe("/hosting/settings");
       expect(link.getAttribute("aria-current")).toBe("page");
       actor = false;
+      await browserSession.refresh();
       notifySessionChanged();
       await waitFor(() =>
         expect(screen.queryByRole("link", { name: "Hosting settings" }))
diff --git a/web/workspace/src/routes/+layout.svelte b/web/workspace/src/routes/+layout.svelte
index bbaab7c93..2146edae4 100644
--- a/web/workspace/src/routes/+layout.svelte
+++ b/web/workspace/src/routes/+layout.svelte
@@ -6,7 +6,8 @@
   // MobileはSidebarがHeader下を占有する間mainをinertにし、隠れた内容へfocusを入れない。
   import SessionBoundary from '#lib/workspace/auth/SessionBoundary.svelte';
   import { page } from '$app/state';
-  import { setContext } from 'svelte';
+  import { onMount, setContext } from 'svelte';
+  import { browserSession, type SessionSnapshot } from '#lib/workspace/auth/session-state.ts';
   import { MediaQuery } from 'svelte/reactivity';
   import WorkspaceAlerts from '#lib/workspace/alerts/WorkspaceAlerts.svelte';
   import { dismissWorkspaceAlert, pushWorkspaceAlert } from '#lib/workspace/alerts/store.ts';
@@ -28,8 +29,11 @@
 
   let { children, data }: LayoutProps = $props();
   import { isAuthPage } from '#lib/workspace/auth/routes.ts';
-  // 公開入口・認証・Workspace選択はWorkspace catalogやSidebarに依存しない。
-  const standalone = $derived(page.url.pathname === '/' || page.url.pathname === '/dashboard' || isAuthPage(page.url.pathname) || page.url.pathname.startsWith('/hosting/'));
+  let session = $state<SessionSnapshot>(browserSession.snapshot);
+  onMount(() => browserSession.subscribe((snapshot) => { session = snapshot; }));
+  const authenticated = $derived(session.kind === 'ready' && session.value.session.kind === 'authenticated');
+  // 公開トップのSidebarはログイン確認済みの場合だけ表示する。
+  const standalone = $derived((page.url.pathname === '/' && !authenticated) || page.url.pathname === '/dashboard' || isAuthPage(page.url.pathname) || page.url.pathname.startsWith('/hosting/'));
   const catalog = observeDeferred(() => data.deferredCatalog, () => 'catalog');
   let sidebar = $state<SidebarSnippet | null>(null);
   const sidebarOverrides = createOverrideStack<SidebarSnippet>((activeSidebar) => {
@@ -103,7 +107,10 @@
     {@render children()}
   </main>
 {:else}
-<WorkspaceAlerts />
+<!-- Workspace通知は公開トップや本人設定へ持ち越さない。 -->
+{#if page.url.pathname !== '/' && page.url.pathname !== '/account'}
+  <WorkspaceAlerts />
+{/if}
 <div class="app-shell" class:sidebar-open={sidebarOpen} class:sidebar-hover-mode={sidebarMode === 'hover'}>
   <SidebarFrame
     mode={sidebarMode}
@@ -115,7 +122,7 @@
     <GlobalSidebar
       currentPath={page.url.pathname}
       content={sidebar}
-      workspaces={catalog.data?.accessibleWorkspaces ?? null}
+      workspaces={page.url.pathname === '/' ? null : catalog.data?.accessibleWorkspaces ?? null}
       workspaceError={catalog.data?.workspaceCatalogError}
     />
   </SidebarFrame>
diff --git a/web/workspace/src/routes/+page.svelte b/web/workspace/src/routes/+page.svelte
index cbc762ad4..c66b9a029 100644
--- a/web/workspace/src/routes/+page.svelte
+++ b/web/workspace/src/routes/+page.svelte
@@ -2,7 +2,6 @@
   import { onMount } from 'svelte';
   import { BrowserAuth } from '#lib/workspace/auth/browser-session.svelte.ts';
   import { AUTHENTICATED_HOME } from '#lib/workspace/auth/routes.ts';
-  import RegistrationLink from '#lib/workspace/auth/RegistrationLink.svelte';
   import AccountNavigation from '#lib/workspace/auth/AccountNavigation.svelte';
   import '#lib/workspace/auth/auth-page.css';
 
@@ -31,8 +30,6 @@
       {#key auth.actor.account_id}<AccountNavigation />{/key}
     {:else}
       <a class="entry-primary" href="/login">Log in</a>
-      <RegistrationLink />
-      <a href="/activate">Activate an account with a code</a>
     {/if}
   </section>
 </div>
diff --git a/web/workspace/src/routes/entry.browser.spec.ts b/web/workspace/src/routes/entry.browser.spec.ts
index 6fc1a06c7..42e938741 100644
--- a/web/workspace/src/routes/entry.browser.spec.ts
+++ b/web/workspace/src/routes/entry.browser.spec.ts
@@ -118,8 +118,8 @@ function boundary() {
   };
 }
 for (const policy of [true, false, "error", "loading"] as const) {
-  test(`public home keeps login and exposes registration only for confirmed allowed policy: ${policy}`, async () => {
-    const { state, workspaceCalls } = boundary();
+  test(`public home routes account actions through login without loading registration policy: ${policy}`, async () => {
+    const { state, fetcher, workspaceCalls } = boundary();
     state.policy = policy;
     state.catalogStatus = 401;
     render(Home);
@@ -128,22 +128,15 @@ for (const policy of [true, false, "error", "loading"] as const) {
         "href",
       ),
     ).toBe("/login");
-    if (policy === true) {
-      expect(
-        (await screen.findByRole("link", { name: "Create a new account" }))
-          .getAttribute("href"),
-      ).toBe("/register?returnTo=%2Fdashboard");
-    } else {
-      await screen.findByText(
-        policy === false
-          ? /registration is disabled/
-          : policy === "error"
-          ? /availability is unknown/
-          : /Checking registration/,
-      );
-      expect(screen.queryByRole("link", { name: "Create a new account" }))
-        .toBeNull();
-    }
+    expect(screen.queryByRole("link", { name: "Create a new account" }))
+      .toBeNull();
+    expect(
+      screen.queryByRole("link", { name: "Activate an account with a code" }),
+    )
+      .toBeNull();
+    expect(screen.queryByText(/registration/i)).toBeNull();
+    expect(fetcher.mock.calls.map(([path]) => String(path)))
+      .not.toContain("/api/auth/registration-policy");
     expect(workspaceCalls()).toEqual([]);
     expect(screen.queryByText(/No accessible Workspaces/)).toBeNull();
   });
diff --git a/web/workspace/test/auth-browser/entry-shell.browser.test.ts b/web/workspace/test/auth-browser/entry-shell.browser.test.ts
index ee5bf98ac..c1b398692 100644
--- a/web/workspace/test/auth-browser/entry-shell.browser.test.ts
+++ b/web/workspace/test/auth-browser/entry-shell.browser.test.ts
@@ -11,7 +11,7 @@ import {
 const root = resolve(import.meta.dirname!, "../../../..");
 const origin = "http://127.0.0.1:15411";
 const ready = (page: Page, name: string) =>
-  page.getByRole("link", { name, exact: true }).waitFor();
+  page.getByRole("main").getByRole("link", { name, exact: true }).waitFor();
 async function focusWithoutSessionCheck(page: Page) {
   let checks = 0;
   const observe = (request: import("playwright").Request) => {
@@ -123,6 +123,24 @@ Deno.test("public entry isolates Workspace authority and authenticated dashboard
                 await page.getByRole("heading", { name: "Yoi", exact: true })
                   .waitFor();
                 await ready(page, "Log in");
+                assertEquals(
+                  await page.locator(
+                    'a[href^="/register"], a[href="/activate"]',
+                  ).count(),
+                  0,
+                );
+                assertEquals(await page.getByText(/registration/i).count(), 0);
+                await page.getByRole("link", { name: "Log in", exact: true })
+                  .click();
+                await page.getByRole("button", { name: "Log in with passkey" })
+                  .waitFor();
+                assertEquals(
+                  await page.getByRole("link", {
+                    name: "Activate an account with a code",
+                    exact: true,
+                  }).getAttribute("href"),
+                  "/activate",
+                );
                 if (mode === "anonymous") {
                   await ready(page, "Create a new account");
                   assertEquals(
@@ -146,19 +164,6 @@ Deno.test("public entry isolates Workspace authority and authenticated dashboard
                     0,
                   );
                 }
-                await page.getByRole("link", { name: "Log in", exact: true })
-                  .click();
-                await page.getByRole("button", { name: "Log in with passkey" })
-                  .waitFor();
-                if (mode === "policy-disabled") {
-                  await page.getByText(/registration is disabled/).waitFor();
-                  assertEquals(
-                    await page.getByRole("link", {
-                      name: "Create a new account",
-                    }).count(),
-                    0,
-                  );
-                }
                 assertEquals(workspaceCalls, 0);
                 assertEquals(
                   await page.locator(".workspace-catalog-alert").count(),
diff --git a/web/workspace/test/auth-browser/session-navigation.ts b/web/workspace/test/auth-browser/session-navigation.ts
index 3da93f637..0442b6c79 100644
--- a/web/workspace/test/auth-browser/session-navigation.ts
+++ b/web/workspace/test/auth-browser/session-navigation.ts
@@ -289,7 +289,9 @@ export async function sessionNavigation(
         if (active) {
           await at(page, target);
           assertEquals(await page.getByText("Loading session…").count(), 0);
-          await page.getByRole("link", { name: "Dashboard / Workspaces" })
+          await page.getByRole("main").getByRole("link", {
+            name: "Dashboard / Workspaces",
+          })
             .click();
           await at(page, loginTarget("/dashboard"));
           await login(page);
diff --git a/web/workspace/test/auth-browser/sidebar-shell.browser.test.ts b/web/workspace/test/auth-browser/sidebar-shell.browser.test.ts
new file mode 100644
index 000000000..eeb94fe93
--- /dev/null
+++ b/web/workspace/test/auth-browser/sidebar-shell.browser.test.ts
@@ -0,0 +1,223 @@
+/// <reference lib="dom" />
+// 本番shell/routerと合成HTTP。実アカウントや認証器は操作しない。
+import { assertEquals } from "@std/assert";
+import { resolve } from "@std/path";
+import { chromium } from "playwright";
+import {
+  startOwnedProcesses,
+  stopOwnedProcesses,
+} from "../../../../tools/web-ux/src/processes.ts";
+
+const root = resolve(import.meta.dirname!, "../../../..");
+const origin = "http://127.0.0.1:15421";
+const output = `${root}/target/web-ux/sidebar-restoration`;
+
+Deno.test("only authenticated account and home show the sidebar; public entry remains standalone", async (t) => {
+  const processes = await startOwnedProcesses(
+    [{
+      id: "sidebar-fixture",
+      command: "deno",
+      cwd: root,
+      args: [
+        "run",
+        "--config",
+        "tools/web-ux/deno.json",
+        "--allow-read",
+        "--allow-net",
+        "web/workspace/test/auth-browser/fixture-server.ts",
+        "15421",
+        "web/workspace/build",
+      ],
+      readyUrl: `${origin}/health`,
+    }],
+    `${root}/tools/web-ux/scenarios/anonymous-entry.json`,
+    `${output}/processes`,
+    [],
+  );
+  try {
+    const browser = await chromium.launch();
+    try {
+      for (const width of [1440, 390]) {
+        for (
+          const [path, mode] of [
+            ["/account", "workspace-one"],
+            ["/account", "account"],
+            ["/account", "workspace-error"],
+            ["/account", "workspace-loading"],
+            ["/", "anonymous"],
+            ["/", "account"],
+            ["/", "session-error"],
+            ["/", "session-loading"],
+          ]
+        ) {
+          await t.step(`${width}: ${path} ${mode}`, async () => {
+            const context = await browser.newContext({
+              viewport: { width, height: 900 },
+              colorScheme: width === 390 ? "dark" : "light",
+              reducedMotion: "reduce",
+            });
+            try {
+              const page = await context.newPage();
+              page.setDefaultTimeout(10_000);
+              const errors: string[] = [];
+              let catalogCalls = 0;
+              page.on("pageerror", (error) => errors.push(error.message));
+              page.on("request", (request) => {
+                if (new URL(request.url()).pathname === "/api/workspaces") {
+                  catalogCalls++;
+                }
+              });
+              await page.request.get(`${origin}/?fixture=${mode}`);
+              await page.goto(`${origin}${path}`);
+              await page.getByRole("heading", {
+                name: path === "/" ? "Yoi" : "Account",
+                exact: true,
+              }).waitFor();
+              if (path === "/" && mode !== "account") {
+                if (mode === "anonymous") {
+                  await page.getByRole("link", { name: "Log in", exact: true })
+                    .waitFor();
+                } else if (mode === "session-error") {
+                  await page.getByRole("alert").waitFor();
+                } else {
+                  await page.getByText("Loading session…", { exact: true })
+                    .waitFor();
+                }
+                assertEquals(await page.locator(".sidebar-frame").count(), 0);
+                assertEquals(
+                  await page.locator(".app-shell__topbar").count(),
+                  0,
+                );
+                if (mode === "anonymous") {
+                  await page.screenshot({
+                    path: `${output}/anonymous-${width}.png`,
+                  });
+                  await page.getByRole("link", { name: "Log in", exact: true })
+                    .click();
+                  await page.getByRole("button", {
+                    name: "Log in with passkey",
+                    exact: true,
+                  }).waitFor();
+                  assertEquals(await page.locator(".sidebar-frame").count(), 0);
+                  await page.goBack();
+                  await page.getByRole("link", { name: "Log in", exact: true })
+                    .waitFor();
+                  assertEquals(await page.locator(".sidebar-frame").count(), 0);
+                }
+                assertEquals(catalogCalls, 0);
+                assertEquals(errors, []);
+                return;
+              }
+              const sidebar = page.getByRole("complementary", {
+                name: "Sidebar",
+                exact: true,
+              });
+              if (width === 390) {
+                await page.getByRole("button", {
+                  name: "Show sidebar",
+                  exact: true,
+                }).click();
+                assertEquals(
+                  await page.locator("main").evaluate((main) =>
+                    main.hasAttribute("inert")
+                  ),
+                  true,
+                );
+              }
+              const navigation = sidebar.getByRole("navigation", {
+                name: "Global pages",
+                exact: true,
+              });
+              await navigation.getByRole("link", {
+                name: "Dashboard / Workspaces",
+                exact: true,
+              }).waitFor();
+              const account = navigation.getByRole("link", {
+                name: "Account",
+                exact: true,
+              });
+              assertEquals(await account.getAttribute("href"), "/account");
+              assertEquals(
+                await account.getAttribute("aria-current"),
+                path === "/account" ? "page" : null,
+              );
+              if (mode === "workspace-one") {
+                await navigation.getByRole("link", {
+                  name: "New Workspace",
+                  exact: true,
+                }).waitFor();
+              } else if (path === "/account" && mode === "account") {
+                await navigation.getByText("No accessible Workspaces.", {
+                  exact: true,
+                }).waitFor();
+              } else {
+                assertEquals(
+                  await navigation.getByText("No accessible Workspaces.", {
+                    exact: true,
+                  }).count(),
+                  0,
+                );
+              }
+              if (path === "/") assertEquals(catalogCalls, 0);
+              if (
+                mode === "workspace-one" ||
+                (path === "/" && mode === "account")
+              ) {
+                await page.screenshot({
+                  path: `${output}/${
+                    path === "/" ? "home" : "account"
+                  }-${width}.png`,
+                });
+              }
+              if (width === 390) {
+                await page.getByRole("button", {
+                  name: "Hide sidebar",
+                  exact: true,
+                }).click();
+                assertEquals(
+                  await page.locator("main").evaluate((main) =>
+                    main.hasAttribute("inert")
+                  ),
+                  false,
+                );
+              }
+              if (path === "/account") {
+                await page.getByRole("button", {
+                  name: "Add passkey to alice",
+                  exact: true,
+                }).waitFor();
+                await page.getByRole("button", { name: "Log out", exact: true })
+                  .waitFor();
+              } else {
+                // The authenticated home has a sidebar; logout must remove it on return.
+                await page.getByRole("main").getByRole("link", {
+                  name: "Account",
+                  exact: true,
+                }).click();
+                await page.getByRole("button", { name: "Log out", exact: true })
+                  .click();
+                await page.getByRole("link", { name: "Log in", exact: true })
+                  .waitFor();
+                assertEquals(new URL(page.url()).pathname, "/");
+                assertEquals(await page.locator(".sidebar-frame").count(), 0);
+              }
+              assertEquals(
+                await page.evaluate(() =>
+                  document.documentElement.scrollWidth > innerWidth
+                ),
+                false,
+              );
+              assertEquals(errors, []);
+            } finally {
+              await context.close();
+            }
+          });
+        }
+      }
+    } finally {
+      await browser.close();
+    }
+  } finally {
+    await stopOwnedProcesses(processes);
+  }
+});
diff --git a/web/workspace/test/spa-shell.test.ts b/web/workspace/test/spa-shell.test.ts
index fd4b56f38..646f42817 100644
--- a/web/workspace/test/spa-shell.test.ts
+++ b/web/workspace/test/spa-shell.test.ts
@@ -10,7 +10,6 @@ Deno.test("authentication and hosting shells never require Workspace catalog aut
       "/activate",
       "/login",
       "/register",
-      "/account",
       "/login/device",
       "/hosting/accounts",
       "/hosting/settings",
@@ -49,6 +48,45 @@ Deno.test("authentication and hosting shells never require Workspace catalog aut
   }
 });
 
+Deno.test("account loads its sidebar catalog without making catalog failure an admission failure", async () => {
+  const original = globalThis.fetch;
+  try {
+    globalThis.fetch = async () =>
+      Response.json({
+        actor: {
+          user_id: "u",
+          account_id: "a",
+          handle: "alice",
+          display_name: "Alice",
+          auth_method: "browser_session",
+        },
+        session: { kind: "authenticated", expires_at: "2099-01-01T00:00:00Z" },
+      });
+    browserSession.invalidate();
+    let calls = 0;
+    const event = {
+      depends: () => {},
+      url: new URL("https://workspace.test/account"),
+      fetch: () => {
+        calls++;
+        throw new Error("Workspace catalog unavailable");
+      },
+    } as unknown as Parameters<typeof load>[0];
+    const result = await load(event);
+    assertEquals(calls, 1);
+    assertEquals(await result.deferredCatalog, {
+      ok: true,
+      data: {
+        accessibleWorkspaces: [],
+        workspaceCatalogError: "Workspace catalog unavailable",
+      },
+    });
+  } finally {
+    browserSession.dispose();
+    globalThis.fetch = original;
+  }
+});
+
 Deno.test("workspace frontend serves deep links through the client SPA", () => {
   assertEquals(ssr, false);
 });