diff --git a/CHANGELOG.md b/CHANGELOG.md
index 85233ba73..3c3b37c8f 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -26,7 +26,7 @@
 
 ### Changed
 
-- Server and desktop sync moved out of the core app into a plugin. Existing links and offline copies keep working
+- Server and desktop sync moved out of the core app into a plugin, including the Sync screen, the link wizard and the first run step. Existing links and offline copies keep working
 - The icon rail, sidebar, tab bar, dock, Dashboard, Manage, Settings and command palette now come from a bundled layout. It can be swapped for another layout but not removed, and a fix to it no longer needs a Termix release
 - Your theme is saved to your account so your other devices use it too, unless you keep settings on this device only
 - The themes besides light and dark now come from a bundled themes plugin. It can be swapped but not removed, and Termix keeps a basic light and dark theme of its own
diff --git a/packages/plugin-sdk/CHANGELOG.md b/packages/plugin-sdk/CHANGELOG.md
index 64f49bc36..af2fbae0f 100644
--- a/packages/plugin-sdk/CHANGELOG.md
+++ b/packages/plugin-sdk/CHANGELOG.md
@@ -8,6 +8,10 @@ Plugin API 1.8.0.
 
 - `ctx.sync.provide` and the `sync:provide` capability, so a plugin can answer every /sync request
 
+### Removed
+
+- The sync screens and calls in `@termix-ssh/plugin-sdk/ui`: `LinkServerDialog`, `ProxySettingsFields`, `useSyncStatus`, `refreshSyncStatus`, `setSyncStatus`, `getSyncConflicts`, `getSyncErrors`, `retrySyncErrors`, `settleSyncConflict`, `syncNow`, `unlinkServer`, `updateSyncSettings` and their types. They moved into the sync plugin
+
 ## 1.0.15
 
 Plugin API 1.7.0.
diff --git a/packages/plugin-sdk/ui.api.txt b/packages/plugin-sdk/ui.api.txt
index bb2f9414b..501cb2113 100644
--- a/packages/plugin-sdk/ui.api.txt
+++ b/packages/plugin-sdk/ui.api.txt
@@ -176,7 +176,6 @@ LANGUAGES (value): readonly { code: string; label: string; }[]
 Label (value): ({ className, ...props }: LabelProps & RefAttributes<HTMLLabelElement>) => Element
 LineChart (value): ({ series, timestamps, domain, yFormatter, height, className, }: LineChartProps) => Element
 LineChartSeries (type): LineChartSeries
-LinkServerDialog (value): ({ open, onOpenChange, onLinked, relogin, }: LinkServerDialogProps) => Element
 LinkedAccountInfo (type): LinkedAccountInfo
 ListBadge (value): ({ tone, className, children, }: { tone?: "destructive" | "muted" | "brand" | "warning" | "success"; className?: string; children: ReactNode; }) => Element
 ListRow (value): ({ title, icon, badges, meta, stripe, tone, color, selected, active, dimmed, leading, trailing, actions, onClick, className, children, ...rest }: { title: ReactNode; icon?: ReactNode; badges?: ReactNode; meta?: ReactNode; stripe?: number; tone?: ListRowTone; color?: string; selected?: boolean; active?: boolean; dimmed?: boolean; leading?: ReactNode; trailing?: ReactNode; actions?: ReactNode; onClick?: () => void; className?: string; children?: ReactNode; } & Omit<HTMLAttributes<HTMLDivElement>, "title" | "children" | "onClick">) => Element
@@ -227,7 +226,6 @@ PopoverAnchor (value): ({ ...props }: PopoverAnchorProps & RefAttributes<HTMLDiv
 PopoverContent (value): ({ className, align, sideOffset, ...props }: PopoverContentProps & RefAttributes<HTMLDivElement>) => Element
 PopoverTrigger (value): ({ ...props }: PopoverTriggerProps & RefAttributes<HTMLButtonElement>) => Element
 ProxyNode (type): ProxyNode
-ProxySettingsFields (value): ({ customHeaders, basicAuth, onChange, }: ProxySettingsFieldsProps) => Element
 RadialGauge (value): ({ value, label, caption, size, strokeWidth, className, colorClassName, }: RadialGaugeProps) => Element
 RadialGaugeProps (type): RadialGaugeProps
 RailGroup (type): RailGroup
@@ -288,12 +286,6 @@ SurfaceKind (type): SurfaceKind
 SurfaceScope (value): ({ kind, onEditingChange, onClose, className, children, }: { kind?: SurfaceKind; onClose?: () => void; onEditingChange?: (editing: EditingWidth) => void; className?: string; children: ReactNode; }) => Element
 Switch (value): ({ className, ...props }: SwitchProps & RefAttributes<HTMLButtonElement>) => Element
 SwitchRow (value): ({ label, description, badge, checked, onChange, disabled, defaultKey, rowId, }: { label: string; description?: ReactNode; badge?: string; checked: boolean; onChange: (value: boolean) => void; disabled?: boolean; defaultKey?: string; rowId?: string; }) => Element
-SyncBasicAuth (type): SyncBasicAuth
-SyncConflictItem (type): SyncConflictItem
-SyncEntityInfo (type): SyncEntityInfo
-SyncErrorItem (type): SyncErrorItem
-SyncProxyHeader (type): SyncProxyHeader
-SyncStatus (type): SyncStatus
 TOTPDialog (value): ({ isOpen, prompt, mode, waiting, onSubmit, onCancel, backgroundColor, }: TOTPDialogProps) => Element
 Tab (type): Tab
 TabShellCallbacks (type): TabShellCallbacks
@@ -443,8 +435,6 @@ getSessionTimeoutMinutes (value): () => Promise<number>
 getSessions (value): () => Promise<{ sessions: { id: string; userId: string; username?: string; deviceType: string; deviceInfo: string; createdAt: string; expiresAt: string; lastActiveAt: string; isRevoked?: boolean; isCurrentSession?: boolean; }[]; }>
 getStatusCheckSettings (value): () => Promise<{ statusCheckInterval: number; }>
 getStatusClasses (value): (status: boolean | "online" | "offline" | "unknown", scheme: StatusColorScheme, variant: "dot" | "stripe" | "badge", loading?: boolean) => string
-getSyncConflicts (value): () => Promise<SyncConflictItem[]>
-getSyncErrors (value): () => Promise<SyncErrorItem[]>
 getTabType (value): (id: string) => TabTypeDef
 getTlsStatus (value): () => Promise<TlsStatus>
 getUpdateChannel (value): () => Promise<UpdateChannelState>
@@ -509,7 +499,6 @@ quickConnectTargets (value): (all: HostActionDef[], host: Host) => HostActionDef
 railItemLabel (value): (id: string, t: (key: string) => string) => string
 readFromClipboard (value): () => Promise<string>
 recordHostActionPreference (value): (hostId: string, action: TabType) => void
-refreshSyncStatus (value): () => void
 registerLayout (value): (item: RegisteredLayout) => () => void
 registerTabCloseGuard (value): (tabId: string, guard: Guard) => () => void
 releaseUrlFrom (value): (info: VersionInfo) => string
@@ -532,7 +521,6 @@ resolveConnectionOrigin (value): (host: OriginResolvableHost, options?: { defaul
 resolveHostDefaults (value): (where: { hostId?: number; folder?: string; parentHostId?: number; }, adminTargetUserId?: string) => Promise<Record<string, ResolvedHostDefault>>
 resolveHostTabType (value): (host: Host, preferredType?: TabType) => TabType
 resolveRemoteHostId (value): (syncId: string) => Promise<number>
-retrySyncErrors (value): () => Promise<SyncStatus>
 revokeAllUserSessions (value): (userId: string) => Promise<{ success: boolean; message: string; }>
 revokeCredentialAccess (value): (credentialId: number, accessId: number) => Promise<void>
 revokeFolderAccess (value): (ruleId: number) => Promise<void>
@@ -556,21 +544,17 @@ setDeveloperMode (value): (enabled: boolean) => Promise<void>
 setHostAuthOverride (value): (hostId: number, protocol: string, credentialId: number, sharedCopySyncId?: string) => Promise<{ success: boolean; protocol: string; credentialId: number; }>
 setNotificationPrivateEndpoints (value): (hosts: string[]) => Promise<string[]>
 setPluginOptions (value): (pluginId: string, options: { autoUpdate?: boolean; pinned?: boolean; channel?: PluginChannel; }) => Promise<{ autoUpdate: boolean; pinnedVersion: string; channel: PluginChannel; }>
-setSyncStatus (value): (next: SyncStatus) => void
 setUpdateChannel (value): (channel: UpdateChannel) => Promise<UpdateChannelState>
-settleSyncConflict (value): (id: number, keep: "mine" | "server") => Promise<void>
 shareCredential (value): (credentialId: number, targets: ShareTarget[], permissionLevel: CredentialPermissionLevel, durationHours?: number) => Promise<{ success: boolean; expiresAt: string; }>
 shareFolder (value): (folder: string, shareData: { targets: ShareTarget[]; permissionLevel: SharePermissionLevel; durationHours?: number; }) => Promise<{ success: boolean; expiresAt: string; hostsShared: number; hostsTotal: number; hostResults: { hostId: number; shared: boolean; reason?: string; }[]; }>
 shareHost (value): (hostId: number, shareData: { targets: ShareTarget[]; permissionLevel: SharePermissionLevel; durationHours?: number; }, syncId?: string) => Promise<{ success: boolean; expiresAt: string; results: { type: "role" | "user"; id: string | number; accessId: number; created: boolean; }[]; }>
 shell (value): TabShellCallbacks
 splitDefaultKey (value): (fullKey: string) => [string, string]
 sshHostToHost (value): (h: SSHHostWithStatus) => Host
-syncNow (value): () => Promise<SyncStatus>
 tabIcon (value): (type: TabType) => Element
 tabJumpHotkeyKeys (value): () => string[]
 takePendingManageRequest (value): () => ManageRequest
 unlinkExternalFromPasswordAccount (value): (userId: string) => Promise<{ success: boolean; message: string; }>
-unlinkServer (value): (keepData: boolean) => Promise<SyncStatus>
 updateCredential (value): (credentialId: number, credentialData: Record<string, unknown>) => Promise<Record<string, unknown>>
 updateExternalAutoProvision (value): (enabled: boolean) => Promise<Record<string, unknown>>
 updateFolderMetadata (value): (name: string, color?: string, icon?: string, credentialId?: number, localOnly?: boolean) => Promise<void>
@@ -588,7 +572,6 @@ updateSSHHost (value): (hostId: number, hostData: HostData) => Promise<Host>
 updateSecondFactorAfterExternalLogin (value): (enabled: boolean) => Promise<Record<string, unknown>>
 updateSessionTimeout (value): (timeoutHours: number) => Promise<void>
 updateStatusCheckSettings (value): (settings: { statusCheckInterval: number; }) => Promise<void>
-updateSyncSettings (value): (settings: { disabledTypes?: string[]; customHeaders?: SyncProxyHeader[]; basicAuth?: SyncBasicAuth; allowInvalidCertificate?: boolean; }) => Promise<SyncStatus>
 uploadTlsCertificate (value): (payload: { certificate: string; privateKey: string; }) => Promise<TlsStatus & { success: boolean; reloadMessage?: string; }>
 usageBarColor (value): (percent: number) => string
 usageColor (value): (percent: number) => string
@@ -635,7 +618,6 @@ useSshAuthEditors (value): () => SshAuthEditorDef[]
 useSshAuthProviders (value): () => { providers: SshAuthTypeOption[]; loaded: boolean; find: (type: string) => SshAuthTypeOption; }
 useStatusColorScheme (value): () => StatusColorScheme
 useSurfaceKind (value): () => SurfaceKind
-useSyncStatus (value): () => any
 useTabHandlesVersion (value): () => number
 useTabs (value): () => TabContextType
 useTabsSafe (value): () => TabContextType
diff --git a/scripts/check-sdk-ui-exports.cjs b/scripts/check-sdk-ui-exports.cjs
index a58372a33..c7ecb49c4 100644
--- a/scripts/check-sdk-ui-exports.cjs
+++ b/scripts/check-sdk-ui-exports.cjs
@@ -197,7 +197,6 @@ const ALLOWED = [
   "Label",
   "LineChart",
   "LineChartSeries",
-  "LinkServerDialog",
   "LinkedAccountInfo",
   "ListBadge",
   "ListRow",
@@ -248,7 +247,6 @@ const ALLOWED = [
   "PopoverContent",
   "PopoverTrigger",
   "ProxyNode",
-  "ProxySettingsFields",
   "RadialGauge",
   "RadialGaugeProps",
   "RailGroup",
@@ -309,12 +307,6 @@ const ALLOWED = [
   "SurfaceScope",
   "Switch",
   "SwitchRow",
-  "SyncBasicAuth",
-  "SyncConflictItem",
-  "SyncEntityInfo",
-  "SyncErrorItem",
-  "SyncProxyHeader",
-  "SyncStatus",
   "TOTPDialog",
   "Tab",
   "TabShellCallbacks",
@@ -464,8 +456,6 @@ const ALLOWED = [
   "getSessions",
   "getStatusCheckSettings",
   "getStatusClasses",
-  "getSyncConflicts",
-  "getSyncErrors",
   "getTabType",
   "getTlsStatus",
   "getUpdateChannel",
@@ -530,7 +520,6 @@ const ALLOWED = [
   "railItemLabel",
   "readFromClipboard",
   "recordHostActionPreference",
-  "refreshSyncStatus",
   "registerLayout",
   "registerTabCloseGuard",
   "releaseUrlFrom",
@@ -553,7 +542,6 @@ const ALLOWED = [
   "resolveHostDefaults",
   "resolveHostTabType",
   "resolveRemoteHostId",
-  "retrySyncErrors",
   "revokeAllUserSessions",
   "revokeCredentialAccess",
   "revokeFolderAccess",
@@ -577,21 +565,17 @@ const ALLOWED = [
   "setHostAuthOverride",
   "setNotificationPrivateEndpoints",
   "setPluginOptions",
-  "setSyncStatus",
   "setUpdateChannel",
-  "settleSyncConflict",
   "shareCredential",
   "shareFolder",
   "shareHost",
   "shell",
   "splitDefaultKey",
   "sshHostToHost",
-  "syncNow",
   "tabIcon",
   "tabJumpHotkeyKeys",
   "takePendingManageRequest",
   "unlinkExternalFromPasswordAccount",
-  "unlinkServer",
   "updateCredential",
   "updateExternalAutoProvision",
   "updateFolderMetadata",
@@ -609,7 +593,6 @@ const ALLOWED = [
   "updateSessionTimeout",
   "updateHttpsSettings",
   "updateStatusCheckSettings",
-  "updateSyncSettings",
   "uploadTlsCertificate",
   "usageBarColor",
   "usageColor",
@@ -656,7 +639,6 @@ const ALLOWED = [
   "useSshAuthProviders",
   "useStatusColorScheme",
   "useSurfaceKind",
-  "useSyncStatus",
   "useTabHandlesVersion",
   "useTabs",
   "useTabsSafe",
diff --git a/src/backend/tests/sync/entity-labels.test.ts b/src/backend/tests/sync/entity-labels.test.ts
deleted file mode 100644
index b59a1f491..000000000
--- a/src/backend/tests/sync/entity-labels.test.ts
+++ /dev/null
@@ -1,26 +0,0 @@
-import { afterEach, describe, expect, it, vi } from "vitest";
-import fs from "node:fs";
-
-vi.mock("../../database/db/index.js", () => ({}));
-
-import { registerCoreSyncEntities } from "../../sync/entities.js";
-import {
-  listEntityTypes,
-  resetSyncRegistry,
-} from "../../plugins/sync-registry.js";
-
-afterEach(() => resetSyncRegistry());
-
-describe("core sync entities", () => {
-  it("each has a label in the Sync panel", () => {
-    registerCoreSyncEntities();
-    const en = JSON.parse(
-      fs.readFileSync(
-        new URL("../../../ui/locales/en.json", import.meta.url),
-        "utf8",
-      ),
-    );
-    const missing = listEntityTypes().filter((type) => !en.sync.entities[type]);
-    expect(missing).toEqual([]);
-  });
-});
diff --git a/src/types/onboarding.ts b/src/types/onboarding.ts
index 4c962196d..b7ed985fc 100644
--- a/src/types/onboarding.ts
+++ b/src/types/onboarding.ts
@@ -10,7 +10,6 @@
 
 export const CORE_ONBOARDING_STEPS = {
   plugins: 1,
-  "desktop-sync": 1,
   "desktop-updates": 1,
   security: 1,
 } as const;
@@ -24,7 +23,6 @@ export type CoreOnboardingStepKey = keyof typeof CORE_ONBOARDING_STEPS;
  */
 export const LEGACY_SEEN: Readonly<Record<string, number>> = Object.freeze({
   plugins: 1,
-  "desktop-sync": 1,
   preset: 1,
   appearance: 1,
   security: 1,
diff --git a/src/ui/api/sync-api.ts b/src/ui/api/sync-api.ts
deleted file mode 100644
index 66f331433..000000000
--- a/src/ui/api/sync-api.ts
+++ /dev/null
@@ -1,155 +0,0 @@
-import { authApi } from "@/main-axios";
-
-export type SyncState = "idle" | "syncing" | "offline" | "error" | "signed_out";
-
-export interface SyncProxyHeader {
-  name: string;
-  value: string;
-  /** A saved header whose value is not sent back. */
-  set?: boolean;
-}
-
-export interface SyncBasicAuth {
-  username: string;
-  password: string;
-  set?: boolean;
-}
-
-export interface SyncEntityInfo {
-  type: string;
-  owner: string;
-  ownerName: string | null;
-  readOnly: boolean;
-  onServer: boolean;
-  onDevice: boolean;
-  enabled: boolean;
-}
-
-export interface SyncStatus {
-  linked: boolean;
-  serverUrl?: string;
-  serverName?: string | null;
-  serverVersion?: string | null;
-  account?: {
-    username?: string;
-    isAdmin?: boolean;
-    roles?: string[];
-    permissions?: string[];
-  };
-  status?: SyncState;
-  lastError?: string | null;
-  linkedAt?: string;
-  lastSyncAt?: string | null;
-  pending?: number;
-  conflicts?: number;
-  errors?: number;
-  firstSyncDone?: boolean;
-  allowInvalidCertificate?: boolean;
-  customHeaders?: SyncProxyHeader[];
-  basicAuth?: SyncBasicAuth | null;
-  entities: SyncEntityInfo[];
-}
-
-export type ProbeProblem =
-  | "invalid_url"
-  | "unreachable"
-  | "tls_untrusted"
-  | "basic_auth_required"
-  | "proxy_login"
-  | "not_termix"
-  | "version_mismatch"
-  | "different_account";
-
-export interface ProbeResult {
-  ok: boolean;
-  serverUrl?: string;
-  name?: string;
-  version?: string | null;
-  problem?: ProbeProblem;
-  message?: string;
-}
-
-export interface ServerTarget {
-  serverUrl: string;
-  customHeaders?: SyncProxyHeader[];
-  basicAuth?: SyncBasicAuth | null;
-  allowInvalidCertificate?: boolean;
-}
-
-export interface SyncConflictItem {
-  id: number;
-  entityType: string;
-  syncId: string;
-  name: string;
-  createdAt: string;
-}
-
-export interface SyncErrorItem {
-  entityType: string;
-  syncId: string;
-  reason: string | null;
-}
-
-export async function getSyncStatus(): Promise<SyncStatus> {
-  return (await authApi.get("/sync/link/status")).data;
-}
-
-export async function probeServer(target: ServerTarget): Promise<ProbeResult> {
-  return (await authApi.post("/sync/link/probe", target)).data;
-}
-
-export async function getLinkPreview(): Promise<Record<string, number>> {
-  return (await authApi.get("/sync/link/preview")).data?.counts ?? {};
-}
-
-export async function completeLink(
-  input: ServerTarget & {
-    token: string;
-    mode: "merge" | "replace";
-    serverName?: string;
-  },
-): Promise<SyncStatus> {
-  return (await authApi.post("/sync/link/complete", input)).data;
-}
-
-export async function reloginLink(token: string): Promise<SyncStatus> {
-  return (await authApi.post("/sync/link/relogin", { token })).data;
-}
-
-export async function unlinkServer(keepData: boolean): Promise<SyncStatus> {
-  return (await authApi.post("/sync/link/unlink", { keepData })).data;
-}
-
-export async function syncNow(): Promise<SyncStatus> {
-  return (await authApi.post("/sync/link/sync", {}, { timeout: 300_000 })).data;
-}
-
-export async function updateSyncSettings(settings: {
-  disabledTypes?: string[];
-  customHeaders?: SyncProxyHeader[];
-  basicAuth?: SyncBasicAuth | null;
-  allowInvalidCertificate?: boolean;
-}): Promise<SyncStatus> {
-  return (await authApi.put("/sync/link/settings", settings)).data;
-}
-
-export async function getSyncConflicts(): Promise<SyncConflictItem[]> {
-  return (await authApi.get("/sync/link/conflicts")).data?.conflicts ?? [];
-}
-
-export async function settleSyncConflict(
-  id: number,
-  keep: "mine" | "server",
-): Promise<void> {
-  await authApi.post(`/sync/link/conflicts/${id}`, { keep });
-}
-
-export async function getSyncErrors(): Promise<SyncErrorItem[]> {
-  return (await authApi.get("/sync/link/errors")).data?.errors ?? [];
-}
-
-export async function retrySyncErrors(): Promise<SyncStatus> {
-  return (
-    await authApi.post("/sync/link/errors/retry", {}, { timeout: 300_000 })
-  ).data;
-}
diff --git a/src/ui/auth/ElectronLoginForm.tsx b/src/ui/auth/ElectronLoginForm.tsx
deleted file mode 100644
index e53be08a0..000000000
--- a/src/ui/auth/ElectronLoginForm.tsx
+++ /dev/null
@@ -1,319 +0,0 @@
-import { getErrorMessage } from "../lib/error-message.js";
-import React, { useState, useEffect, useRef, useCallback } from "react";
-import { Alert, AlertDescription, AlertTitle } from "@/components/alert.tsx";
-import { useTranslation } from "react-i18next";
-import { AlertCircle, Loader2, ArrowLeft, RefreshCw } from "lucide-react";
-
-interface ElectronLoginFormProps {
-  serverUrl: string;
-  onAuthSuccess: (token: string | null) => void | Promise<void>;
-  onChangeServer: () => void;
-  // "local" (default): the app's own login, the token goes to localStorage
-  // like every other client. "link": signing in to a server to link this
-  // desktop to it; the token is only handed to onAuthSuccess, which trades
-  // it for the desktop's own session.
-  targetPurpose?: "local" | "link";
-}
-
-const AUTH_MESSAGE_SOURCES = new Set([
-  "auth_component",
-  "second_factor_auth_component",
-  "method_auth_component",
-  "oidc_callback",
-]);
-
-export function ElectronLoginForm({
-  serverUrl,
-  onAuthSuccess,
-  onChangeServer,
-  targetPurpose = "local",
-}: ElectronLoginFormProps) {
-  const { t } = useTranslation();
-  const [loading, setLoading] = useState(true);
-  const [error, setError] = useState<string | null>(null);
-  const [isAuthenticating, setIsAuthenticating] = useState(false);
-  const isAuthenticatingRef = useRef(false);
-  const iframeRef = useRef<HTMLIFrameElement>(null);
-  const hasAuthenticatedRef = useRef(false);
-  const [currentUrl, setCurrentUrl] = useState(serverUrl);
-  const hasLoadedOnce = useRef(false);
-  const onAuthSuccessRef = useRef(onAuthSuccess);
-  useEffect(() => {
-    onAuthSuccessRef.current = onAuthSuccess;
-  }, [onAuthSuccess]);
-
-  const handleAuthSuccess = useCallback(
-    async (token: string | null) => {
-      if (hasAuthenticatedRef.current || isAuthenticatingRef.current) return;
-      hasAuthenticatedRef.current = true;
-      isAuthenticatingRef.current = true;
-      setIsAuthenticating(true);
-
-      try {
-        if (targetPurpose === "link") {
-          if (!token) {
-            throw new Error(t("errors.authTokenMissing"));
-          }
-        } else if (token) {
-          localStorage.setItem("jwt", token);
-        }
-        await onAuthSuccessRef.current(token);
-      } catch (err) {
-        setError(
-          err instanceof Error && err.message
-            ? err.message
-            : t("errors.authTokenSaveFailed"),
-        );
-        isAuthenticatingRef.current = false;
-        setIsAuthenticating(false);
-        hasAuthenticatedRef.current = false;
-      }
-    },
-    [t, targetPurpose],
-  );
-
-  // postMessage from server Auth.tsx after the backend has set the HttpOnly cookie.
-  // Only the server's own origin is trusted: the iframe can navigate away
-  // (identity provider, redirects), and those pages must not hand us a token,
-  // start a system browser login, or receive the replies.
-  useEffect(() => {
-    let serverOrigin: string;
-    try {
-      serverOrigin = new URL(serverUrl).origin;
-    } catch {
-      return;
-    }
-
-    const handleMessage = async (event: MessageEvent) => {
-      try {
-        if (event.source !== iframeRef.current?.contentWindow) return;
-        if (event.origin !== serverOrigin) return;
-        if (!event.data || typeof event.data !== "object") return;
-        const {
-          type,
-          platform,
-          source,
-          token,
-          authUrl,
-          callbackPort,
-          providerId,
-        } = event.data;
-
-        if (
-          type === "AUTH_SUCCESS" &&
-          platform === "desktop" &&
-          AUTH_MESSAGE_SOURCES.has(source)
-        ) {
-          await handleAuthSuccess(token ?? null);
-          return;
-        }
-
-        // OIDC login requested from inside the iframe, open the system browser
-        // so captcha stages (e.g. Cloudflare Turnstile) render correctly.
-        if (type === "OIDC_SYSTEM_BROWSER_AUTH" && authUrl && callbackPort) {
-          const sendResultToIframe = (result: {
-            success: boolean;
-            error?: string;
-            secondFactor?: boolean;
-            tempToken?: string;
-            factors?: string;
-          }) => {
-            iframeRef.current?.contentWindow?.postMessage(
-              {
-                type: "OIDC_SYSTEM_BROWSER_AUTH_RESULT",
-                source: "oidc_system_browser_auth",
-                providerId,
-                ...result,
-              },
-              serverOrigin,
-            );
-          };
-          const electronAPI = (
-            window as unknown as {
-              electronAPI?: {
-                externalBrowserLogin?: (
-                  url: string,
-                  port: number,
-                ) => Promise<{
-                  success: boolean;
-                  token?: string;
-                  error?: string;
-                  secondFactor?: boolean;
-                  tempToken?: string;
-                  factors?: string;
-                }>;
-              };
-            }
-          ).electronAPI;
-          if (!electronAPI?.externalBrowserLogin) {
-            sendResultToIframe({
-              success: false,
-              error: t("errors.failedExternalLogin"),
-            });
-            return;
-          }
-          const result = await electronAPI.externalBrowserLogin(
-            authUrl,
-            callbackPort,
-          );
-          if (result.success && result.token) {
-            await handleAuthSuccess(result.token);
-            return;
-          }
-          // The login stopped for a second factor; the iframe asks for it.
-          if (result.secondFactor) {
-            sendResultToIframe({
-              success: false,
-              secondFactor: true,
-              tempToken: result.tempToken,
-              factors: result.factors,
-            });
-            return;
-          }
-          sendResultToIframe({
-            success: false,
-            error: result.error || t("errors.failedExternalLogin"),
-          });
-        }
-      } catch (err) {
-        const providerId =
-          event.data &&
-          typeof event.data === "object" &&
-          typeof event.data.providerId === "number"
-            ? event.data.providerId
-            : undefined;
-        const error = getErrorMessage(err, t("errors.failedExternalLogin"));
-        iframeRef.current?.contentWindow?.postMessage(
-          {
-            type: "OIDC_SYSTEM_BROWSER_AUTH_RESULT",
-            source: "oidc_system_browser_auth",
-            providerId,
-            success: false,
-            error,
-          },
-          serverOrigin,
-        );
-      }
-    };
-
-    window.addEventListener("message", handleMessage);
-    return () => window.removeEventListener("message", handleMessage);
-  }, [handleAuthSuccess, serverUrl, t]);
-
-  useEffect(() => {
-    const iframe = iframeRef.current;
-    if (!iframe) return;
-
-    const handleLoad = () => {
-      setLoading(false);
-      hasLoadedOnce.current = true;
-      setError(null);
-
-      try {
-        if (iframe.contentWindow) {
-          setCurrentUrl(iframe.contentWindow.location.href);
-        }
-      } catch {
-        setCurrentUrl(serverUrl);
-      }
-    };
-
-    const handleError = () => {
-      setLoading(false);
-      if (hasLoadedOnce.current) {
-        setError(t("errors.failedToLoadServer"));
-      }
-    };
-
-    iframe.addEventListener("load", handleLoad);
-    iframe.addEventListener("error", handleError);
-    return () => {
-      iframe.removeEventListener("load", handleLoad);
-      iframe.removeEventListener("error", handleError);
-    };
-  }, [serverUrl, t]);
-
-  const handleRefresh = () => {
-    if (iframeRef.current) {
-      iframeRef.current.src = serverUrl;
-      setLoading(true);
-      setError(null);
-    }
-  };
-
-  const displayUrl = currentUrl.replace(/^https?:\/\//, "");
-
-  return (
-    <div className="relative w-full h-full bg-background flex flex-col">
-      {isAuthenticating && (
-        <div className="absolute inset-0 flex items-center justify-center bg-background z-50">
-          <Loader2 className="h-8 w-8 animate-spin text-primary" />
-        </div>
-      )}
-
-      {!isAuthenticating && (
-        <div className="flex items-center justify-between p-4 pr-12 bg-background border-b border-border">
-          <button
-            onClick={onChangeServer}
-            className="flex items-center gap-2 text-foreground hover:text-primary transition-colors"
-          >
-            <ArrowLeft className="h-5 w-5" />
-            <span className="text-base font-medium">
-              {t("sync.wizard.back")}
-            </span>
-          </button>
-          <div className="flex-1 mx-4 text-center">
-            <span className="text-muted-foreground text-sm truncate block">
-              {displayUrl}
-            </span>
-          </div>
-          <button
-            onClick={handleRefresh}
-            className="p-2 text-foreground hover:text-primary transition-colors"
-            disabled={loading}
-          >
-            <RefreshCw className={`h-5 w-5 ${loading ? "animate-spin" : ""}`} />
-          </button>
-        </div>
-      )}
-
-      {error && !isAuthenticating && (
-        <div className="absolute top-20 left-1/2 transform -translate-x-1/2 z-50 w-full max-w-md px-4">
-          <Alert variant="destructive">
-            <AlertCircle className="h-4 w-4" />
-            <AlertTitle>{t("common.error")}</AlertTitle>
-            <AlertDescription>{error}</AlertDescription>
-          </Alert>
-        </div>
-      )}
-
-      {loading && !isAuthenticating && (
-        <div
-          className="absolute inset-0 flex items-center justify-center bg-background z-40"
-          style={{ marginTop: "60px" }}
-        >
-          <div className="flex items-center">
-            <Loader2 className="h-8 w-8 animate-spin text-primary" />
-            <span className="ml-3 text-muted-foreground">
-              {t("auth.loadingServer")}
-            </span>
-          </div>
-        </div>
-      )}
-
-      <div
-        className="flex-1 overflow-hidden"
-        style={{ visibility: isAuthenticating ? "hidden" : "visible" }}
-      >
-        <iframe
-          ref={iframeRef}
-          src={serverUrl}
-          className="w-full h-full border-0"
-          title={t("auth.serverAuthentication")}
-          sandbox="allow-same-origin allow-scripts allow-forms allow-popups allow-popups-to-escape-sandbox allow-storage-access-by-user-activation allow-top-navigation allow-top-navigation-by-user-activation allow-modals allow-downloads"
-          allow="clipboard-read; clipboard-write; publickey-credentials-get; publickey-credentials-create"
-        />
-      </div>
-    </div>
-  );
-}
diff --git a/src/ui/hooks/use-sync-status.ts b/src/ui/hooks/use-sync-status.ts
deleted file mode 100644
index ffff67ea7..000000000
--- a/src/ui/hooks/use-sync-status.ts
+++ /dev/null
@@ -1,22 +0,0 @@
-import { useSyncExternalStore } from "react";
-import { getSyncStatusSnapshot, subscribeSyncStatus } from "@/lib/sync-status";
-
-/** The desktop's sync status, kept current while the component is mounted. */
-export function useSyncStatus() {
-  return useSyncExternalStore(
-    subscribeSyncStatus,
-    getSyncStatusSnapshot,
-    () => null,
-  );
-}
-
-/** What needs the user's attention in Sync, for the rail badge. */
-export function useSyncAttentionCount(): number | null {
-  const status = useSyncStatus();
-  if (!status?.linked) return null;
-  const count =
-    (status.conflicts ?? 0) +
-    (status.errors ?? 0) +
-    (status.status === "signed_out" ? 1 : 0);
-  return count || null;
-}
diff --git a/src/ui/lib/sync-status.ts b/src/ui/lib/sync-status.ts
deleted file mode 100644
index 593d4c8a8..000000000
--- a/src/ui/lib/sync-status.ts
+++ /dev/null
@@ -1,86 +0,0 @@
-import { isElectron } from "@/lib/electron";
-import { getSyncStatus, type SyncStatus } from "@/api/sync-api";
-import { notifySyncChanged } from "@/lib/linked-server";
-
-/**
- * The desktop's sync status, polled from the embedded backend while anything
- * shows it. When a pass finishes, the views that show synced data are told
- * to reload.
- */
-
-const IDLE_MS = 15_000;
-const BUSY_MS = 2_000;
-
-let snapshot: SyncStatus | null = null;
-let timer: ReturnType<typeof setTimeout> | null = null;
-let lastSyncAt: string | null | undefined;
-const listeners = new Set<() => void>();
-
-function emit(): void {
-  for (const listener of listeners) listener();
-}
-
-function announce(): void {
-  notifySyncChanged();
-  window.dispatchEvent(new CustomEvent("hosts:refresh"));
-  window.dispatchEvent(new CustomEvent("termix:hosts-changed"));
-  window.dispatchEvent(new CustomEvent("termix:credentials-changed"));
-  window.dispatchEvent(new CustomEvent("termix:plugins-changed"));
-}
-
-async function poll(): Promise<void> {
-  timer = null;
-  try {
-    const next = await getSyncStatus();
-    const syncedAt = next.lastSyncAt ?? null;
-    if (lastSyncAt !== undefined && syncedAt !== lastSyncAt) announce();
-    if (snapshot && snapshot.linked !== next.linked) notifySyncChanged();
-    lastSyncAt = syncedAt;
-    snapshot = next;
-    emit();
-  } catch {
-    // The backend may still be starting; the next poll tries again.
-  }
-  schedule();
-}
-
-function schedule(delay?: number): void {
-  if (listeners.size === 0 || timer) return;
-  const busy = snapshot?.status === "syncing" || !!snapshot?.pending;
-  timer = setTimeout(() => void poll(), delay ?? (busy ? BUSY_MS : IDLE_MS));
-}
-
-export function subscribeSyncStatus(listener: () => void): () => void {
-  listeners.add(listener);
-  if (isElectron() && listeners.size === 1 && !timer) void poll();
-  return () => {
-    listeners.delete(listener);
-    if (listeners.size === 0 && timer) {
-      clearTimeout(timer);
-      timer = null;
-    }
-  };
-}
-
-export function getSyncStatusSnapshot(): SyncStatus | null {
-  return snapshot;
-}
-
-/** Takes a status a request already returned, and checks again soon. */
-export function setSyncStatus(next: SyncStatus): void {
-  snapshot = next;
-  if (lastSyncAt !== undefined && (next.lastSyncAt ?? null) !== lastSyncAt) {
-    announce();
-  }
-  lastSyncAt = next.lastSyncAt ?? null;
-  emit();
-  if (timer) clearTimeout(timer);
-  timer = null;
-  schedule(BUSY_MS);
-}
-
-export function refreshSyncStatus(): void {
-  if (timer) clearTimeout(timer);
-  timer = null;
-  void poll();
-}
diff --git a/src/ui/locales/en.json b/src/ui/locales/en.json
index 108bbb334..c53a70147 100644
--- a/src/ui/locales/en.json
+++ b/src/ui/locales/en.json
@@ -215,13 +215,6 @@
     "pluginsLoadFailed": "The plugin list could not be loaded. You can choose plugins later from the Plugins tab.",
     "securityTitle": "Secure your account",
     "securityIntro": "Add a passkey or an authenticator app to your account. You can also do this later in Settings, under Security.",
-    "desktopTitle": "How do you want to use Termix?",
-    "desktopBody": "You can change this any time from Sync in the sidebar.",
-    "desktopLocalTitle": "On this device only",
-    "desktopLocalBody": "Everything is stored here. Nothing to set up.",
-    "desktopLinkTitle": "With my Termix server",
-    "desktopLinkBody": "Sign in to your server to use the same hosts and settings on every device.",
-    "desktopLinked": "Linked to {{server}}",
     "pluginsDocsLink": "Read about each one"
   },
   "desktopUpdates": {
@@ -252,7 +245,6 @@
     "hosts": "Hosts",
     "credentials": "Credentials",
     "connections": "Connections",
-    "sync": "Sync",
     "reconnectDisconnectedTerminals": "Reconnect all disconnected terminals",
     "reconnectingTerminals_one": "Reconnecting {{count}} terminal",
     "reconnectingTerminals_other": "Reconnecting {{count}} terminals",
@@ -1623,87 +1615,6 @@
     "noData": "No data",
     "filter": "Filter..."
   },
-  "sync": {
-    "minutesAgo_one": "{{count}} minute ago",
-    "minutesAgo_other": "{{count}} minutes ago",
-    "hoursAgo_one": "{{count}} hour ago",
-    "hoursAgo_other": "{{count}} hours ago",
-    "pending_one": "{{count}} change waiting to sync",
-    "pending_other": "{{count}} changes waiting to sync",
-    "proxy": {
-      "headersTitle": "Extra headers",
-      "headersHint": "Sent with every request to the server, for example a Cloudflare Access service token.",
-      "headerName": "Header name",
-      "headerValue": "Value",
-      "savedValue": "Saved, type to change",
-      "addHeader": "Add header",
-      "removeHeader": "Remove header",
-      "basicAuthTitle": "Username and password",
-      "basicAuthHint": "For a proxy that asks for a username and password before Termix.",
-      "username": "Username",
-      "password": "Password",
-      "allowInvalidCertificate": "Trust a self-signed certificate",
-      "allowInvalidCertificateHint": "Only for your own server, when its certificate is not from a known authority."
-    },
-    "problems": {
-      "invalidUrl": "That does not look like a web address.",
-      "unreachable": "Could not reach the server. Check the address and that the server is running.",
-      "unreachableWithReason": "Could not reach the server: {{reason}}",
-      "tlsUntrusted": "The server certificate is not trusted. If this is your own server with a self-signed certificate, turn on the option below.",
-      "basicAuthRequired": "Something in front of the server asks for a username and password. Enter them below.",
-      "proxyLogin": "A login page or proxy answered instead of Termix. Add the headers it needs below, or check the address.",
-      "notTermix": "There is no Termix server at that address. If it runs under a path, include it, like https://example.com/termix.",
-      "versionMismatch": "That server runs an older Termix. Update it to 2.9 or newer to link.",
-      "differentAccount": "You signed in to a different account. Sign in to the account this device is linked to, or unlink first."
-    },
-    "wizard": {
-      "title": "Link to a Termix server",
-      "reloginTitle": "Sign in again",
-      "savedServers": "Recent servers",
-      "removeServer": "Remove from the list",
-      "serverDescription": "Enter the address you use to open Termix in your browser.",
-      "signinDescription": "Sign in to {{url}}",
-      "chooseDescription": "This device already has data. What should happen to it?",
-      "finishingDescription": "Linking this device.",
-      "serverUrl": "Server address",
-      "serverUrlHint": "For example https://termix.example.com",
-      "showProxySettings": "Reverse proxy settings",
-      "hideProxySettings": "Hide reverse proxy settings",
-      "continue": "Continue",
-      "back": "Back",
-      "mergeTitle": "Add it to my account",
-      "mergeBody_one": "The item on this device is added to your account. Items your account already has stay as they are on the server.",
-      "mergeBody_other": "The {{count}} items on this device are added to your account. Items your account already has stay as they are on the server.",
-      "replaceTitle": "Replace it with my account",
-      "replaceBody_one": "The item on this device is removed, and this device takes everything from your account. Hosts kept on this device only stay.",
-      "replaceBody_other": "The {{count}} items on this device are removed, and this device takes everything from your account. Hosts kept on this device only stay.",
-      "link": "Link",
-      "linking": "Linking and running the first sync...",
-      "linked": "Linked. Your data is syncing now.",
-      "signedInAgain": "Signed in. Sync is running again."
-    },
-    "entities": {
-      "hosts": "Hosts",
-      "sshCredentials": "Credentials",
-      "sshFolders": "Folders",
-      "userPreferences": "Preferences",
-      "pluginUserSettings": "Plugin settings",
-      "sharedHosts": "Hosts shared with you",
-      "sharedCredentials": "Credentials shared with you",
-      "vaultProfiles": "Vault profiles",
-      "snippetFolders": "Snippet folders",
-      "snippets": "Snippets",
-      "dashboardServiceLinks": "Service links",
-      "homepageItems": "Homepage items",
-      "networkTopology": "Network map",
-      "workspaces": "Workspaces",
-      "hostDefaults": "Host defaults",
-      "hostDefaultsAdmin": "Server host defaults",
-      "aiProviders": "AI providers",
-      "homepageLayouts": "Homepage layouts",
-      "accountProfile": "Account profile"
-    }
-  },
   "hostDefaults": {
     "source": {
       "folder": "Folder {{name}}",
diff --git a/src/ui/onboarding/onboarding-steps.ts b/src/ui/onboarding/onboarding-steps.ts
index 3776a5219..990ec0b05 100644
--- a/src/ui/onboarding/onboarding-steps.ts
+++ b/src/ui/onboarding/onboarding-steps.ts
@@ -1,8 +1,7 @@
-import { Monitor, MonitorDown, Puzzle, Shield } from "lucide-react";
+import { MonitorDown, Puzzle, Shield } from "lucide-react";
 import { CORE_ONBOARDING_STEPS } from "@/types/onboarding";
 import { PluginsStep } from "./steps/PluginsStep";
 import { SecurityStep } from "./steps/SecurityStep";
-import { DesktopSyncStep } from "./steps/DesktopSyncStep";
 import { DesktopUpdatesStep } from "./steps/DesktopUpdatesStep";
 import { desktopUpdates } from "@/lib/desktop-updates";
 import type { OnboardingStepDef } from "./onboarding-registry";
@@ -28,16 +27,6 @@ export const CORE_STEPS: OnboardingStepDef[] = [
     isRelevant: (ctx) => !ctx.pluginsManagedElsewhere && ctx.pluginSetupPending,
     forcePending: (ctx) => ctx.pluginSetupPending,
   },
-  {
-    id: "desktop-sync",
-    version: CORE_ONBOARDING_STEPS["desktop-sync"],
-    titleKey: "onboarding.desktopTitle",
-    icon: Monitor,
-    Component: DesktopSyncStep,
-    audience: "all",
-    position: 20,
-    isRelevant: (ctx) => ctx.isDesktop,
-  },
   {
     id: "desktop-updates",
     version: CORE_ONBOARDING_STEPS["desktop-updates"],
diff --git a/src/ui/onboarding/steps/DesktopSyncStep.tsx b/src/ui/onboarding/steps/DesktopSyncStep.tsx
deleted file mode 100644
index 687e44854..000000000
--- a/src/ui/onboarding/steps/DesktopSyncStep.tsx
+++ /dev/null
@@ -1,79 +0,0 @@
-import { useState } from "react";
-import { useTranslation } from "react-i18next";
-import { Cloud, Laptop } from "lucide-react";
-import { LinkServerDialog } from "@/settings/sync/LinkServerDialog";
-import { useSyncStatus } from "@/hooks/use-sync-status";
-import { setSyncStatus } from "@/lib/sync-status";
-import { notifySyncChanged } from "@/lib/linked-server";
-
-/**
- * Desktop only: use Termix on this device alone, or link it to a server.
- * Either choice can be changed later from Sync.
- */
-export function DesktopSyncStep() {
-  const { t } = useTranslation();
-  const status = useSyncStatus();
-  const [linkOpen, setLinkOpen] = useState(false);
-  const linked = !!status?.linked;
-
-  const options = [
-    {
-      id: "local",
-      icon: Laptop,
-      title: t("onboarding.desktopLocalTitle"),
-      body: t("onboarding.desktopLocalBody"),
-      selected: !linked,
-      onClick: () => {},
-    },
-    {
-      id: "link",
-      icon: Cloud,
-      title: t("onboarding.desktopLinkTitle"),
-      body: linked
-        ? t("onboarding.desktopLinked", {
-            server: status?.serverName || status?.serverUrl,
-          })
-        : t("onboarding.desktopLinkBody"),
-      selected: linked,
-      onClick: () => !linked && setLinkOpen(true),
-    },
-  ];
-
-  return (
-    <div className="flex flex-col gap-3">
-      <p className="text-xs text-muted-foreground">
-        {t("onboarding.desktopBody")}
-      </p>
-      <div className="flex flex-col gap-1.5">
-        {options.map(({ id, icon: Icon, title, body, selected, onClick }) => (
-          <button
-            key={id}
-            type="button"
-            onClick={onClick}
-            className={`flex items-start gap-2.5 border p-2.5 text-left transition-colors ${
-              selected
-                ? "border-accent-brand bg-accent-brand/10"
-                : "border-border bg-card hover:bg-muted/40"
-            }`}
-          >
-            <Icon size={14} className="mt-0.5 shrink-0 text-accent-brand" />
-            <span className="flex flex-col gap-1">
-              <span className="text-xs font-medium">{title}</span>
-              <span className="text-[10px] leading-snug text-muted-foreground">
-                {body}
-              </span>
-            </span>
-          </button>
-        ))}
-      </div>
-      <LinkServerDialog
-        open={linkOpen}
-        onOpenChange={setLinkOpen}
-        onLinked={(next) => {
-          setSyncStatus(next);
-          notifySyncChanged();
-        }}
-      />
-    </div>
-  );
-}
diff --git a/src/ui/plugin-host/sdk-ui.ts b/src/ui/plugin-host/sdk-ui.ts
index 3f59b7c04..8245fcf7c 100644
--- a/src/ui/plugin-host/sdk-ui.ts
+++ b/src/ui/plugin-host/sdk-ui.ts
@@ -491,21 +491,6 @@ export {
   type ShareTarget,
 } from "@/api/rbac-api";
 export { type BrandingSettings, getBranding } from "@/api/settings-api";
-export {
-  getSyncConflicts,
-  getSyncErrors,
-  retrySyncErrors,
-  settleSyncConflict,
-  type SyncBasicAuth,
-  type SyncConflictItem,
-  type SyncEntityInfo,
-  type SyncErrorItem,
-  syncNow,
-  type SyncProxyHeader,
-  type SyncStatus,
-  unlinkServer,
-  updateSyncSettings,
-} from "@/api/sync-api";
 export {
   getChannelReleases,
   getUpdateChannel,
@@ -553,7 +538,6 @@ export {
   getStatusClasses,
   useStatusColorScheme,
 } from "@/hooks/use-status-color-scheme";
-export { useSyncStatus } from "@/hooks/use-sync-status";
 export { useSshAuthProviders } from "@/hooks/useSshAuthProviders";
 export { changeAppLanguage, normalizeLanguageCode } from "@/i18n/i18n";
 export { LANGUAGES } from "@/i18n/languages";
@@ -603,7 +587,6 @@ export { getConnectedRemoteApi } from "@/lib/remote-server-api";
 export { roleLabel } from "@/lib/role-label";
 export type { StatusValue } from "@/lib/server-status-store";
 export { parseServerTime } from "@/lib/server-time";
-export { refreshSyncStatus, setSyncStatus } from "@/lib/sync-status";
 export { tabJumpHotkeyKeys } from "@/lib/tab-jump-hotkey";
 export {
   ACCENT_PRESET_COLORS,
@@ -740,8 +723,6 @@ export {
   hasVisibleFields,
   isFieldShown,
 } from "@/settings/settings-fields-util";
-export { LinkServerDialog } from "@/settings/sync/LinkServerDialog";
-export { ProxySettingsFields } from "@/settings/sync/ProxySettingsFields";
 export { useShellController } from "@/shell/controller/ShellControllerProvider";
 export {
   type KeybindingActionDef,
diff --git a/src/ui/settings/sync/LinkServerDialog.tsx b/src/ui/settings/sync/LinkServerDialog.tsx
deleted file mode 100644
index 57b8db76f..000000000
--- a/src/ui/settings/sync/LinkServerDialog.tsx
+++ /dev/null
@@ -1,455 +0,0 @@
-import { useEffect, useState } from "react";
-import { useTranslation } from "react-i18next";
-import { InlineView } from "@/components/surface/surface-scope";
-import { toast } from "sonner";
-import { AlertCircle, Loader2, X } from "lucide-react";
-import { Button } from "@/components/button";
-import { Input } from "@/components/input";
-import { Switch } from "@/components/switch";
-import { ElectronLoginForm } from "@/auth/ElectronLoginForm";
-import {
-  completeLink,
-  getLinkPreview,
-  probeServer,
-  reloginLink,
-  type ProbeProblem,
-  type ServerTarget,
-  type SyncStatus,
-} from "@/api/sync-api";
-import { ProxySettingsFields } from "./ProxySettingsFields";
-import {
-  forgetServerUrl,
-  getSavedServerUrls,
-  rememberServerUrl,
-} from "./saved-servers";
-import { DocsLink } from "@/components/docs-link";
-
-type Step = "server" | "signin" | "choose" | "finishing";
-
-interface LinkServerDialogProps {
-  open: boolean;
-  onOpenChange: (open: boolean) => void;
-  onLinked: (status: SyncStatus) => void;
-  /** Sign back in to the server this desktop is already linked to. */
-  relogin?: { serverUrl: string };
-}
-
-function problemText(
-  t: (key: string, options?: Record<string, unknown>) => string,
-  problem: ProbeProblem | undefined,
-  message: string | undefined,
-): string {
-  switch (problem) {
-    case "invalid_url":
-      return t("sync.problems.invalidUrl");
-    case "tls_untrusted":
-      return t("sync.problems.tlsUntrusted");
-    case "basic_auth_required":
-      return t("sync.problems.basicAuthRequired");
-    case "proxy_login":
-      return t("sync.problems.proxyLogin");
-    case "not_termix":
-      return t("sync.problems.notTermix");
-    case "version_mismatch":
-      return t("sync.problems.versionMismatch");
-    case "different_account":
-      return t("sync.problems.differentAccount");
-    default:
-      return message
-        ? t("sync.problems.unreachableWithReason", { reason: message })
-        : t("sync.problems.unreachable");
-  }
-}
-
-export function LinkServerDialog({
-  open,
-  onOpenChange,
-  onLinked,
-  relogin,
-}: LinkServerDialogProps) {
-  const { t } = useTranslation();
-  const [step, setStep] = useState<Step>(relogin ? "signin" : "server");
-  const [savedUrls, setSavedUrls] = useState<string[]>(getSavedServerUrls);
-  const [target, setTarget] = useState<ServerTarget>({
-    serverUrl: relogin?.serverUrl ?? "",
-    customHeaders: [],
-    basicAuth: null,
-    allowInvalidCertificate: false,
-  });
-  const [showAdvanced, setShowAdvanced] = useState(false);
-  const [checking, setChecking] = useState(false);
-  const [problem, setProblem] = useState<string | null>(null);
-  const [problemKind, setProblemKind] = useState<ProbeProblem | null>(null);
-  const [serverName, setServerName] = useState<string | undefined>();
-  const [token, setToken] = useState<string | null>(null);
-  const [counts, setCounts] = useState<Record<string, number>>({});
-  const [mode, setMode] = useState<"merge" | "replace">("merge");
-  const [finishError, setFinishError] = useState<string | null>(null);
-
-  useEffect(() => {
-    if (!open) return;
-    setStep(relogin ? "signin" : "server");
-    setProblem(null);
-    setProblemKind(null);
-    setToken(null);
-    setFinishError(null);
-    setMode("merge");
-    if (relogin) {
-      setTarget((current) => ({ ...current, serverUrl: relogin.serverUrl }));
-      return;
-    }
-    // An older version of the app may have saved a server address.
-    window.electronAPI
-      ?.invoke?.("get-previous-server-url")
-      .then((result) => {
-        const url = (result as { serverUrl?: string | null } | null)?.serverUrl;
-        if (url) {
-          setTarget((current) =>
-            current.serverUrl ? current : { ...current, serverUrl: url },
-          );
-        }
-      })
-      .catch(() => {});
-  }, [open, relogin]);
-
-  const handleCheck = async () => {
-    setChecking(true);
-    setProblem(null);
-    setProblemKind(null);
-    try {
-      const result = await probeServer(target);
-      if (!result.ok) {
-        setProblemKind(result.problem ?? null);
-        setProblem(problemText(t, result.problem, result.message));
-        if (
-          result.problem === "basic_auth_required" ||
-          result.problem === "proxy_login"
-        ) {
-          setShowAdvanced(true);
-        }
-        if (result.problem === "basic_auth_required" && !target.basicAuth) {
-          setTarget((current) => ({
-            ...current,
-            basicAuth: { username: "", password: "" },
-          }));
-        }
-        return;
-      }
-      setTarget((current) => ({
-        ...current,
-        serverUrl: result.serverUrl ?? current.serverUrl,
-      }));
-      setServerName(result.name);
-      setStep("signin");
-    } catch {
-      setProblem(problemText(t, "unreachable", undefined));
-    } finally {
-      setChecking(false);
-    }
-  };
-
-  const finish = async (sessionToken: string, chosen: "merge" | "replace") => {
-    setStep("finishing");
-    setFinishError(null);
-    try {
-      const status = await completeLink({
-        ...target,
-        token: sessionToken,
-        mode: chosen,
-        serverName,
-      });
-      rememberServerUrl(target.serverUrl);
-      toast.success(t("sync.wizard.linked"));
-      onLinked(status);
-      onOpenChange(false);
-    } catch (error) {
-      const data = (
-        error as {
-          response?: { data?: { problem?: ProbeProblem; message?: string } };
-        }
-      )?.response?.data;
-      setFinishError(problemText(t, data?.problem, data?.message));
-      setStep("choose");
-    }
-  };
-
-  const handleSignedIn = async (sessionToken: string | null) => {
-    if (!sessionToken) return;
-    if (relogin) {
-      try {
-        const status = await reloginLink(sessionToken);
-        toast.success(t("sync.wizard.signedInAgain"));
-        onLinked(status);
-        onOpenChange(false);
-      } catch (error) {
-        const data = (
-          error as {
-            response?: {
-              data?: {
-                error?: string;
-                problem?: ProbeProblem;
-                message?: string;
-              };
-            };
-          }
-        )?.response?.data;
-        throw new Error(
-          data?.error === "different_account"
-            ? t("sync.problems.differentAccount")
-            : problemText(t, data?.problem, data?.message),
-        );
-      }
-      return;
-    }
-    setToken(sessionToken);
-    const preview = await getLinkPreview().catch(() => ({}));
-    setCounts(preview);
-    const total = Object.values(preview).reduce((sum, count) => sum + count, 0);
-    if (total === 0) {
-      await finish(sessionToken, "merge");
-      return;
-    }
-    setStep("choose");
-  };
-
-  const localTotal = Object.values(counts).reduce(
-    (sum, count) => sum + count,
-    0,
-  );
-  const wide = step === "signin";
-
-  const title = relogin
-    ? t("sync.wizard.reloginTitle")
-    : t("sync.wizard.title");
-  const description =
-    step === "server"
-      ? t("sync.wizard.serverDescription")
-      : step === "signin"
-        ? t("sync.wizard.signinDescription", { url: target.serverUrl })
-        : step === "choose"
-          ? t("sync.wizard.chooseDescription")
-          : t("sync.wizard.finishingDescription");
-  const content = (
-    <>
-      {step === "server" && (
-        <form
-          className="flex flex-col gap-4"
-          onSubmit={(event) => {
-            event.preventDefault();
-            void handleCheck();
-          }}
-        >
-          <div className="flex flex-col gap-1.5">
-            <label className="text-xs font-semibold" htmlFor="sync-server-url">
-              {t("sync.wizard.serverUrl")}
-            </label>
-            <Input
-              id="sync-server-url"
-              autoFocus
-              className="rounded-none"
-              placeholder="https://termix.example.com"
-              value={target.serverUrl}
-              onChange={(event) =>
-                setTarget({ ...target, serverUrl: event.target.value })
-              }
-            />
-            <p className="text-[10px] text-muted-foreground">
-              {t("sync.wizard.serverUrlHint")}
-            </p>
-            {!relogin && savedUrls.length > 0 && (
-              <div className="flex flex-col gap-1 pt-1">
-                <span className="text-[10px] font-semibold uppercase tracking-wider text-muted-foreground">
-                  {t("sync.wizard.savedServers")}
-                </span>
-                {savedUrls.map((url) => (
-                  <div
-                    key={url}
-                    className="flex items-center border border-border hover:bg-muted"
-                  >
-                    <button
-                      type="button"
-                      className="flex-1 min-w-0 truncate px-2 py-1.5 text-left font-mono text-xs"
-                      onClick={() => setTarget({ ...target, serverUrl: url })}
-                    >
-                      {url}
-                    </button>
-                    <button
-                      type="button"
-                      title={t("sync.wizard.removeServer")}
-                      className="px-2 py-1.5 text-muted-foreground hover:text-destructive"
-                      onClick={() => setSavedUrls(forgetServerUrl(url))}
-                    >
-                      <X className="size-3" />
-                    </button>
-                  </div>
-                ))}
-              </div>
-            )}
-          </div>
-
-          {problem && (
-            <div className="flex gap-2 border border-destructive/40 bg-destructive/10 p-2.5 text-xs">
-              <AlertCircle className="size-4 shrink-0 text-destructive" />
-              <span>{problem}</span>
-            </div>
-          )}
-
-          {(problemKind === "tls_untrusted" ||
-            target.allowInvalidCertificate) && (
-            <div className="flex items-center justify-between gap-3 border border-border p-2.5">
-              <div className="flex flex-col gap-0.5">
-                <span className="text-xs font-medium">
-                  {t("sync.proxy.allowInvalidCertificate")}
-                </span>
-                <span className="text-[10px] text-muted-foreground">
-                  {t("sync.proxy.allowInvalidCertificateHint")}
-                </span>
-              </div>
-              <Switch
-                checked={!!target.allowInvalidCertificate}
-                onCheckedChange={(checked) =>
-                  setTarget({ ...target, allowInvalidCertificate: checked })
-                }
-              />
-            </div>
-          )}
-
-          <button
-            type="button"
-            className="self-start text-[10px] font-bold uppercase tracking-widest text-muted-foreground hover:text-foreground"
-            onClick={() => setShowAdvanced((value) => !value)}
-          >
-            {showAdvanced
-              ? t("sync.wizard.hideProxySettings")
-              : t("sync.wizard.showProxySettings")}
-          </button>
-          {showAdvanced && (
-            <ProxySettingsFields
-              customHeaders={target.customHeaders ?? []}
-              basicAuth={target.basicAuth ?? null}
-              onChange={(next) => setTarget({ ...target, ...next })}
-            />
-          )}
-
-          <div className="flex justify-end gap-2">
-            <Button
-              type="button"
-              variant="outline"
-              className="rounded-none"
-              onClick={() => onOpenChange(false)}
-            >
-              {t("common.cancel")}
-            </Button>
-            <Button
-              variant="outline"
-              type="submit"
-              className="rounded-none border-accent-brand/40 text-accent-brand hover:bg-accent-brand/10 hover:text-accent-brand dark:border-accent-brand/40 dark:bg-transparent dark:hover:bg-accent-brand/10"
-              disabled={checking || !target.serverUrl.trim()}
-            >
-              {checking && <Loader2 className="size-4 animate-spin" />}
-              {t("sync.wizard.continue")}
-            </Button>
-          </div>
-        </form>
-      )}
-
-      {step === "signin" && (
-        <div className="flex-1 min-h-0">
-          <ElectronLoginForm
-            serverUrl={target.serverUrl}
-            targetPurpose="link"
-            onAuthSuccess={handleSignedIn}
-            onChangeServer={() =>
-              relogin ? onOpenChange(false) : setStep("server")
-            }
-          />
-        </div>
-      )}
-
-      {step === "choose" && (
-        <div className="flex flex-col gap-3">
-          {finishError && (
-            <div className="flex gap-2 border border-destructive/40 bg-destructive/10 p-2.5 text-xs">
-              <AlertCircle className="size-4 shrink-0 text-destructive" />
-              <span>{finishError}</span>
-            </div>
-          )}
-          {(
-            [
-              {
-                value: "merge",
-                title: t("sync.wizard.mergeTitle"),
-                body: t("sync.wizard.mergeBody", { count: localTotal }),
-              },
-              {
-                value: "replace",
-                title: t("sync.wizard.replaceTitle"),
-                body: t("sync.wizard.replaceBody", { count: localTotal }),
-              },
-            ] as const
-          ).map((option) => (
-            <button
-              key={option.value}
-              type="button"
-              onClick={() => setMode(option.value)}
-              className={`text-left border p-3 flex flex-col gap-1 transition-colors ${
-                mode === option.value
-                  ? "border-accent-brand bg-accent-brand/10"
-                  : "border-border hover:bg-muted/40"
-              }`}
-            >
-              <span className="text-sm font-semibold">{option.title}</span>
-              <span className="text-xs text-muted-foreground">
-                {option.body}
-              </span>
-            </button>
-          ))}
-          <div className="flex justify-end gap-2">
-            <Button
-              type="button"
-              variant="outline"
-              className="rounded-none"
-              onClick={() => onOpenChange(false)}
-            >
-              {t("common.cancel")}
-            </Button>
-            <Button
-              variant="outline"
-              type="button"
-              className="rounded-none border-accent-brand/40 text-accent-brand hover:bg-accent-brand/10 hover:text-accent-brand dark:border-accent-brand/40 dark:bg-transparent dark:hover:bg-accent-brand/10"
-              disabled={!token}
-              onClick={() => token && void finish(token, mode)}
-            >
-              {t("sync.wizard.link")}
-            </Button>
-          </div>
-        </div>
-      )}
-
-      {step === "finishing" && (
-        <div className="flex items-center gap-3 py-6 text-sm text-muted-foreground">
-          <Loader2 className="size-5 animate-spin text-accent-brand" />
-          {t("sync.wizard.linking")}
-        </div>
-      )}
-    </>
-  );
-
-  // The wizard takes over the panel, tab or onboarding step it opens from.
-  return (
-    <InlineView
-      open={open}
-      onOpenChange={onOpenChange}
-      title={title}
-      width="wide"
-      scroll={!wide}
-    >
-      {!wide && (
-        <p className="text-xs text-muted-foreground">
-          {description} {step === "server" && <DocsLink core="desktopSync" />}
-        </p>
-      )}
-      {content}
-    </InlineView>
-  );
-}
diff --git a/src/ui/settings/sync/ProxySettingsFields.tsx b/src/ui/settings/sync/ProxySettingsFields.tsx
deleted file mode 100644
index 7b848b6b3..000000000
--- a/src/ui/settings/sync/ProxySettingsFields.tsx
+++ /dev/null
@@ -1,147 +0,0 @@
-import { useTranslation } from "react-i18next";
-import { Plus, Trash2 } from "lucide-react";
-import { Input } from "@/components/input";
-import { PasswordInput } from "@/components/password-input";
-import { Switch } from "@/components/switch";
-import type { SyncBasicAuth, SyncProxyHeader } from "@/api/sync-api";
-
-interface ProxySettingsFieldsProps {
-  customHeaders: SyncProxyHeader[];
-  basicAuth: SyncBasicAuth | null;
-  onChange: (next: {
-    customHeaders?: SyncProxyHeader[];
-    basicAuth?: SyncBasicAuth | null;
-  }) => void;
-}
-
-/**
- * What a reverse proxy in front of the server wants: extra headers (a
- * Cloudflare Access service token, a gateway key) and basic auth.
- */
-export function ProxySettingsFields({
-  customHeaders,
-  basicAuth,
-  onChange,
-}: ProxySettingsFieldsProps) {
-  const { t } = useTranslation();
-
-  const setHeader = (index: number, patch: Partial<SyncProxyHeader>) => {
-    onChange({
-      customHeaders: customHeaders.map((header, i) =>
-        i === index ? { ...header, ...patch } : header,
-      ),
-    });
-  };
-
-  return (
-    <div className="flex flex-col gap-4 border border-border p-3">
-      <div className="flex flex-col gap-2">
-        <div className="flex flex-col gap-0.5">
-          <span className="text-xs font-semibold">
-            {t("sync.proxy.headersTitle")}
-          </span>
-          <span className="text-[10px] text-muted-foreground">
-            {t("sync.proxy.headersHint")}
-          </span>
-        </div>
-        {customHeaders.map((header, index) => (
-          <div key={index} className="flex items-center gap-2">
-            <Input
-              className="rounded-none h-8 text-xs"
-              placeholder={t("sync.proxy.headerName")}
-              value={header.name}
-              onChange={(event) =>
-                setHeader(index, { name: event.target.value })
-              }
-            />
-            <PasswordInput
-              className="rounded-none h-8 text-xs"
-              placeholder={
-                header.set
-                  ? t("sync.proxy.savedValue")
-                  : t("sync.proxy.headerValue")
-              }
-              value={header.value}
-              onChange={(event) =>
-                setHeader(index, { value: event.target.value })
-              }
-            />
-            <button
-              type="button"
-              aria-label={t("sync.proxy.removeHeader")}
-              className="p-1.5 text-muted-foreground hover:text-destructive"
-              onClick={() =>
-                onChange({
-                  customHeaders: customHeaders.filter((_, i) => i !== index),
-                })
-              }
-            >
-              <Trash2 className="size-3.5" />
-            </button>
-          </div>
-        ))}
-        <button
-          type="button"
-          className="self-start flex items-center gap-1 text-[10px] font-bold uppercase tracking-widest text-muted-foreground hover:text-foreground"
-          onClick={() =>
-            onChange({
-              customHeaders: [...customHeaders, { name: "", value: "" }],
-            })
-          }
-        >
-          <Plus className="size-3" />
-          {t("sync.proxy.addHeader")}
-        </button>
-      </div>
-
-      <div className="flex flex-col gap-2 border-t border-border pt-3">
-        <div className="flex items-center justify-between gap-3">
-          <div className="flex flex-col gap-0.5">
-            <span className="text-xs font-semibold">
-              {t("sync.proxy.basicAuthTitle")}
-            </span>
-            <span className="text-[10px] text-muted-foreground">
-              {t("sync.proxy.basicAuthHint")}
-            </span>
-          </div>
-          <Switch
-            checked={!!basicAuth}
-            onCheckedChange={(checked) =>
-              onChange({
-                basicAuth: checked ? { username: "", password: "" } : null,
-              })
-            }
-          />
-        </div>
-        {basicAuth && (
-          <div className="flex items-center gap-2">
-            <Input
-              className="rounded-none h-8 text-xs"
-              placeholder={t("sync.proxy.username")}
-              value={basicAuth.username}
-              onChange={(event) =>
-                onChange({
-                  basicAuth: { ...basicAuth, username: event.target.value },
-                })
-              }
-            />
-            <PasswordInput
-              className="rounded-none h-8 text-xs"
-              placeholder={
-                basicAuth.set
-                  ? t("sync.proxy.savedValue")
-                  : t("sync.proxy.password")
-              }
-              value={basicAuth.password}
-              onChange={(event) =>
-                onChange({
-                  basicAuth: { ...basicAuth, password: event.target.value },
-                })
-              }
-            />
-          </div>
-        )}
-      </div>
-    </div>
-  );
-}
diff --git a/src/ui/settings/sync/saved-servers.ts b/src/ui/settings/sync/saved-servers.ts
deleted file mode 100644
index 3ed9e0a35..000000000
--- a/src/ui/settings/sync/saved-servers.ts
+++ /dev/null
@@ -1,39 +0,0 @@
-// Same key as 2.8, so a desktop keeps the servers it already used.
-const SAVED_URLS_KEY = "termix_saved_server_urls";
-const MAX_SAVED_URLS = 5;
-
-export function getSavedServerUrls(): string[] {
-  try {
-    const parsed = JSON.parse(localStorage.getItem(SAVED_URLS_KEY) ?? "[]");
-    return Array.isArray(parsed)
-      ? parsed.filter((url): url is string => typeof url === "string")
-      : [];
-  } catch {
-    return [];
-  }
-}
-
-function write(urls: string[]): void {
-  try {
-    localStorage.setItem(SAVED_URLS_KEY, JSON.stringify(urls));
-  } catch {
-    // Storage can be unavailable.
-  }
-}
-
-export function rememberServerUrl(url: string): string[] {
-  const trimmed = url.trim().replace(/\/+$/, "");
-  if (!trimmed) return getSavedServerUrls();
-  const urls = [
-    trimmed,
-    ...getSavedServerUrls().filter((saved) => saved !== trimmed),
-  ].slice(0, MAX_SAVED_URLS);
-  write(urls);
-  return urls;
-}
-
-export function forgetServerUrl(url: string): string[] {
-  const urls = getSavedServerUrls().filter((saved) => saved !== url);
-  write(urls);
-  return urls;
-}
diff --git a/src/ui/shell/controller/ShellControllerProvider.tsx b/src/ui/shell/controller/ShellControllerProvider.tsx
index a329dbb88..1354fb953 100644
--- a/src/ui/shell/controller/ShellControllerProvider.tsx
+++ b/src/ui/shell/controller/ShellControllerProvider.tsx
@@ -11,7 +11,6 @@ import {
   useState,
 } from "react";
 import { useIsMobile } from "@/hooks/use-mobile";
-import { useSyncStatus } from "@/hooks/use-sync-status";
 import { isElectron } from "@/lib/electron";
 import {
   useConfirm,
@@ -128,10 +127,6 @@ export function ShellControllerProvider({
   openSingletonRef.current = tabsState.openSingletonTab;
   const { tabs, activeTabId } = tabsState;
 
-  // Keeps the desktop's sync status polled while the app is open; a pass
-  // that changed data tells the panels to reload.
-  useSyncStatus();
-
   const palette: ShellPalette = {
     isOpen: paletteOpen,
     open: () => setPaletteOpen(true),
diff --git a/src/ui/sidebar/rail-items.ts b/src/ui/sidebar/rail-items.ts
index 1309da483..68f55452f 100644
--- a/src/ui/sidebar/rail-items.ts
+++ b/src/ui/sidebar/rail-items.ts
@@ -1,5 +1,4 @@
 import {
-  Cloud,
   KeyRound,
   Plug,
   Server,
@@ -12,7 +11,6 @@ import {
 import { useMemo, useSyncExternalStore } from "react";
 import { usePermissions } from "@/hooks/use-permissions";
 import { useAreaPreferences } from "@/contexts/UiPreferencesContext";
-import { useSyncAttentionCount } from "@/hooks/use-sync-status";
 import { isElectron } from "@/lib/electron";
 import { createRegistry } from "@/lib/registry";
 import { getPanel } from "@/shell/panel-registry";
@@ -111,15 +109,6 @@ export const RAIL_ITEMS: RailItemDef[] = [
     mobilePrimary: true,
     group: "tools",
   },
-  {
-    id: "sync",
-    icon: Cloud,
-    labelKey: "nav.sync",
-    electronOnly: true,
-    placement: "footer",
-    group: "system",
-    useBadge: useSyncAttentionCount,
-  },
   {
     id: "plugins",
     icon: Puzzle,
diff --git a/src/ui/tests/auth/ElectronLoginForm.test.tsx b/src/ui/tests/auth/ElectronLoginForm.test.tsx
deleted file mode 100644
index 5b78f3b00..000000000
--- a/src/ui/tests/auth/ElectronLoginForm.test.tsx
+++ /dev/null
@@ -1,140 +0,0 @@
-import { render, screen, waitFor } from "@testing-library/react";
-import { describe, expect, it, vi } from "vitest";
-import { ElectronLoginForm } from "../../auth/ElectronLoginForm";
-
-vi.mock("react-i18next", () => ({
-  useTranslation: () => ({ t: (key: string) => key }),
-}));
-
-describe("ElectronLoginForm", () => {
-  it("delegates WebAuthn permissions to the embedded login page", () => {
-    render(
-      <ElectronLoginForm
-        serverUrl="https://termix.example.com"
-        onAuthSuccess={vi.fn()}
-        onChangeServer={vi.fn()}
-      />,
-    );
-
-    const permissions = screen
-      .getByTitle("auth.serverAuthentication")
-      .getAttribute("allow");
-
-    expect(permissions).toContain("publickey-credentials-get");
-    expect(permissions).toContain("publickey-credentials-create");
-  });
-
-  it.each([
-    "auth_component",
-    "second_factor_auth_component",
-    "method_auth_component",
-  ])("accepts a login hand-off from %s", async (source) => {
-    const onAuthSuccess = vi.fn();
-    render(
-      <ElectronLoginForm
-        serverUrl="https://termix.example.com"
-        onAuthSuccess={onAuthSuccess}
-        onChangeServer={vi.fn()}
-      />,
-    );
-    const frame = screen.getByTitle(
-      "auth.serverAuthentication",
-    ) as HTMLIFrameElement;
-    window.dispatchEvent(
-      new MessageEvent("message", {
-        source: frame.contentWindow,
-        origin: "https://termix.example.com",
-        data: {
-          type: "AUTH_SUCCESS",
-          platform: "desktop",
-          source,
-          token: "jwt-1",
-        },
-      }),
-    );
-    await waitFor(() => expect(onAuthSuccess).toHaveBeenCalledWith("jwt-1"));
-  });
-
-  it("ignores messages once the frame has left the server's origin", async () => {
-    const onAuthSuccess = vi.fn();
-    const externalBrowserLogin = vi.fn();
-    (window as unknown as { electronAPI?: unknown }).electronAPI = {
-      externalBrowserLogin,
-    };
-    render(
-      <ElectronLoginForm
-        serverUrl="https://termix.example.com/"
-        onAuthSuccess={onAuthSuccess}
-        onChangeServer={vi.fn()}
-      />,
-    );
-    const frame = screen.getByTitle(
-      "auth.serverAuthentication",
-    ) as HTMLIFrameElement;
-    for (const data of [
-      {
-        type: "AUTH_SUCCESS",
-        platform: "desktop",
-        source: "auth_component",
-        token: "attacker-jwt",
-      },
-      {
-        type: "OIDC_SYSTEM_BROWSER_AUTH",
-        authUrl: "https://evil.example/",
-        callbackPort: 17832,
-      },
-    ]) {
-      window.dispatchEvent(
-        new MessageEvent("message", {
-          source: frame.contentWindow,
-          origin: "https://evil.example",
-          data,
-        }),
-      );
-    }
-    await new Promise((resolve) => setTimeout(resolve, 0));
-    expect(onAuthSuccess).not.toHaveBeenCalled();
-    expect(externalBrowserLogin).not.toHaveBeenCalled();
-    delete (window as unknown as { electronAPI?: unknown }).electronAPI;
-  });
-
-  it("replies to the server's origin only", async () => {
-    (window as unknown as { electronAPI?: unknown }).electronAPI = {
-      externalBrowserLogin: vi.fn().mockResolvedValue({
-        success: false,
-        secondFactor: true,
-        tempToken: "temp-1",
-      }),
-    };
-    render(
-      <ElectronLoginForm
-        serverUrl="https://termix.example.com/"
-        onAuthSuccess={vi.fn()}
-        onChangeServer={vi.fn()}
-      />,
-    );
-    const frame = screen.getByTitle(
-      "auth.serverAuthentication",
-    ) as HTMLIFrameElement;
-    const postMessage = vi.spyOn(frame.contentWindow!, "postMessage");
-    window.dispatchEvent(
-      new MessageEvent("message", {
-        source: frame.contentWindow,
-        origin: "https://termix.example.com",
-        data: {
-          type: "OIDC_SYSTEM_BROWSER_AUTH",
-          authUrl: "https://idp.example.com/authorize",
-          callbackPort: 17832,
-          providerId: -1,
-        },
-      }),
-    );
-    await waitFor(() =>
-      expect(postMessage).toHaveBeenCalledWith(
-        expect.objectContaining({ tempToken: "temp-1" }),
-        "https://termix.example.com",
-      ),
-    );
-    delete (window as unknown as { electronAPI?: unknown }).electronAPI;
-  });
-});
diff --git a/src/ui/tests/lib/sync-status.test.ts b/src/ui/tests/lib/sync-status.test.ts
deleted file mode 100644
index d27da47bd..000000000
--- a/src/ui/tests/lib/sync-status.test.ts
+++ /dev/null
@@ -1,55 +0,0 @@
-import { afterEach, beforeEach, describe, expect, it, vi } from "vitest";
-
-const getSyncStatus = vi.hoisted(() => vi.fn());
-const notifySyncChanged = vi.hoisted(() => vi.fn());
-
-vi.mock("@/lib/electron", () => ({ isElectron: () => true }));
-vi.mock("@/api/sync-api", () => ({ getSyncStatus }));
-vi.mock("@/lib/linked-server", () => ({ notifySyncChanged }));
-
-const store = await import("@/lib/sync-status");
-
-const flush = () => new Promise((resolve) => setTimeout(resolve, 0));
-
-describe("sync status store", () => {
-  let unsubscribe: () => void = () => {};
-  const events: string[] = [];
-  const record = (event: Event) => events.push(event.type);
-
-  beforeEach(() => {
-    events.length = 0;
-    for (const type of ["hosts:refresh", "termix:hosts-changed"]) {
-      window.addEventListener(type, record);
-    }
-  });
-
-  afterEach(() => {
-    unsubscribe();
-    for (const type of ["hosts:refresh", "termix:hosts-changed"]) {
-      window.removeEventListener(type, record);
-    }
-  });
-
-  it("polls while subscribed and tells views to reload after a pass", async () => {
-    getSyncStatus.mockResolvedValue({
-      linked: true,
-      lastSyncAt: "2026-09-25T10:00:00Z",
-      entities: [],
-    });
-    const listener = vi.fn();
-    unsubscribe = store.subscribeSyncStatus(listener);
-    await flush();
-    expect(store.getSyncStatusSnapshot()?.linked).toBe(true);
-    expect(listener).toHaveBeenCalled();
-    // The first read only sets the baseline.
-    expect(events).toEqual([]);
-
-    store.setSyncStatus({
-      linked: true,
-      lastSyncAt: "2026-09-25T10:05:00Z",
-      entities: [],
-    });
-    expect(events).toEqual(["hosts:refresh", "termix:hosts-changed"]);
-    expect(notifySyncChanged).toHaveBeenCalled();
-  });
-});
diff --git a/src/ui/tests/onboarding/onboarding-steps.test.ts b/src/ui/tests/onboarding/onboarding-steps.test.ts
index 70315b20c..b6a46c8e6 100644
--- a/src/ui/tests/onboarding/onboarding-steps.test.ts
+++ b/src/ui/tests/onboarding/onboarding-steps.test.ts
@@ -83,18 +83,11 @@ describe("CORE_STEPS", () => {
     expect(CORE_STEPS.find((s) => s.id === "plugins")?.required).toBe(true);
   });
 
-  it("asks how the desktop app is used only on the desktop", () => {
-    expect(ids(ctx({ isDesktop: true }))).toEqual(["desktop-sync"]);
-  });
-
   it("asks how the desktop app updates when it has an updater", () => {
     const win = window as unknown as { electronAPI?: unknown };
     win.electronAPI = { isElectron: true, updates: {} };
     try {
-      expect(ids(ctx({ isDesktop: true }))).toEqual([
-        "desktop-sync",
-        "desktop-updates",
-      ]);
+      expect(ids(ctx({ isDesktop: true }))).toEqual(["desktop-updates"]);
       expect(ids(ctx())).not.toContain("desktop-updates");
     } finally {
       delete win.electronAPI;
diff --git a/src/ui/tests/settings/sync/LinkServerDialog.test.tsx b/src/ui/tests/settings/sync/LinkServerDialog.test.tsx
deleted file mode 100644
index fc79c405c..000000000
--- a/src/ui/tests/settings/sync/LinkServerDialog.test.tsx
+++ /dev/null
@@ -1,31 +0,0 @@
-import { cleanup, render, screen } from "@testing-library/react";
-import { afterEach, describe, expect, it, vi } from "vitest";
-
-vi.mock("@/api/sync-api", () => ({
-  probeServer: vi.fn(),
-  getLinkPreview: vi.fn(),
-  completeLink: vi.fn(),
-  reloginLink: vi.fn(),
-}));
-vi.mock("@/auth/ElectronLoginForm", () => ({ ElectronLoginForm: () => null }));
-vi.mock("sonner", () => ({ toast: { success: vi.fn(), error: vi.fn() } }));
-vi.mock("react-i18next", () => ({
-  useTranslation: () => ({ t: (key: string) => key }),
-}));
-
-const { SurfaceScope } = await import("@/components/surface/surface-scope");
-const { LinkServerDialog } = await import("@/settings/sync/LinkServerDialog");
-
-afterEach(cleanup);
-
-describe("LinkServerDialog", () => {
-  it("opens inline in the surface instead of a popup", () => {
-    render(
-      <SurfaceScope kind="tab">
-        <LinkServerDialog open onOpenChange={() => {}} onLinked={() => {}} />
-      </SurfaceScope>,
-    );
-    expect(screen.getByText("sync.wizard.title")).toBeTruthy();
-    expect(screen.queryByRole("dialog")).toBeNull();
-  });
-});
diff --git a/src/ui/tests/settings/sync/saved-servers.test.ts b/src/ui/tests/settings/sync/saved-servers.test.ts
deleted file mode 100644
index 02dcc888d..000000000
--- a/src/ui/tests/settings/sync/saved-servers.test.ts
+++ /dev/null
@@ -1,29 +0,0 @@
-import { afterEach, describe, expect, it } from "vitest";
-import {
-  forgetServerUrl,
-  getSavedServerUrls,
-  rememberServerUrl,
-} from "@/settings/sync/saved-servers";
-
-afterEach(() => localStorage.clear());
-
-describe("saved server urls", () => {
-  it("keeps the newest five, without duplicates or trailing slashes", () => {
-    for (let i = 1; i <= 6; i++) rememberServerUrl(`https://s${i}.example/`);
-    rememberServerUrl("https://s4.example");
-    expect(getSavedServerUrls()).toEqual([
-      "https://s4.example",
-      "https://s6.example",
-      "https://s5.example",
-      "https://s3.example",
-      "https://s2.example",
-    ]);
-  });
-
-  it("forgets a server and survives bad storage", () => {
-    rememberServerUrl("https://a.example");
-    expect(forgetServerUrl("https://a.example")).toEqual([]);
-    localStorage.setItem("termix_saved_server_urls", "{broken");
-    expect(getSavedServerUrls()).toEqual([]);
-  });
-});
diff --git a/src/ui/tests/shell/controller/ShellControllerProvider.test.tsx b/src/ui/tests/shell/controller/ShellControllerProvider.test.tsx
index fb13820cb..66f82d6c6 100644
--- a/src/ui/tests/shell/controller/ShellControllerProvider.test.tsx
+++ b/src/ui/tests/shell/controller/ShellControllerProvider.test.tsx
@@ -15,10 +15,6 @@ const api = vi.hoisted(() => ({
   createSSHHost: vi.fn(async () => ({})),
 }));
 vi.mock("@/main-axios", () => api);
-vi.mock("@/hooks/use-sync-status", () => ({
-  useSyncStatus: () => undefined,
-  useSyncAttentionCount: () => 0,
-}));
 
 import {
   ShellControllerProvider,
diff --git a/src/ui/tests/shell/controller/plugin-shell.test.tsx b/src/ui/tests/shell/controller/plugin-shell.test.tsx
index a0542310d..05a20232b 100644
--- a/src/ui/tests/shell/controller/plugin-shell.test.tsx
+++ b/src/ui/tests/shell/controller/plugin-shell.test.tsx
@@ -15,10 +15,6 @@ vi.mock("@/main-axios", () => ({
   patchOpenTab: vi.fn(async () => {}),
   createSSHHost: vi.fn(async () => ({})),
 }));
-vi.mock("@/hooks/use-sync-status", () => ({
-  useSyncStatus: () => undefined,
-  useSyncAttentionCount: () => 0,
-}));
 vi.mock("@/hooks/use-permissions", () => ({
   usePermissions: () => ({
     permissions: ["hosts.view"],
diff --git a/src/ui/tests/shell/layout/LayoutHost.test.tsx b/src/ui/tests/shell/layout/LayoutHost.test.tsx
index 254130785..bbc5030e9 100644
--- a/src/ui/tests/shell/layout/LayoutHost.test.tsx
+++ b/src/ui/tests/shell/layout/LayoutHost.test.tsx
@@ -14,10 +14,6 @@ vi.mock("@/main-axios", () => ({
   patchOpenTab: vi.fn(async () => {}),
   createSSHHost: vi.fn(async () => ({})),
 }));
-vi.mock("@/hooks/use-sync-status", () => ({
-  useSyncStatus: () => undefined,
-  useSyncAttentionCount: () => 0,
-}));
 
 const lookApi = vi.hoisted(() => ({
   getLook: vi.fn(),
diff --git a/src/ui/tests/shell/stage/TabPortals.test.tsx b/src/ui/tests/shell/stage/TabPortals.test.tsx
index 1cd5948a7..b95832f06 100644
--- a/src/ui/tests/shell/stage/TabPortals.test.tsx
+++ b/src/ui/tests/shell/stage/TabPortals.test.tsx
@@ -15,10 +15,6 @@ vi.mock("@/main-axios", () => ({
   patchOpenTab: vi.fn(async () => {}),
   createSSHHost: vi.fn(async () => ({})),
 }));
-vi.mock("@/hooks/use-sync-status", () => ({
-  useSyncStatus: () => undefined,
-  useSyncAttentionCount: () => 0,
-}));
 const lookApi = vi.hoisted(() => ({
   getLook: vi.fn(),
   saveUserLook: vi.fn(async () => {}),
diff --git a/src/ui/tests/shell/stage/TabStage.test.tsx b/src/ui/tests/shell/stage/TabStage.test.tsx
index d22bedba4..623dd6b14 100644
--- a/src/ui/tests/shell/stage/TabStage.test.tsx
+++ b/src/ui/tests/shell/stage/TabStage.test.tsx
@@ -15,10 +15,6 @@ vi.mock("@/main-axios", () => ({
   patchOpenTab: vi.fn(async () => {}),
   createSSHHost: vi.fn(async () => ({})),
 }));
-vi.mock("@/hooks/use-sync-status", () => ({
-  useSyncStatus: () => undefined,
-  useSyncAttentionCount: () => 0,
-}));
 
 import type { TabRenderProps } from "@/shell/tab-registry";
 import { registerTabType } from "@/shell/tab-registry";
diff --git a/src/ui/tests/sidebar/rail-items.test.ts b/src/ui/tests/sidebar/rail-items.test.ts
index b58439b51..5fc311d07 100644
--- a/src/ui/tests/sidebar/rail-items.test.ts
+++ b/src/ui/tests/sidebar/rail-items.test.ts
@@ -58,13 +58,13 @@ describe("RAIL_ITEMS", () => {
     // "port-forwarding" to the tunnels plugin's, "serial" to the serial
     // plugin's, "collab" to the session-sharing plugin's, and "session-logs"
     // to the session-recording plugin's, "termix-id" to the termix-identity
-    // plugin's, "ssh-tools" and "macros" to the ssh-terminal plugin's.
+    // plugin's, "ssh-tools" and "macros" to the ssh-terminal plugin's, and "sync" to
+    // the sync plugin's.
     expect(RAIL_ITEMS.map((item) => item.id)).toEqual([
       "hosts",
       "credentials",
       "connections",
       "quick-connect",
-      "sync",
       "plugins",
     ]);
   });