diff --git a/packages/app/src/app.tsx b/packages/app/src/app.tsx
index 25d2e3749a..42284ee2c4 100644
--- a/packages/app/src/app.tsx
+++ b/packages/app/src/app.tsx
@@ -47,7 +47,7 @@ import { ServerSyncProvider, useServerSync } from "@/context/server-sync"
 import { GlobalProvider, useGlobal } from "@/context/global"
 import { HighlightsProvider } from "@/context/highlights"
 import { LanguageProvider, type Locale, useLanguage } from "@/context/language"
-import { LayoutProvider } from "@/context/layout"
+import { currentRoute, LayoutProvider } from "@/context/layout"
 import { ModelsProvider } from "@/context/models"
 import { NotificationProvider } from "@/context/notification"
 import { PermissionProvider } from "@/context/permission"
@@ -237,6 +237,44 @@ function UiI18nBridge(props: ParentProps) {
   return <I18nProvider value={{ locale: language.intl, t: language.t }}>{props.children}</I18nProvider>
 }
 
+function LayoutCompatibility(props: ParentProps) {
+  const global = useGlobal()
+  const location = useLocation()
+  const server = useServer()
+  const settings = useSettings()
+  const tabs = useTabs()
+  const connection = createMemo(() => {
+    const route = currentRoute(location.pathname, location.search)
+    if (route.type === "draft" && !tabs.ready()) return
+    const key =
+      route.type === "draft"
+        ? tabs.store.find((tab): tab is DraftTab => tab.type === "draft" && tab.draftID === route.draftID)?.server
+        : route.type === "home"
+          ? undefined
+          : route.server
+    if (!key) return server.current
+    return global.servers.list().find((item) => ServerConnection.key(item) === key)
+  })
+  const protocol = createMemo(() => {
+    const value = connection()
+    if (!value) return
+    return global.ensureServerCtx(value).sdk.protocolKind()
+  })
+
+  createEffect(() => {
+    const value = protocol()
+    if (!value) return
+    settings.general.setNewLayoutRequired(value === "v2")
+  })
+  const ready = createMemo(() => {
+    const value = protocol()
+    if (!value) return false
+    return settings.general.newLayoutRequired() === (value === "v2")
+  })
+
+  return <Show when={ready()}>{props.children}</Show>
+}
+
 declare global {
   interface Window {
     __OPENCODE__?: {
@@ -558,15 +596,17 @@ export function AppInterface(props: {
                 component={props.router ?? Router}
                 root={(routerProps) => (
                   <TabsProvider>
-                    <PermissionProvider>
-                      <NotificationProvider>
-                        <ServerShell>
-                          <Show when={useSettings().general.newLayoutDesigns()} fallback={routerProps.children}>
-                            <NewAppLayout serverScoped={props.serverScoped}>{routerProps.children}</NewAppLayout>
-                          </Show>
-                        </ServerShell>
-                      </NotificationProvider>
-                    </PermissionProvider>
+                    <LayoutCompatibility>
+                      <PermissionProvider>
+                        <NotificationProvider>
+                          <ServerShell>
+                            <Show when={useSettings().general.newLayoutDesigns()} fallback={routerProps.children}>
+                              <NewAppLayout serverScoped={props.serverScoped}>{routerProps.children}</NewAppLayout>
+                            </Show>
+                          </ServerShell>
+                        </NotificationProvider>
+                      </PermissionProvider>
+                    </LayoutCompatibility>
                   </TabsProvider>
                 )}
               >
diff --git a/packages/app/src/components/dialog-custom-provider.tsx b/packages/app/src/components/dialog-custom-provider.tsx
index 9e04cd83ad..5db684a2da 100644
--- a/packages/app/src/components/dialog-custom-provider.tsx
+++ b/packages/app/src/components/dialog-custom-provider.tsx
@@ -131,6 +131,7 @@ export function CustomProviderForm(props: { autofocus?: boolean } = {}) {
 
   const saveMutation = useMutation(() => ({
     mutationFn: async (result: NonNullable<ReturnType<typeof validate>>) => {
+      if ((await serverSDK().protocol) !== "v1") throw new Error("Custom providers are unavailable on this server")
       const disabledProviders = serverSync().data.config.disabled_providers ?? []
       const nextDisabled = disabledProviders.filter((id) => id !== result.providerID)
 
diff --git a/packages/app/src/components/settings-general.tsx b/packages/app/src/components/settings-general.tsx
index 3beb97225a..3bd4cd10cc 100644
--- a/packages/app/src/components/settings-general.tsx
+++ b/packages/app/src/components/settings-general.tsx
@@ -13,7 +13,7 @@ import { useLanguage } from "@/context/language"
 import { usePermission } from "@/context/permission"
 import { usePlatform, type DisplayBackend } from "@/context/platform"
 import { useServerSync } from "@/context/server-sync"
-import { useServerSDK } from "@/context/server-sdk"
+import { useServerProtocol, useServerSDK } from "@/context/server-sdk"
 import { useUpdaterAction } from "./updater-action"
 import {
   monoDefault,
@@ -125,10 +125,12 @@ export const SettingsGeneral: Component = () => {
 
   const serverSync = useServerSync()
   const serverSdk = useServerSDK()
+  const protocol = useServerProtocol()
 
   const [shells] = createResource(
-    () =>
-      serverSdk()
+    () => (protocol() === "v1" ? serverSdk() : undefined),
+    (sdk) =>
+      sdk
         .client.pty.shells()
         .then((res) => res.data ?? [])
         .catch(() => [] as ShellOption[]),
@@ -322,27 +324,29 @@ export const SettingsGeneral: Component = () => {
           </div>
         </SettingsRow>
 
-        <SettingsRow
-          title={language.t("settings.general.row.shell.title")}
-          description={language.t("settings.general.row.shell.description")}
-        >
-          <Select
-            data-action="settings-shell"
-            options={shellOptions()}
-            current={shellOptions().find((o) => o.value === currentShell()) ?? autoOption}
-            value={(o) => o.id}
-            label={(o) => o.label}
-            onSelect={(option) => {
-              if (!option) return
-              if (option.value === currentShell()) return
-              serverSync().updateConfig({ shell: option.value })
-            }}
-            variant="secondary"
-            size="small"
-            triggerVariant="settings"
-            triggerStyle={{ "min-width": "180px" }}
-          />
-        </SettingsRow>
+        <Show when={protocol() === "v1"}>
+          <SettingsRow
+            title={language.t("settings.general.row.shell.title")}
+            description={language.t("settings.general.row.shell.description")}
+          >
+            <Select
+              data-action="settings-shell"
+              options={shellOptions()}
+              current={shellOptions().find((o) => o.value === currentShell()) ?? autoOption}
+              value={(o) => o.id}
+              label={(o) => o.label}
+              onSelect={(option) => {
+                if (!option) return
+                if (option.value === currentShell()) return
+                serverSync().updateConfig({ shell: option.value })
+              }}
+              variant="secondary"
+              size="small"
+              triggerVariant="settings"
+              triggerStyle={{ "min-width": "180px" }}
+            />
+          </SettingsRow>
+        </Show>
 
         <SettingsRow
           title={language.t("settings.general.row.reasoningSummaries.title")}
diff --git a/packages/app/src/components/settings-providers.tsx b/packages/app/src/components/settings-providers.tsx
index bcd30edbc7..7a15d82eaf 100644
--- a/packages/app/src/components/settings-providers.tsx
+++ b/packages/app/src/components/settings-providers.tsx
@@ -6,7 +6,7 @@ import { showToast } from "@/utils/toast"
 import { popularProviders, useProviders } from "@/hooks/use-providers"
 import { createMemo, type Component, For, Show } from "solid-js"
 import { useLanguage } from "@/context/language"
-import { useServerSDK } from "@/context/server-sdk"
+import { useServerProtocol, useServerSDK } from "@/context/server-sdk"
 import { useServerSync } from "@/context/server-sync"
 import { DialogConnectProvider, useProviderConnectController } from "./dialog-connect-provider"
 import { DialogCustomProvider } from "./dialog-custom-provider"
@@ -39,6 +39,7 @@ const SettingsProvidersContent: Component<{ onBack?: () => void }> = (props) =>
   const dialog = useDialog()
   const language = useLanguage()
   const serverSDK = useServerSDK()
+  const protocol = useServerProtocol()
   const serverSync = useServerSync()
   const providers = useProviders()
   const providerConnect = useProviderConnectController({ onBack: props.onBack })
@@ -83,7 +84,8 @@ const SettingsProvidersContent: Component<{ onBack?: () => void }> = (props) =>
     return language.t("settings.providers.tag.other")
   }
 
-  const canDisconnect = (item: ProviderItem) => source(item) !== "env"
+  const canDisconnect = (item: ProviderItem) =>
+    source(item) !== "env" && (protocol() === "v1" || !isConfigCustom(item.id))
 
   const note = (id: string) => PROVIDER_NOTES.find((item) => item.match(id))?.key
 
@@ -96,6 +98,7 @@ const SettingsProvidersContent: Component<{ onBack?: () => void }> = (props) =>
   }
 
   const disableProvider = async (providerID: string, name: string) => {
+    if (protocol() !== "v1") return
     const before = serverSync().data.config.disabled_providers ?? []
     const next = before.includes(providerID) ? before : [...before, providerID]
     serverSync().set("config", "disabled_providers", next)
@@ -218,31 +221,33 @@ const SettingsProvidersContent: Component<{ onBack?: () => void }> = (props) =>
               )}
             </For>
 
-            <div
-              class="flex items-center justify-between gap-4 min-h-16 border-b border-border-weak-base last:border-none flex-wrap py-3"
-              data-component="custom-provider-section"
-            >
-              <div class="flex flex-col min-w-0">
-                <div class="flex flex-wrap items-center gap-x-3 gap-y-1">
-                  <ProviderIcon id="synthetic" class="size-5 shrink-0 icon-strong-base" />
-                  <span class="text-14-medium text-text-strong">{language.t("provider.custom.title")}</span>
-                  <Tag>{language.t("settings.providers.tag.custom")}</Tag>
-                </div>
-                <span class="text-12-regular text-text-weak pl-8">
-                  {language.t("settings.providers.custom.description")}
-                </span>
-              </div>
-              <Button
-                size="large"
-                variant="secondary"
-                icon="plus-small"
-                onClick={() => {
-                  dialog.show(() => <DialogCustomProvider onBack={dialog.close} />)
-                }}
+            <Show when={protocol() === "v1"}>
+              <div
+                class="flex items-center justify-between gap-4 min-h-16 border-b border-border-weak-base last:border-none flex-wrap py-3"
+                data-component="custom-provider-section"
               >
-                {language.t("common.connect")}
-              </Button>
-            </div>
+                <div class="flex flex-col min-w-0">
+                  <div class="flex flex-wrap items-center gap-x-3 gap-y-1">
+                    <ProviderIcon id="synthetic" class="size-5 shrink-0 icon-strong-base" />
+                    <span class="text-14-medium text-text-strong">{language.t("provider.custom.title")}</span>
+                    <Tag>{language.t("settings.providers.tag.custom")}</Tag>
+                  </div>
+                  <span class="text-12-regular text-text-weak pl-8">
+                    {language.t("settings.providers.custom.description")}
+                  </span>
+                </div>
+                <Button
+                  size="large"
+                  variant="secondary"
+                  icon="plus-small"
+                  onClick={() => {
+                    dialog.show(() => <DialogCustomProvider onBack={dialog.close} />)
+                  }}
+                >
+                  {language.t("common.connect")}
+                </Button>
+              </div>
+            </Show>
           </SettingsList>
 
           <Button
diff --git a/packages/app/src/components/settings-v2/general.tsx b/packages/app/src/components/settings-v2/general.tsx
index ed2328c89a..03b5fc3ab1 100644
--- a/packages/app/src/components/settings-v2/general.tsx
+++ b/packages/app/src/components/settings-v2/general.tsx
@@ -10,7 +10,7 @@ import { useLanguage } from "@/context/language"
 import { usePermission } from "@/context/permission"
 import { usePlatform } from "@/context/platform"
 import { useServerSync } from "@/context/server-sync"
-import { useServerSDK } from "@/context/server-sdk"
+import { useServerProtocol, useServerSDK } from "@/context/server-sdk"
 import { useUpdaterAction } from "../updater-action"
 import {
   monoDefault,
@@ -92,6 +92,7 @@ export const SettingsGeneralV2: Component<{
   const settings = useSettings()
   const serverSync = useServerSync()
   const serverSdk = useServerSDK()
+  const protocol = useServerProtocol()
   const mobile = createMediaQuery("(max-width: 767px)")
 
   const updater = useUpdaterAction()
@@ -122,8 +123,9 @@ export const SettingsGeneralV2: Component<{
   const themeOptions = createMemo<ThemeOption[]>(() => theme.ids().map((id) => ({ id, name: theme.name(id) })))
 
   const [shells] = createResource(
-    () =>
-      serverSdk()
+    () => (protocol() === "v1" ? serverSdk() : undefined),
+    (sdk) =>
+      sdk
         .client.pty.shells()
         .then((res) => res.data ?? [])
         .catch(() => [] as ShellOption[]),
@@ -281,26 +283,28 @@ export const SettingsGeneralV2: Component<{
           </div>
         </SettingsRowV2>
 
-        <SettingsRowV2
-          title={language.t("settings.general.row.shell.title")}
-          description={language.t("settings.general.row.shell.description")}
-        >
-          <SelectV2
-            appearance="inline"
-            data-action="settings-shell"
-            options={shellOptions()}
-            current={shellOptions().find((o) => o.value === currentShell()) ?? autoOption}
-            placement="bottom-end"
-            gutter={6}
-            value={(o) => o.id}
-            label={(o) => o.label}
-            onSelect={(option) => {
-              if (!option) return
-              if (option.value === currentShell()) return
-              serverSync().updateConfig({ shell: option.value })
-            }}
-          />
-        </SettingsRowV2>
+        <Show when={protocol() === "v1"}>
+          <SettingsRowV2
+            title={language.t("settings.general.row.shell.title")}
+            description={language.t("settings.general.row.shell.description")}
+          >
+            <SelectV2
+              appearance="inline"
+              data-action="settings-shell"
+              options={shellOptions()}
+              current={shellOptions().find((o) => o.value === currentShell()) ?? autoOption}
+              placement="bottom-end"
+              gutter={6}
+              value={(o) => o.id}
+              label={(o) => o.label}
+              onSelect={(option) => {
+                if (!option) return
+                if (option.value === currentShell()) return
+                serverSync().updateConfig({ shell: option.value })
+              }}
+            />
+          </SettingsRowV2>
+        </Show>
 
         <SettingsRowV2
           title={language.t("settings.general.row.reasoningSummaries.title")}
@@ -692,7 +696,9 @@ export const SettingsGeneralV2: Component<{
 
       <div class="settings-v2-tab-body">
         <Show when={settings.general.layoutTransitionAvailable()}>
-          <InterfaceSection />
+          <Show when={!settings.general.newLayoutRequired()}>
+            <InterfaceSection />
+          </Show>
         </Show>
 
         <Show when={settings.general.newInterfaceNoticeVisible()}>
diff --git a/packages/app/src/components/settings-v2/providers.tsx b/packages/app/src/components/settings-v2/providers.tsx
index f945fa33c6..f4309b9b0d 100644
--- a/packages/app/src/components/settings-v2/providers.tsx
+++ b/packages/app/src/components/settings-v2/providers.tsx
@@ -6,7 +6,7 @@ import { showToast } from "@/utils/toast"
 import { popularProviders, useProviders } from "@/hooks/use-providers"
 import { createMemo, type Component, For, Show } from "solid-js"
 import { useLanguage } from "@/context/language"
-import { useServerSDK } from "@/context/server-sdk"
+import { useServerProtocol, useServerSDK } from "@/context/server-sdk"
 import { useServerSync } from "@/context/server-sync"
 import { DialogConnectProvider, useProviderConnectController } from "../dialog-connect-provider"
 import { DialogCustomProvider } from "../dialog-custom-provider"
@@ -33,6 +33,7 @@ export const SettingsProvidersV2: Component<{ onBack?: () => void }> = (props) =
   const dialog = useDialog()
   const language = useLanguage()
   const serverSdk = useServerSDK()
+  const protocol = useServerProtocol()
   const serverSync = useServerSync()
   const providers = useProviders()
   const providerConnect = useProviderConnectController({ onBack: props.onBack })
@@ -77,7 +78,8 @@ export const SettingsProvidersV2: Component<{ onBack?: () => void }> = (props) =
     return language.t("settings.providers.tag.other")
   }
 
-  const canDisconnect = (item: ProviderItem) => source(item) !== "env"
+  const canDisconnect = (item: ProviderItem) =>
+    source(item) !== "env" && (protocol() === "v1" || !isConfigCustom(item.id))
 
   const note = (id: string) => PROVIDER_NOTES.find((item) => item.match(id))?.key
 
@@ -90,6 +92,7 @@ export const SettingsProvidersV2: Component<{ onBack?: () => void }> = (props) =
   }
 
   const disableProvider = async (providerID: string, name: string) => {
+    if (protocol() !== "v1") return
     const before = serverSync().data.config.disabled_providers ?? []
     const next = before.includes(providerID) ? before : [...before, providerID]
     serverSync().set("config", "disabled_providers", next)
@@ -218,33 +221,35 @@ export const SettingsProvidersV2: Component<{ onBack?: () => void }> = (props) =
               )}
             </For>
 
-            <div class="settings-v2-provider-row" data-component="custom-provider-section">
-              <div class="settings-v2-provider-lead">
-                <ProviderIcon
-                  id="synthetic"
-                  width={PROVIDER_ICON_SIZE}
-                  height={PROVIDER_ICON_SIZE}
-                  class="settings-v2-provider-icon shrink-0"
-                />
-                <div class="settings-v2-provider-copy">
-                  <div class="settings-v2-provider-main">
-                    <span class="settings-v2-provider-name">{language.t("provider.custom.title")}</span>
-                    <Tag>{language.t("settings.providers.tag.custom")}</Tag>
+            <Show when={protocol() === "v1"}>
+              <div class="settings-v2-provider-row" data-component="custom-provider-section">
+                <div class="settings-v2-provider-lead">
+                  <ProviderIcon
+                    id="synthetic"
+                    width={PROVIDER_ICON_SIZE}
+                    height={PROVIDER_ICON_SIZE}
+                    class="settings-v2-provider-icon shrink-0"
+                  />
+                  <div class="settings-v2-provider-copy">
+                    <div class="settings-v2-provider-main">
+                      <span class="settings-v2-provider-name">{language.t("provider.custom.title")}</span>
+                      <Tag>{language.t("settings.providers.tag.custom")}</Tag>
+                    </div>
+                    <p class="settings-v2-provider-description">{language.t("settings.providers.custom.description")}</p>
                   </div>
-                  <p class="settings-v2-provider-description">{language.t("settings.providers.custom.description")}</p>
                 </div>
+                <ButtonV2
+                  size="normal"
+                  variant="neutral"
+                  icon="plus"
+                  onClick={() => {
+                    dialog.show(() => <DialogCustomProvider onBack={dialog.close} />)
+                  }}
+                >
+                  {language.t("common.connect")}
+                </ButtonV2>
               </div>
-              <ButtonV2
-                size="normal"
-                variant="neutral"
-                icon="plus"
-                onClick={() => {
-                  dialog.show(() => <DialogCustomProvider onBack={dialog.close} />)
-                }}
-              >
-                {language.t("common.connect")}
-              </ButtonV2>
-            </div>
+            </Show>
           </SettingsListV2>
 
           <button type="button" class="settings-v2-providers-view-all" onClick={() => connect()}>
diff --git a/packages/app/src/components/status-popover-body.tsx b/packages/app/src/components/status-popover-body.tsx
index 68a3f6b226..71f931372d 100644
--- a/packages/app/src/components/status-popover-body.tsx
+++ b/packages/app/src/components/status-popover-body.tsx
@@ -16,6 +16,7 @@ import { type ServerHealth } from "@/utils/server-health"
 import { useGlobal } from "@/context/global"
 import { useSettings } from "@/context/settings"
 import { useMcpToggle } from "@/context/mcp"
+import { useServerProtocol } from "@/context/server-sdk"
 
 const pluginEmptyMessage = (value: string, file: string): JSXElement => {
   const parts = value.split(file)
@@ -257,6 +258,7 @@ export function StatusPopoverBody(props: { shown: Accessor<boolean> }) {
   const language = useLanguage()
   const navigate = useNavigate()
   const settings = useSettings()
+  const protocol = useServerProtocol()
 
   const fail = (err: unknown) => {
     showToast({
@@ -315,10 +317,12 @@ export function StatusPopoverBody(props: { shown: Accessor<boolean> }) {
             {lspCount() > 0 ? `${lspCount()} ` : ""}
             {language.t("status.popover.tab.lsp")}
           </Tabs.Trigger>
-          <Tabs.Trigger value="plugins" data-slot="tab" class="text-12-regular">
-            {pluginCount() > 0 ? `${pluginCount()} ` : ""}
-            {language.t("status.popover.tab.plugins")}
-          </Tabs.Trigger>
+          <Show when={protocol() === "v1"}>
+            <Tabs.Trigger value="plugins" data-slot="tab" class="text-12-regular">
+              {pluginCount() > 0 ? `${pluginCount()} ` : ""}
+              {language.t("status.popover.tab.plugins")}
+            </Tabs.Trigger>
+          </Show>
         </Tabs.List>
 
         {!settings.general.newLayoutDesigns() && (
@@ -478,25 +482,27 @@ export function StatusPopoverBody(props: { shown: Accessor<boolean> }) {
           </div>
         </Tabs.Content>
 
-        <Tabs.Content value="plugins">
-          <div class="flex flex-col px-2 pb-2">
-            <div class="flex flex-col p-3 bg-background-base rounded-sm min-h-14">
-              <Show
-                when={plugins().length > 0}
-                fallback={<div class="text-14-regular text-text-base text-center my-auto">{pluginEmpty()}</div>}
-              >
-                <For each={plugins()}>
-                  {(plugin) => (
-                    <div class="flex items-center gap-2 w-full px-2 py-1">
-                      <div class="size-1.5 rounded-full shrink-0 bg-icon-success-base" />
-                      <span class="text-14-regular text-text-base truncate">{plugin}</span>
-                    </div>
-                  )}
-                </For>
-              </Show>
+        <Show when={protocol() === "v1"}>
+          <Tabs.Content value="plugins">
+            <div class="flex flex-col px-2 pb-2">
+              <div class="flex flex-col p-3 bg-background-base rounded-sm min-h-14">
+                <Show
+                  when={plugins().length > 0}
+                  fallback={<div class="text-14-regular text-text-base text-center my-auto">{pluginEmpty()}</div>}
+                >
+                  <For each={plugins()}>
+                    {(plugin) => (
+                      <div class="flex items-center gap-2 w-full px-2 py-1">
+                        <div class="size-1.5 rounded-full shrink-0 bg-icon-success-base" />
+                        <span class="text-14-regular text-text-base truncate">{plugin}</span>
+                      </div>
+                    )}
+                  </For>
+                </Show>
+              </div>
             </div>
-          </div>
-        </Tabs.Content>
+          </Tabs.Content>
+        </Show>
       </Tabs>
     </div>
   )
diff --git a/packages/app/src/context/layout.tsx b/packages/app/src/context/layout.tsx
index 7ac248dc1d..60c05e402e 100644
--- a/packages/app/src/context/layout.tsx
+++ b/packages/app/src/context/layout.tsx
@@ -126,7 +126,7 @@ const normalizeStoredSessionTabs = (key: string, tabs: SessionTabs) => {
   }
 }
 
-const currentRoute = (pathname: string, search: string): LayoutRoute => {
+export const currentRoute = (pathname: string, search: string): LayoutRoute => {
   const parts = pathname.split("/").filter(Boolean)
   if (parts.length === 0) return { type: "home" }
 
diff --git a/packages/app/src/context/permission.tsx b/packages/app/src/context/permission.tsx
index 496d1ab4a2..4f4a285d3b 100644
--- a/packages/app/src/context/permission.tsx
+++ b/packages/app/src/context/permission.tsx
@@ -211,6 +211,7 @@ function createServerPermissionState(input: { sdk: ServerSDK; sync: ServerSync }
   )
 
   function enableConfiguredDirectory(directory: string) {
+    if (input.sdk.protocolKind() !== "v1") return
     if (meta.disposed || !ready()) return
     const [childStore] = input.sync.child(directory)
     if (childStore.config.permission !== "allow") return
diff --git a/packages/app/src/context/server-sdk.tsx b/packages/app/src/context/server-sdk.tsx
index 62c5857794..4c879603bd 100644
--- a/packages/app/src/context/server-sdk.tsx
+++ b/packages/app/src/context/server-sdk.tsx
@@ -3,7 +3,7 @@ import type { Event } from "@opencode-ai/sdk/v2/client"
 import { createSimpleContext } from "@opencode-ai/ui/context"
 import { createGlobalEmitter } from "@solid-primitives/event-bus"
 import { makeEventListener } from "@solid-primitives/event-listener"
-import { type Accessor, batch, createMemo, onCleanup, onMount } from "solid-js"
+import { type Accessor, batch, createMemo, createResource, onCleanup, onMount } from "solid-js"
 import { createApiForServer, createSdkForServer, type ServerApi } from "@/utils/server"
 import { useLanguage } from "./language"
 import { usePlatform } from "./platform"
@@ -169,6 +169,7 @@ type ServerSDKBase = {
   server: ServerConnection.Any
   scope: ServerScope
   protocol: Promise<ServerProtocol>
+  protocolKind: Accessor<ServerProtocol | undefined>
   url: string
   client: ReturnType<typeof createSdkForServer>
   api: CompatibleApi
@@ -205,6 +206,10 @@ function createServerSdkContextBase(server: ServerConnection.Any, scope: ServerS
     server: server.http,
   })
   const protocol = detectServerProtocol(server.http, platform.fetch ?? globalThis.fetch)
+  const [protocolKind] = createResource(
+    () => protocol,
+    (value) => value,
+  )
   const emitter = createGlobalEmitter<{
     [key: string]: ServerEvent
   }>()
@@ -347,6 +352,7 @@ function createServerSdkContextBase(server: ServerConnection.Any, scope: ServerS
     server,
     scope,
     protocol,
+    protocolKind,
     url: server.http.url,
     client: sdk,
     api,
@@ -394,6 +400,11 @@ export const { use: useServerSDK, provider: ServerSDKProvider } = createSimpleCo
   },
 })
 
+export function useServerProtocol() {
+  const serverSDK = useServerSDK()
+  return createMemo(() => serverSDK().protocolKind())
+}
+
 type SDKEventMap = {
   [key in Event["type"]]: Extract<ServerEvent, { type: key }>
 }
diff --git a/packages/app/src/context/settings.tsx b/packages/app/src/context/settings.tsx
index c2b5680418..9b44273d0f 100644
--- a/packages/app/src/context/settings.tsx
+++ b/packages/app/src/context/settings.tsx
@@ -230,6 +230,7 @@ export const { use: useSettings, provider: SettingsProvider } = createSimpleCont
       migrationApplied: false,
       previous: undefined as string | undefined,
     })
+    const [newLayoutRequired, setNewLayoutRequired] = createSignal(false)
     const showFileTree = withFallback(() => store.general?.showFileTree, defaultSettings.general.showFileTree)
     const showSearch = withFallback(() => store.general?.showSearch, defaultSettings.general.showSearch)
     const showStatus = withFallback(() => store.general?.showStatus, defaultSettings.general.showStatus)
@@ -250,7 +251,7 @@ export const { use: useSettings, provider: SettingsProvider } = createSimpleCont
     const layoutTransition = createMemo(() =>
       layoutTransitionState(!!sunset, layoutTransitionEligible(), oldInterfaceRetired(), newInterfaceNoticeDismissed()),
     )
-    const newLayoutDesigns = createMemo(() => {
+    const preferredNewLayout = createMemo(() => {
       if (layoutUpgrade()) return true
       if (!ready() && !oldInterfaceRetired()) return legacyNewLayoutDesignsDefault
       if (!layoutTransitionClassified()) {
@@ -266,6 +267,7 @@ export const { use: useSettings, provider: SettingsProvider } = createSimpleCont
         layoutTransitionEligible() ? legacyNewLayoutDesignsDefault : newLayoutDesignsDefault,
       )
     })
+    const newLayoutDesigns = createMemo(() => newLayoutRequired() || preferredNewLayout())
     const visible = (preference: () => boolean) => createMemo(() => !newLayoutDesigns() || preference())
 
     if (sunset && !oldInterfaceRetired()) {
@@ -404,9 +406,12 @@ export const { use: useSettings, provider: SettingsProvider } = createSimpleCont
           setStore("general", "mobileTitlebarPosition", value)
         },
         newLayoutDesigns,
+        newLayoutRequired,
+        setNewLayoutRequired,
         setNewLayoutDesigns(value: boolean) {
+          if (newLayoutRequired() && !value) return
           const next = oldInterfaceRetired() ? true : value
-          if (newLayoutDesigns() === next) return
+          if (preferredNewLayout() === next) return
           setStore("general", "newLayoutDesigns", next)
           if (typeof window !== "undefined") setTimeout(() => window.location.reload())
         },
diff --git a/packages/app/src/pages/session/timeline/message-timeline.tsx b/packages/app/src/pages/session/timeline/message-timeline.tsx
index 2959e9f8a9..147ded1954 100644
--- a/packages/app/src/pages/session/timeline/message-timeline.tsx
+++ b/packages/app/src/pages/session/timeline/message-timeline.tsx
@@ -62,7 +62,7 @@ import { SessionContextUsage } from "@/components/session-context-usage"
 import { useDialog } from "@opencode-ai/ui/context/dialog"
 import { useLanguage } from "@/context/language"
 import { useSessionKey } from "@/pages/session/session-layout"
-import { useServerSDK } from "@/context/server-sdk"
+import { useServerProtocol, useServerSDK } from "@/context/server-sdk"
 import { usePlatform } from "@/context/platform"
 import { useSettings } from "@/context/settings"
 import { useTabs } from "@/context/tabs"
@@ -291,7 +291,8 @@ export function MessageTimeline(props: {
   const titleValue = createMemo(() => info()?.title)
   const titleLabel = createMemo(() => sessionTitle(titleValue()))
   const shareUrl = createMemo(() => info()?.share?.url)
-  const shareEnabled = createMemo(() => sync().data.config.share !== "disabled")
+  const protocol = useServerProtocol()
+  const shareEnabled = createMemo(() => protocol() === "v1" && sync().data.config.share !== "disabled")
   const parentID = createMemo(() => info()?.parentID)
   const parent = createMemo(() => {
     const id = parentID()
diff --git a/packages/app/src/pages/session/use-session-commands.tsx b/packages/app/src/pages/session/use-session-commands.tsx
index 275e6ec4bc..e2ac73a95d 100644
--- a/packages/app/src/pages/session/use-session-commands.tsx
+++ b/packages/app/src/pages/session/use-session-commands.tsx
@@ -19,6 +19,7 @@ import { extractPromptFromParts } from "@/utils/prompt"
 import { UserMessage } from "@opencode-ai/sdk/v2"
 import { useSessionLayout } from "@/pages/session/session-layout"
 import { createSessionOwnership } from "./session-ownership"
+import { useServerProtocol } from "@/context/server-sdk"
 
 export type SessionCommandContext = {
   navigateMessageByOffset: (offset: number) => void
@@ -45,6 +46,7 @@ export const useSessionCommands = (actions: SessionCommandContext) => {
   const prompt = usePrompt()
   const sdk = useSDK()
   const settings = useSettings()
+  const protocol = useServerProtocol()
   const sync = useSync()
   const terminal = useTerminal()
   const layout = useLayout()
@@ -184,6 +186,7 @@ export const useSessionCommands = (actions: SessionCommandContext) => {
   }
 
   const share = async () => {
+    if (protocol() !== "v1") return
     const sessionID = params.id
     if (!sessionID) return
 
@@ -210,6 +213,7 @@ export const useSessionCommands = (actions: SessionCommandContext) => {
   }
 
   const unshare = async () => {
+    if (protocol() !== "v1") return
     const sessionID = params.id
     if (!sessionID) return
 
@@ -390,6 +394,7 @@ export const useSessionCommands = (actions: SessionCommandContext) => {
   }
 
   const shareCmds = () => {
+    if (protocol() !== "v1") return []
     if (sync().data.config.share === "disabled") return []
     return [
       sessionCommand({