diff --git a/src/@layouts/components/VerticalNav.vue b/src/@layouts/components/VerticalNav.vue
index 96ec7877..d27be94c 100644
--- a/src/@layouts/components/VerticalNav.vue
+++ b/src/@layouts/components/VerticalNav.vue
@@ -1,7 +1,9 @@
 <script lang="ts" setup>
 import type { Component } from 'vue'
 import { useDisplay } from 'vuetify'
+import { useI18n } from 'vue-i18n'
 import ThemeLogoMark from '@/components/misc/ThemeLogoMark.vue'
+import { useGlobalSettingsStore } from '@/stores'
 
 interface Props {
   tag?: string | Component
@@ -14,6 +16,17 @@ const props = withDefaults(defineProps<Props>(), {
 })
 
 const { mdAndDown } = useDisplay()
+const { t } = useI18n()
+const globalSettingsStore = useGlobalSettingsStore()
+const pythonFreeThreaded = computed(() => globalSettingsStore.get('PYTHON_FREE_THREADED') === true)
+const runtimeVersion = computed(() => (pythonFreeThreaded.value ? 'v3t' : 'v3'))
+const runtimeGilFallback = computed(
+  () => pythonFreeThreaded.value && globalSettingsStore.get('PYTHON_GIL_ENABLED') === true,
+)
+const runtimeStatusIcon = computed(() => (runtimeGilFallback.value ? 'mdi-alert-circle-outline' : 'mdi-flask-outline'))
+const runtimeStatusHint = computed(() =>
+  t(runtimeGilFallback.value ? 'app.freeThreadedGilFallbackWarning' : 'app.freeThreadedExperimentalHint'),
+)
 const refNav = ref()
 const route = useRoute()
 
@@ -54,7 +67,20 @@ function handleNavScroll(evt: Event) {
           <ThemeLogoMark />
 
           <h1 class="leading-normal text-xl">
-            <span class="moviepilot-wordmark">MOVIEPILOT</span> <span class="text-sm text-gray-500">v3</span>
+            <span class="moviepilot-wordmark">MOVIEPILOT</span>
+            <span
+              class="runtime-version text-sm text-gray-500 d-inline-flex align-center"
+              :class="{
+                'runtime-version--free-threaded': pythonFreeThreaded,
+                'runtime-version--degraded': runtimeGilFallback,
+              }"
+            >
+              {{ runtimeVersion }}
+              <VIcon v-if="pythonFreeThreaded" :icon="runtimeStatusIcon" size="13" :aria-label="runtimeStatusHint" />
+              <VTooltip v-if="pythonFreeThreaded" activator="parent" location="bottom">
+                {{ runtimeStatusHint }}
+              </VTooltip>
+            </span>
           </h1>
         </RouterLink>
       </slot>
@@ -92,7 +118,10 @@ function handleNavScroll(evt: Event) {
   inline-size: variables.$layout-vertical-nav-width;
   inset-block-start: 0;
   inset-inline-start: 0;
-  transition: transform 0.25s ease-in-out, inline-size 0.25s ease-in-out, box-shadow 0.25s ease-in-out;
+  transition:
+    transform 0.25s ease-in-out,
+    inline-size 0.25s ease-in-out,
+    box-shadow 0.25s ease-in-out;
   visibility: hidden;
   will-change: transform, inline-size;
 
@@ -113,6 +142,20 @@ function handleNavScroll(evt: Event) {
     margin-inline-end: auto;
   }
 
+  .runtime-version {
+    margin-inline-start: 0.25rem;
+    font-weight: 600;
+    line-height: 1;
+  }
+
+  .runtime-version--free-threaded {
+    gap: 0.2rem;
+  }
+
+  .runtime-version--degraded {
+    color: rgb(var(--v-theme-warning)) !important;
+  }
+
   .nav-items {
     block-size: 100%;
 
diff --git a/src/@layouts/components/__tests__/VerticalNav.spec.ts b/src/@layouts/components/__tests__/VerticalNav.spec.ts
new file mode 100644
index 00000000..79b0ea44
--- /dev/null
+++ b/src/@layouts/components/__tests__/VerticalNav.spec.ts
@@ -0,0 +1,85 @@
+import VerticalNav from '@/@layouts/components/VerticalNav.vue'
+import { shallowMount } from '@vue/test-utils'
+import { beforeEach, describe, expect, it, vi } from 'vitest'
+
+const mocks = vi.hoisted(() => ({
+  freeThreaded: false,
+  gilEnabled: true,
+}))
+
+vi.mock('@/stores', () => ({
+  useGlobalSettingsStore: () => ({
+    get: (key: string) => {
+      if (key === 'PYTHON_FREE_THREADED') return mocks.freeThreaded
+      if (key === 'PYTHON_GIL_ENABLED') return mocks.gilEnabled
+      return undefined
+    },
+  }),
+}))
+
+vi.mock('vue-i18n', async importOriginal => ({
+  ...(await importOriginal<typeof import('vue-i18n')>()),
+  useI18n: () => ({ t: (key: string) => key }),
+}))
+
+vi.mock('vue-router', async importOriginal => ({
+  ...(await importOriginal<typeof import('vue-router')>()),
+  useRoute: () => ({ path: '/' }),
+}))
+
+vi.mock('vuetify', async importOriginal => ({
+  ...(await importOriginal<typeof import('vuetify')>()),
+  useDisplay: () => ({ mdAndDown: { value: false } }),
+}))
+
+function renderNavigation() {
+  return shallowMount(VerticalNav, {
+    props: {
+      isOverlayNavActive: false,
+      toggleIsOverlayNavActive: vi.fn(),
+    },
+    global: {
+      stubs: {
+        PerfectScrollbar: { template: '<ul><slot /></ul>' },
+        RouterLink: { template: '<a><slot /></a>' },
+        ThemeLogoMark: true,
+        VIcon: { props: ['ariaLabel'], template: '<span>{{ ariaLabel }}</span>' },
+        VTooltip: { template: '<span><slot /></span>' },
+      },
+    },
+  })
+}
+
+describe('VerticalNav runtime version', () => {
+  beforeEach(() => {
+    mocks.freeThreaded = false
+    mocks.gilEnabled = true
+  })
+
+  it('shows v3 for the standard runtime', () => {
+    const navigation = renderNavigation()
+
+    expect(navigation.text()).toContain('MOVIEPILOT')
+    expect(navigation.get('.runtime-version').text()).toBe('v3')
+  })
+
+  it('shows v3t for the free-threaded runtime', () => {
+    mocks.freeThreaded = true
+    mocks.gilEnabled = false
+
+    const navigation = renderNavigation()
+
+    expect(navigation.get('.runtime-version--free-threaded').text()).toContain('v3t')
+    expect(navigation.get('.runtime-version--free-threaded').classes()).not.toContain('runtime-version--degraded')
+    expect(navigation.text()).toContain('app.freeThreadedExperimentalHint')
+  })
+
+  it('marks v3t when the runtime has enabled the GIL', () => {
+    mocks.freeThreaded = true
+
+    const navigation = renderNavigation()
+
+    expect(navigation.get('.runtime-version--degraded').text()).toContain('v3t')
+    expect(navigation.text()).toContain('app.freeThreadedGilFallbackWarning')
+  })
+})
diff --git a/src/layouts/default/components/DefaultLayout.vue b/src/layouts/default/components/DefaultLayout.vue
index e5016838..4c22d0ef 100644
--- a/src/layouts/default/components/DefaultLayout.vue
+++ b/src/layouts/default/components/DefaultLayout.vue
@@ -484,7 +484,10 @@ watch([() => pluginSidebarNavStore.items, userPermissions], () => {
 watch(
   () => pluginRuntimeStore.reconciliation,
   reconciliation => {
-    if (reconciliation > 0) void pluginSidebarNavStore.ensureSidebarNav(true)
+    if (reconciliation <= 0) return
+
+    void pluginSidebarNavStore.ensureSidebarNav(true)
+    void globalSettingsStore.loadUserSettings()
   },
 )
 
diff --git a/src/layouts/default/components/__tests__/DefaultLayout.spec.ts b/src/layouts/default/components/__tests__/DefaultLayout.spec.ts
index 9c287903..48a97618 100644
--- a/src/layouts/default/components/__tests__/DefaultLayout.spec.ts
+++ b/src/layouts/default/components/__tests__/DefaultLayout.spec.ts
@@ -24,6 +24,7 @@ interface UserStoreMock {
 const mocks = vi.hoisted(() => ({
   emptyComponent: { template: '<div><slot /></div>' },
   ensureSidebarNav: vi.fn(),
+  loadUserSettings: vi.fn(),
   navLink: {
     name: 'VerticalNavLink',
     props: ['item'],
@@ -76,7 +77,10 @@ vi.mock('@/stores', async () => {
   })
 
   return {
-    useGlobalSettingsStore: () => ({ get: vi.fn(() => false) }),
+    useGlobalSettingsStore: () => ({
+      get: vi.fn(() => false),
+      loadUserSettings: mocks.loadUserSettings,
+    }),
     usePluginRuntimeStore: () => mocks.runtimeStore,
     usePluginSidebarNavStore: () => mocks.sidebarStore,
     useUserStore: () => mocks.userStore,
@@ -125,6 +129,8 @@ describe('DefaultLayout', () => {
   beforeEach(() => {
     mocks.ensureSidebarNav.mockReset()
     mocks.ensureSidebarNav.mockResolvedValue(undefined)
+    mocks.loadUserSettings.mockReset()
+    mocks.loadUserSettings.mockResolvedValue(undefined)
     mocks.startPluginRuntime.mockReset()
     mocks.stopPluginRuntime.mockReset()
     mocks.runtimeStore!.reconciliation = 0
@@ -264,11 +270,14 @@ describe('DefaultLayout', () => {
     mocks.runtimeStore!.reconciliation = 1
     await nextTick()
     expect(mocks.ensureSidebarNav).toHaveBeenCalledWith(true)
+    expect(mocks.loadUserSettings).toHaveBeenCalled()
     mocks.ensureSidebarNav.mockClear()
+    mocks.loadUserSettings.mockClear()
 
     mocks.runtimeStore!.reconciliation = 2
     await nextTick()
     expect(mocks.ensureSidebarNav).toHaveBeenCalledWith(true)
+    expect(mocks.loadUserSettings).toHaveBeenCalled()
 
     wrapper.unmount()
     expect(mocks.stopPluginRuntime).toHaveBeenCalledTimes(1)
diff --git a/src/locales/en-US.ts b/src/locales/en-US.ts
index 7946692d..a7746920 100644
--- a/src/locales/en-US.ts
+++ b/src/locales/en-US.ts
@@ -277,6 +277,9 @@ export default {
     continueBrowsing: 'Continue browsing',
     online: 'Application Online',
     onlineMessage: 'Network connection restored',
+    freeThreadedExperimentalHint: 'Experimental free-threaded runtime',
+    freeThreadedGilFallbackWarning:
+      'The free-threaded runtime has fallen back to GIL mode. Check backend logs for native extension compatibility warnings.',
   },
   pwa: {
     installApp: 'Install MoviePilot App',
diff --git a/src/locales/zh-CN.ts b/src/locales/zh-CN.ts
index 1c67bce4..253930a6 100644
--- a/src/locales/zh-CN.ts
+++ b/src/locales/zh-CN.ts
@@ -270,6 +270,8 @@ export default {
     continueBrowsing: '继续浏览',
     online: '应用在线',
     onlineMessage: '网络连接已恢复',
+    freeThreadedExperimentalHint: '实验性 free-threaded 运行时',
+    freeThreadedGilFallbackWarning: 'free-threaded 运行时已退化为 GIL 模式，请检查后端日志中的原生扩展兼容告警',
   },
   pwa: {
     installApp: '安装 MoviePilot 应用',
diff --git a/src/locales/zh-TW.ts b/src/locales/zh-TW.ts
index 340e6e92..23235bcd 100644
--- a/src/locales/zh-TW.ts
+++ b/src/locales/zh-TW.ts
@@ -270,6 +270,8 @@ export default {
     continueBrowsing: '繼續瀏覽',
     online: '應用在線',
     onlineMessage: '網絡連接已恢復',
+    freeThreadedExperimentalHint: '實驗性 free-threaded 運行環境',
+    freeThreadedGilFallbackWarning: 'free-threaded 運行環境已退化為 GIL 模式，請檢查後端日誌中的原生擴展兼容警告',
   },
   pwa: {
     installApp: '安裝 MoviePilot 應用',
diff --git a/src/views/setting/AccountSettingSystem.vue b/src/views/setting/AccountSettingSystem.vue
index ce689df4..a032854b 100644
--- a/src/views/setting/AccountSettingSystem.vue
+++ b/src/views/setting/AccountSettingSystem.vue
@@ -551,7 +551,6 @@ const rustAccelHint = computed(() =>
       ? t('setting.system.rustAccelHint')
       : t('setting.system.rustAccelUnavailableHint'),
 )
-
 const thinkingLevelItems = computed(() => [
   { title: t('setting.system.llmThinkingLevelOff'), value: 'off' },
   { title: t('setting.system.llmThinkingLevelAuto'), value: 'auto' },
@@ -2782,7 +2781,8 @@ watch(currentLlmSnapshotKey, (snapshotKey, previousSnapshotKey) => {
                     v-model="SystemSettings.Advanced.RUST_ACCEL"
                     :label="t('setting.system.rustAccel')"
                     :hint="rustAccelHint"
-                    :disabled="!rustAccelAvailable || rustAccelRequired"
+                    :disabled="!rustAccelAvailable"
+                    :readonly="rustAccelRequired"
                     persistent-hint
                   />
                 </VCol>
diff --git a/src/views/setting/__tests__/AccountSettingSystem.spec.ts b/src/views/setting/__tests__/AccountSettingSystem.spec.ts
index 5fd13e5c..d08f6ac3 100644
--- a/src/views/setting/__tests__/AccountSettingSystem.spec.ts
+++ b/src/views/setting/__tests__/AccountSettingSystem.spec.ts
@@ -1342,7 +1342,9 @@ describe('AccountSettingSystem', () => {
 
     const dialog = await openAdvancedTab('实验室')
     const rust = dialog.getByLabelText('Rust 加速')
-    expect(rust).toBeDisabled()
+    expect(rust).toHaveAttribute('aria-disabled', 'false')
+    expect(rust).toBeChecked()
+    await fireEvent.click(rust)
     expect(rust).toBeChecked()
     await fireEvent.click(dialog.getByRole('button', { name: '保存' }))