fix(web): stop spurious page refresh on account menu open; plugin log auto-refresh as switch

Two unrelated frontend fixes:

- LanguageSelector mounts each time the sidebar account dropdown opens and
  unconditionally called i18n.changeLanguage() on mount, emitting a
  languageChanged event even when the language was unchanged. That handed
  every useTranslation() consumer a fresh `t` reference, re-running effects
  keyed on `t` (e.g. the plugins page system-status fetch) and surfacing as
  a page "refresh". Guard the call so it only fires on an actual change.

- Plugin logs auto-refresh control changed from a toggle Button to a
  Switch + Label; the on/off button i18n keys are replaced by a single
  static logsAutoRefresh label across all 8 locales.

web/src/app/home/plugins/components/plugin-installed/plugin-logs/PluginLogs.tsx

@@ -3,6 +3,8 @@ import { httpClient } from '@/app/infra/http/HttpClient';
 import { useTranslation } from 'react-i18next';
 import { PluginLogEntry } from '@/app/infra/entities/plugin';
 import { Button } from '@/components/ui/button';
+import { Switch } from '@/components/ui/switch';
+import { Label } from '@/components/ui/label';
 import {
   Select,
   SelectContent,
@@ -116,17 +118,19 @@ export default function PluginLogs({
           />
           {t('plugins.logsRefresh')}
         </Button>
-        <Button
-          type="button"
-          variant={autoRefresh ? 'default' : 'outline'}
-          size="sm"
-          className="h-8"
-          onClick={() => setAutoRefresh((v) => !v)}
-        >
-          {autoRefresh
-            ? t('plugins.logsAutoRefreshOn')
-            : t('plugins.logsAutoRefreshOff')}
-        </Button>
+        <div className="flex items-center gap-2">
+          <Switch
+            id="plugin-logs-auto-refresh"
+            checked={autoRefresh}
+            onCheckedChange={setAutoRefresh}
+          />
+          <Label
+            htmlFor="plugin-logs-auto-refresh"
+            className="cursor-pointer text-sm font-normal text-muted-foreground"
+          >
+            {t('plugins.logsAutoRefresh')}
+          </Label>
+        </div>
       </div>
 
       <div

web/src/components/ui/language-selector.tsx

@@ -56,7 +56,16 @@ export function LanguageSelector({
 
     const savedLanguage = localStorage.getItem('langbot_language');
     if (savedLanguage) {
-      i18n.changeLanguage(savedLanguage);
+      // Only switch when the active language actually differs. Calling
+      // i18n.changeLanguage() unconditionally on every mount emits a
+      // `languageChanged` event even when nothing changed, which hands every
+      // useTranslation() consumer a fresh `t` reference and re-runs effects
+      // that depend on `t` (e.g. data refetches). Since this selector mounts
+      // each time the account dropdown opens, that surfaced as a spurious
+      // page "refresh". Guard the call to keep mounts side-effect-free.
+      if (i18n.language !== savedLanguage) {
+        i18n.changeLanguage(savedLanguage);
+      }
       setCurrentLanguage(savedLanguage);
     } else {
       const browserLanguage = navigator.language;

web/src/i18n/locales/en-US.ts

@@ -593,8 +593,7 @@ const enUS = {
     tabLogs: 'Logs',
     logsLevelAll: 'All levels',
     logsRefresh: 'Refresh',
-    logsAutoRefreshOn: 'Auto-refresh: On',
-    logsAutoRefreshOff: 'Auto-refresh: Off',
+    logsAutoRefresh: 'Auto-refresh',
     logsEmpty:
       'No logs yet. Logs printed by the plugin via logger will appear here.',
     fileUpload: {

web/src/i18n/locales/es-ES.ts

@@ -605,8 +605,7 @@ const esES = {
     tabLogs: 'Registros',
     logsLevelAll: 'Todos los niveles',
     logsRefresh: 'Actualizar',
-    logsAutoRefreshOn: 'Auto-actualizar: Activado',
-    logsAutoRefreshOff: 'Auto-actualizar: Desactivado',
+    logsAutoRefresh: 'Auto-actualizar',
     logsEmpty:
       'Aún no hay registros. Los registros que el plugin imprima mediante logger aparecerán aquí.',
     fileUpload: {

web/src/i18n/locales/ja-JP.ts

@@ -598,8 +598,7 @@ const jaJP = {
     tabLogs: 'ログ',
     logsLevelAll: 'すべてのレベル',
     logsRefresh: '更新',
-    logsAutoRefreshOn: '自動更新：オン',
-    logsAutoRefreshOff: '自動更新：オフ',
+    logsAutoRefresh: '自動更新',
     logsEmpty:
       'ログはまだありません。プラグインが logger で出力したログがここに表示されます。',
     fileUpload: {

web/src/i18n/locales/ru-RU.ts

@@ -604,8 +604,7 @@ const ruRU = {
     tabLogs: 'Журналы',
     logsLevelAll: 'Все уровни',
     logsRefresh: 'Обновить',
-    logsAutoRefreshOn: 'Автообновление: вкл.',
-    logsAutoRefreshOff: 'Автообновление: выкл.',
+    logsAutoRefresh: 'Автообновление',
     logsEmpty:
       'Журналов пока нет. Здесь появятся логи, выводимые плагином через logger.',
     fileUpload: {

web/src/i18n/locales/th-TH.ts

@@ -585,8 +585,7 @@ const thTH = {
     tabLogs: 'บันทึก',
     logsLevelAll: 'ทุกระดับ',
     logsRefresh: 'รีเฟรช',
-    logsAutoRefreshOn: 'รีเฟรชอัตโนมัติ: เปิด',
-    logsAutoRefreshOff: 'รีเฟรชอัตโนมัติ: ปิด',
+    logsAutoRefresh: 'รีเฟรชอัตโนมัติ',
     logsEmpty: 'ยังไม่มีบันทึก บันทึกที่ปลั๊กอินพิมพ์ผ่าน logger จะแสดงที่นี่',
     fileUpload: {
       tooLarge: 'ขนาดไฟล์เกินขีดจำกัด 10MB',

web/src/i18n/locales/vi-VN.ts

@@ -599,8 +599,7 @@ const viVN = {
     tabLogs: 'Nhật ký',
     logsLevelAll: 'Tất cả cấp độ',
     logsRefresh: 'Làm mới',
-    logsAutoRefreshOn: 'Tự động làm mới: Bật',
-    logsAutoRefreshOff: 'Tự động làm mới: Tắt',
+    logsAutoRefresh: 'Tự động làm mới',
     logsEmpty:
       'Chưa có nhật ký. Nhật ký do plugin in qua logger sẽ hiển thị ở đây.',
     fileUpload: {

web/src/i18n/locales/zh-Hans.ts

@@ -566,8 +566,7 @@ const zhHans = {
     tabLogs: '日志',
     logsLevelAll: '全部级别',
     logsRefresh: '刷新',
-    logsAutoRefreshOn: '自动刷新：开',
-    logsAutoRefreshOff: '自动刷新：关',
+    logsAutoRefresh: '自动刷新',
     logsEmpty: '暂无日志。插件通过 logger 打印的日志会显示在这里。',
     fileUpload: {
       tooLarge: '文件大小超过 10MB 限制',

web/src/i18n/locales/zh-Hant.ts

@@ -566,8 +566,7 @@ const zhHant = {
     tabLogs: '日誌',
     logsLevelAll: '全部級別',
     logsRefresh: '重新整理',
-    logsAutoRefreshOn: '自動重新整理：開',
-    logsAutoRefreshOff: '自動重新整理：關',
+    logsAutoRefresh: '自動重新整理',
     logsEmpty: '暫無日誌。外掛透過 logger 列印的日誌會顯示在這裡。',
     fileUpload: {
       tooLarge: '檔案大小超過 10MB 限制',