chore: release v1.1.5

fix(subscription): improve cover image selection (#73 )
* fix(subscriptions): improve rss cover fallback * fix(subscriptions): match img src first
2026-01-10 19:18:55 +08:00 · 2026-01-10 19:18:03 +08:00 · 2026-01-10 18:39:00 +08:00 · 2026-01-10 18:30:18 +08:00 · 2026-01-09 21:39:01 +08:00 · 2026-01-09 21:03:25 +08:00
37 changed files with 1523 additions and 450 deletions
--- a/conductor.json
+++ b/conductor.json
@@ -1,6 +1,6 @@
 {
  "scripts": {
-    "setup": "cp -r $CONDUCTOR_ROOT_PATH/resources resources/ && pnpm install",
+    "setup": "rm -rf resources && cp -r $CONDUCTOR_ROOT_PATH/resources resources && pnpm install",
    "run": "pnpm run dev"
  }
 }
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
  "name": "vidbee",
-  "version": "1.1.2",
+  "version": "1.1.5",
  "description": "A modern Electron application for downloading videos and audios",
  "main": "./out/main/index.js",
  "author": "VidBee",
@@ -33,6 +33,7 @@
    "@radix-ui/react-dropdown-menu": "^2.1.16",
    "@radix-ui/react-hover-card": "^1.1.15",
    "@radix-ui/react-label": "^2.1.7",
+    "@radix-ui/react-popover": "^1.1.15",
    "@radix-ui/react-progress": "^1.1.7",
    "@radix-ui/react-scroll-area": "^1.2.10",
    "@radix-ui/react-select": "^2.2.6",
@@ -47,6 +48,7 @@
    "better-sqlite3": "^12.4.1",
    "class-variance-authority": "^0.7.1",
    "clsx": "^2.1.1",
+    "cmdk": "^1.1.1",
    "dayjs": "^1.11.18",
    "drizzle-orm": "^0.44.7",
    "electron-ipc-decorator": "^0.2.0",
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -38,6 +38,9 @@ importers:
      '@radix-ui/react-label':
        specifier: ^2.1.7
        version: 2.1.7(@types/react-dom@19.2.2(@types/react@19.2.2))(@types/react@19.2.2)(react-dom@19.2.0(react@19.2.0))(react@19.2.0)
+      '@radix-ui/react-popover':
+        specifier: ^1.1.15
+        version: 1.1.15(@types/react-dom@19.2.2(@types/react@19.2.2))(@types/react@19.2.2)(react-dom@19.2.0(react@19.2.0))(react@19.2.0)
      '@radix-ui/react-progress':
        specifier: ^1.1.7
        version: 1.1.7(@types/react-dom@19.2.2(@types/react@19.2.2))(@types/react@19.2.2)(react-dom@19.2.0(react@19.2.0))(react@19.2.0)
@@ -80,6 +83,9 @@ importers:
      clsx:
        specifier: ^2.1.1
        version: 2.1.1
+      cmdk:
+        specifier: ^1.1.1
+        version: 1.1.1(@types/react-dom@19.2.2(@types/react@19.2.2))(@types/react@19.2.2)(react-dom@19.2.0(react@19.2.0))(react@19.2.0)
      dayjs:
        specifier: ^1.11.18
        version: 1.11.18
@@ -999,6 +1005,19 @@ packages:
      '@types/react-dom':
        optional: true

+  '@radix-ui/react-popover@1.1.15':
+    resolution: {integrity: sha512-kr0X2+6Yy/vJzLYJUPCZEc8SfQcf+1COFoAqauJm74umQhta9M7lNJHP7QQS3vkvcGLQUbWpMzwrXYwrYztHKA==}
+    peerDependencies:
+      '@types/react': '*'
+      '@types/react-dom': '*'
+      react: ^16.8 || ^17.0 || ^18.0 || ^19.0 || ^19.0.0-rc
+      react-dom: ^16.8 || ^17.0 || ^18.0 || ^19.0 || ^19.0.0-rc
+    peerDependenciesMeta:
+      '@types/react':
+        optional: true
+      '@types/react-dom':
+        optional: true
+
  '@radix-ui/react-popper@1.2.8':
    resolution: {integrity: sha512-0NJQ4LFFUuWkE7Oxf0htBKS6zLkkjBH+hM1uk7Ng705ReR8m/uelduy1DBo0PyBXPKVnBA6YBlU94MBGXrSBCw==}
    peerDependencies:
@@ -1896,6 +1915,12 @@ packages:
    resolution: {integrity: sha512-eYm0QWBtUrBWZWG0d386OGAw16Z995PiOVo2B7bjWSbHedGl5e0ZWaq65kOGgUSNesEIDkB9ISbTg/JK9dhCZA==}
    engines: {node: '>=6'}

+  cmdk@1.1.1:
+    resolution: {integrity: sha512-Vsv7kFaXm+ptHDMZ7izaRsP70GgrW9NBNGswt9OZaVBLlE0SNpDq8eu/VGXyF9r7M0azK3Wy7OlYXsuyYLFzHg==}
+    peerDependencies:
+      react: ^18 || ^19 || ^19.0.0-rc
+      react-dom: ^18 || ^19 || ^19.0.0-rc
+
  color-convert@2.0.1:
    resolution: {integrity: sha512-RRECPsj7iu/xb5oKYcsFHSppFNnsj/52OVTRKb4zP5onXwVF3zVmmToNcOfGC+CRDpfK/U584fMg38ZHCaElKQ==}
    engines: {node: '>=7.0.0'}
@@ -4481,6 +4506,29 @@ snapshots:
      '@types/react': 19.2.2
      '@types/react-dom': 19.2.2(@types/react@19.2.2)

+  '@radix-ui/react-popover@1.1.15(@types/react-dom@19.2.2(@types/react@19.2.2))(@types/react@19.2.2)(react-dom@19.2.0(react@19.2.0))(react@19.2.0)':
+    dependencies:
+      '@radix-ui/primitive': 1.1.3
+      '@radix-ui/react-compose-refs': 1.1.2(@types/react@19.2.2)(react@19.2.0)
+      '@radix-ui/react-context': 1.1.2(@types/react@19.2.2)(react@19.2.0)
+      '@radix-ui/react-dismissable-layer': 1.1.11(@types/react-dom@19.2.2(@types/react@19.2.2))(@types/react@19.2.2)(react-dom@19.2.0(react@19.2.0))(react@19.2.0)
+      '@radix-ui/react-focus-guards': 1.1.3(@types/react@19.2.2)(react@19.2.0)
+      '@radix-ui/react-focus-scope': 1.1.7(@types/react-dom@19.2.2(@types/react@19.2.2))(@types/react@19.2.2)(react-dom@19.2.0(react@19.2.0))(react@19.2.0)
+      '@radix-ui/react-id': 1.1.1(@types/react@19.2.2)(react@19.2.0)
+      '@radix-ui/react-popper': 1.2.8(@types/react-dom@19.2.2(@types/react@19.2.2))(@types/react@19.2.2)(react-dom@19.2.0(react@19.2.0))(react@19.2.0)
+      '@radix-ui/react-portal': 1.1.9(@types/react-dom@19.2.2(@types/react@19.2.2))(@types/react@19.2.2)(react-dom@19.2.0(react@19.2.0))(react@19.2.0)
+      '@radix-ui/react-presence': 1.1.5(@types/react-dom@19.2.2(@types/react@19.2.2))(@types/react@19.2.2)(react-dom@19.2.0(react@19.2.0))(react@19.2.0)
+      '@radix-ui/react-primitive': 2.1.3(@types/react-dom@19.2.2(@types/react@19.2.2))(@types/react@19.2.2)(react-dom@19.2.0(react@19.2.0))(react@19.2.0)
+      '@radix-ui/react-slot': 1.2.3(@types/react@19.2.2)(react@19.2.0)
+      '@radix-ui/react-use-controllable-state': 1.2.2(@types/react@19.2.2)(react@19.2.0)
+      aria-hidden: 1.2.6
+      react: 19.2.0
+      react-dom: 19.2.0(react@19.2.0)
+      react-remove-scroll: 2.7.1(@types/react@19.2.2)(react@19.2.0)
+    optionalDependencies:
+      '@types/react': 19.2.2
+      '@types/react-dom': 19.2.2(@types/react@19.2.2)
+
  '@radix-ui/react-popper@1.2.8(@types/react-dom@19.2.2(@types/react@19.2.2))(@types/react@19.2.2)(react-dom@19.2.0(react@19.2.0))(react@19.2.0)':
    dependencies:
      '@floating-ui/react-dom': 2.1.6(react-dom@19.2.0(react@19.2.0))(react@19.2.0)
@@ -5429,6 +5477,18 @@ snapshots:

  clsx@2.1.1: {}

+  cmdk@1.1.1(@types/react-dom@19.2.2(@types/react@19.2.2))(@types/react@19.2.2)(react-dom@19.2.0(react@19.2.0))(react@19.2.0):
+    dependencies:
+      '@radix-ui/react-compose-refs': 1.1.2(@types/react@19.2.2)(react@19.2.0)
+      '@radix-ui/react-dialog': 1.1.15(@types/react-dom@19.2.2(@types/react@19.2.2))(@types/react@19.2.2)(react-dom@19.2.0(react@19.2.0))(react@19.2.0)
+      '@radix-ui/react-id': 1.1.1(@types/react@19.2.2)(react@19.2.0)
+      '@radix-ui/react-primitive': 2.1.3(@types/react-dom@19.2.2(@types/react@19.2.2))(@types/react@19.2.2)(react-dom@19.2.0(react@19.2.0))(react@19.2.0)
+      react: 19.2.0
+      react-dom: 19.2.0(react@19.2.0)
+    transitivePeerDependencies:
+      - '@types/react'
+      - '@types/react-dom'
+
  color-convert@2.0.1:
    dependencies:
      color-name: 1.1.4
--- a/scripts/setup-dev-binaries.js
+++ b/scripts/setup-dev-binaries.js
@@ -104,40 +104,80 @@ function ensureDir(dir) {
  }
 }

+function safeUnlink(filePath) {
+  if (fs.existsSync(filePath)) {
+    fs.unlinkSync(filePath)
+  }
+}
+
+function getDownloadHeaders(url) {
+  const headers = {
+    'User-Agent': 'vidbee-setup',
+    Accept: '*/*'
+  }
+  if (GITHUB_TOKEN && /github\.com|githubusercontent\.com/.test(url)) {
+    headers.Authorization = `Bearer ${GITHUB_TOKEN}`
+  }
+  return headers
+}
+
 function downloadFile(url, dest) {
  return new Promise((resolve, reject) => {
    const protocol = url.startsWith('https') ? https : http
    const file = fs.createWriteStream(dest)

-    protocol
-      .get(url, (response) => {
-        if (response.statusCode === 302 || response.statusCode === 301) {
-          // Handle redirect
-          file.close()
-          fs.unlinkSync(dest)
-          return downloadFile(response.headers.location, dest).then(resolve).catch(reject)
-        }
-
-        if (response.statusCode !== 200) {
-          file.close()
-          fs.unlinkSync(dest)
-          return reject(new Error(`Failed to download: ${response.statusCode}`))
-        }
-
-        response.pipe(file)
-        file.on('finish', () => {
-          file.close()
-          resolve()
-        })
-      })
-      .on('error', (err) => {
+    const request = protocol.get(url, { headers: getDownloadHeaders(url) }, (response) => {
+      if (response.statusCode === 302 || response.statusCode === 301) {
+        // Handle redirect
        file.close()
-        fs.unlinkSync(dest)
-        reject(err)
+        safeUnlink(dest)
+        return downloadFile(response.headers.location, dest).then(resolve).catch(reject)
+      }
+
+      if (response.statusCode !== 200) {
+        file.close()
+        safeUnlink(dest)
+        return reject(new Error(`Failed to download: ${response.statusCode}`))
+      }
+
+      response.pipe(file)
+      file.on('finish', () => {
+        file.close()
+        resolve()
      })
+    })
+
+    request.setTimeout(30000, () => {
+      request.destroy(new Error('Download timeout'))
+    })
+
+    request.on('error', (err) => {
+      file.close()
+      safeUnlink(dest)
+      reject(err)
+    })
  })
 }

+async function downloadFileWithRetry(url, dest, retries = 3, delayMs = 2000) {
+  let lastError
+  for (let attempt = 1; attempt <= retries; attempt += 1) {
+    try {
+      await downloadFile(url, dest)
+      return
+    } catch (error) {
+      lastError = error
+      safeUnlink(dest)
+      if (attempt < retries) {
+        const backoff = delayMs * attempt
+        log(`Download failed (attempt ${attempt}/${retries}): ${error.message}`, 'warn')
+        await new Promise((resolve) => setTimeout(resolve, backoff))
+      }
+    }
+  }
+  throw lastError
+}
+
 function fetchJson(url) {
  return new Promise((resolve, reject) => {
    const protocol = url.startsWith('https') ? https : http
@@ -299,7 +339,7 @@ async function downloadYtDlp(config) {
  const tempPath = path.join(RESOURCES_DIR, `.${asset}.tmp`)

  try {
-    await downloadFile(url, tempPath)
+    await downloadFileWithRetry(url, tempPath)
    fs.renameSync(tempPath, outputPath)
    setExecutable(outputPath)
    log(`Downloaded ${output} successfully`, 'success')
@@ -342,7 +382,7 @@ async function downloadFfmpegWindows(config) {
  }

  try {
-    await downloadFile(downloadUrl, tempZip)
+    await downloadFileWithRetry(downloadUrl, tempZip)
    log('Extracting ffmpeg...', 'info')
    extractZip(tempZip, extractDir)

@@ -397,7 +437,7 @@ async function downloadFfmpegMac(config) {
  }

  try {
-    await downloadFile(downloadUrl, tempZip)
+    await downloadFileWithRetry(downloadUrl, tempZip)
    log('Extracting ffmpeg...', 'info')
    extractZip(tempZip, extractDir)

@@ -451,7 +491,7 @@ async function downloadFfmpegLinux(config) {
  }

  try {
-    await downloadFile(downloadUrl, tempTar)
+    await downloadFileWithRetry(downloadUrl, tempTar)
    log('Extracting ffmpeg...', 'info')
    extractTarXz(tempTar, extractDir)

@@ -498,7 +538,7 @@ async function downloadDenoRuntime() {
  const downloadUrl = `${DENO_BASE_URL}/${assetName}`

  try {
-    await downloadFile(downloadUrl, tempZip)
+    await downloadFileWithRetry(downloadUrl, tempZip)
    log('Extracting Deno runtime...', 'info')
    extractZip(tempZip, extractDir)

--- a/src/main/download-engine/args-builder.ts
+++ b/src/main/download-engine/args-builder.ts
@@ -34,8 +34,8 @@ export const resolveVideoFormatSelector = (options: DownloadOptions): string =>
      return 'bestvideo+none'
    }
    if (!audioFormat || audioFormat === 'best') {
-      // Use bestvideo+bestaudio to ensure video and audio are merged into a single file
-      return 'bestvideo+bestaudio'
+      // Prefer merged formats, but allow single-file "best" for sites without separate streams.
+      return 'bestvideo+bestaudio/best'
    }
    return `bestvideo+${audioFormat}`
  }
--- a/src/main/index.ts
+++ b/src/main/index.ts
@@ -2,7 +2,14 @@ import { existsSync } from 'node:fs'
 import { isAbsolute, join, relative, resolve } from 'node:path'
 import { electronApp, optimizer } from '@electron-toolkit/utils'
 import { APP_PROTOCOL, APP_PROTOCOL_SCHEME } from '@shared/constants'
-import { app, BrowserWindow, type BrowserWindowConstructorOptions, protocol, shell } from 'electron'
+import {
+  app,
+  BrowserWindow,
+  type BrowserWindowConstructorOptions,
+  ipcMain,
+  protocol,
+  shell
+} from 'electron'
 import log from 'electron-log/main'
 import { autoUpdater } from 'electron-updater'
 import appIcon from '../../build/icon.png?asset'
@@ -129,6 +136,7 @@ subscriptionManager.on('subscriptions:updated', (subscriptions) => {
 export function createWindow(): void {
  const isMac = process.platform === 'darwin'
  const isWindows = process.platform === 'win32'
+  const shouldStartHidden = isWindows && app.getLoginItemSettings().wasOpenedAtLogin

  const windowOptions: BrowserWindowConstructorOptions = {
    width: 1200,
@@ -168,6 +176,9 @@ export function createWindow(): void {
  })

  mainWindow.on('ready-to-show', () => {
+    if (shouldStartHidden) {
+      return
+    }
    mainWindow?.show()
  })

@@ -190,10 +201,48 @@ export function createWindow(): void {
    flushPendingDeepLinks()
  })

+  // Setup error handling for renderer process
+  setupRendererErrorHandling()
+
  // Setup download engine event forwarding to renderer
  setupDownloadEvents()
 }

+function setupRendererErrorHandling(): void {
+  if (!mainWindow) return
+
+  // Handle uncaught exceptions in renderer process
+  mainWindow.webContents.on('unresponsive', () => {
+    log.error('Renderer process became unresponsive')
+  })
+
+  mainWindow.webContents.on('responsive', () => {
+    log.info('Renderer process became responsive again')
+  })
+
+  // Listen for renderer errors via IPC
+  ipcMain.on('error:renderer', (_event, errorData) => {
+    log.error('Renderer error received:', errorData)
+
+    // Log detailed error information
+    if (errorData.error) {
+      log.error('Error name:', errorData.error.name)
+      log.error('Error message:', errorData.error.message)
+      if (errorData.error.stack) {
+        log.error('Error stack:', errorData.error.stack)
+      }
+    }
+
+    if (errorData.errorInfo?.componentStack) {
+      log.error('Component stack:', errorData.errorInfo.componentStack)
+    }
+
+    if (errorData.context) {
+      log.error('Error context:', errorData.context)
+    }
+  })
+}
+
 function setupDownloadEvents(): void {
  downloadEngine.on('download-started', (id: string) => {
    mainWindow?.webContents.send('download:started', id)
@@ -379,6 +428,17 @@ app.whenReady().then(async () => {
  // and ignore CommandOrControl + R in production.
  app.on('browser-window-created', (_, window) => {
    optimizer.watchWindowShortcuts(window)
+
+    // Enable F12 to toggle DevTools in both development and production
+    window.webContents.on('before-input-event', (_, input) => {
+      if (input.key === 'F12') {
+        if (window.webContents.isDevToolsOpened()) {
+          window.webContents.closeDevTools()
+        } else {
+          window.webContents.openDevTools()
+        }
+      }
+    })
  })

  // IPC services are automatically registered by electron-ipc-decorator when imported
--- a/src/main/ipc/services/settings-service.ts
+++ b/src/main/ipc/services/settings-service.ts
@@ -1,6 +1,5 @@
 import { type IpcContext, IpcMethod, IpcService } from 'electron-ipc-decorator'
 import type { AppSettings } from '../../../shared/types'
-import { subscriptionScheduler } from '../../lib/subscription-scheduler'
 import { settingsManager } from '../../settings'
 import { updateTrayMenu } from '../../tray'
 import { applyAutoLaunchSetting } from '../../utils/auto-launch'
@@ -29,10 +28,6 @@ class SettingsService extends IpcService {
    if (key === 'launchAtLogin') {
      applyAutoLaunchSetting(value as AppSettings['launchAtLogin'])
    }
-
-    if (key === 'subscriptionCheckIntervalHours') {
-      subscriptionScheduler.refreshInterval()
-    }
  }

  @IpcMethod()
@@ -55,10 +50,6 @@ class SettingsService extends IpcService {
    if (typeof settings.launchAtLogin === 'boolean') {
      applyAutoLaunchSetting(settings.launchAtLogin)
    }
-
-    if (settings.subscriptionCheckIntervalHours !== undefined) {
-      subscriptionScheduler.refreshInterval()
-    }
  }

  @IpcMethod()
@@ -66,7 +57,6 @@ class SettingsService extends IpcService {
    settingsManager.reset()
    applyDockVisibility(settingsManager.get('hideDockIcon'))
    applyAutoLaunchSetting(settingsManager.get('launchAtLogin'))
-    subscriptionScheduler.refreshInterval()
  }
 }

--- a/src/main/lib/download-engine.ts
+++ b/src/main/lib/download-engine.ts
@@ -36,6 +36,19 @@ interface DownloadProcess {
  process: YTDlpEventEmitter
 }

+const formatYtDlpCommand = (args: string[]): string => {
+  const quoted = args.map((arg) => {
+    if (arg === '') {
+      return '""'
+    }
+    if (/[\s"'\\]/.test(arg)) {
+      return `"${arg.replace(/(["\\])/g, '\\$1')}"`
+    }
+    return arg
+  })
+  return `yt-dlp ${quoted.join(' ')}`
+}
+
 const ensureDirectoryExists = (dir?: string): void => {
  if (!dir) {
    return
@@ -732,6 +745,8 @@ class DownloadEngine extends EventEmitter {
    args.push('--ffmpeg-location', ffmpegPath)
    args.push(urlArg)

+    scopedLoggers.download.info('yt-dlp command:', formatYtDlpCommand(args))
+
    const controller = new AbortController()
    const ytdlpProcess = ytdlp.exec(args, {
      signal: controller.signal
--- a/src/main/lib/subscription-scheduler.ts
+++ b/src/main/lib/subscription-scheduler.ts
@@ -19,6 +19,11 @@ type ParserItem = {
  isoDate?: string
  pubDate?: string
  youtubeId?: string
+  content?: string
+  contentSnippet?: string
+  contentEncoded?: string
+  summary?: string
+  description?: string
  mediaThumbnail?: Array<{ url?: string }> | { url?: string }
  mediaContent?: Array<{ url?: string }> | { url?: string }
  enclosure?: Array<{ url?: string; type?: string }> | { url?: string; type?: string }
@@ -41,24 +46,19 @@ type FeedItem = {
  thumbnail?: string
 }

-const parser = new Parser<{ item: ParserItem }>({
+const parser = new Parser<Record<string, never>, ParserItem>({
  customFields: {
    item: [
      ['yt:videoId', 'youtubeId'],
      ['media:thumbnail', 'mediaThumbnail'],
      ['media:content', 'mediaContent'],
-      ['enclosure', 'enclosure']
+      ['enclosure', 'enclosure'],
+      ['content:encoded', 'contentEncoded'],
+      ['description', 'description']
    ]
  }
 })

-const clampIntervalHours = (value: number | undefined): number => {
-  if (!value || Number.isNaN(value)) {
-    return 3
-  }
-  return Math.min(24, Math.max(1, value))
-}
-
 const sanitizeDownloadId = (subscriptionId: string, itemId: string): string => {
  const base = Buffer.from(`${subscriptionId}:${itemId}`).toString('base64url')
  return `sub_${base}`
@@ -167,7 +167,7 @@ export class SubscriptionScheduler extends EventEmitter {
    if (this.timer) {
      clearTimeout(this.timer)
    }
-    const intervalHours = clampIntervalHours(settingsManager.get('subscriptionCheckIntervalHours'))
+    const intervalHours = 3 // Default check interval: 3 hours
    const delayMs = initialDelay ?? intervalHours * 60 * 60 * 1000
    this.timer = setTimeout(() => {
      void this.checkAll().finally(() => this.scheduleNextRun())
@@ -240,13 +240,18 @@ export class SubscriptionScheduler extends EventEmitter {
      }

      const latestItem = normalizedItems[0]
+      const coverUrl = this.resolveSubscriptionCover(
+        feed,
+        normalizedItems,
+        feedItems as ParserItem[]
+      )
      subscriptionManager.update(subscription.id, {
        status: 'up-to-date',
        lastSuccessAt: Date.now(),
        lastError: undefined,
        latestVideoTitle: latestItem?.title ?? subscription.latestVideoTitle,
        latestVideoPublishedAt: latestItem?.publishedAt ?? subscription.latestVideoPublishedAt,
-        coverUrl: (feed.image as { url?: string } | undefined)?.url ?? subscription.coverUrl,
+        coverUrl: coverUrl ?? subscription.coverUrl,
        title:
          typeof feed.title === 'string' && feed.title.trim().length > 0
            ? feed.title.trim()
@@ -366,6 +371,74 @@ export class SubscriptionScheduler extends EventEmitter {
      return mediaContent.url as string | undefined
    }

+    // Try to parse an image from HTML fields
+    const htmlCandidates = [
+      item.content,
+      item.contentEncoded,
+      item.description,
+      item.summary,
+      item.contentSnippet
+    ]
+    for (const html of htmlCandidates) {
+      const imageUrl = this.extractImageFromHtml(html)
+      if (imageUrl) {
+        return imageUrl
+      }
+    }
+
+    return undefined
+  }
+
+  private resolveSubscriptionCover(
+    feed: Parser.Output<ParserItem>,
+    items: FeedItem[],
+    rawItems: ParserItem[]
+  ): string | undefined {
+    const feedImageUrl = typeof feed.image?.url === 'string' ? feed.image.url : undefined
+    if (feedImageUrl) {
+      return feedImageUrl
+    }
+
+    const itunesImageUrl = typeof feed.itunes?.image === 'string' ? feed.itunes.image : undefined
+    if (itunesImageUrl) {
+      return itunesImageUrl
+    }
+
+    const itemThumbnail = items.find((item) => item.thumbnail)?.thumbnail
+    if (itemThumbnail) {
+      return itemThumbnail
+    }
+
+    for (const item of rawItems) {
+      const thumbnail = this.resolveThumbnail(item)
+      if (thumbnail) {
+        return thumbnail
+      }
+    }
+
+    return undefined
+  }
+
+  private extractImageFromHtml(html?: string): string | undefined {
+    if (!html) {
+      return undefined
+    }
+
+    const srcMatch = html.match(
+      /<img\b[^>]*\b(?:src|data-src|data-original)\b\s*=\s*(['"]?)([^'">\s]+)\1/i
+    )
+    if (srcMatch?.[2]) {
+      return srcMatch[2]
+    }
+
+    const srcsetMatch = html.match(/<img[^>]+srcset\s*=\s*(['"])([^'"]+)\1/i)
+    if (srcsetMatch?.[2]) {
+      const firstCandidate = srcsetMatch[2].split(',')[0]?.trim().split(/\s+/)[0]
+      if (firstCandidate) {
+        return firstCandidate
+      }
+    }
+
    return undefined
  }

--- a/src/main/settings.ts
+++ b/src/main/settings.ts
@@ -53,7 +53,11 @@ class SettingsManager {
  }

  getAll(): AppSettings {
-    return this.store.store
+    return {
+      ...defaultSettings,
+      downloadPath: DEFAULT_DOWNLOAD_PATH,
+      ...this.store.store
+    }
  }

  setAll(settings: Partial<AppSettings>): void {
--- a/src/renderer/src/App.tsx
+++ b/src/renderer/src/App.tsx
@@ -9,6 +9,7 @@ import { useCallback, useEffect, useRef, useState } from 'react'
 import { useTranslation } from 'react-i18next'
 import { HashRouter, Navigate, Route, Routes, useLocation, useNavigate } from 'react-router'
 import { toast } from 'sonner'
+import { ErrorBoundary } from './components/error/ErrorBoundary'
 import { ipcEvents, ipcServices } from './lib/ipc'
 import { About } from './pages/About'
 import { Home } from './pages/Home'
@@ -16,6 +17,7 @@ import { Settings } from './pages/Settings'
 import { Subscriptions } from './pages/Subscriptions'
 import { loadSettingsAtom, settingsAtom } from './store/settings'
 import { loadSubscriptionsAtom, setSubscriptionsAtom } from './store/subscriptions'
+import { updateAvailableAtom, updateReadyAtom } from './store/update'

 type Page = 'home' | 'subscriptions' | 'settings' | 'about'

@@ -51,6 +53,8 @@ function AppContent() {
  const setSubscriptions = useSetAtom(setSubscriptionsAtom)
  const [settings] = useAtom(settingsAtom)
  const loadSettings = useSetAtom(loadSettingsAtom)
+  const setUpdateReady = useSetAtom(updateReadyAtom)
+  const setUpdateAvailable = useSetAtom(updateAvailableAtom)
  const { t } = useTranslation()
  const updateDownloadInProgressRef = useRef(false)
  const analyticsScriptRef = useRef<HTMLScriptElement | null>(null)
@@ -174,8 +178,25 @@ function AppContent() {
      }
    }

-    const handleUpdateDownloaded = (_rawInfo: unknown) => {
+    const handleUpdateAvailable = (rawInfo: unknown) => {
+      const info = (rawInfo ?? {}) as { version?: string }
+      setUpdateAvailable({
+        available: true,
+        version: info.version
+      })
+    }
+
+    const handleUpdateDownloaded = (rawInfo: unknown) => {
+      const info = (rawInfo ?? {}) as { version?: string }
      resetDownloadState()
+      setUpdateReady({
+        ready: true,
+        version: info.version
+      })
+      setUpdateAvailable({
+        available: true,
+        version: info.version
+      })
    }

    const handleUpdateError = (rawMessage: unknown) => {
@@ -211,19 +232,21 @@ function AppContent() {
    }

    // Only listen to update events that should be shown globally
-    // update:available is handled in About page only
+    // update:available shows a visual indicator in the sidebar
+    ipcEvents.on('update:available', handleUpdateAvailable)
    ipcEvents.on('update:downloaded', handleUpdateDownloaded)
    ipcEvents.on('update:error', handleUpdateError)
    ipcEvents.on('update:download-progress', handleDownloadProgress)
    ipcEvents.on('update:show-notification', handleUpdateNotification)

    return () => {
+      ipcEvents.removeListener('update:available', handleUpdateAvailable)
      ipcEvents.removeListener('update:downloaded', handleUpdateDownloaded)
      ipcEvents.removeListener('update:error', handleUpdateError)
      ipcEvents.removeListener('update:download-progress', handleDownloadProgress)
      ipcEvents.removeListener('update:show-notification', handleUpdateNotification)
    }
-  }, [t])
+  }, [setUpdateAvailable, setUpdateReady, t])

  return (
    <div className="flex flex-row h-screen">
@@ -270,11 +293,13 @@ function AppContent() {

 function App() {
  return (
-    <ThemeProvider attribute="class" defaultTheme="system" enableSystem>
-      <HashRouter>
-        <AppContent />
-      </HashRouter>
-    </ThemeProvider>
+    <ErrorBoundary>
+      <ThemeProvider attribute="class" defaultTheme="system" enableSystem>
+        <HashRouter>
+          <AppContent />
+        </HashRouter>
+      </ThemeProvider>
+    </ErrorBoundary>
  )
 }

--- a/src/renderer/src/components/download/DownloadDialog.tsx
+++ b/src/renderer/src/components/download/DownloadDialog.tsx
@@ -78,11 +78,11 @@ const getQualityPreset = (settings: AppSettings): OneClickQualityPreset =>

 const buildAudioSelectors = (preset: OneClickQualityPreset): string[] => {
  if (preset === 'worst') {
-    return ['worstaudio']
+    return dedupe(['worstaudio', 'bestaudio'])
  }

  const abrLimit = qualityPresetToAudioAbr[preset]
-  // Remove 'best' fallback to ensure merging - only use 'bestaudio' variants
+  // Prefer audio-only selectors so video+audio merges remain valid.
  return dedupe([abrLimit ? `bestaudio[abr<=${abrLimit}]` : undefined, 'bestaudio'])
 }

@@ -90,8 +90,8 @@ const buildVideoFormatPreference = (settings: AppSettings): string => {
  const preset = getQualityPreset(settings)

  if (preset === 'worst') {
-    // Use worstvideo+worstaudio as fallback instead of 'worst' to ensure merging
-    return 'worstvideo+worstaudio'
+    // Prefer separate streams, then fall back to single-file selectors.
+    return 'worstvideo+worstaudio/worst/best'
  }

  const maxHeight = qualityPresetToVideoHeight[preset]
@@ -125,7 +125,7 @@ const buildVideoFormatPreference = (settings: AppSettings): string => {

 const buildAudioFormatPreference = (settings: AppSettings): string => {
  const selectors = buildAudioSelectors(getQualityPreset(settings))
-  return selectors.join('/')
+  return dedupe([...selectors, 'best']).join('/')
 }

 interface DownloadDialogProps {
@@ -790,11 +790,12 @@ export function DownloadDialog({ onOpenSupportedSites, onOpenSettings }: Downloa
        type,
        format:
          type === 'video'
-            ? videoInfoCardState.selectedVideoFormat
+            ? videoInfoCardState.selectedVideoFormat || undefined
            : type === 'extract'
              ? undefined
-              : videoInfoCardState.selectedAudioFormat,
-        audioFormat: type === 'video' ? videoInfoCardState.selectedAudioForVideo : undefined,
+              : videoInfoCardState.selectedAudioFormat || undefined,
+        audioFormat:
+          type === 'video' ? videoInfoCardState.selectedAudioForVideo || undefined : undefined,
        extractFormat:
          type === 'extract' ? videoInfoCardState.audioExtractor.extractFormat : undefined,
        extractQuality:
--- a/src/renderer/src/components/error/ErrorBoundary.tsx
+++ b/src/renderer/src/components/error/ErrorBoundary.tsx
@@ -0,0 +1,152 @@
+import { ipcServices } from '@renderer/lib/ipc'
+import { logger } from '@renderer/lib/logger'
+import { Component, type ErrorInfo, type ReactNode } from 'react'
+import { type ErrorInfo as ErrorInfoType, ErrorPage } from './ErrorPage'
+
+interface Props {
+  children: ReactNode
+  onError?: (error: Error, errorInfo: ErrorInfo) => void
+  fallback?: (errorInfo: ErrorInfoType) => ReactNode
+}
+
+interface State {
+  hasError: boolean
+  errorInfo: ErrorInfoType | null
+}
+
+export class ErrorBoundary extends Component<Props, State> {
+  constructor(props: Props) {
+    super(props)
+    this.state = {
+      hasError: false,
+      errorInfo: null
+    }
+  }
+
+  static getDerivedStateFromError(error: Error): Partial<State> {
+    const errorInfo = {
+      error,
+      timestamp: Date.now(),
+      context: {
+        url: window.location.href,
+        userAgent: navigator.userAgent,
+        platform: navigator.platform
+      }
+    }
+
+    // Log error details immediately
+    logger.error('ErrorBoundary: getDerivedStateFromError called', {
+      errorName: error.name,
+      errorMessage: error.message,
+      errorStack: error.stack,
+      url: errorInfo.context.url,
+      timestamp: errorInfo.timestamp
+    })
+
+    return {
+      hasError: true,
+      errorInfo
+    }
+  }
+
+  async componentDidCatch(error: Error, errorInfo: ErrorInfo): Promise<void> {
+    logger.error('ErrorBoundary caught an error:', {
+      errorName: error.name,
+      errorMessage: error.message,
+      errorStack: error.stack,
+      componentStack: errorInfo.componentStack,
+      errorInfo: JSON.stringify(errorInfo, null, 2)
+    })
+
+    // Get app version if available
+    let appVersion: string | undefined
+    try {
+      if (window?.api && ipcServices?.app) {
+        appVersion = await ipcServices.app.getVersion()
+        logger.info('ErrorBoundary: App version retrieved', { appVersion })
+      }
+    } catch (err) {
+      logger.warn('Failed to get app version:', err)
+    }
+
+    // Update state with component stack and version
+    if (this.state.errorInfo) {
+      this.setState({
+        errorInfo: {
+          ...this.state.errorInfo,
+          context: {
+            ...this.state.errorInfo.context,
+            version: appVersion
+          },
+          errorInfo: {
+            componentStack: errorInfo.componentStack || undefined
+          }
+        }
+      })
+    }
+
+    // Call optional error handler
+    if (this.props.onError) {
+      this.props.onError(error, errorInfo)
+    }
+
+    // Send error to main process if available
+    if (window?.api) {
+      try {
+        window.api.send('error:renderer', {
+          error: {
+            name: error.name,
+            message: error.message,
+            stack: error.stack
+          },
+          errorInfo: {
+            componentStack: errorInfo.componentStack
+          },
+          timestamp: Date.now(),
+          context: {
+            url: window.location.href,
+            userAgent: navigator.userAgent,
+            platform: navigator.platform,
+            version: appVersion
+          }
+        })
+      } catch (err) {
+        logger.error('Failed to send error to main process:', err)
+      }
+    }
+  }
+
+  handleReload = (): void => {
+    this.setState({
+      hasError: false,
+      errorInfo: null
+    })
+    window.location.reload()
+  }
+
+  handleGoHome = (): void => {
+    this.setState({
+      hasError: false,
+      errorInfo: null
+    })
+    window.location.hash = '/'
+    window.location.reload()
+  }
+
+  render(): ReactNode {
+    if (this.state.hasError && this.state.errorInfo) {
+      if (this.props.fallback) {
+        return this.props.fallback(this.state.errorInfo)
+      }
+      return (
+        <ErrorPage
+          errorInfo={this.state.errorInfo}
+          onReload={this.handleReload}
+          onGoHome={this.handleGoHome}
+        />
+      )
+    }
+
+    return this.props.children
+  }
+}
--- a/src/renderer/src/components/error/ErrorPage.tsx
+++ b/src/renderer/src/components/error/ErrorPage.tsx
@@ -0,0 +1,200 @@
+import { Button } from '@renderer/components/ui/button'
+import {
+  Card,
+  CardContent,
+  CardDescription,
+  CardHeader,
+  CardTitle
+} from '@renderer/components/ui/card'
+import { ScrollArea } from '@renderer/components/ui/scroll-area'
+import { Textarea } from '@renderer/components/ui/textarea'
+import { logger } from '@renderer/lib/logger'
+import { AlertTriangle, Copy, Home, RefreshCw } from 'lucide-react'
+import { useState } from 'react'
+import { useTranslation } from 'react-i18next'
+import { toast } from 'sonner'
+
+export interface ErrorInfo {
+  error: Error
+  errorInfo?: {
+    componentStack?: string
+  }
+  timestamp: number
+  context?: {
+    url?: string
+    userAgent?: string
+    platform?: string
+    version?: string
+  }
+}
+
+interface ErrorPageProps {
+  errorInfo: ErrorInfo
+  onReload?: () => void
+  onGoHome?: () => void
+}
+
+export function ErrorPage({ errorInfo, onReload, onGoHome }: ErrorPageProps) {
+  const { t } = useTranslation()
+  const [showDetails, setShowDetails] = useState(false)
+  const [copied, setCopied] = useState(false)
+
+  const errorReport = generateErrorReport(errorInfo)
+
+  const handleCopy = async () => {
+    try {
+      await navigator.clipboard.writeText(errorReport)
+      setCopied(true)
+      toast.success(t('error.copySuccess'))
+      setTimeout(() => setCopied(false), 2000)
+    } catch (error) {
+      logger.error('Failed to copy error report:', error)
+      toast.error(t('error.copyFailed'))
+    }
+  }
+
+  const handleReload = () => {
+    if (onReload) {
+      onReload()
+    } else {
+      window.location.reload()
+    }
+  }
+
+  return (
+    <div className="flex items-center justify-center min-h-screen bg-background p-4">
+      <Card className="w-full max-w-3xl">
+        <CardHeader>
+          <div className="flex items-center gap-3">
+            <div className="flex-shrink-0">
+              <AlertTriangle className="h-8 w-8 text-destructive" />
+            </div>
+            <div className="flex-1">
+              <CardTitle className="text-2xl">{t('error.title')}</CardTitle>
+              <CardDescription className="mt-2">{t('error.description')}</CardDescription>
+            </div>
+          </div>
+        </CardHeader>
+        <CardContent className="space-y-4">
+          {/* Error Message */}
+          <div className="rounded-md bg-destructive/10 border border-destructive/20 p-4">
+            <p className="text-sm font-medium text-destructive mb-1">{t('error.message')}</p>
+            <p className="text-sm text-foreground break-words">
+              {errorInfo.error.message || t('error.unknownError')}
+            </p>
+          </div>
+
+          {/* Actions */}
+          <div className="flex flex-wrap gap-2">
+            {onGoHome && (
+              <Button variant="outline" onClick={onGoHome}>
+                <Home className="h-4 w-4 mr-2" />
+                {t('error.goHome')}
+              </Button>
+            )}
+            <Button variant="outline" onClick={handleReload}>
+              <RefreshCw className="h-4 w-4 mr-2" />
+              {t('error.reload')}
+            </Button>
+            <Button variant="outline" onClick={handleCopy}>
+              <Copy className="h-4 w-4 mr-2" />
+              {copied ? t('error.copied') : t('error.copyReport')}
+            </Button>
+            <Button variant="ghost" onClick={() => setShowDetails(!showDetails)}>
+              {showDetails ? t('error.hideDetails') : t('error.showDetails')}
+            </Button>
+          </div>
+
+          {/* Error Details */}
+          {showDetails && (
+            <div className="space-y-4">
+              <div>
+                <p className="text-sm font-medium mb-2">{t('error.stackTrace')}</p>
+                <ScrollArea className="h-48 rounded-md border bg-muted/50 p-4">
+                  <pre className="text-xs font-mono whitespace-pre-wrap break-words">
+                    {errorInfo.error.stack || t('error.noStackTrace')}
+                  </pre>
+                </ScrollArea>
+              </div>
+
+              {errorInfo.errorInfo?.componentStack && (
+                <div>
+                  <p className="text-sm font-medium mb-2">{t('error.componentStack')}</p>
+                  <ScrollArea className="h-32 rounded-md border bg-muted/50 p-4">
+                    <pre className="text-xs font-mono whitespace-pre-wrap break-words">
+                      {errorInfo.errorInfo.componentStack}
+                    </pre>
+                  </ScrollArea>
+                </div>
+              )}
+
+              <div>
+                <p className="text-sm font-medium mb-2">{t('error.fullReport')}</p>
+                <Textarea
+                  readOnly
+                  value={errorReport}
+                  className="font-mono text-xs min-h-48"
+                  onClick={(e) => {
+                    const target = e.target as HTMLTextAreaElement
+                    target.select()
+                  }}
+                />
+              </div>
+            </div>
+          )}
+
+          {/* Help Text */}
+          <div className="rounded-md bg-muted/50 border p-4">
+            <p className="text-sm text-muted-foreground">{t('error.helpText')}</p>
+          </div>
+        </CardContent>
+      </Card>
+    </div>
+  )
+}
+
+function generateErrorReport(errorInfo: ErrorInfo): string {
+  const lines: string[] = []
+
+  lines.push('=== VidBee Error Report ===')
+  lines.push(`Timestamp: ${new Date(errorInfo.timestamp).toISOString()}`)
+  lines.push('')
+
+  if (errorInfo.context) {
+    lines.push('--- Context ---')
+    if (errorInfo.context.version) {
+      lines.push(`App Version: ${errorInfo.context.version}`)
+    }
+    if (errorInfo.context.platform) {
+      lines.push(`Platform: ${errorInfo.context.platform}`)
+    }
+    if (errorInfo.context.url) {
+      lines.push(`URL: ${errorInfo.context.url}`)
+    }
+    if (errorInfo.context.userAgent) {
+      lines.push(`User Agent: ${errorInfo.context.userAgent}`)
+    }
+    lines.push('')
+  }
+
+  lines.push('--- Error ---')
+  lines.push(`Name: ${errorInfo.error.name}`)
+  lines.push(`Message: ${errorInfo.error.message}`)
+  lines.push('')
+
+  if (errorInfo.error.stack) {
+    lines.push('--- Stack Trace ---')
+    lines.push(errorInfo.error.stack)
+    lines.push('')
+  }
+
+  if (errorInfo.errorInfo?.componentStack) {
+    lines.push('--- Component Stack ---')
+    lines.push(errorInfo.errorInfo.componentStack)
+    lines.push('')
+  }
+
+  lines.push('=== End of Report ===')
+
+  return lines.join('\n')
+}
--- a/src/renderer/src/components/ui/popover.tsx
+++ b/src/renderer/src/components/ui/popover.tsx
@@ -0,0 +1,39 @@
+import * as PopoverPrimitive from '@radix-ui/react-popover'
+import { cn } from '@renderer/lib/utils'
+import type * as React from 'react'
+
+function Popover({ ...props }: React.ComponentProps<typeof PopoverPrimitive.Root>) {
+  return <PopoverPrimitive.Root data-slot="popover" {...props} />
+}
+
+function PopoverTrigger({ ...props }: React.ComponentProps<typeof PopoverPrimitive.Trigger>) {
+  return <PopoverPrimitive.Trigger data-slot="popover-trigger" {...props} />
+}
+
+function PopoverContent({
+  className,
+  align = 'center',
+  sideOffset = 4,
+  ...props
+}: React.ComponentProps<typeof PopoverPrimitive.Content>) {
+  return (
+    <PopoverPrimitive.Portal>
+      <PopoverPrimitive.Content
+        data-slot="popover-content"
+        align={align}
+        sideOffset={sideOffset}
+        className={cn(
+          'bg-popover text-popover-foreground data-[state=open]:animate-in data-[state=closed]:animate-out data-[state=closed]:fade-out-0 data-[state=open]:fade-in-0 data-[state=closed]:zoom-out-95 data-[state=open]:zoom-in-95 data-[side=bottom]:slide-in-from-top-2 data-[side=left]:slide-in-from-right-2 data-[side=right]:slide-in-from-left-2 data-[side=top]:slide-in-from-bottom-2 z-50 w-72 origin-(--radix-popover-content-transform-origin) rounded-md border p-4 shadow-md outline-hidden',
+          className
+        )}
+        {...props}
+      />
+    </PopoverPrimitive.Portal>
+  )
+}
+
+function PopoverAnchor({ ...props }: React.ComponentProps<typeof PopoverPrimitive.Anchor>) {
+  return <PopoverPrimitive.Anchor data-slot="popover-anchor" {...props} />
+}
+
+export { Popover, PopoverTrigger, PopoverContent, PopoverAnchor }
--- a/src/renderer/src/components/ui/remote-image.tsx
+++ b/src/renderer/src/components/ui/remote-image.tsx
@@ -67,6 +67,8 @@ interface RemoteImageProps {
 * />
 * ```
 */
+const IMAGE_LOAD_TIMEOUT_MS = 30000
+
 export function RemoteImage({
  src,
  alt,
@@ -91,8 +93,10 @@ export function RemoteImage({
  const imageSrc = shouldUseCache ? cachedSrc : (src ?? undefined)

  const [isImageLoading, setIsImageLoading] = useState(true)
+  const [timedOutSrc, setTimedOutSrc] = useState<string | null>(null)
  const isCacheLoading = shouldUseCache && src && cachedSrc === undefined
-  const isLoading = isCacheLoading || isImageLoading
+  const hasTimedOut = Boolean(src) && timedOutSrc === src
+  const isLoading = !hasTimedOut && (isCacheLoading || isImageLoading)

  useEffect(() => {
    if (imageSrc) {
@@ -102,6 +106,19 @@ export function RemoteImage({
    }
  }, [imageSrc])

+  useEffect(() => {
+    if (!src || hasTimedOut || !isLoading) return
+
+    const timeoutId = window.setTimeout(() => {
+      setTimedOutSrc(src)
+      setIsImageLoading(false)
+    }, IMAGE_LOAD_TIMEOUT_MS)
+
+    return () => {
+      window.clearTimeout(timeoutId)
+    }
+  }, [src, hasTimedOut, isLoading])
+
  useEffect(() => {
    onLoadingChange?.(isLoading)
  }, [isLoading, onLoadingChange])
--- a/src/renderer/src/components/ui/sidebar.tsx
+++ b/src/renderer/src/components/ui/sidebar.tsx
@@ -1,22 +1,13 @@
 import { Button } from '@renderer/components/ui/button'
-import {
-  DropdownMenu,
-  DropdownMenuContent,
-  DropdownMenuItem,
-  DropdownMenuTrigger
-} from '@renderer/components/ui/dropdown-menu'
 import { Tooltip, TooltipContent, TooltipTrigger } from '@renderer/components/ui/tooltip'
-import { saveSettingAtom } from '@renderer/store/settings'
-import { type LanguageCode, languageList, normalizeLanguageCode } from '@shared/languages'
-import { useSetAtom } from 'jotai'
+import { useAtom } from 'jotai'
 import { useTranslation } from 'react-i18next'
-import { toast } from 'sonner'
 import '../../assets/title-bar.css'
+import { updateAvailableAtom } from '@renderer/store/update'
 import MingcuteCheckCircleFill from '~icons/mingcute/check-circle-fill'
 import MingcuteCheckCircleLine from '~icons/mingcute/check-circle-line'
 import MingcuteDownload3Fill from '~icons/mingcute/download-3-fill'
 import MingcuteDownload3Line from '~icons/mingcute/download-3-line'
-import MingcuteGlobeLine from '~icons/mingcute/globe-2-line'
 import MingcuteInformationFill from '~icons/mingcute/information-fill'
 import MingcuteInformationLine from '~icons/mingcute/information-line'
 import MingcuteRssFill from '~icons/mingcute/rss-fill'
@@ -53,10 +44,8 @@ interface SidebarProps {
 }

 export function Sidebar({ currentPage, onPageChange, onOpenSupportedSites }: SidebarProps) {
-  const { t, i18n } = useTranslation()
-  const saveSetting = useSetAtom(saveSettingAtom)
-
-  const languageOptions = languageList
+  const { t } = useTranslation()
+  const [updateAvailable] = useAtom(updateAvailableAtom)

  const navigationItems: NavigationItem[] = [
    {
@@ -105,20 +94,6 @@ export function Sidebar({ currentPage, onPageChange, onOpenSupportedSites }: Sid
    }
  ]

-  const activeLanguageCode = normalizeLanguageCode(i18n.language)
-  const currentLanguage =
-    languageOptions.find((option) => option.value === activeLanguageCode) ?? languageOptions[0]
-
-  const handleLanguageChange = async (value: LanguageCode) => {
-    if (activeLanguageCode === value) {
-      return
-    }
-
-    await saveSetting({ key: 'language', value })
-    await i18n.changeLanguage(value)
-    toast.success(t('notifications.settingsSaved'))
-  }
-
  const renderNavigationItem = (item: NavigationItem, showLabel = true) => {
    const isActive = item.id !== 'supported-sites' && currentPage === item.id
    const IconComponent = isActive ? item.icon.active : item.icon.inactive
@@ -161,47 +136,11 @@ export function Sidebar({ currentPage, onPageChange, onOpenSupportedSites }: Sid

      <div className="flex-1" />

-      {/* Language Selector */}
-      <div className="flex flex-col items-center gap-1">
-        <DropdownMenu>
-          <Tooltip>
-            <TooltipTrigger asChild>
-              <DropdownMenuTrigger asChild>
-                <Button variant="ghost" size="icon" className="no-drag rounded-2xl w-12 h-12">
-                  <MingcuteGlobeLine className="h-5! w-5!" />
-                </Button>
-              </DropdownMenuTrigger>
-            </TooltipTrigger>
-            <TooltipContent side="right">
-              <p>{t('settings.language')}</p>
-            </TooltipContent>
-          </Tooltip>
-          <DropdownMenuContent side="right" align="end">
-            {languageOptions.map((option) => {
-              const isActive = option.value === currentLanguage.value
-
-              return (
-                <DropdownMenuItem
-                  key={option.value}
-                  onClick={() => void handleLanguageChange(option.value)}
-                  className={isActive ? 'font-semibold bg-muted focus:bg-muted' : undefined}
-                  aria-current={isActive}
-                >
-                  <div className="flex items-center gap-2">
-                    <span className={`${option.flag} rounded-xs text-base`} aria-hidden="true" />
-                    <span lang={option.hreflang}>{option.name}</span>
-                  </div>
-                </DropdownMenuItem>
-              )
-            })}
-          </DropdownMenuContent>
-        </DropdownMenu>
-      </div>
-
      {/* Bottom Navigation Items */}
      {bottomNavigationItems.map((item) => {
        const isActive = currentPage === item.id
        const IconComponent = isActive ? item.icon.active : item.icon.inactive
+        const showUpdateDot = item.id === 'about' && updateAvailable.available

        return (
          <div key={item.id} className="flex flex-col items-center gap-1">
@@ -211,9 +150,14 @@ export function Sidebar({ currentPage, onPageChange, onOpenSupportedSites }: Sid
                  variant="ghost"
                  size="icon"
                  onClick={() => onPageChange(item.id)}
-                  className={`no-drag rounded-2xl w-12 h-12 ${isActive ? 'bg-primary/10' : ''}`}
+                  className={`no-drag rounded-2xl w-12 h-12 relative ${
+                    isActive ? 'bg-primary/10' : ''
+                  }`}
                >
                  <IconComponent className={`h-5! w-5! ${isActive ? 'text-primary' : ''}`} />
+                  {showUpdateDot ? (
+                    <span className="absolute top-2 right-2 h-2 w-2 rounded-full bg-red-500" />
+                  ) : null}
                </Button>
              </TooltipTrigger>
              <TooltipContent side="right">
--- a/src/renderer/src/components/video/FormatSelector.tsx
+++ b/src/renderer/src/components/video/FormatSelector.tsx
@@ -155,9 +155,20 @@ export function FormatSelector({
    setVideoFormats(finalVideos)
    setAudioFormats(finalAudios)

-    // Auto-select best format based on preferences
-    if (finalVideos.length > 0 && !selectedVideo) {
-      const preferred = pickVideoFormatForPreset(finalVideos, settings.oneClickQuality)
+    // Auto-select best format based on preferences.
+    // If no separate audio formats exist, prefer muxed video formats (with audio).
+    const videosWithAudio = finalVideos.filter(
+      (format) => format.acodec && format.acodec !== 'none'
+    )
+    const autoVideos =
+      finalAudios.length > 0
+        ? finalVideos
+        : videosWithAudio.length > 0
+          ? videosWithAudio
+          : finalVideos
+
+    if (autoVideos.length > 0 && !selectedVideo) {
+      const preferred = pickVideoFormatForPreset(autoVideos, settings.oneClickQuality)
      if (preferred) {
        setSelectedVideo(preferred.format_id)
        onVideoFormatChange?.(preferred.format_id)
@@ -226,67 +237,79 @@ export function FormatSelector({
  }

  if (type === 'video') {
+    if (videoFormats.length === 0 && audioFormats.length === 0) {
+      return null
+    }
+
    return (
      <div className="space-y-5">
-        <div className="space-y-3">
-          <Label className="text-sm font-semibold">{t('download.selectVideoFormat')}</Label>
-          <Select
-            value={selectedVideo}
-            onValueChange={(value) => {
-              setSelectedVideo(value)
-              onVideoFormatChange?.(value)
-            }}
-          >
-            <SelectTrigger className="h-11">
-              <SelectValue />
-            </SelectTrigger>
-            <SelectContent className="max-h-[300px] p-1.5">
-              {videoFormats.map((format) => (
-                <SelectItem
-                  key={format.format_id}
-                  value={format.format_id}
-                  className="cursor-pointer py-2.5"
-                >
-                  <span className="text-sm">{formatVideoLabel(format)}</span>
-                </SelectItem>
-              ))}
-            </SelectContent>
-          </Select>
-        </div>
+        {videoFormats.length > 0 && (
+          <div className="space-y-3">
+            <Label className="text-sm font-semibold">{t('download.selectVideoFormat')}</Label>
+            <Select
+              value={selectedVideo}
+              onValueChange={(value) => {
+                setSelectedVideo(value)
+                onVideoFormatChange?.(value)
+              }}
+            >
+              <SelectTrigger className="h-11">
+                <SelectValue />
+              </SelectTrigger>
+              <SelectContent className="max-h-[300px] p-1.5">
+                {videoFormats.map((format) => (
+                  <SelectItem
+                    key={format.format_id}
+                    value={format.format_id}
+                    className="cursor-pointer py-2.5"
+                  >
+                    <span className="text-sm">{formatVideoLabel(format)}</span>
+                  </SelectItem>
+                ))}
+              </SelectContent>
+            </Select>
+          </div>
+        )}

-        <div className="space-y-3">
-          <Label className="text-sm font-semibold">{t('download.selectAudioFormat')}</Label>
-          <Select
-            value={selectedAudio}
-            onValueChange={(value) => {
-              setSelectedAudio(value)
-              onAudioFormatChange?.(value)
-            }}
-          >
-            <SelectTrigger className="h-11">
-              <SelectValue />
-            </SelectTrigger>
-            <SelectContent className="max-h-[300px] p-1.5">
-              <SelectItem value="none" className="cursor-pointer py-2.5">
-                <span className="text-sm">{t('download.noAudio')}</span>
-              </SelectItem>
-              {audioFormats.map((format) => (
-                <SelectItem
-                  key={format.format_id}
-                  value={format.format_id}
-                  className="cursor-pointer py-2.5"
-                >
-                  <span className="text-sm">{formatAudioLabel(format)}</span>
+        {audioFormats.length > 0 && (
+          <div className="space-y-3">
+            <Label className="text-sm font-semibold">{t('download.selectAudioFormat')}</Label>
+            <Select
+              value={selectedAudio}
+              onValueChange={(value) => {
+                setSelectedAudio(value)
+                onAudioFormatChange?.(value)
+              }}
+            >
+              <SelectTrigger className="h-11">
+                <SelectValue />
+              </SelectTrigger>
+              <SelectContent className="max-h-[300px] p-1.5">
+                <SelectItem value="none" className="cursor-pointer py-2.5">
+                  <span className="text-sm">{t('download.noAudio')}</span>
                </SelectItem>
-              ))}
-            </SelectContent>
-          </Select>
-        </div>
+                {audioFormats.map((format) => (
+                  <SelectItem
+                    key={format.format_id}
+                    value={format.format_id}
+                    className="cursor-pointer py-2.5"
+                  >
+                    <span className="text-sm">{formatAudioLabel(format)}</span>
+                  </SelectItem>
+                ))}
+              </SelectContent>
+            </Select>
+          </div>
+        )}
      </div>
    )
  }

  // Audio only
+  if (audioFormats.length === 0) {
+    return null
+  }
+
  return (
    <div className="space-y-3">
      <Label className="text-sm font-semibold">{t('download.selectFormat')}</Label>
--- a/src/renderer/src/lib/logger.ts
+++ b/src/renderer/src/lib/logger.ts
@@ -0,0 +1,20 @@
+/**
+ * Renderer process logger utility
+ * Use electron-log/renderer which automatically forwards logs to main process
+ */
+
+import log from 'electron-log/renderer'
+
+// Export electron-log instance
+export default log
+
+// Export commonly used logging methods
+export const logger = log
+
+// Predefined scoped loggers
+export const scopedLoggers = {
+  renderer: log.scope('renderer'),
+  error: log.scope('error'),
+  component: log.scope('component'),
+  api: log.scope('api')
+}
--- a/src/renderer/src/locales/ar.json
+++ b/src/renderer/src/locales/ar.json
@@ -371,8 +371,7 @@
    "showMoreFormats": "إظهار المزيد من خيارات التنسيق",
    "showMoreFormatsDescription": "عرض خيارات التنسيق الإضافية في الواجهة",
    "subscriptionDefaults": {
-      "filenameDescription": "النمط المستخدم عندما لا يتجاوز الاشتراك اسم ملفه.",
-      "intervalDescription": "عدد مرات فحص VidBee لكل تغذية اشتراك (1-24 ساعة)."
+      "filenameDescription": "النمط المستخدم عندما لا يتجاوز الاشتراك اسم ملفه."
    },
    "system": "النظام",
    "theme": "المظهر",
@@ -393,7 +392,6 @@
      "description": "التحكم في مكان تخزين تحميلات الاشتراكات وعدد مرات فحص VidBee للفيديوهات الجديدة.",
      "downloadDirectory": "مجلد التحميل",
      "filenameTemplate": "قالب اسم الملف (الملف فقط)",
-      "checkInterval": "فترة الفحص (ساعات)",
      "onlyLatest": "تحميل أحدث فيديو فقط",
      "onlyLatestDescription": "عند التفعيل، يتخطى VidBee عناصر المتراكمة القديمة ويأخذ فقط آخر تحميل."
    },
--- a/src/renderer/src/locales/de.json
+++ b/src/renderer/src/locales/de.json
@@ -371,8 +371,7 @@
    "showMoreFormats": "Mehr Formatoptionen anzeigen",
    "showMoreFormatsDescription": "Zusätzliche Formatoptionen in der Benutzeroberfläche anzeigen",
    "subscriptionDefaults": {
-      "filenameDescription": "Muster, das verwendet wird, wenn ein Abonnement seinen Dateinamen nicht überschreibt.",
-      "intervalDescription": "Wie oft VidBee jeden Abonnement-Feed überprüft (1-24 Stunden)."
+      "filenameDescription": "Muster, das verwendet wird, wenn ein Abonnement seinen Dateinamen nicht überschreibt."
    },
    "system": "System",
    "theme": "Design",
@@ -393,7 +392,6 @@
      "description": "Steuern Sie, wo Abonnement-Downloads gespeichert werden und wie oft VidBee nach neuen Videos sucht.",
      "downloadDirectory": "Download-Verzeichnis",
      "filenameTemplate": "Dateinamen-Vorlage (nur Datei)",
-      "checkInterval": "Prüfintervall (Stunden)",
      "onlyLatest": "Nur das neueste Video herunterladen",
      "onlyLatestDescription": "Wenn aktiviert, überspringt VidBee ältere Backlog-Elemente und lädt nur den neuesten Upload."
    },
--- a/src/renderer/src/locales/en.json
+++ b/src/renderer/src/locales/en.json
@@ -50,10 +50,12 @@
      "documentation": "Help center",
      "documentationDescription": "Guides, FAQs, and common workflows.",
      "feedback": "Feedback & issues",
-      "feedbackDescription": "Share ideas or report issues on GitHub.",
-      "githubIssues": "GitHub Issues",
+      "feedbackDescription": "Share ideas, report issues, or provide feedback through multiple channels.",
+      "githubIssues": "GitHub",
      "githubIssuesDescription": "Report bugs or request features on GitHub.",
-      "discord": "Discord Community",
+      "xFeedback": "Twitter",
+      "xFeedbackDescription": "Share feedback or suggestions on X by mentioning @nexmoex.",
+      "discord": "Discord",
      "discordDescription": "Join our Discord community for discussions and support.",
      "license": "License",
      "licenseDescription": "Review the open-source license terms.",
@@ -204,6 +206,25 @@
      "subscription": "Subscription"
    }
  },
+  "error": {
+    "title": "Something went wrong",
+    "description": "An unexpected error occurred. Please try reloading the application or report this issue if it persists.",
+    "message": "Error Message",
+    "unknownError": "Unknown error occurred",
+    "goHome": "Go Home",
+    "reload": "Reload App",
+    "copyReport": "Copy Error Report",
+    "copied": "Copied!",
+    "copySuccess": "Error report copied to clipboard",
+    "copyFailed": "Failed to copy error report",
+    "showDetails": "Show Details",
+    "hideDetails": "Hide Details",
+    "stackTrace": "Stack Trace",
+    "componentStack": "Component Stack",
+    "noStackTrace": "No stack trace available",
+    "fullReport": "Full Error Report",
+    "helpText": "If this error persists, please copy the error report above and share it with the support team. You can find contact information in the About page."
+  },
  "errors": {
    "clickToCopy": "Click to copy details",
    "clipboardEmpty": "Clipboard is empty",
@@ -379,6 +400,7 @@
    "fileSelectError": "Failed to select file",
    "general": "General",
    "language": "Language",
+    "languageDescription": "Choose your preferred language for the application interface",
    "light": "Light",
    "hideDockIcon": "Hide Dock icon",
    "hideDockIconDescription": "Remove VidBee from the macOS Dock. Use the menu bar or tray icon to reopen the app.",
@@ -412,8 +434,7 @@
    "showMoreFormats": "Show more format options",
    "showMoreFormatsDescription": "Display additional format options in the interface",
    "subscriptionDefaults": {
-      "filenameDescription": "Pattern used when a subscription does not override its filename.",
-      "intervalDescription": "How often VidBee checks each subscription feed (1-24 hours)."
+      "filenameDescription": "Pattern used when a subscription does not override its filename."
    },
    "system": "System",
    "theme": "Theme",
@@ -434,7 +455,6 @@
      "description": "Control where subscription downloads are stored and how often VidBee checks for new videos.",
      "downloadDirectory": "Download directory",
      "filenameTemplate": "Filename template",
-      "checkInterval": "Check interval (hours)",
      "onlyLatest": "Download only the latest video",
      "onlyLatestDescription": "When enabled, VidBee skips older backlog items and only grabs the newest upload."
    },
--- a/src/renderer/src/locales/es.json
+++ b/src/renderer/src/locales/es.json
@@ -371,8 +371,7 @@
    "showMoreFormats": "Mostrar más opciones de formato",
    "showMoreFormatsDescription": "Mostrar opciones de formato adicionales en la interfaz",
    "subscriptionDefaults": {
-      "filenameDescription": "Patrón usado cuando una suscripción no sobrescribe su nombre de archivo.",
-      "intervalDescription": "Con qué frecuencia VidBee verifica cada feed de suscripción (1-24 horas)."
+      "filenameDescription": "Patrón usado cuando una suscripción no sobrescribe su nombre de archivo."
    },
    "system": "Sistema",
    "theme": "Tema",
@@ -393,7 +392,6 @@
      "description": "Controla dónde se almacenan las descargas de suscripciones y con qué frecuencia VidBee verifica nuevos videos.",
      "downloadDirectory": "Directorio de descarga",
      "filenameTemplate": "Plantilla de nombre de archivo (solo archivo)",
-      "checkInterval": "Intervalo de verificación (horas)",
      "onlyLatest": "Descargar solo el último video",
      "onlyLatestDescription": "Cuando está habilitado, VidBee omite elementos antiguos del backlog y solo toma la última carga."
    },
--- a/src/renderer/src/locales/fr.json
+++ b/src/renderer/src/locales/fr.json
@@ -371,8 +371,7 @@
    "showMoreFormats": "Afficher plus d'options de format",
    "showMoreFormatsDescription": "Afficher des options de format supplémentaires dans l'interface",
    "subscriptionDefaults": {
-      "filenameDescription": "Modèle utilisé lorsqu’un abonnement ne remplace pas son nom de fichier.",
-      "intervalDescription": "À quelle fréquence VidBee vérifie chaque flux d'abonnement (1 à 24 heures)."
+      "filenameDescription": "Modèle utilisé lorsqu’un abonnement ne remplace pas son nom de fichier."
    },
    "system": "Système",
    "theme": "Thème",
@@ -485,7 +484,6 @@
      "title": "Ajouter un flux RSS"
    },
    "defaults": {
-      "checkInterval": "Intervalle de vérification (heures)",
      "description": "Contrôlez où les téléchargements par abonnement sont stockés et à quelle fréquence VidBee recherche de nouvelles vidéos.",
      "downloadDirectory": "Répertoire de téléchargement",
      "filenameTemplate": "Modèle de nom de fichier (fichier uniquement)",
--- a/src/renderer/src/locales/id.json
+++ b/src/renderer/src/locales/id.json
@@ -371,8 +371,7 @@
    "showMoreFormats": "Tampilkan lebih banyak opsi format",
    "showMoreFormatsDescription": "Tampilkan opsi format tambahan di antarmuka",
    "subscriptionDefaults": {
-      "filenameDescription": "Pola yang digunakan ketika berlangganan tidak menimpa nama filenya.",
-      "intervalDescription": "Seberapa sering VidBee memeriksa setiap feed berlangganan (1-24 jam)."
+      "filenameDescription": "Pola yang digunakan ketika berlangganan tidak menimpa nama filenya."
    },
    "system": "Sistem",
    "theme": "Tema",
@@ -393,7 +392,6 @@
      "description": "Kontrol di mana unduhan berlangganan disimpan dan seberapa sering VidBee memeriksa video baru.",
      "downloadDirectory": "Direktori unduhan",
      "filenameTemplate": "Template nama file (hanya file)",
-      "checkInterval": "Interval pemeriksaan (jam)",
      "onlyLatest": "Unduh hanya video terbaru",
      "onlyLatestDescription": "Saat diaktifkan, VidBee melewati item backlog lama dan hanya mengambil unggahan terbaru."
    },
--- a/src/renderer/src/locales/it.json
+++ b/src/renderer/src/locales/it.json
@@ -371,8 +371,7 @@
    "showMoreFormats": "Mostra più opzioni formato",
    "showMoreFormatsDescription": "Visualizza opzioni di formato aggiuntive nell'interfaccia",
    "subscriptionDefaults": {
-      "filenameDescription": "Modello utilizzato quando una sottoscrizione non sovrascrive il relativo nome file.",
-      "intervalDescription": "La frequenza con cui VidBee controlla ciascun feed di abbonamento (1-24 ore)."
+      "filenameDescription": "Modello utilizzato quando una sottoscrizione non sovrascrive il relativo nome file."
    },
    "system": "Sistema",
    "theme": "Tema",
@@ -485,7 +484,6 @@
      "title": "Aggiungi RSS"
    },
    "defaults": {
-      "checkInterval": "Intervallo di controllo (ore)",
      "description": "Controlla dove vengono archiviati i download degli abbonamenti e la frequenza con cui VidBee verifica la presenza di nuovi video.",
      "downloadDirectory": "Scarica la directory",
      "filenameTemplate": "Modello nome file (solo file)",
--- a/src/renderer/src/locales/ja.json
+++ b/src/renderer/src/locales/ja.json
@@ -371,8 +371,7 @@
    "showMoreFormats": "より多くのフォーマットオプションを表示",
    "showMoreFormatsDescription": "インターフェースに追加のフォーマットオプションを表示",
    "subscriptionDefaults": {
-      "filenameDescription": "サブスクリプションがそのファイル名をオーバーライドしない場合に使用されるパターン。",
-      "intervalDescription": "VidBee が各サブスクリプション フィードをチェックする頻度 (1 ～ 24 時間)。"
+      "filenameDescription": "サブスクリプションがそのファイル名をオーバーライドしない場合に使用されるパターン。"
    },
    "system": "システム",
    "theme": "テーマ",
@@ -485,7 +484,6 @@
      "title": "RSSを追加"
    },
    "defaults": {
-      "checkInterval": "チェック間隔(時間)",
      "description": "サブスクリプションのダウンロードが保存される場所と、VidBee が新しいビデオをチェックする頻度を制御します。",
      "downloadDirectory": "ダウンロードディレクトリ",
      "filenameTemplate": "ファイル名のテンプレート (ファイルのみ)",
--- a/src/renderer/src/locales/ko.json
+++ b/src/renderer/src/locales/ko.json
@@ -371,8 +371,7 @@
    "showMoreFormats": "더 많은 형식 옵션 표시",
    "showMoreFormatsDescription": "인터페이스에 추가 형식 옵션 표시",
    "subscriptionDefaults": {
-      "filenameDescription": "구독이 파일 이름을 재정의하지 않을 때 사용되는 패턴입니다.",
-      "intervalDescription": "VidBee가 각 구독 피드를 확인하는 빈도(1~24시간)."
+      "filenameDescription": "구독이 파일 이름을 재정의하지 않을 때 사용되는 패턴입니다."
    },
    "system": "시스템",
    "theme": "테마",
@@ -485,7 +484,6 @@
      "title": "RSS 추가"
    },
    "defaults": {
-      "checkInterval": "확인 간격(시간)",
      "description": "구독 다운로드가 저장되는 위치와 VidBee가 새 비디오를 확인하는 빈도를 제어합니다.",
      "downloadDirectory": "디렉토리 다운로드",
      "filenameTemplate": "파일 이름 템플릿(파일만)",
--- a/src/renderer/src/locales/pt.json
+++ b/src/renderer/src/locales/pt.json
@@ -371,8 +371,7 @@
    "showMoreFormats": "Mostrar mais opções de formato",
    "showMoreFormatsDescription": "Exibir opções de formato adicionais na interface",
    "subscriptionDefaults": {
-      "filenameDescription": "Padrão usado quando uma assinatura não substitui seu nome de arquivo.",
-      "intervalDescription": "Com que frequência o VidBee verifica cada feed de assinatura (1 a 24 horas)."
+      "filenameDescription": "Padrão usado quando uma assinatura não substitui seu nome de arquivo."
    },
    "system": "Sistema",
    "theme": "Tema",
@@ -485,7 +484,6 @@
      "title": "Adicionar RSS"
    },
    "defaults": {
-      "checkInterval": "Intervalo de verificação (horas)",
      "description": "Controle onde os downloads de assinaturas são armazenados e com que frequência o VidBee verifica novos vídeos.",
      "downloadDirectory": "Baixar diretório",
      "filenameTemplate": "Modelo de nome de arquivo (somente arquivo)",
--- a/src/renderer/src/locales/ru.json
+++ b/src/renderer/src/locales/ru.json
@@ -371,8 +371,7 @@
    "showMoreFormats": "Показать больше вариантов форматов",
    "showMoreFormatsDescription": "Отображать дополнительные варианты форматов в интерфейсе",
    "subscriptionDefaults": {
-      "filenameDescription": "Шаблон, используемый, когда подписка не переопределяет имя файла.",
-      "intervalDescription": "Как часто VidBee проверяет каждый канал подписки (1-24 часа)."
+      "filenameDescription": "Шаблон, используемый, когда подписка не переопределяет имя файла."
    },
    "system": "Системная",
    "theme": "Тема",
@@ -393,7 +392,6 @@
      "description": "Управляйте, где хранятся загрузки подписок и как часто VidBee проверяет новые видео.",
      "downloadDirectory": "Директория загрузки",
      "filenameTemplate": "Шаблон имени файла (только файл)",
-      "checkInterval": "Интервал проверки (часы)",
      "onlyLatest": "Загружать только последнее видео",
      "onlyLatestDescription": "При включении VidBee пропускает старые элементы из очереди и загружает только последнюю загрузку."
    },
--- a/src/renderer/src/locales/zh-TW.json
+++ b/src/renderer/src/locales/zh-TW.json
@@ -372,8 +372,7 @@
    "showMoreFormats": "顯示更多格式選項",
    "showMoreFormatsDescription": "在介面中顯示額外的格式選項",
    "subscriptionDefaults": {
-      "filenameDescription": "當訂閱不覆蓋其文件名時使用的模式。",
-      "intervalDescription": "VidBee 檢查每個訂閱源的頻率（1-24 小時）。"
+      "filenameDescription": "當訂閱不覆蓋其文件名時使用的模式。"
    },
    "system": "系統",
    "theme": "主題",
@@ -486,7 +485,6 @@
      "title": "添加RSS"
    },
    "defaults": {
-      "checkInterval": "檢查間隔（小時）",
      "description": "控制訂閱下載的存儲位置以及 VidBee 檢查新視頻的頻率。",
      "downloadDirectory": "下載目錄",
      "filenameTemplate": "文件名模板（僅限文件）",
--- a/src/renderer/src/locales/zh.json
+++ b/src/renderer/src/locales/zh.json
@@ -372,8 +372,7 @@
    "showMoreFormats": "显示更多格式选项",
    "showMoreFormatsDescription": "在界面中显示额外的格式选项",
    "subscriptionDefaults": {
-      "filenameDescription": "当订阅不覆盖其文件名时使用的模式。",
-      "intervalDescription": "VidBee 检查每个订阅源的频率（1-24 小时）。"
+      "filenameDescription": "当订阅不覆盖其文件名时使用的模式。"
    },
    "system": "系统",
    "theme": "主题",
@@ -486,7 +485,6 @@
      "title": "添加RSS"
    },
    "defaults": {
-      "checkInterval": "检查间隔（小时）",
      "description": "控制订阅下载的存储位置以及 VidBee 检查新视频的频率。",
      "downloadDirectory": "下载目录",
      "filenameTemplate": "文件名模板（仅限文件）",
--- a/src/renderer/src/main.tsx
+++ b/src/renderer/src/main.tsx
@@ -6,6 +6,82 @@ import { StrictMode } from 'react'
 import { createRoot } from 'react-dom/client'
 import App from './App'
 import './i18n'
+import { logger } from './lib/logger'
+
+// Setup global error handlers
+setupGlobalErrorHandlers()
+
+// Get app version asynchronously
+let appVersion: string | undefined
+if (window?.api && window.electron?.ipcRenderer) {
+  import('./lib/ipc')
+    .then(({ ipcServices }) => ipcServices.app.getVersion())
+    .then((version) => {
+      appVersion = version
+    })
+    .catch((err) => {
+      logger.warn('Failed to get app version for error reporting:', err)
+    })
+}
+
+function setupGlobalErrorHandlers(): void {
+  // Handle uncaught JavaScript errors
+  window.addEventListener('error', (event) => {
+    logger.error('Uncaught error:', event.error)
+
+    if (window?.api) {
+      try {
+        window.api.send('error:renderer', {
+          error: {
+            name: event.error?.name || 'Error',
+            message: event.error?.message || event.message || 'Unknown error',
+            stack: event.error?.stack || event.filename
+          },
+          timestamp: Date.now(),
+          context: {
+            url: window.location.href,
+            userAgent: navigator.userAgent,
+            platform: navigator.platform,
+            version: appVersion,
+            filename: event.filename,
+            lineno: event.lineno,
+            colno: event.colno
+          }
+        })
+      } catch (err) {
+        logger.error('Failed to send error to main process:', err)
+      }
+    }
+  })
+
+  // Handle unhandled promise rejections
+  window.addEventListener('unhandledrejection', (event) => {
+    logger.error('Unhandled promise rejection:', event.reason)
+
+    if (window?.api) {
+      try {
+        const error = event.reason instanceof Error ? event.reason : new Error(String(event.reason))
+
+        window.api.send('error:renderer', {
+          error: {
+            name: error.name || 'UnhandledPromiseRejection',
+            message: error.message || String(event.reason),
+            stack: error.stack
+          },
+          timestamp: Date.now(),
+          context: {
+            url: window.location.href,
+            userAgent: navigator.userAgent,
+            platform: navigator.platform,
+            version: appVersion
+          }
+        })
+      } catch (err) {
+        logger.error('Failed to send error to main process:', err)
+      }
+    }
+  })
+}

 const rootElement = document.getElementById('root')
 if (!rootElement) {
--- a/src/renderer/src/pages/About.tsx
+++ b/src/renderer/src/pages/About.tsx
@@ -1,12 +1,6 @@
 import { Badge } from '@renderer/components/ui/badge'
 import { Button } from '@renderer/components/ui/button'
-import {
-  Card,
-  CardContent,
-  CardDescription,
-  CardHeader,
-  CardTitle
-} from '@renderer/components/ui/card'
+import { Card, CardContent, CardHeader, CardTitle } from '@renderer/components/ui/card'
 import { Progress } from '@renderer/components/ui/progress'
 import { Switch } from '@renderer/components/ui/switch'
 import { useAtom, useSetAtom } from 'jotai'
@@ -18,14 +12,16 @@ import {
  Github,
  Link as LinkIcon,
  MessageCircle,
+  MessageSquare,
  RefreshCw,
  Twitter
 } from 'lucide-react'
-import { useEffect, useMemo, useState } from 'react'
+import { useCallback, useEffect, useMemo, useState } from 'react'
 import { useTranslation } from 'react-i18next'
 import { toast } from 'sonner'
 import { ipcEvents, ipcServices } from '../lib/ipc'
 import { saveSettingAtom, settingsAtom } from '../store/settings'
+import { updateAvailableAtom, updateReadyAtom } from '../store/update'

 interface AboutResource {
  icon: LucideIcon
@@ -45,6 +41,8 @@ type LatestVersionState =
 export function About() {
  const { t } = useTranslation()
  const [settings, _setSettings] = useAtom(settingsAtom)
+  const [updateReady] = useAtom(updateReadyAtom)
+  const setUpdateAvailable = useSetAtom(updateAvailableAtom)
  const [appVersion, setAppVersion] = useState<string>('—')
  const [latestVersionState, setLatestVersionState] = useState<LatestVersionState>(null)
  const [updateDownloadProgress, setUpdateDownloadProgress] = useState<number | null>(null)
@@ -88,6 +86,10 @@ export function About() {
        status: 'available',
        version: versionLabel
      })
+      setUpdateAvailable({
+        available: true,
+        version: versionLabel
+      })
      // Reset download progress when new update is available
      setUpdateDownloadProgress(0)
    }
@@ -113,7 +115,7 @@ export function About() {
      ipcEvents.removeListener('update:download-progress', handleUpdateDownloadProgress)
      ipcEvents.removeListener('update:downloaded', handleUpdateDownloaded)
    }
-  }, [t])
+  }, [setUpdateAvailable, t])

  const handleSettingChange = async (
    key: keyof typeof settings,
@@ -135,6 +137,10 @@ export function About() {
            status: 'available',
            version: result.version ?? ''
          })
+          setUpdateAvailable({
+            available: true,
+            version: result.version
+          })
        } else if (result.error) {
          toast.error(t('about.notifications.updateError', { error: result.error }))
          setLatestVersionState({
@@ -147,6 +153,10 @@ export function About() {
            status: 'uptodate',
            version: result.version ?? appVersion
          })
+          setUpdateAvailable({
+            available: false,
+            version: undefined
+          })
        }
      } catch (error) {
        console.error('Failed to check for updates:', error)
@@ -159,6 +169,10 @@ export function About() {
    openShareUrl('https://vidbee.org/download/')
  }

+  const handleRestartToUpdate = () => {
+    void ipcServices.update.quitAndInstall()
+  }
+
  const handleCheckForUpdates = async () => {
    try {
      toast.info(t('about.notifications.checkingUpdates'))
@@ -170,6 +184,10 @@ export function About() {
          status: 'available',
          version: result.version ?? ''
        })
+        setUpdateAvailable({
+          available: true,
+          version: result.version
+        })
      } else if (result.error) {
        toast.error(t('about.notifications.updateError', { error: result.error }))
        setLatestVersionState({
@@ -182,6 +200,10 @@ export function About() {
          status: 'uptodate',
          version: result.version ?? appVersion
        })
+        setUpdateAvailable({
+          available: false,
+          version: undefined
+        })
      }
    } catch (error) {
      console.error('Failed to check for updates:', error)
@@ -202,13 +224,13 @@ export function About() {
    }
  }, [t])

-  const openShareUrl = (url: string) => {
+  const openShareUrl = useCallback((url: string) => {
    if (typeof window === 'undefined') {
      return
    }

    window.open(url, '_blank', 'noopener,noreferrer')
-  }
+  }, [])

  const handleShareTwitter = () => {
    openShareUrl(shareLinks.twitter)
@@ -243,6 +265,39 @@ export function About() {
        : 'text-muted-foreground'
  const latestVersionStatusText = latestVersionStatusKey ? t(latestVersionStatusKey) : null

+  const handleXFeedback = useCallback(() => {
+    const versionText = appVersion !== '—' ? ` VidBee v${appVersion}` : ' VidBee'
+    const tweetText = encodeURIComponent(`@nexmoex${versionText}`)
+    openShareUrl(`https://x.com/intent/tweet?text=${tweetText}`)
+  }, [appVersion, openShareUrl])
+
+  const feedbackResources = useMemo<AboutResource[]>(
+    () => [
+      {
+        icon: Github,
+        label: t('about.resources.githubIssues'),
+        description: t('about.resources.githubIssuesDescription'),
+        actionLabel: t('about.actions.feedback'),
+        href: 'https://github.com/nexmoe/VidBee/issues/new/choose'
+      },
+      {
+        icon: Twitter,
+        label: t('about.resources.xFeedback'),
+        description: t('about.resources.xFeedbackDescription'),
+        actionLabel: t('about.actions.feedback'),
+        onClick: handleXFeedback
+      },
+      {
+        icon: MessageCircle,
+        label: t('about.resources.discord'),
+        description: t('about.resources.discordDescription'),
+        actionLabel: t('about.actions.visit'),
+        href: 'https://discord.gg/uBqXV6QPdm'
+      }
+    ],
+    [t, handleXFeedback]
+  )
+
  const aboutResources = useMemo<AboutResource[]>(
    () => [
      {
@@ -258,20 +313,6 @@ export function About() {
        description: t('about.resources.changelogDescription'),
        actionLabel: t('about.actions.view'),
        href: 'https://github.com/nexmoe/VidBee/releases'
-      },
-      {
-        icon: Github,
-        label: t('about.resources.githubIssues'),
-        description: t('about.resources.githubIssuesDescription'),
-        actionLabel: t('about.actions.feedback'),
-        href: 'https://github.com/nexmoe/VidBee/issues/new/choose'
-      },
-      {
-        icon: MessageCircle,
-        label: t('about.resources.discord'),
-        description: t('about.resources.discordDescription'),
-        actionLabel: t('about.actions.visit'),
-        href: 'https://discord.gg/uBqXV6QPdm'
      }
    ],
    [t]
@@ -282,69 +323,87 @@ export function About() {
      <div className="container mx-auto max-w-5xl p-6 space-y-6">
        <Card>
          <CardContent className="pt-6">
-            <div className="flex flex-col gap-4 md:flex-row md:items-center md:justify-between">
+            <div className="flex flex-col gap-4">
              <div className="flex items-center gap-4">
-                <img src="./app-icon.png" alt="VidBee" className="h-16 w-16 rounded-2xl" />
-                <div className="space-y-2">
-                  <div>
-                    <h2 className="text-2xl font-semibold leading-tight">{t('about.appName')}</h2>
-                    <p className="text-sm text-muted-foreground">{t('about.description')}</p>
-                  </div>
-                  <div className="flex flex-wrap items-center gap-2">
-                    <Badge variant="secondary">
-                      {t('about.versionLabel', { version: appVersion })}
-                    </Badge>
-                    {latestVersionState ? (
-                      <div className="flex flex-wrap items-center gap-2">
-                        {latestVersionBadgeText ? (
-                          <Badge variant="outline">{latestVersionBadgeText}</Badge>
-                        ) : null}
-                        {latestVersionStatusText ? (
-                          <span className={`text-sm ${latestVersionStatusClass}`}>
-                            {latestVersionStatusText}
-                          </span>
-                        ) : null}
-                      </div>
-                    ) : null}
-                  </div>
-                  {updateDownloadProgress !== null && (
-                    <div className="space-y-2 w-full">
-                      <div className="flex items-center justify-between gap-2">
-                        <span className="text-sm text-muted-foreground">
-                          {t('about.downloadingUpdate')}
-                        </span>
-                        <span className="text-sm font-medium">
-                          {updateDownloadProgress.toFixed(1)}%
-                        </span>
-                      </div>
-                      <Progress value={updateDownloadProgress} className="h-2" />
+                <img src="./app-icon.png" alt="VidBee" className="h-18 w-18 rounded-2xl" />
+                <div className="flex-1 space-y-2">
+                  <div className="flex items-center justify-between gap-4">
+                    <div className="flex items-center gap-3">
+                      <h2 className="text-2xl font-semibold leading-tight">{t('about.appName')}</h2>
+                      <Badge variant="secondary">
+                        {t('about.versionLabel', { version: appVersion })}
+                      </Badge>
+                      {latestVersionState ? (
+                        <div className="flex flex-wrap items-center gap-2">
+                          {latestVersionBadgeText ? (
+                            <Badge variant="outline">{latestVersionBadgeText}</Badge>
+                          ) : null}
+                          {latestVersionStatusText ? (
+                            <span className={`text-sm ${latestVersionStatusClass}`}>
+                              {latestVersionStatusText}
+                            </span>
+                          ) : null}
+                        </div>
+                      ) : null}
                    </div>
-                  )}
+                    <div className="flex flex-wrap items-center gap-2">
+                      <Button variant="outline" size="sm" asChild>
+                        <a
+                          href="https://github.com/nexmoe/vidbee"
+                          target="_blank"
+                          rel="noreferrer"
+                          aria-label={t('about.actions.openRepo')}
+                        >
+                          <Github className="h-3.5 w-3.5" />
+                        </a>
+                      </Button>
+                      {updateReady.ready ? (
+                        <Button
+                          onClick={handleRestartToUpdate}
+                          variant="default"
+                          size="sm"
+                          className="gap-2"
+                        >
+                          <RefreshCw className="h-3.5 w-3.5" />
+                          {t('about.notifications.restartNowAction')}
+                        </Button>
+                      ) : null}
+                      {latestVersionState?.status === 'available' ? (
+                        <Button
+                          onClick={handleGoToDownload}
+                          variant="default"
+                          size="sm"
+                          className="gap-2"
+                        >
+                          <Download className="h-3.5 w-3.5" />
+                          {t('about.actions.goToDownload')}
+                        </Button>
+                      ) : null}
+                      <Button onClick={handleCheckForUpdates} size="sm" className="gap-2">
+                        <RefreshCw className="h-3.5 w-3.5" />
+                        {t('about.actions.checkUpdates')}
+                      </Button>
+                    </div>
+                  </div>
+                  <p className="text-sm text-muted-foreground">{t('about.description')}</p>
                </div>
              </div>
-              <div className="flex items-center gap-2">
-                <Button variant="outline" size="icon" asChild>
-                  <a
-                    href="https://github.com/nexmoe/vidbee"
-                    target="_blank"
-                    rel="noreferrer"
-                    aria-label={t('about.actions.openRepo')}
-                  >
-                    <Github className="h-4 w-4" />
-                  </a>
-                </Button>
-                {latestVersionState?.status === 'available' ? (
-                  <Button onClick={handleGoToDownload} variant="default" className="gap-2">
-                    <Download className="h-4 w-4" />
-                    {t('about.actions.goToDownload')}
-                  </Button>
-                ) : null}
-                <Button onClick={handleCheckForUpdates} className="gap-2">
-                  <RefreshCw className="h-4 w-4" />
-                  {t('about.actions.checkUpdates')}
-                </Button>
-              </div>
            </div>
+            {updateDownloadProgress !== null && (
+              <div className="flex flex-col gap-3 pt-4">
+                <div className="space-y-2 w-full">
+                  <div className="flex items-center justify-between gap-2">
+                    <span className="text-sm text-muted-foreground">
+                      {t('about.downloadingUpdate')}
+                    </span>
+                    <span className="text-sm font-medium">
+                      {updateDownloadProgress.toFixed(1)}%
+                    </span>
+                  </div>
+                  <Progress value={updateDownloadProgress} className="h-2" />
+                </div>
+              </div>
+            )}
            <div className="flex items-center justify-between gap-4 pt-6">
              <div className="space-y-1">
                <p className="font-medium leading-none">{t('about.autoUpdateTitle')}</p>
@@ -361,7 +420,6 @@ export function About() {
        <Card>
          <CardHeader>
            <CardTitle>{t('about.shareTitle')}</CardTitle>
-            <CardDescription>{t('about.shareDescription')}</CardDescription>
          </CardHeader>
          <CardContent className="space-y-4">
            <div className="flex flex-col gap-4 md:flex-row md:items-center md:justify-between">
@@ -408,6 +466,45 @@ export function About() {
        <Card>
          <CardContent className="p-0">
            <div className="flex flex-col divide-y">
+              {/* Feedback section - merged into one row */}
+              <div className="flex items-center justify-between gap-4 px-6 py-4">
+                <div className="flex items-center gap-4">
+                  <div className="flex h-10 w-10 items-center justify-center rounded-full bg-muted/60">
+                    <MessageSquare className="h-5 w-5 text-muted-foreground" />
+                  </div>
+                  <div className="space-y-1">
+                    <p className="font-medium leading-none">{t('about.resources.feedback')}</p>
+                    <p className="text-sm text-muted-foreground">
+                      {t('about.resources.feedbackDescription')}
+                    </p>
+                  </div>
+                </div>
+                <div className="flex flex-wrap gap-2">
+                  {feedbackResources.map((resource) => {
+                    const Icon = resource.icon
+                    return resource.href ? (
+                      <Button key={resource.label} variant="outline" size="sm" asChild>
+                        <a href={resource.href} target="_blank" rel="noreferrer" className="gap-2">
+                          <Icon className="h-4 w-4" />
+                          {resource.label}
+                        </a>
+                      </Button>
+                    ) : (
+                      <Button
+                        key={resource.label}
+                        variant="outline"
+                        size="sm"
+                        onClick={resource.onClick}
+                        className="gap-2"
+                      >
+                        <Icon className="h-4 w-4" />
+                        {resource.label}
+                      </Button>
+                    )
+                  })}
+                </div>
+              </div>
+              {/* Other resources */}
              {aboutResources.map((resource) => {
                const Icon = resource.icon
                return (
--- a/src/renderer/src/pages/Settings.tsx
+++ b/src/renderer/src/pages/Settings.tsx
@@ -18,42 +18,50 @@ import {
 } from '@renderer/components/ui/select'
 import { Switch } from '@renderer/components/ui/switch'
 import { Tabs, TabsContent, TabsList, TabsTrigger } from '@renderer/components/ui/tabs'
+import { type LanguageCode, languageList, normalizeLanguageCode } from '@shared/languages'
 import type { OneClickQualityPreset } from '@shared/types'
 import { useAtom, useSetAtom } from 'jotai'
 import { useTheme } from 'next-themes'
 import { useEffect, useState } from 'react'
 import { useTranslation } from 'react-i18next'
 import { toast } from 'sonner'
+import { ipcServices } from '../lib/ipc'
+import { logger } from '../lib/logger'
 import { loadSettingsAtom, saveSettingAtom, settingsAtom } from '../store/settings'

-const clampSubscriptionInterval = (value: string) => {
-  const parsed = Number.parseInt(value, 10)
-  if (Number.isNaN(parsed)) {
-    return 3
-  }
-  return Math.min(24, Math.max(1, parsed))
-}
-
 export function Settings() {
-  const { t } = useTranslation()
+  const { t, i18n: i18nInstance } = useTranslation()
  const { theme, setTheme } = useTheme()
  const [settings, _setSettings] = useAtom(settingsAtom)
  const loadSettings = useSetAtom(loadSettingsAtom)
  const saveSetting = useSetAtom(saveSettingAtom)
  const [platform, setPlatform] = useState<string>('')
+  const [activeTab, setActiveTab] = useState<string>('general')

  useEffect(() => {
-    loadSettings()
+    logger.info('[Settings] Component mounted, loading settings...')
+    try {
+      loadSettings()
+      // Note: settings will be logged in the next useEffect after it's loaded
+    } catch (error) {
+      logger.error('[Settings] Failed to load settings:', error)
+    }
  }, [loadSettings])

+  useEffect(() => {
+    logger.info('[Settings] Settings state updated', {
+      settingsKeys: Object.keys(settings),
+      settingsValues: settings
+    })
+  }, [settings])
+
  useEffect(() => {
    const fetchPlatform = async () => {
      try {
-        const { ipcServices } = await import('../lib/ipc')
        const platformInfo = await ipcServices.app.getPlatform()
        setPlatform(platformInfo)
      } catch (error) {
-        console.error('Failed to get platform info:', error)
+        logger.error('Failed to get platform info:', error)
      }
    }

@@ -66,57 +74,60 @@ export function Settings() {
    key: keyof typeof settings,
    value: (typeof settings)[keyof typeof settings]
  ) => {
-    await saveSetting({ key, value })
-    toast.success(t('notifications.settingsSaved'))
+    try {
+      logger.info('[Settings] Changing setting', { key, value, currentValue: settings[key] })
+      await saveSetting({ key, value })
+      toast.success(t('notifications.settingsSaved'))
+      logger.info('[Settings] Setting changed successfully', { key, value })
+    } catch (error) {
+      logger.error('[Settings] Failed to change setting', { key, value, error })
+      toast.error(t('settings.saveError') || 'Failed to save setting')
+    }
  }

  const handleSelectPath = async () => {
    try {
-      const { ipcServices } = await import('../lib/ipc')
      const path = await ipcServices.fs.selectDirectory()
      if (path) {
        await handleSettingChange('downloadPath', path)
      }
    } catch (error) {
-      console.error('Failed to select directory:', error)
+      logger.error('Failed to select directory:', error)
      toast.error(t('settings.directorySelectError'))
    }
  }

  const handleSelectConfigFile = async () => {
    try {
-      const { ipcServices } = await import('../lib/ipc')
      const path = await ipcServices.fs.selectFile()
      if (path) {
        await handleSettingChange('configPath', path)
      }
    } catch (error) {
-      console.error('Failed to select file:', error)
+      logger.error('Failed to select file:', error)
      toast.error(t('settings.fileSelectError'))
    }
  }

  const handleSelectCookiesFile = async () => {
    try {
-      const { ipcServices } = await import('../lib/ipc')
      const path = await ipcServices.fs.selectFile()
      if (path) {
        await handleSettingChange('cookiesPath', path)
      }
    } catch (error) {
-      console.error('Failed to select cookies file:', error)
+      logger.error('Failed to select cookies file:', error)
      toast.error(t('settings.fileSelectError'))
    }
  }

  const handleOpenCookiesFaq = async () => {
    try {
-      const { ipcServices } = await import('../lib/ipc')
      await ipcServices.fs.openExternal(
        'https://github.com/yt-dlp/yt-dlp/wiki/FAQ#how-do-i-pass-cookies-to-yt-dlp'
      )
    } catch (error) {
-      console.error('Failed to open cookies FAQ:', error)
+      logger.error('Failed to open cookies FAQ:', error)
      toast.error(t('settings.openLinkError'))
    }
  }
@@ -131,6 +142,21 @@ export function Settings() {
    await handleSettingChange('theme', value)
  }

+  const languageOptions = languageList
+  const activeLanguageCode = normalizeLanguageCode(i18nInstance.language)
+  const currentLanguage =
+    languageOptions.find((option) => option.value === activeLanguageCode) ?? languageOptions[0]
+
+  const handleLanguageChange = async (value: LanguageCode) => {
+    if (activeLanguageCode === value) {
+      return
+    }
+
+    await saveSetting({ key: 'language', value })
+    await i18nInstance.changeLanguage(value)
+    toast.success(t('notifications.settingsSaved'))
+  }
+
  return (
    <div className="h-full bg-background">
      <div className="container mx-auto max-w-4xl p-6 space-y-6">
@@ -139,7 +165,29 @@ export function Settings() {
          <p className="text-muted-foreground">{t('settings.description')}</p>
        </div>

-        <Tabs defaultValue="general">
+        <Tabs
+          value={activeTab}
+          onValueChange={(value) => {
+            logger.info('[Settings] Tab changed', { from: activeTab, to: value })
+            setActiveTab(value)
+            try {
+              if (value === 'advanced') {
+                logger.info('[Settings] Entering advanced tab', {
+                  settings: settings,
+                  settingsKeys: Object.keys(settings),
+                  maxConcurrentDownloads: settings.maxConcurrentDownloads,
+                  browserForCookies: settings.browserForCookies,
+                  cookiesPath: settings.cookiesPath,
+                  proxy: settings.proxy,
+                  configPath: settings.configPath,
+                  enableAnalytics: settings.enableAnalytics
+                })
+              }
+            } catch (error) {
+              logger.error('[Settings] Error when entering advanced tab:', error)
+            }
+          }}
+        >
          <TabsList className="grid w-full grid-cols-2">
            <TabsTrigger value="general">{t('settings.general')}</TabsTrigger>
            <TabsTrigger value="advanced">{t('settings.advanced')}</TabsTrigger>
@@ -185,6 +233,53 @@ export function Settings() {
                  </Select>
                </ItemActions>
              </Item>
+
+              <ItemSeparator />
+
+              <Item variant="muted">
+                <ItemContent>
+                  <ItemTitle>{t('settings.language')}</ItemTitle>
+                  <ItemDescription>{t('settings.languageDescription')}</ItemDescription>
+                </ItemContent>
+                <ItemActions>
+                  <Select
+                    value={currentLanguage.value}
+                    onValueChange={(value) => void handleLanguageChange(value as LanguageCode)}
+                  >
+                    <SelectTrigger className="w-48">
+                      <SelectValue placeholder={currentLanguage.name}>
+                        <div className="flex items-center gap-2">
+                          <span
+                            className={`${currentLanguage.flag} rounded-xs text-base`}
+                            aria-hidden="true"
+                          />
+                          <span lang={currentLanguage.hreflang}>{currentLanguage.name}</span>
+                        </div>
+                      </SelectValue>
+                    </SelectTrigger>
+                    <SelectContent>
+                      {languageOptions.map((option) => {
+                        const isActive = option.value === currentLanguage.value
+                        return (
+                          <SelectItem
+                            key={option.value}
+                            value={option.value}
+                            className={isActive ? 'font-semibold bg-muted' : undefined}
+                          >
+                            <div className="flex items-center gap-2">
+                              <span
+                                className={`${option.flag} rounded-xs text-base`}
+                                aria-hidden="true"
+                              />
+                              <span lang={option.hreflang}>{option.name}</span>
+                            </div>
+                          </SelectItem>
+                        )
+                      })}
+                    </SelectContent>
+                  </Select>
+                </ItemActions>
+              </Item>
            </ItemGroup>

            <ItemGroup>
@@ -316,41 +411,21 @@ export function Settings() {
                </ItemContent>
                <ItemActions>
                  <Switch
-                    checked={settings.showMoreFormats}
-                    onCheckedChange={(value) => handleSettingChange('showMoreFormats', value)}
+                    checked={settings.showMoreFormats ?? false}
+                    onCheckedChange={(value) => {
+                      try {
+                        logger.info('[Settings] Toggling showMoreFormats', { value })
+                        handleSettingChange('showMoreFormats', value)
+                      } catch (error) {
+                        logger.error('[Settings] Error toggling showMoreFormats:', error)
+                      }
+                    }}
                  />
                </ItemActions>
              </Item>
            </ItemGroup>

            <ItemGroup>
-              <Item variant="muted">
-                <ItemContent>
-                  <ItemTitle>{t('subscriptions.defaults.checkInterval')}</ItemTitle>
-                  <ItemDescription>
-                    {t('settings.subscriptionDefaults.intervalDescription')}
-                  </ItemDescription>
-                </ItemContent>
-                <ItemActions>
-                  <Input
-                    type="number"
-                    min={1}
-                    max={24}
-                    defaultValue={settings.subscriptionCheckIntervalHours}
-                    key={`subscription-interval-${settings.subscriptionCheckIntervalHours}`}
-                    onBlur={(event) =>
-                      void handleSettingChange(
-                        'subscriptionCheckIntervalHours',
-                        clampSubscriptionInterval(event.target.value)
-                      )
-                    }
-                    className="w-24"
-                  />
-                </ItemActions>
-              </Item>
-
-              <ItemSeparator />
-
              <Item variant="muted">
                <ItemContent>
                  <ItemTitle>{t('settings.maxConcurrentDownloads')}</ItemTitle>
@@ -359,23 +434,55 @@ export function Settings() {
                  </ItemDescription>
                </ItemContent>
                <ItemActions>
-                  <Select
-                    value={settings.maxConcurrentDownloads.toString()}
-                    onValueChange={(value) =>
-                      handleSettingChange('maxConcurrentDownloads', Number(value))
+                  {(() => {
+                    try {
+                      const maxConcurrent = settings.maxConcurrentDownloads ?? 5
+                      const maxConcurrentStr = maxConcurrent.toString()
+                      logger.info('[Settings] Rendering max concurrent downloads select', {
+                        maxConcurrent,
+                        maxConcurrentStr,
+                        type: typeof maxConcurrent
+                      })
+                      return (
+                        <Select
+                          value={maxConcurrentStr}
+                          onValueChange={(value) => {
+                            try {
+                              const numValue = Number(value)
+                              logger.info('[Settings] Max concurrent downloads changed', {
+                                oldValue: maxConcurrent,
+                                newValue: numValue,
+                                stringValue: value
+                              })
+                              handleSettingChange('maxConcurrentDownloads', numValue)
+                            } catch (error) {
+                              logger.error(
+                                '[Settings] Error changing max concurrent downloads:',
+                                error
+                              )
+                            }
+                          }}
+                        >
+                          <SelectTrigger className="w-20">
+                            <SelectValue />
+                          </SelectTrigger>
+                          <SelectContent>
+                            {[1, 2, 3, 4, 5, 6, 7, 8, 9, 10].map((num) => (
+                              <SelectItem key={num} value={num.toString()}>
+                                {num}
+                              </SelectItem>
+                            ))}
+                          </SelectContent>
+                        </Select>
+                      )
+                    } catch (error) {
+                      logger.error(
+                        '[Settings] Error rendering max concurrent downloads select:',
+                        error
+                      )
+                      return <div>Error loading max concurrent downloads setting</div>
                    }
-                  >
-                    <SelectTrigger className="w-20">
-                      <SelectValue />
-                    </SelectTrigger>
-                    <SelectContent>
-                      {[1, 2, 3, 4, 5, 6, 7, 8, 9, 10].map((num) => (
-                        <SelectItem key={num} value={num.toString()}>
-                          {num}
-                        </SelectItem>
-                      ))}
-                    </SelectContent>
-                  </Select>
+                  })()}
                </ItemActions>
              </Item>

@@ -387,12 +494,33 @@ export function Settings() {
                  <ItemDescription>{t('settings.proxyDescription')}</ItemDescription>
                </ItemContent>
                <ItemActions>
-                  <Input
-                    placeholder={t('settings.proxyPlaceholder')}
-                    value={settings.proxy}
-                    onChange={(e) => handleSettingChange('proxy', e.target.value)}
-                    className="w-64"
-                  />
+                  {(() => {
+                    try {
+                      const proxyValue = settings.proxy ?? ''
+                      logger.info('[Settings] Rendering proxy input', { proxyValue })
+                      return (
+                        <Input
+                          placeholder={t('settings.proxyPlaceholder')}
+                          value={proxyValue}
+                          onChange={(e) => {
+                            try {
+                              logger.info('[Settings] Proxy value changed', {
+                                oldValue: proxyValue,
+                                newValue: e.target.value
+                              })
+                              handleSettingChange('proxy', e.target.value)
+                            } catch (error) {
+                              logger.error('[Settings] Error changing proxy:', error)
+                            }
+                          }}
+                          className="w-64"
+                        />
+                      )
+                    } catch (error) {
+                      logger.error('[Settings] Error rendering proxy input:', error)
+                      return <div>Error loading proxy setting</div>
+                    }
+                  })()}
                </ItemActions>
              </Item>

@@ -404,17 +532,37 @@ export function Settings() {
                  <ItemDescription>{t('settings.configFileDescription')}</ItemDescription>
                </ItemContent>
                <ItemActions>
-                  <div className="flex gap-2 w-full max-w-md">
-                    <Input value={settings.configPath} readOnly className="flex-1" />
-                    <Button onClick={handleSelectConfigFile}>{t('settings.selectPath')}</Button>
-                    <Button
-                      variant="secondary"
-                      onClick={() => void handleSettingChange('configPath', '')}
-                      disabled={!settings.configPath}
-                    >
-                      {t('settings.clearConfigFile')}
-                    </Button>
-                  </div>
+                  {(() => {
+                    try {
+                      const configPathValue = settings.configPath ?? ''
+                      logger.info('[Settings] Rendering config file input', { configPathValue })
+                      return (
+                        <div className="flex gap-2 w-full max-w-md">
+                          <Input value={configPathValue} readOnly className="flex-1" />
+                          <Button onClick={handleSelectConfigFile}>
+                            {t('settings.selectPath')}
+                          </Button>
+                          <Button
+                            variant="secondary"
+                            onClick={() => {
+                              try {
+                                logger.info('[Settings] Clearing config path')
+                                void handleSettingChange('configPath', '')
+                              } catch (error) {
+                                logger.error('[Settings] Error clearing config path:', error)
+                              }
+                            }}
+                            disabled={!configPathValue}
+                          >
+                            {t('settings.clearConfigFile')}
+                          </Button>
+                        </div>
+                      )
+                    } catch (error) {
+                      logger.error('[Settings] Error rendering config file input:', error)
+                      return <div>Error loading config file setting</div>
+                    }
+                  })()}
                </ItemActions>
              </Item>
            </ItemGroup>
@@ -426,27 +574,58 @@ export function Settings() {
                  <ItemDescription>{t('settings.browserForCookiesDescription')}</ItemDescription>
                </ItemContent>
                <ItemActions>
-                  <Select
-                    value={settings.browserForCookies}
-                    onValueChange={(value) => handleSettingChange('browserForCookies', value)}
-                  >
-                    <SelectTrigger className="w-32">
-                      <SelectValue />
-                    </SelectTrigger>
-                    <SelectContent>
-                      <SelectItem value="none">{t('settings.none')}</SelectItem>
-                      <SelectItem value="chrome">{t('settings.browserOptions.chrome')}</SelectItem>
-                      <SelectItem value="chromium">
-                        {t('settings.browserOptions.chromium')}
-                      </SelectItem>
-                      <SelectItem value="firefox">
-                        {t('settings.browserOptions.firefox')}
-                      </SelectItem>
-                      <SelectItem value="edge">{t('settings.browserOptions.edge')}</SelectItem>
-                      <SelectItem value="safari">{t('settings.browserOptions.safari')}</SelectItem>
-                      <SelectItem value="brave">{t('settings.browserOptions.brave')}</SelectItem>
-                    </SelectContent>
-                  </Select>
+                  {(() => {
+                    try {
+                      const browserValue = settings.browserForCookies ?? 'none'
+                      logger.info('[Settings] Rendering browser for cookies select', {
+                        browserValue
+                      })
+                      return (
+                        <Select
+                          value={browserValue}
+                          onValueChange={(value) => {
+                            try {
+                              logger.info('[Settings] Browser for cookies changed', {
+                                oldValue: browserValue,
+                                newValue: value
+                              })
+                              handleSettingChange('browserForCookies', value)
+                            } catch (error) {
+                              logger.error('[Settings] Error changing browser for cookies:', error)
+                            }
+                          }}
+                        >
+                          <SelectTrigger className="w-32">
+                            <SelectValue />
+                          </SelectTrigger>
+                          <SelectContent>
+                            <SelectItem value="none">{t('settings.none')}</SelectItem>
+                            <SelectItem value="chrome">
+                              {t('settings.browserOptions.chrome')}
+                            </SelectItem>
+                            <SelectItem value="chromium">
+                              {t('settings.browserOptions.chromium')}
+                            </SelectItem>
+                            <SelectItem value="firefox">
+                              {t('settings.browserOptions.firefox')}
+                            </SelectItem>
+                            <SelectItem value="edge">
+                              {t('settings.browserOptions.edge')}
+                            </SelectItem>
+                            <SelectItem value="safari">
+                              {t('settings.browserOptions.safari')}
+                            </SelectItem>
+                            <SelectItem value="brave">
+                              {t('settings.browserOptions.brave')}
+                            </SelectItem>
+                          </SelectContent>
+                        </Select>
+                      )
+                    } catch (error) {
+                      logger.error('[Settings] Error rendering browser for cookies select:', error)
+                      return <div>Error loading browser for cookies setting</div>
+                    }
+                  })()}
                </ItemActions>
              </Item>

@@ -458,17 +637,37 @@ export function Settings() {
                  <ItemDescription>{t('settings.cookiesFileDescription')}</ItemDescription>
                </ItemContent>
                <ItemActions>
-                  <div className="flex gap-2 w-full max-w-md">
-                    <Input value={settings.cookiesPath ?? ''} readOnly className="flex-1" />
-                    <Button onClick={handleSelectCookiesFile}>{t('settings.selectPath')}</Button>
-                    <Button
-                      variant="secondary"
-                      onClick={() => void handleSettingChange('cookiesPath', '')}
-                      disabled={!settings.cookiesPath}
-                    >
-                      {t('settings.clearCookiesFile')}
-                    </Button>
-                  </div>
+                  {(() => {
+                    try {
+                      const cookiesPathValue = settings.cookiesPath ?? ''
+                      logger.info('[Settings] Rendering cookies file input', { cookiesPathValue })
+                      return (
+                        <div className="flex gap-2 w-full max-w-md">
+                          <Input value={cookiesPathValue} readOnly className="flex-1" />
+                          <Button onClick={handleSelectCookiesFile}>
+                            {t('settings.selectPath')}
+                          </Button>
+                          <Button
+                            variant="secondary"
+                            onClick={() => {
+                              try {
+                                logger.info('[Settings] Clearing cookies path')
+                                void handleSettingChange('cookiesPath', '')
+                              } catch (error) {
+                                logger.error('[Settings] Error clearing cookies path:', error)
+                              }
+                            }}
+                            disabled={!cookiesPathValue}
+                          >
+                            {t('settings.clearCookiesFile')}
+                          </Button>
+                        </div>
+                      )
+                    } catch (error) {
+                      logger.error('[Settings] Error rendering cookies file input:', error)
+                      return <div>Error loading cookies file setting</div>
+                    }
+                  })()}
                </ItemActions>
              </Item>

@@ -477,12 +676,10 @@ export function Settings() {
              <Item variant="muted">
                <ItemContent>
                  <ItemTitle>{t('settings.cookiesHelpTitle')}</ItemTitle>
-                  <ItemDescription>
-                    <ul className="list-disc list-inside space-y-1">
-                      <li>{t('settings.cookiesHelpBrowser')}</li>
-                      <li>{t('settings.cookiesHelpFile')}</li>
-                    </ul>
-                  </ItemDescription>
+                  <ul className="list-disc list-inside space-y-1 text-muted-foreground text-sm leading-normal">
+                    <li>{t('settings.cookiesHelpBrowser')}</li>
+                    <li>{t('settings.cookiesHelpFile')}</li>
+                  </ul>
                </ItemContent>
                <ItemActions>
                  <Button variant="link" className="px-0" onClick={handleOpenCookiesFaq}>
@@ -499,10 +696,33 @@ export function Settings() {
                  <ItemDescription>{t('settings.enableAnalyticsDescription')}</ItemDescription>
                </ItemContent>
                <ItemActions>
-                  <Switch
-                    checked={settings.enableAnalytics}
-                    onCheckedChange={(value) => handleSettingChange('enableAnalytics', value)}
-                  />
+                  {(() => {
+                    try {
+                      const analyticsValue = settings.enableAnalytics ?? true
+                      logger.info('[Settings] Rendering enable analytics switch', {
+                        analyticsValue
+                      })
+                      return (
+                        <Switch
+                          checked={analyticsValue}
+                          onCheckedChange={(value) => {
+                            try {
+                              logger.info('[Settings] Enable analytics changed', {
+                                oldValue: analyticsValue,
+                                newValue: value
+                              })
+                              handleSettingChange('enableAnalytics', value)
+                            } catch (error) {
+                              logger.error('[Settings] Error changing enable analytics:', error)
+                            }
+                          }}
+                        />
+                      )
+                    } catch (error) {
+                      logger.error('[Settings] Error rendering enable analytics switch:', error)
+                      return <div>Error loading enable analytics setting</div>
+                    }
+                  })()}
                </ItemActions>
              </Item>
            </ItemGroup>
--- a/src/renderer/src/store/update.ts
+++ b/src/renderer/src/store/update.ts
@@ -0,0 +1,21 @@
+import { atom } from 'jotai'
+
+type UpdateReadyState = {
+  ready: boolean
+  version?: string
+}
+
+type UpdateAvailableState = {
+  available: boolean
+  version?: string
+}
+
+export const updateReadyAtom = atom<UpdateReadyState>({
+  ready: false,
+  version: undefined
+})
+
+export const updateAvailableAtom = atom<UpdateAvailableState>({
+  available: false,
+  version: undefined
+})
--- a/src/shared/types/index.ts
+++ b/src/shared/types/index.ts
@@ -270,7 +270,6 @@ export interface AppSettings {
  launchAtLogin: boolean
  autoUpdate: boolean
  subscriptionOnlyLatestDefault: boolean
-  subscriptionCheckIntervalHours: number
  enableAnalytics: boolean
 }

@@ -295,6 +294,5 @@ export const defaultSettings: AppSettings = {
  launchAtLogin: false,
  autoUpdate: true,
  subscriptionOnlyLatestDefault: true,
-  subscriptionCheckIntervalHours: 3,
  enableAnalytics: true
 }
Author	SHA1	Message	Date
Nexmoe	e332ec4ddc	chore: release v1.1.5	2026-01-10 19:18:55 +08:00
Nexmoe	3b74712f57	fix(subscription): improve cover image selection (#73 ) * fix(subscriptions): improve rss cover fallback * fix(subscriptions): match img src first	2026-01-10 19:18:03 +08:00
Nexmoe	475e4127c2	fix(remote-image): add load timeout (#72 )	2026-01-10 18:39:00 +08:00
Nexmoe	3041307aa2	fix: Advanced settings tab broken (#71 )	2026-01-10 18:30:18 +08:00
Nexmoe	e2ab8dce60	chore: release v1.1.4	2026-01-09 21:39:01 +08:00
Nexmoe	c1806e5321	fix(main): hide window on autostart (#68 )	2026-01-09 21:03:25 +08:00
Nexmoe	92494966c6	fix(settings): merge defaults for getAll (#66 )	2026-01-09 20:53:08 +08:00
Nexmoe	f04680b8c2	chore: release v1.1.3	2026-01-02 16:17:42 +08:00
Nexmoe	a5b94411fe	fix(download): handle empty format selections (#64 )	2026-01-02 16:16:04 +08:00
Nexmoe	71ae4a4425	fix(download): add format fallback selectors (#63 )	2026-01-01 14:41:59 +08:00
Nexmoe	e8413aefae	feat(ui): show update indicator on About (#58 ) * feat(ui): add update indicator for about * fix(ci): remove unused import * fix(ci): retry binary downloads	2025-12-26 16:46:55 +08:00