feat(downloads): add adaptive mirror reliability

src/bindings/EnqueueItem.ts

@@ -1,4 +1,4 @@
 // This file was generated by [ts-rs](https://github.com/Aleph-Alpha/ts-rs). Do not edit this file manually.
 import type { TorrentWebSeed } from "./TorrentWebSeed";
 
-export type EnqueueItem = { id: string, queue_id: string, url: string, destination: string, filename: string, connections: number | null, speed_limit: string | null, username: string | null, password: string | null, sftp_host_key_md?: string, headers: string | null, checksum: string | null, cookies: string | null, mirrors: string | null, user_agent: string | null, max_tries: number | null, proxy: string | null, format_selector: string | null, cookie_source: string | null, is_media: boolean | null, is_torrent?: boolean, torrent_path?: string, torrent_file_indices?: Array<number>, torrent_info_hash?: string, torrent_seed_time?: number, torrent_seed_ratio?: number, torrent_seed_remaining?: number, torrent_web_seeds?: Array<TorrentWebSeed>, torrent_upload_limit?: string, torrent_max_peers?: number, torrent_peer_speed_limit?: string, torrent_check_integrity?: boolean, torrent_trackers?: string, torrent_exclude_trackers?: string, torrent_tracker_connect_timeout?: number, torrent_tracker_timeout?: number, torrent_tracker_interval?: number, torrent_stop_timeout?: number, torrent_prioritize_piece?: string, torrent_remove_unselected_file?: boolean, torrent_encryption_policy?: string, torrent_file_allocation?: string, torrent_verify_only?: boolean, torrent_verify_restore_status?: string, lifecycle_generation?: string, };
+export type EnqueueItem = { id: string, queue_id: string, url: string, destination: string, filename: string, connections: number | null, speed_limit: string | null, username: string | null, password: string | null, sftp_host_key_md?: string, headers: string | null, checksum: string | null, cookies: string | null, mirrors: string | null, user_agent: string | null, max_tries: number | null, minimum_normal_download_speed_kib?: number, retry_not_found_errors?: boolean, adaptive_mirror_selection?: boolean, proxy: string | null, format_selector: string | null, cookie_source: string | null, is_media: boolean | null, is_torrent?: boolean, torrent_path?: string, torrent_file_indices?: Array<number>, torrent_info_hash?: string, torrent_seed_time?: number, torrent_seed_ratio?: number, torrent_seed_remaining?: number, torrent_web_seeds?: Array<TorrentWebSeed>, torrent_upload_limit?: string, torrent_max_peers?: number, torrent_peer_speed_limit?: string, torrent_check_integrity?: boolean, torrent_trackers?: string, torrent_exclude_trackers?: string, torrent_tracker_connect_timeout?: number, torrent_tracker_timeout?: number, torrent_tracker_interval?: number, torrent_stop_timeout?: number, torrent_prioritize_piece?: string, torrent_remove_unselected_file?: boolean, torrent_encryption_policy?: string, torrent_file_allocation?: string, torrent_verify_only?: boolean, torrent_verify_restore_status?: string, lifecycle_generation?: string, };

src/bindings/PersistedSettings.ts

@@ -11,4 +11,4 @@ import type { SiteLogin } from "./SiteLogin";
 import type { Theme } from "./Theme";
 import type { WindowControlStyle } from "./WindowControlStyle";
 
-export type PersistedSettings = { theme: Theme, fontFamily: FontFamily, windowControlStyle: WindowControlStyle, calendarPreference: CalendarPreference, language: string, baseDownloadFolder: string, categorySubfoldersEnabled: boolean, categorySubfolders: { [key in string]: string }, categoryDirectoryOverrides: { [key in string]: string }, approvedDownloadRoots: Array<string>, maxConcurrentDownloads: number, globalSpeedLimit: string, torrentOverallUploadLimit: string, speedLimitPresetValues: Array<number>, logsEnabled: boolean, isSidebarVisible: boolean, sidebarPosition: string, activeSettingsTab: SettingsTab, scheduler: SchedulerSettings, schedulerRunning: boolean, schedulerActiveDownloadIds: Array<string>, schedulerLastStartKey: string, schedulerLastStopKey: string, lastCustomSpeedLimitKiB: number, lastCustomSpeedLimitUnit: string, perServerConnections: number, maxAutomaticRetries: number, showNotifications: boolean, playCompletionSound: boolean, autoAddClipboardLinks: boolean, appFontSize: AppFontSize, listRowDensity: ListRowDensity, showDockBadge: boolean, showMenuBarIcon: boolean, proxyMode: ProxyMode, proxyHost: string, proxyPort: number, torrentEnableDht: boolean, torrentEnableDht6: boolean, torrentEnablePex: boolean, torrentEnableLpd: boolean, torrentMaxOpenFiles: number, torrentDhtMessageTimeout: number, torrentSeparateSeedSlots: boolean, torrentMaxConcurrentSeeds: number, torrentIpv6Enabled: boolean, torrentListenPort: string, torrentDhtListenPort: string, torrentExternalIp: string, torrentDhtEntryPoint: string, torrentDhtEntryPoint6: string, torrentDhtListenAddr6: string, torrentLpdInterface: string, torrentPeerIdPrefix: string, torrentPeerAgent: string, torrentBindAddress: string, aria2DiskCache: string, customUserAgent: string, askWhereToSaveEachFile: boolean, rememberLastUsedDownloadDirectory: boolean, preventsSleepWhileDownloading: boolean, preventsDisplaySleepWhileDownloading: boolean, mediaCookieSource: MediaCookieSource, siteLogins: Array<SiteLogin>, autoCheckUpdates: boolean, keychainAccessGranted: boolean, };
+export type PersistedSettings = { theme: Theme, fontFamily: FontFamily, windowControlStyle: WindowControlStyle, calendarPreference: CalendarPreference, language: string, baseDownloadFolder: string, categorySubfoldersEnabled: boolean, categorySubfolders: { [key in string]: string }, categoryDirectoryOverrides: { [key in string]: string }, approvedDownloadRoots: Array<string>, maxConcurrentDownloads: number, globalSpeedLimit: string, torrentOverallUploadLimit: string, speedLimitPresetValues: Array<number>, logsEnabled: boolean, isSidebarVisible: boolean, sidebarPosition: string, activeSettingsTab: SettingsTab, scheduler: SchedulerSettings, schedulerRunning: boolean, schedulerActiveDownloadIds: Array<string>, schedulerLastStartKey: string, schedulerLastStopKey: string, lastCustomSpeedLimitKiB: number, lastCustomSpeedLimitUnit: string, perServerConnections: number, maxAutomaticRetries: number, minimumNormalDownloadSpeedKiB: number, retryNotFoundErrors: boolean, adaptiveMirrorSelection: boolean, showNotifications: boolean, playCompletionSound: boolean, autoAddClipboardLinks: boolean, appFontSize: AppFontSize, listRowDensity: ListRowDensity, showDockBadge: boolean, showMenuBarIcon: boolean, proxyMode: ProxyMode, proxyHost: string, proxyPort: number, torrentEnableDht: boolean, torrentEnableDht6: boolean, torrentEnablePex: boolean, torrentEnableLpd: boolean, torrentMaxOpenFiles: number, torrentDhtMessageTimeout: number, torrentSeparateSeedSlots: boolean, torrentMaxConcurrentSeeds: number, torrentIpv6Enabled: boolean, torrentListenPort: string, torrentDhtListenPort: string, torrentExternalIp: string, torrentDhtEntryPoint: string, torrentDhtEntryPoint6: string, torrentDhtListenAddr6: string, torrentLpdInterface: string, torrentPeerIdPrefix: string, torrentPeerAgent: string, torrentBindAddress: string, aria2DiskCache: string, customUserAgent: string, askWhereToSaveEachFile: boolean, rememberLastUsedDownloadDirectory: boolean, preventsSleepWhileDownloading: boolean, preventsDisplaySleepWhileDownloading: boolean, mediaCookieSource: MediaCookieSource, siteLogins: Array<SiteLogin>, autoCheckUpdates: boolean, keychainAccessGranted: boolean, };

src/components/SettingsView.tsx

@@ -963,6 +963,43 @@ runEngineChecks(false);
                     className="app-control w-24 text-center"
                   />
                 </div>
+                <div className="mac-settings-row">
+                  <div className="settings-row-label">
+                    <span>{t($ => $.settings.downloads.minimumNormalDownloadSpeed)}</span>
+                    <small>{t($ => $.settings.downloads.minimumNormalDownloadSpeedDescription)}</small>
+                  </div>
+                  <input
+                    type="number" min="0" max="1048576"
+                    value={settings.minimumNormalDownloadSpeedKiB}
+                    onChange={(event) => settings.setMinimumNormalDownloadSpeedKiB(Number(event.target.value))}
+                    className="app-control w-24 text-center"
+                    aria-label={t($ => $.settings.downloads.minimumNormalDownloadSpeed)}
+                  />
+                </div>
+                <label className="mac-settings-row cursor-default">
+                  <div className="settings-row-label">
+                    <span>{t($ => $.settings.downloads.retryNotFoundErrors)}</span>
+                    <small>{t($ => $.settings.downloads.retryNotFoundErrorsDescription)}</small>
+                  </div>
+                  <input
+                    type="checkbox"
+                    checked={settings.retryNotFoundErrors}
+                    onChange={(event) => settings.setRetryNotFoundErrors(event.target.checked)}
+                    className="mac-switch"
+                  />
+                </label>
+                <label className="mac-settings-row cursor-default">
+                  <div className="settings-row-label">
+                    <span>{t($ => $.settings.downloads.adaptiveMirrorSelection)}</span>
+                    <small>{t($ => $.settings.downloads.adaptiveMirrorSelectionDescription)}</small>
+                  </div>
+                  <input
+                    type="checkbox"
+                    checked={settings.adaptiveMirrorSelection}
+                    onChange={(event) => settings.setAdaptiveMirrorSelection(event.target.checked)}
+                    className="mac-switch"
+                  />
+                </label>
               </div>
 
               <div className="mac-settings-group">

src/i18n/catalogs/en.ts

@@ -843,6 +843,12 @@ const common = {
       parallelDownloadsDescription: 'Max simultaneous active files',
       automaticRetries: 'Automatic retries:',
       automaticRetriesDescription: 'If a connection fails',
+      minimumNormalDownloadSpeed: 'Minimum normal-download speed (KiB/s):',
+      minimumNormalDownloadSpeedDescription: 'Retry HTTP, FTP, and SFTP transfers that remain below this speed. Use 0 to disable.',
+      retryNotFoundErrors: 'Retry temporary not-found errors',
+      retryNotFoundErrorsDescription: 'Treat HTTP/FTP resource-not-found responses as retryable within the automatic retry limit. Off by default.',
+      adaptiveMirrorSelection: 'Adaptive mirror selection',
+      adaptiveMirrorSelectionDescription: 'Use recent transfer performance to choose among multiple mirrors. Server statistics remain private on this device.',
       systemNotification: 'Show system notification when download completes',
       systemNotificationDescription: 'Uses your operating system notification settings',
       completionChime: 'Play in-app completion chime',

src/i18n/catalogs/fa.ts

@@ -843,6 +843,12 @@ const fa = {
       parallelDownloadsDescription: 'حداکثر فایل‌های فعال همزمان',
       automaticRetries: 'تلاش‌های مجدد خودکار:',
       automaticRetriesDescription: 'اگر اتصالی ناموفق باشد',
+      minimumNormalDownloadSpeed: 'حداقل سرعت دانلود عادی (KiB/s):',
+      minimumNormalDownloadSpeedDescription: 'دانلودهای HTTP،‏ FTP و SFTP که سرعتشان پایین‌تر از این مقدار می‌ماند دوباره تلاش می‌شوند. برای غیرفعال‌کردن ۰ را وارد کنید.',
+      retryNotFoundErrors: 'تلاش دوباره برای خطای موقت «پیدا نشد»',
+      retryNotFoundErrorsDescription: 'پاسخ‌های «منبع پیدا نشد» در HTTP/FTP را تا سقف تلاش‌های خودکار دوباره امتحان می‌کند. به‌طور پیش‌فرض خاموش است.',
+      adaptiveMirrorSelection: 'انتخاب هوشمند میرور',
+      adaptiveMirrorSelectionDescription: 'برای انتخاب بین چند میرور از عملکرد دانلودهای اخیر استفاده می‌کند. آمار سرورها فقط روی همین دستگاه نگه‌داری می‌شود.',
       systemNotification: 'نمایش اعلان سیستم هنگام تکمیل دانلود',
       systemNotificationDescription: 'از تنظیمات اعلان سیستم‌عامل شما استفاده می‌کند',
       completionChime: 'پخش صدای تکمیل درون برنامه‌ای',

src/i18n/catalogs/he.ts

@@ -843,6 +843,12 @@ const he = {
       parallelDownloadsDescription: 'מקסימום קבצים פעילים בו-זמנית',
       automaticRetries: 'ניסיונות חוזרים אוטומטיים:',
       automaticRetriesDescription: 'אם חיבור נכשל',
+      minimumNormalDownloadSpeed: 'מהירות מזערית להורדה רגילה (KiB/s):',
+      minimumNormalDownloadSpeedDescription: 'ניסיון חוזר להורדות HTTP,‏ FTP ו-SFTP שנשארות מתחת למהירות זו. 0 משבית את האפשרות.',
+      retryNotFoundErrors: 'ניסיון חוזר לשגיאות זמניות של משאב שלא נמצא',
+      retryNotFoundErrorsDescription: 'מתייחס לתשובות HTTP/FTP של משאב שלא נמצא כניתנות לניסיון חוזר, עד למגבלת הניסיונות האוטומטיים. כבוי כברירת מחדל.',
+      adaptiveMirrorSelection: 'בחירה מסתגלת של שרת מראה',
+      adaptiveMirrorSelectionDescription: 'משתמש בביצועי העברות אחרונות כדי לבחור בין כמה שרתי מראה. סטטיסטיקת השרתים נשמרת באופן פרטי במכשיר זה.',
       systemNotification: 'הצג התראת מערכת כאשר ההורדה מסתיימת',
       systemNotificationDescription: 'משתמש בהגדרות ההתראות של מערכת ההפעלה שלך',
       completionChime: 'השמע צליל סיום בתוך האפליקציה',

src/i18n/catalogs/ru.ts

@@ -843,6 +843,12 @@ const ru = {
       parallelDownloadsDescription: 'Максимальное число одновременно активных файлов',
       automaticRetries: 'Автоматические повторы:',
       automaticRetriesDescription: 'При сбое соединения',
+      minimumNormalDownloadSpeed: 'Минимальная скорость обычной загрузки (КиБ/с):',
+      minimumNormalDownloadSpeedDescription: 'Повторять HTTP-, FTP- и SFTP-загрузки, если скорость остаётся ниже указанной. Значение 0 отключает эту функцию.',
+      retryNotFoundErrors: 'Повторять временные ошибки «не найдено»',
+      retryNotFoundErrorsDescription: 'Считать ответы HTTP/FTP «ресурс не найден» повторяемыми в пределах лимита автоматических попыток. По умолчанию выключено.',
+      adaptiveMirrorSelection: 'Адаптивный выбор зеркала',
+      adaptiveMirrorSelectionDescription: 'Выбирать из нескольких зеркал по недавней скорости. Статистика серверов хранится конфиденциально на этом устройстве.',
       systemNotification: 'Показывать системное уведомление по завершении загрузки',
       systemNotificationDescription: 'Использует настройки уведомлений вашей операционной системы',
       completionChime: 'Воспроизводить звуковой сигнал завершения в приложении',

src/i18n/catalogs/uk.ts

@@ -843,6 +843,12 @@ const uk = {
       parallelDownloadsDescription: 'Макс. одночасних активних файлів',
       automaticRetries: 'Автоматичні повторні спроби:',
       automaticRetriesDescription: 'Якщо з\'єднання перерветься',
+      minimumNormalDownloadSpeed: 'Мінімальна швидкість звичайного завантаження (КіБ/с):',
+      minimumNormalDownloadSpeedDescription: 'Повторювати HTTP-, FTP- і SFTP-завантаження, якщо швидкість залишається нижчою за вказану. Значення 0 вимикає цю функцію.',
+      retryNotFoundErrors: 'Повторювати тимчасові помилки «не знайдено»',
+      retryNotFoundErrorsDescription: 'Вважати відповіді HTTP/FTP «ресурс не знайдено» придатними до повтору в межах ліміту автоматичних спроб. Типово вимкнено.',
+      adaptiveMirrorSelection: 'Адаптивний вибір дзеркала',
+      adaptiveMirrorSelectionDescription: 'Вибирати з кількох дзеркал за нещодавньою швидкістю. Статистика серверів приватно зберігається на цьому пристрої.',
       systemNotification: 'Показувати системне сповіщення по завершенні завантаження',
       systemNotificationDescription: 'Використовує налаштування сповіщень вашої операційної системи',
       completionChime: 'Відтворювати звуковий сигнал по завершенні в програмі',

src/i18n/catalogs/zh-CN.ts

@@ -843,6 +843,12 @@ const zhCN = {
       parallelDownloadsDescription: '最大同时活动文件数',
       automaticRetries: '自动重试：',
       automaticRetriesDescription: '如果连接失败',
+      minimumNormalDownloadSpeed: '普通下载最低速度（KiB/s）：',
+      minimumNormalDownloadSpeedDescription: 'HTTP、FTP 或 SFTP 下载持续低于此速度时重试。设为 0 可关闭。',
+      retryNotFoundErrors: '重试临时“未找到”错误',
+      retryNotFoundErrorsDescription: '在自动重试次数限制内，将 HTTP/FTP 的“资源未找到”响应视为可重试错误。默认关闭。',
+      adaptiveMirrorSelection: '自适应镜像选择',
+      adaptiveMirrorSelectionDescription: '根据近期传输性能在多个镜像之间选择。服务器统计信息仅私密保存在此设备上。',
       systemNotification: '下载完成时显示系统通知',
       systemNotificationDescription: '使用操作系统的通知设置',
       completionChime: '播放应用内完成提示音',

src/store/useDownloadStore.test.ts

@@ -36,6 +36,9 @@ vi.mock('./useSettingsStore', () => ({
       perServerConnections: 16,
       customUserAgent: '',
       maxAutomaticRetries: 3,
+      minimumNormalDownloadSpeedKiB: 0,
+      retryNotFoundErrors: false,
+      adaptiveMirrorSelection: true,
       mediaCookieSource: 'none',
       baseDownloadFolder: '~/Downloads',
       categorySubfoldersEnabled: true,
@@ -68,6 +71,9 @@ describe('useDownloadStore', () => {
       perServerConnections: 16,
       customUserAgent: '',
       maxAutomaticRetries: 3,
+      minimumNormalDownloadSpeedKiB: 0,
+      retryNotFoundErrors: false,
+      adaptiveMirrorSelection: true,
       mediaCookieSource: 'none',
       baseDownloadFolder: '~/Downloads',
       categorySubfoldersEnabled: true,
@@ -1147,6 +1153,38 @@ describe('useDownloadStore', () => {
     });
   });
 
+  it('dispatches normal reliability and adaptive mirror settings to the native queue', async () => {
+    vi.mocked(useSettingsStore.getState).mockReturnValue({
+      ...useSettingsStore.getState(),
+      minimumNormalDownloadSpeedKiB: 64,
+      retryNotFoundErrors: true,
+      adaptiveMirrorSelection: false,
+    } as ReturnType<typeof useSettingsStore.getState>);
+    useDownloadStore.setState({
+      downloads: [
+        { id: 'reliable', url: 'https://example.test/file', fileName: 'file.bin', destination: '/tmp', status: 'queued', category: 'Other', dateAdded: '', queueId: 'MAIN', hasBeenDispatched: false },
+      ] as any[],
+    });
+    vi.mocked(ipc.invokeCommand).mockImplementation(async (command: string) => {
+      if (command === 'enqueue_download') return { id: 'reliable', filename: 'file.bin' } as never;
+      if (command === 'get_pending_order') return ['reliable'] as never;
+      return undefined;
+    });
+
+    await useDownloadStore.getState().startQueue('MAIN');
+
+    expect(ipc.invokeCommand).toHaveBeenCalledWith(
+      'enqueue_download',
+      expect.objectContaining({
+        item: expect.objectContaining({
+          minimum_normal_download_speed_kib: 64,
+          retry_not_found_errors: true,
+          adaptive_mirror_selection: false,
+        })
+      })
+    );
+  });
+
   it('does not resurrect a row removed while its backend enqueue is in flight', async () => {
     useDownloadStore.setState({
       downloads: [

src/store/useDownloadStore.ts

@@ -370,6 +370,9 @@ async function dispatchItemInternal(id: string, proxyOverride?: string | null):
         mirrors: item.mirrors || null,
         user_agent: settings.customUserAgent.trim() || null,
         max_tries: settings.maxAutomaticRetries,
+        minimum_normal_download_speed_kib: settings.minimumNormalDownloadSpeedKiB,
+        retry_not_found_errors: settings.retryNotFoundErrors,
+        adaptive_mirror_selection: settings.adaptiveMirrorSelection,
         proxy,
         format_selector: item.mediaFormatSelector || null,
         cookie_source: settings.mediaCookieSource !== 'none' ? settings.mediaCookieSource : null,
@@ -2441,6 +2444,9 @@ export const useDownloadStore = create<DownloadState>((set, get) => {
             mirrors: item.mirrors || null,
             user_agent: settings.customUserAgent.trim() || null,
             max_tries: settings.maxAutomaticRetries,
+            minimum_normal_download_speed_kib: settings.minimumNormalDownloadSpeedKiB,
+            retry_not_found_errors: settings.retryNotFoundErrors,
+            adaptive_mirror_selection: settings.adaptiveMirrorSelection,
             proxy,
             format_selector: item.mediaFormatSelector || null,
             cookie_source: settings.mediaCookieSource !== 'none' ? settings.mediaCookieSource : null,

src/store/useSettingsStore.test.ts

@@ -25,6 +25,43 @@ describe('last used download directory preference', () => {
   });
 });
 
+describe('normal download reliability preferences', () => {
+  beforeEach(() => {
+    vi.clearAllMocks();
+    useSettingsStore.setState({
+      minimumNormalDownloadSpeedKiB: 0,
+      retryNotFoundErrors: false,
+      adaptiveMirrorSelection: true,
+    });
+  });
+
+  it('uses migration-safe defaults and persists bounded changes', async () => {
+    expect(useSettingsStore.getState()).toMatchObject({
+      minimumNormalDownloadSpeedKiB: 0,
+      retryNotFoundErrors: false,
+      adaptiveMirrorSelection: true,
+    });
+
+    useSettingsStore.getState().setMinimumNormalDownloadSpeedKiB(64);
+    useSettingsStore.getState().setRetryNotFoundErrors(true);
+    useSettingsStore.getState().setAdaptiveMirrorSelection(false);
+    await vi.waitFor(() => {
+      const save = vi.mocked(ipc.invokeCommand).mock.calls
+        .filter(([command]) => command === 'db_save_settings')
+        .slice(-1)[0];
+      expect(save).toBeDefined();
+      expect(JSON.parse((save?.[1] as { data: string }).data).state).toMatchObject({
+        minimumNormalDownloadSpeedKiB: 64,
+        retryNotFoundErrors: true,
+        adaptiveMirrorSelection: false,
+      });
+    });
+
+    useSettingsStore.getState().setMinimumNormalDownloadSpeedKiB(2_000_000);
+    expect(useSettingsStore.getState().minimumNormalDownloadSpeedKiB).toBe(1_048_576);
+  });
+});
+
 describe('Torrent peer discovery preferences', () => {
   beforeEach(() => {
     vi.clearAllMocks();

src/store/useSettingsStore.ts

@@ -234,6 +234,9 @@ export interface SettingsState {
   // Replicated SwiftUI App Settings
   perServerConnections: number;
   maxAutomaticRetries: number;
+  minimumNormalDownloadSpeedKiB: number;
+  retryNotFoundErrors: boolean;
+  adaptiveMirrorSelection: boolean;
   showNotifications: boolean;
   playCompletionSound: boolean;
   autoAddClipboardLinks: boolean;
@@ -307,6 +310,9 @@ export interface SettingsState {
 
   setPerServerConnections: (count: number) => void;
   setMaxAutomaticRetries: (count: number) => void;
+  setMinimumNormalDownloadSpeedKiB: (speed: number) => void;
+  setRetryNotFoundErrors: (enabled: boolean) => void;
+  setAdaptiveMirrorSelection: (enabled: boolean) => void;
   setShowNotifications: (show: boolean) => void;
   setPlayCompletionSound: (play: boolean) => void;
   setAutoAddClipboardLinks: (enabled: boolean) => void;
@@ -403,6 +409,9 @@ export const useSettingsStore = create<SettingsState>()(
       // Replicated SwiftUI defaults
       perServerConnections: 16,
       maxAutomaticRetries: 3,
+      minimumNormalDownloadSpeedKiB: 0,
+      retryNotFoundErrors: false,
+      adaptiveMirrorSelection: true,
       showNotifications: true,
       playCompletionSound: false,
       autoAddClipboardLinks: false,
@@ -526,6 +535,16 @@ export const useSettingsStore = create<SettingsState>()(
       setMaxAutomaticRetries: (maxAutomaticRetries) => set({
         maxAutomaticRetries: clampSettingInteger(maxAutomaticRetries, 0, 10, 3)
       }),
+      setMinimumNormalDownloadSpeedKiB: (minimumNormalDownloadSpeedKiB) => set({
+        minimumNormalDownloadSpeedKiB: clampSettingInteger(
+          minimumNormalDownloadSpeedKiB,
+          0,
+          1_048_576,
+          0
+        )
+      }),
+      setRetryNotFoundErrors: (retryNotFoundErrors) => set({ retryNotFoundErrors }),
+      setAdaptiveMirrorSelection: (adaptiveMirrorSelection) => set({ adaptiveMirrorSelection }),
       setShowNotifications: (showNotifications) => set({ showNotifications }),
       setPlayCompletionSound: (playCompletionSound) => set({ playCompletionSound }),
       setAutoAddClipboardLinks: (autoAddClipboardLinks) => set({ autoAddClipboardLinks }),
@@ -762,6 +781,9 @@ export const useSettingsStore = create<SettingsState>()(
         
         perServerConnections: state.perServerConnections,
         maxAutomaticRetries: state.maxAutomaticRetries,
+        minimumNormalDownloadSpeedKiB: state.minimumNormalDownloadSpeedKiB,
+        retryNotFoundErrors: state.retryNotFoundErrors,
+        adaptiveMirrorSelection: state.adaptiveMirrorSelection,
         showNotifications: state.showNotifications,
         playCompletionSound: state.playCompletionSound,
         autoAddClipboardLinks: state.autoAddClipboardLinks,
@@ -961,6 +983,20 @@ export const useSettingsStore = create<SettingsState>()(
             10,
             currentState.maxAutomaticRetries
           ),
+          minimumNormalDownloadSpeedKiB: clampSettingInteger(
+            persisted.minimumNormalDownloadSpeedKiB,
+            0,
+            1_048_576,
+            currentState.minimumNormalDownloadSpeedKiB
+          ),
+          retryNotFoundErrors: persistedBoolean(
+            persisted.retryNotFoundErrors,
+            currentState.retryNotFoundErrors
+          ),
+          adaptiveMirrorSelection: persistedBoolean(
+            persisted.adaptiveMirrorSelection,
+            currentState.adaptiveMirrorSelection
+          ),
           speedLimitPresetValues: Array.isArray(persisted.speedLimitPresetValues)
             ? persisted.speedLimitPresetValues
             : currentState.speedLimitPresetValues,