Plan thread C1, journey **J1 `launch`**, counter **`renderer.initialBytes`**. Stacked on #1694 → #1693 → #1692; merge in order.
`apps/web/src/app/app-date-locales.ts` imported the locale data of all 18 supported languages eagerly, so every user shipped and parsed all of it at startup. Each locale is now a dynamic import keyed by the Angular locale id that `normalizeDateLocale()` derives from the app language (`by` → `be`, `ary` → `ar-MA`, `zhtw` → `zh-Hant`); English needs no data.
Ordering is preserved so no template renders a locale whose data has not arrived (Angular throws in that case):
- `main.ts` awaits the initial language's data (from `getInitialLanguage()`) before `bootstrapApplication`.
- Both `TranslateService.use()` call sites, `AppComponent.initSettings()` and `SettingsFormFacade.applySavedSettings()`, register the data first through the new `AppDateLocaleService`.
- A failed load never leaves the locale without data: English formatting is registered under the requested id (eager 1.1 KB `@angular/common/locales/en`), so `DatePipe` renders instead of throwing; the locale is not marked registered, so the next call retries and a success replaces the fallback (review follow-up).
- `AppDateLocaleService.use()` orders switches by request, not by completion: a switch whose data arrives after a newer request is dropped, so the language chosen last wins (review follow-up).
No kill switch: behavior is identical once the locale resolves, and the only new failure mode (a same-origin chunk failing to load) is shared with every lazy route.
Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
## Summary
- Normalize Xtream recently-added timestamps across UI, import, and dashboard query paths.
- Filter future/invalid provider dates before ranking rails and migrate legacy millisecond cache rows.
- Add regression coverage for future timestamps, series date priority, and DB migration behavior.
## Validation
- GitHub checks passed, including Unit Tests and Typechecks, Web E2E, Electron E2E on macOS/Ubuntu/Windows, CodeQL, builds, and Greptile Review.
- Replaced moment.js usage with Intl.DateTimeFormat for date formatting in various components.
- Introduced utility functions `normalizeDateLocale` and `formatWithIntl` for locale normalization and date formatting.
- Updated PlaylistSwitcher, RecentPlaylists, ContentCard, EPG components, and MultiEpgContainer to utilize the new date formatting approach.
- Removed moment-date pipe and related tests, simplifying date handling logic.
- Ensured all date displays respect the current locale settings.
Entire-Checkpoint: 271bd0162027
