Šepot — end-to-end encrypted messenger

Initial public release. Anonymous on-device identity (no phone number,
e-mail, or password), Signal-protocol cryptography (X3DH + PQXDH, Double
Ratchet, sealed sender) via libsignal, a metadata-minimizing relay,
group chats, disappearing messages, encrypted local storage, optional
Tor transport, and a UI localized into Czech, English, German, Russian,
and Italian.

Monorepo: Flutter client (app/), Rust relay + wire types (rust/),
protobuf definitions (proto/), self-host deploy (deploy/).

Licensed under AGPL-3.0 with an app-store distribution exception (§7).

app/lib/core/l10n/l10n.dart

@@ -0,0 +1,23 @@
+import 'dart:ui';
+
+import 'package:flutter/widgets.dart';
+import 'package:sepot/l10n/generated/app_localizations.dart';
+
+export 'package:sepot/l10n/generated/app_localizations.dart';
+
+/// Zkratka pro přístup k lokalizovaným textům: `context.l10n.klic`.
+extension L10nX on BuildContext {
+  AppLocalizations get l10n => AppLocalizations.of(this);
+}
+
+/// Lokalizace mimo widget tree (notifikace, headless push start).
+///
+/// Preferuje ruční volbu jazyka (`override`, typicky
+/// `LocaleNotifier.readStored()`), jinak jazyk systému; nepodporovaný
+/// jazyk spadne na angličtinu — stejné pořadí jako `supportedLocales`.
+AppLocalizations l10nFor(Locale? override) {
+  final locale = override ?? PlatformDispatcher.instance.locale;
+  final lang = Locale(locale.languageCode);
+  final supported = AppLocalizations.delegate.isSupported(lang);
+  return lookupAppLocalizations(supported ? lang : const Locale('en'));
+}