feat(frontend): i18n expansion, admin/profile i18n, grid/list view fix, empty state

- Add 5 new locales (hi, ar, ru, ja, ko) — now 14 total
- Admin panel: 117 i18n keys, confirm modal, animated tabs, no inline handlers
- Profile page: 58 i18n keys with data-i18n attributes
- Fix i18n safeT() shadowing bug and translationsLoaded timing
- Fix grid/list view: list header no longer shows in grid mode on login
- Fix classList.toggle hidden sync for view switching across all nav functions
- Revert .hidden important that broke login page rendering
- Add files empty state (no_files + empty_hint) with translations
- Fix language selector dropdown scroll and styling
- Fix admin panel scroll with sticky tabs

src/interfaces/api/handlers/app_password_handler.rs

@@ -6,7 +6,7 @@
 use crate::application::dtos::app_password_dto::CreateAppPasswordRequestDto;
 use crate::common::di::AppState;
 use crate::interfaces::errors::AppError;
-use crate::interfaces::middleware::auth::CurrentUser;
+use crate::interfaces::middleware::auth::AuthUser;
 use axum::extract::State;
 use axum::routing::{delete, get, post};
 use axum::{Json, Router};
@@ -26,7 +26,7 @@ pub fn app_password_routes() -> Router<Arc<AppState>> {
 /// Returns the plain-text password ONCE. The user must copy it immediately.
 async fn create_app_password(
     State(state): State<Arc<AppState>>,
-    axum::Extension(user): axum::Extension<CurrentUser>,
+    user: AuthUser,
     Json(request): Json<CreateAppPasswordRequestDto>,
 ) -> Result<Json<crate::application::dtos::app_password_dto::AppPasswordCreatedResponseDto>, AppError>
 {
@@ -48,7 +48,7 @@ async fn create_app_password(
 /// Never returns plain-text passwords (only prefix + metadata).
 async fn list_app_passwords(
     State(state): State<Arc<AppState>>,
-    axum::Extension(user): axum::Extension<CurrentUser>,
+    user: AuthUser,
 ) -> Result<Json<crate::application::dtos::app_password_dto::AppPasswordListResponseDto>, AppError>
 {
     let service = state
@@ -64,7 +64,7 @@ async fn list_app_passwords(
 /// DELETE /api/auth/app-passwords/:id — Revoke an app password.
 async fn revoke_app_password(
     State(state): State<Arc<AppState>>,
-    axum::Extension(user): axum::Extension<CurrentUser>,
+    user: AuthUser,
     axum::extract::Path(id): axum::extract::Path<String>,
 ) -> Result<Json<crate::application::dtos::app_password_dto::AppPasswordRevokeResponseDto>, AppError>
 {