Various fixes for desktop (#4976)

# Description of Changes
- ~Force classic logo~
- Refer to email instead of username in SaaS sign in flow
- Allow drag-and-drop files into desktop app
- Convert terminology & icons from upload/download to open/save in
desktop version

frontend/src/core/components/tools/editTableOfContents/EditTableOfContentsWorkbenchView.tsx

@@ -14,6 +14,7 @@ import { BookmarkNode } from '@app/utils/editTableOfContents';
 import ErrorNotification from '@app/components/tools/shared/ErrorNotification';
 import ResultsPreview from '@app/components/tools/shared/ResultsPreview';
 import BookmarkEditor from '@app/components/tools/editTableOfContents/BookmarkEditor';
+import { useFileActionTerminology } from '@app/hooks/useFileActionTerminology';
 
 export interface EditTableOfContentsWorkbenchViewData {
   bookmarks: BookmarkNode[];
@@ -40,6 +41,7 @@ interface EditTableOfContentsWorkbenchViewProps {
 
 const EditTableOfContentsWorkbenchView = ({ data }: EditTableOfContentsWorkbenchViewProps) => {
   const { t } = useTranslation();
+  const terminology = useFileActionTerminology();
 
   if (!data) {
     return (
@@ -180,7 +182,7 @@ const EditTableOfContentsWorkbenchView = ({ data }: EditTableOfContentsWorkbench
                     download={downloadFilename ?? undefined}
                     leftSection={<LocalIcon icon='download-rounded' />}
                   >
-                    {t('download', 'Download')}
+                    {terminology.download}
                   </Button>
                 )}
                 <Button

frontend/src/core/components/tools/shared/ReviewToolStep.tsx

@@ -1,13 +1,14 @@
 import React, { useEffect, useRef } from "react";
 import { Button, Stack } from "@mantine/core";
 import { useTranslation } from "react-i18next";
-import DownloadIcon from "@mui/icons-material/Download";
 import UndoIcon from "@mui/icons-material/Undo";
 import ErrorNotification from "@app/components/tools/shared/ErrorNotification";
 import ResultsPreview from "@app/components/tools/shared/ResultsPreview";
 import { SuggestedToolsSection } from "@app/components/tools/shared/SuggestedToolsSection";
 import { ToolOperationHook } from "@app/hooks/tools/shared/useToolOperation";
 import { Tooltip } from "@app/components/shared/Tooltip";
+import { useFileActionTerminology } from "@app/hooks/useFileActionTerminology";
+import { useFileActionIcons } from "@app/hooks/useFileActionIcons";
 
 export interface ReviewToolStepProps<TParams = unknown> {
   isVisible: boolean;
@@ -29,6 +30,9 @@ function ReviewStepContent<TParams = unknown>({
   onUndo?: () => void;
 }) {
   const { t } = useTranslation();
+  const terminology = useFileActionTerminology();
+  const icons = useFileActionIcons();
+  const DownloadIcon = icons.download;
   const stepRef = useRef<HTMLDivElement>(null);
 
   const handleUndo = async () => {
@@ -96,7 +100,7 @@ function ReviewStepContent<TParams = unknown>({
           fullWidth
           mb="md"
         >
-          {t("download", "Download")}
+          {terminology.download}
         </Button>
       )}
 

frontend/src/core/components/tools/showJS/ShowJSView.tsx

@@ -6,6 +6,7 @@ import ArrowDownwardRoundedIcon from "@mui/icons-material/ArrowDownwardRounded";
 import DownloadRoundedIcon from "@mui/icons-material/DownloadRounded";
 import "@app/components/tools/showJS/ShowJSView.css";
 import { useTranslation } from "react-i18next";
+import { useFileActionTerminology } from "@app/hooks/useFileActionTerminology";
 
 import {
   tokenizeToLines,
@@ -28,6 +29,7 @@ interface ShowJSViewProps {
 
 const ShowJSView: React.FC<ShowJSViewProps> = ({ data }) => {
   const { t } = useTranslation();
+  const terminology = useFileActionTerminology();
   const text = useMemo(() => {
     if (typeof data === "string") return data;
     return data?.scriptText ?? "";
@@ -173,7 +175,7 @@ const ShowJSView: React.FC<ShowJSViewProps> = ({ data }) => {
               disabled={!downloadUrl}
               leftSection={<DownloadRoundedIcon fontSize="small" />}
             >
-              {t("download", "Download")}
+              {terminology.download}
             </Button>
             <Button
               size="xs"