fix(files): hide desktop-only reveal action and label download in browser clients

Reveal-in-file-manager was always offered whenever the server exposed
revealPath, including in a plain browser tab where there is no local
file manager to reveal into. Gate it behind a new isBrowserClientRuntime
check (web platform, no Electron shell) and relabel the save action to
"Download" for that case, since it triggers a browser-style file
download rather than an in-place save.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

packages/ui/src/components/views/FilesView.tsx

@@ -70,7 +70,7 @@ import { Icon } from "@/components/icon/Icon";
 import { useMessageTTS } from '@/hooks/useMessageTTS';
 import { ensurePierreThemeRegistered } from '@/lib/shiki/appThemeRegistry';
 import { getDefaultTheme } from '@/lib/theme/themes';
-import { openDesktopFileInApp, openDesktopPath } from '@/lib/desktop';
+import { isBrowserClientRuntime, openDesktopFileInApp, openDesktopPath } from '@/lib/desktop';
 import { useOpenInAppsStore } from '@/stores/useOpenInAppsStore';
 import { eventMatchesShortcut, getEffectiveShortcutCombo } from '@/lib/shortcuts';
 import { useI18n } from '@/lib/i18n';
@@ -361,6 +361,7 @@ interface FileRowProps {
   isExpanded: boolean;
   isActive: boolean;
   isMobile: boolean;
+  isBrowserClient: boolean;
   alwaysShowActions: boolean;
   status?: FileStatus | null;
   badge?: { modified: number; added: number } | null;
@@ -388,6 +389,7 @@ const FileRow: React.FC<FileRowProps> = ({
   isExpanded,
   isActive,
   isMobile,
+  isBrowserClient,
   alwaysShowActions,
   status,
   badge,
@@ -405,14 +407,17 @@ const FileRow: React.FC<FileRowProps> = ({
   const { t } = useI18n();
   const isDir = node.type === 'directory';
   const { canRename, canCreateFile, canCreateFolder, canDelete, canReveal } = permissions;
+  const canDownload = !isDir && Boolean(downloadFile);
+  const canRevealPath = canReveal && !isBrowserClient;
+  const hasMenuActions = canRename || canCreateFile || canCreateFolder || canDelete || canDownload || canRevealPath;
 
   const handleContextMenu = React.useCallback((event?: React.MouseEvent) => {
-    if (!canRename && !canCreateFile && !canCreateFolder && !canDelete && !canReveal) {
+    if (!hasMenuActions) {
       return;
     }
     event?.preventDefault();
     setRightClickMenuPath(node.path);
-  }, [canRename, canCreateFile, canCreateFolder, canDelete, canReveal, node.path, setRightClickMenuPath]);
+  }, [hasMenuActions, node.path, setRightClickMenuPath]);
 
   const handleInteraction = React.useCallback(() => {
     if (isDir) {
@@ -474,10 +479,10 @@ const FileRow: React.FC<FileRowProps> = ({
             toast.error(t('sidebarFilesTree.toast.operationFailed'));
           });
         }}>
-          <Icon name="download" className="mr-2 size-4" /> {t('sidebarFilesTree.menu.save')}
+          <Icon name="download" className="mr-2 size-4" /> {t(isBrowserClient ? 'sidebarFilesTree.menu.download' : 'sidebarFilesTree.menu.save')}
         </Item>
       )}
-      {canReveal && (
+      {canRevealPath && (
         <Item onClick={(e: React.MouseEvent) => { e.stopPropagation(); onRevealPath(node.path); }}>
           <Icon name="folder-received" className="mr-2 size-4" /> {t(getRevealLabelKey())}
         </Item>
@@ -546,7 +551,7 @@ const FileRow: React.FC<FileRowProps> = ({
           </span>
         )}
       </button>
-      {(canRename || canCreateFile || canCreateFolder || canDelete || canReveal) && (
+      {hasMenuActions && (
         <div className={cn(
           "absolute right-1 top-1/2 -translate-y-1/2",
           alwaysShowActions ? "opacity-100" : "opacity-0 focus-within:opacity-100 group-hover:opacity-100"
@@ -720,6 +725,7 @@ export const FilesView: React.FC<FilesViewProps> = ({ mode = 'full' }) => {
   const { files, runtime } = useRuntimeAPIs();
   const { currentTheme, availableThemes, lightThemeId, darkThemeId } = useThemeSystem();
   const { isMobile, isTablet, screenWidth } = useDeviceInfo();
+  const isBrowserClient = isBrowserClientRuntime(runtime.platform);
   const alwaysShowActions = isMobile || isTablet;
   const showHidden = useDirectoryShowHidden();
   const showGitignored = useFilesViewShowGitignored();
@@ -2302,6 +2308,7 @@ export const FilesView: React.FC<FilesViewProps> = ({ mode = 'full' }) => {
             isExpanded={isExpanded}
             isActive={isActive}
             isMobile={isMobile}
+            isBrowserClient={isBrowserClient}
             alwaysShowActions={alwaysShowActions}
             status={!isDir ? getFileStatus(node.path) : undefined}
             badge={isDir ? getFolderBadge(node.path) : undefined}