fix: Show platform-specific keyboard shortcuts in UI

ui/desktop/src/components/ChatInput.tsx

@@ -37,6 +37,7 @@ import {
   trackCreateRecipeOpened,
   trackEditRecipeOpened,
 } from '../utils/analytics';
+import { getNavigationShortcutText } from '../utils/keyboardShortcuts';
 
 interface QueuedMessage {
   id: string;
@@ -1212,7 +1213,7 @@ export default function ChatInput({
             data-testid="chat-input"
             autoFocus
             id="dynamic-textarea"
-            placeholder={isRecording ? '' : '⌘↑/⌘↓ to navigate messages'}
+            placeholder={isRecording ? '' : getNavigationShortcutText()}
             value={displayValue}
             onChange={handleChange}
             onCompositionStart={handleCompositionStart}

ui/desktop/src/components/extensions/ExtensionsView.tsx

@@ -17,6 +17,7 @@ import {
 import { activateExtension } from '../settings/extensions';
 import { useConfig } from '../ConfigContext';
 import { SearchView } from '../conversation/SearchView';
+import { getSearchShortcutText } from '../../utils/keyboardShortcuts';
 
 export type ExtensionsViewOptions = {
   deepLinkConfig?: ExtensionConfig;
@@ -101,8 +102,8 @@ export default function ExtensionsView({
             </div>
             <p className="text-sm text-text-muted mb-6">
               These extensions use the Model Context Protocol (MCP). They can expand Goose's
-              capabilities using three main components: Prompts, Resources, and Tools. ⌘F/Ctrl+F to
-              search.
+              capabilities using three main components: Prompts, Resources, and Tools.{' '}
+              {getSearchShortcutText()} to search.
             </p>
 
             {/* Action Buttons */}

ui/desktop/src/components/recipes/RecipesView.tsx

@@ -55,6 +55,7 @@ import {
   DropdownMenuTrigger,
   DropdownMenuSeparator,
 } from '../ui/dropdown-menu';
+import { getSearchShortcutText } from '../../utils/keyboardShortcuts';
 
 export default function RecipesView() {
   const setView = useNavigation();
@@ -694,7 +695,7 @@ export default function RecipesView() {
               </div>
               <p className="text-sm text-text-muted mb-1">
                 View and manage your saved recipes to quickly start new sessions with predefined
-                configurations. ⌘F/Ctrl+F to search.
+                configurations. {getSearchShortcutText()} to search.
               </p>
             </div>
           </div>

ui/desktop/src/components/sessions/SessionListView.tsx

@@ -30,6 +30,7 @@ import {
   Session,
   updateSessionName,
 } from '../../api';
+import { getSearchShortcutText } from '../../utils/keyboardShortcuts';
 
 interface EditSessionModalProps {
   session: Session | null;
@@ -740,7 +741,8 @@ const SessionListView: React.FC<SessionListViewProps> = React.memo(
                   </Button>
                 </div>
                 <p className="text-sm text-text-muted mb-4">
-                  View and search your past conversations with Goose. ⌘F/Ctrl+F to search.
+                  View and search your past conversations with Goose. {getSearchShortcutText()} to
+                  search.
                 </p>
               </div>
             </div>

ui/desktop/src/utils/keyboardShortcuts.ts

@@ -0,0 +1,11 @@
+function isMac(): boolean {
+  return window.electron?.platform === 'darwin';
+}
+
+export function getNavigationShortcutText(): string {
+  return isMac() ? '⌘↑/⌘↓ to navigate messages' : 'Ctrl+↑/Ctrl+↓ to navigate messages';
+}
+
+export function getSearchShortcutText(): string {
+  return isMac() ? '⌘F' : 'Ctrl+F';
+}