Add alpha UI routes for marketplace, peers, and channels

- Import MarketplaceView, PeersView, and ChannelsView components
- Add routes for /marketplace, /peers, and /channels
- Update sidebar navigation to point to correct routes
- Add Peers and Channels menu items to sidebar

ui/desktop/src/App.tsx

@@ -50,6 +50,9 @@ import ExtensionsView, { ExtensionsViewOptions } from './components/extensions/E
 import { Recipe } from './recipe';
 import RecipesView from './components/recipes/RecipesView';
 import RecipeEditor from './components/recipes/RecipeEditor';
+import MarketplaceView from './components/marketplace/MarketplaceView';
+import PeersView from './components/peers/PeersView';
+import ChannelsView from './components/channels/ChannelsView';
 // import BuildView from './components/build/BuildView';
 // import { CleanFeedView } from './components/feed/CleanFeedView';
 // import { TestFeed } from './components/feed/TestFeed';
@@ -1527,6 +1530,30 @@ export default function App() {
                     </ProviderGuard>
                   }
                 />
+                <Route
+                  path="marketplace"
+                  element={
+                    <ProviderGuard>
+                      <MarketplaceView />
+                    </ProviderGuard>
+                  }
+                />
+                <Route
+                  path="peers"
+                  element={
+                    <ProviderGuard>
+                      <PeersView />
+                    </ProviderGuard>
+                  }
+                />
+                <Route
+                  path="channels"
+                  element={
+                    <ProviderGuard>
+                      <ChannelsView />
+                    </ProviderGuard>
+                  }
+                />
                 {/* <Route
                   path="build"
                   element={

ui/desktop/src/components/GooseSidebar/AppSidebar.tsx

@@ -72,11 +72,25 @@ const menuItems: NavigationEntry[] = [
   },
   {
     type: 'item',
-    path: '/schedules',
+    path: '/marketplace',
     label: 'Marketplace',
     icon: Clock,
     tooltip: 'Browse marketplace',
   },
+  {
+    type: 'item',
+    path: '/peers',
+    label: 'Peers',
+    icon: History,
+    tooltip: 'Connect with peers',
+  },
+  {
+    type: 'item',
+    path: '/channels',
+    label: 'Channels',
+    icon: FileText,
+    tooltip: 'Browse channels',
+  },
   {
     type: 'item',
     path: '/extensions',