fix: prevent My Apps crash when installing apps + add filebrowser to demo

The My Apps page went blank after installing apps because pkg['static-files'].icon
was accessed without optional chaining on dynamically installed packages that lack
the static-files property.

- Make static-files optional in PackageDataEntry type
- Add defensive ?.icon access with fallback in Apps.vue and AppDetails.vue
- Add filebrowser to mock backend staticDevApps (enables Cloud page in demo)
- Expand portMappings and marketplaceMetadata for all marketplace apps
- installPackage now uses staticApp() format for consistent data shape

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

neode-ui/src/App.vue

@@ -9,7 +9,7 @@
     <!-- Spotlight command palette (Cmd+K / Ctrl+K) -->
     <SpotlightSearch />
 
-    <!-- CLI popup (Cmd+C / Ctrl+C) -->
+    <!-- CLI popup (F key) -->
     <CLIPopup />
 
     <!-- App launcher overlay (iframe popup) -->
@@ -125,8 +125,8 @@ function onKeyDown(e: KeyboardEvent) {
     spotlightStore.toggle()
     return
   }
-  // Cmd+C / Ctrl+C - CLI popup (skip when in input so copy still works)
-  if (mod && (e.key === 'c' || e.key === 'C') && !isInput) {
+  // F key - CLI popup (skip when in input or modifier held)
+  if ((e.key === 'f' || e.key === 'F') && !isInput && !mod && !e.altKey) {
     e.preventDefault()
     cliStore.toggle()
     return