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/views/Login.vue

@@ -483,20 +483,17 @@ const isResettingOnboarding = ref(false)
 async function restartOnboarding() {
   if (isResettingOnboarding.value) return
   isResettingOnboarding.value = true
-  try {
-    await rpcClient.resetOnboarding()
-    localStorage.removeItem('neode_onboarding_complete')
-    localStorage.removeItem('neode_did')
-    localStorage.removeItem('neode_did_state')
-    localStorage.removeItem('neode_backup_created')
-    await router.push('/onboarding/intro')
+  // Local-only reset — no RPC needed since user isn't logged in.
+  // Onboarding pages are all public, so clearing localStorage is enough.
+  localStorage.removeItem('neode_onboarding_complete')
+  localStorage.removeItem('neode_did')
+  localStorage.removeItem('neode_did_state')
+  localStorage.removeItem('neode_backup_created')
+  router.push('/onboarding/intro').then(() => {
     window.location.reload()
-  } catch (err) {
-    console.error('Failed to reset onboarding:', err)
-    error.value = err instanceof Error ? err.message : 'Failed to reset onboarding'
-  } finally {
-    isResettingOnboarding.value = false
-  }
+  }).catch(() => {
+    window.location.href = '/onboarding/intro'
+  })
 }
 </script>