track cloud-specific onboarding events and add performance optimizations for hosted cloud app (#6158)

## Summary
- Complete telemetry implementation with circular dependency fix
- Add build performance optimizations from main branch

### Telemetry Features
- ✅ Final telemetry events: signup opened, survey flow, email
verification
- ✅ Onboarding mode to prevent circular dependencies during app
initialization
- ✅ Lazy composable loading with dynamic imports for workflow tracking
- ✅ Survey responses as both event properties and persistent user
properties
- ✅ User identification method for onboarding flow
- ✅ Deferred user property setting until user is authenticated

### Performance Optimizations  
- ✅ Tree-shaking enabled to remove unused code
- ✅ Manual chunk splitting for vendor libraries (primevue, vue, tiptap,
chart.js, etc.)
- ✅ Enhanced esbuild minification with console removal in production
builds
- ✅ GENERATE_SOURCEMAP environment variable control
- ✅ Maintained ImportMap disabled for cloud performance

## Test plan
- [x] Telemetry events track correctly in Mixpanel
- [x] No circular dependency errors on app startup
- [x] Survey responses appear as both event properties and user
properties
- [x] Build optimizations reduce bundle size and improve loading
performance
- [x] All lint/format/typecheck passes

┆Issue is synchronized with this [Notion
page](https://www.notion.so/PR-6158-track-cloud-specific-onboarding-events-and-add-performance-optimizations-for-hosted-cloud-2926d73d365081a7b533dde249d5f734)
by [Unito](https://www.unito.io)

---------

Co-authored-by: Claude <noreply@anthropic.com>

src/schemas/apiSchema.ts

@@ -520,7 +520,9 @@ const zSettings = z.object({
   'main.sub.setting.name': z.any(),
   'single.setting': z.any(),
   'LiteGraph.Node.DefaultPadding': z.boolean(),
-  'LiteGraph.Pointer.TrackpadGestures': z.boolean()
+  'LiteGraph.Pointer.TrackpadGestures': z.boolean(),
+  /** Onboarding survey data */
+  onboarding_survey: z.record(z.unknown()).optional()
 })
 
 export type EmbeddingsResponse = z.infer<typeof zEmbeddingsResponse>