Create twenty app improvements (#20688)

create-twenty-app updates:
- remove --example option
- sync --once when scaffolding an applicaiton
- rename --api-url option to --workspace-url
- create a standalone page when scaffolding an app
<img width="1494" height="765" alt="image"
src="https://github.com/user-attachments/assets/0e35ed0c-b0aa-466c-9f56-7939294fd2cf"
/>

---------

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packages/twenty-docs/developers/extend/apps/config/public-assets.mdx

@@ -22,7 +22,8 @@ Use the `getPublicAssetUrl` helper from `twenty-sdk` to get the full URL of a fi
 **In a logic function:**
 
 ```ts src/logic-functions/send-invoice.ts
-import { defineLogicFunction, getPublicAssetUrl } from 'twenty-sdk/define';
+import { defineLogicFunction } from 'twenty-sdk/define';
+import { getPublicAssetUrl } from 'twenty-sdk/utils';
 
 const handler = async (): Promise<any> => {
   const logoUrl = getPublicAssetUrl('logo.png');
@@ -47,12 +48,19 @@ export default defineLogicFunction({
 **In a front component:**
 
 ```tsx src/front-components/company-card.tsx
-import { defineFrontComponent, getPublicAssetUrl } from 'twenty-sdk/define';
+import { defineFrontComponent } from 'twenty-sdk/define';
+import { getPublicAssetUrl } from 'twenty-sdk/utils';
 
-export default defineFrontComponent(() => {
+const CompanyCard = () => {
   const logoUrl = getPublicAssetUrl('logo.png');
 
   return <img src={logoUrl} alt="App logo" />;
+};
+
+export default defineFrontComponent({
+  universalIdentifier: '...',
+  name: 'company-card',
+  component: CompanyCard,
 });
 ```
 

packages/twenty-docs/developers/extend/apps/getting-started/quick-start.mdx

@@ -138,20 +138,6 @@ Both modes need an authenticated remote.
 | `--debounceMs <ms>` | Set the file-change debounce delay in milliseconds (default: `2000`). |
 | `--verbose` / `--debug` | Show detailed build logs, sync requests, and error traces. |
 
----
-
-## Starting from an example
-
-Use `--example` to start with a more complete project (custom objects, fields, logic functions, front components):
-
-```bash filename="Terminal"
-npx create-twenty-app@latest my-twenty-app --example postcard
-```
-
-Examples live in [twenty-apps/examples](https://github.com/twentyhq/twenty/tree/main/packages/twenty-apps/examples). You can also scaffold individual entities into an existing project with `yarn twenty add` — see [Scaffolding](/developers/extend/apps/getting-started/scaffolding).
-
----
-
 ## What you can build
 
 Apps are composed of **entities** — each defined as a TypeScript file with a single `export default`:

packages/twenty-docs/developers/extend/apps/layout/front-components.mdx

@@ -390,7 +390,8 @@ export default defineFrontComponent({
 Front components can access files from the app's `public/` directory using `getPublicAssetUrl`:
 
 ```tsx
-import { defineFrontComponent, getPublicAssetUrl } from 'twenty-sdk/define';
+import { defineFrontComponent } from 'twenty-sdk/define';
+import { getPublicAssetUrl } from 'twenty-sdk/utils';
 
 const Logo = () => <img src={getPublicAssetUrl('logo.png')} alt="Logo" />;