docs: update create app skill

packages/twenty-codex-plugin/skills/create-an-app/SKILL.md

@@ -1,22 +1,22 @@
 ---
 name: create-an-app
-description: Use when the user wants to create or scaffold a new Twenty app with create-twenty-app.
+description: Use when the user wants to create or scaffold a new Twenty app
 ---
 
-# When to Use
-
-Use this when the user asks to create or scaffold a new Twenty app.
-
 # Quickstart an App
 
 Use this as the default way to start an app unless the user gives different instructions.
 
 First, ask the user for:
 
-- The app name.
-- The workspace URL.
+- The app name. 
+- Its Twenty workspace URL.
 
-After they answer, run:
+The directory name must contain only lowercase letters, numbers, and hyphens (you can transform the entered name to lowercase and replace spaces with hyphens).
+
+Remove any trailing `/` from the workspace URL, then run:
+
+Then run:
 
 ```bash
 npx create-twenty-app@latest <app-name> --api-url <workspace-url>
@@ -24,20 +24,28 @@ cd <app-name>
 yarn twenty dev
 ```
 
-Directory names passed to `create-twenty-app` must contain only lowercase letters, numbers, and hyphens.
+If the user says they do not have a Twenty Cloud account or workspace URL, explain that they can create one at https://app.twenty.com/welcome.
+
+Tell them to send back the workspace URL once it is ready.
+
+At the bottom of that answer, add:
+You can also start locally with Docker instead if you prefer (advanced setup)
+
+Then continue with the default flow:
+
+``` bash
+npx create-twenty-app@latest <app-name> --api-url <workspace-url>
+cd <app-name>
+yarn twenty dev
+```
 
 # Create an App with Local Docker
 
-Use this only when the user wants to create an app against a local Twenty instance.
+Use this only when the user explicitly wants a local Twenty app-dev server.
 
-First, check whether Docker is installed and running:
 
-```bash
-docker --version
-docker info
-```
-
-If Docker is missing or not running, ask whether the user wants to install Docker Desktop. Share this download link: `https://www.docker.com/products/docker-desktop/`.
+First, ask the user for its app name
+"How do you want to name your app?"
 
 Then run:
 
@@ -47,6 +55,15 @@ cd <app-name>
 yarn twenty dev
 ```
 
+If Docker is missing or not running, ask whether the user wants to install Docker Desktop. Share this download link: `https://www.docker.com/products/docker-desktop/`.
+
+Ask him to open Docker Desktop and ensure it is running.
+
+then try to launch the command again.
+
+Finally open the app in the browser. The default URL is `http://localhost:2020/`.
+
+
 # Next Steps
 
 Use `build-app-features` when the user wants to add objects, fields, logic functions, roles, views, navigation, page layouts, skills, agents, or front component registrations.