docs(local-setup): improve clarity and flow of local setup guide

- Refine descriptions and instructions for API Server, Web Dashboard, and Mobile Client setup
- Enhance introductory text to better explain the purpose and benefits of local setup
- Reorder setup steps to align with recommended sequence for optimal user experience
- Update subheadings to more accurately reflect content of each section

Author: fulleni

src/content/docs/local-setup.mdx

@@ -1,30 +1,30 @@
 ---
 title: 'Getting Started: Local Setup'
-description: An overview of the local setup process for the entire Flutter News App ecosystem.
+description: A guide to setting up the complete Flutter News App toolkit on your local machine.
 ---
 
 import { Steps } from '@astrojs/starlight/components';
 
-Welcome to the local setup guide for the Flutter News App Toolkit. To get the full ecosystem running on your local machine, you will need to set up each of the three core components: the **API Server**, the **Web Dashboard**, and the **Mobile Client**.
+Welcome to the local setup guide. Following these steps will get the complete toolkit—the API Server, Web Dashboard, and Mobile Client—running on your local machine for evaluation and development.
 
-Follow the guides below in the recommended order to ensure a smooth setup process.
+We recommend following the guides in the order presented to ensure a smooth setup process.
 
 <Steps>
 1.  **Set Up the API Server**
 
-    Start by getting the backend running. The API server handles data, authentication, and configuration for both the dashboard and the mobile app.
+    Start by getting the backend running. The API server is the core of the toolkit, handling data and authentication for both clients.
 
     [Go to API Setup Guide &rarr;](/docs/api-server/local-setup/)
 
 2.  **Set Up the Web Dashboard**
 
-    Next, run the web-based administrative dashboard. You'll use this to manage content and configure the application.
+    Next, run the web-based administrative dashboard. You'll use this to manage content and see the system in action.
 
     [Go to Dashboard Setup Guide &rarr;](/docs/web-dashboard/local-setup/)
 
 3.  **Set Up the Mobile Client**
 
-    Finally, set up the Flutter mobile app for iOS and Android to see the end-user experience.
+    Finally, set up the Flutter mobile app for iOS and Android to explore the end-user experience.
 
     [Go to Mobile App Setup Guide &rarr;](/docs/mobile-client/local-setup/)
 </Steps>