docs(TSP-1125): add Edge region selection docs for Chat app

admin/project-management/switch-projects.mdx

@@ -35,3 +35,19 @@ You can also use **Cmd + K** (Mac) or **Ctrl + K** (Windows) to quickly switch p
 </Tip>
 
 When you switch projects in Chat, you'll have access to all agents available in that project.
+
+## Selecting an Edge region in Chat
+
+If your project is in an Edge region, you can select it from the project switcher in the Chat browser extension and desktop app. Edge regions appear in the region picker labeled with **(Edge)** to distinguish them from standard regions.
+
+The following Edge regions are available:
+
+- **US Edge**
+- **AU Edge**
+- **EU Edge**
+
+To select an Edge region:
+
+1. Open the project switcher in the Chat browser extension or desktop app
+2. Look for your project listed under a region name ending in **(Edge)**
+3. Select it to switch to that project

get-started/chat/introduction.mdx

@@ -13,12 +13,12 @@
   Start chatting now at chat.relevanceai.com — works on desktop and mobile
 </Card>
 
 ## Using different LLMs in Chat
 
 You can select the LLM you want to use in Chat:
 
 <div style={{ width:"100%",position:"relative","padding-top":"56.75%"}}>
 <iframe src="https://app.supademo.com/embed/cmfgfi5x0bz4239ozw2fj4het" frameBorder="0" title="How to set up Google Drive as a source of Knowledge" allow="clipboard-write; fullscreen" webkitAllowFullscreen="true" mozAllowFullscreen="true" allowFullscreen style={{ position:"absolute",top:0,left:0,width:"100%",height:"100%",border:"3px solid #5E43CE",borderRadius:"10px" }} />
 </div>
 
 1. Click the name of the LLM you're currently on (or Auto if you've selected 'Auto' previously) in the top right of Chat
@@ -105,7 +105,7 @@
 Save any prompt from your Chat conversations to make it available to all users in your project through the @ menu.
 
 <div style={{ width:"100%",position:"relative","padding-top":"56.75%" }}>
 <iframe src="https://app.supademo.com/embed/cminu37g60bizgxadmuzniah7" frameBorder="0" title="How to save a prompt" allow="clipboard-write; fullscreen" webkitAllowFullscreen="true" mozAllowFullscreen="true" allowFullscreen style={{ position:"absolute",top:0,left:0,width:"100%",height:"100%",border:"3px solid #5E43CE",borderRadius:"10px" }} />
 </div>
 
 1. Start a new conversation and enter the prompt you want to save
@@ -200,7 +200,7 @@
 
 ## Supported file types in Chat
 
 Chat empowers you to work with a wide range of file types, both for input and output. Upload documents, images, and data files to provide context to your conversations, and generate new files based on your Agent's responses or built-in Agent outputs. Whether you're analyzing spreadsheets, processing PDFs, or creating presentations, Chat seamlessly handles file operations across different model providers.
 
 Here's a comprehensive breakdown of supported file types by model provider:
 
@@ -334,7 +334,7 @@
         To monitor your Chat credit usage, navigate to **Settings > Plan & Billing** to see a detailed breakdown of your credit expenses. Learn more about [Plans and credits](/admin/subscriptions/plans).
         </Tip>
     </Accordion>
     <Accordion title="Can I use different LLMs in Chat?">
     Yes, you can select the LLM you want to use in Chat by following these steps:
 
     1. Click on the cog icon in the top right of your screen
@@ -357,6 +357,11 @@
 
     For more details, see [Learn how to switch projects in Chat](/admin/project-management/switch-projects#switching-projects-in-chat).
     </Accordion>
+    <Accordion title="What are Edge regions and how do I select them?">
+    Edge regions (US Edge, AU Edge, and EU Edge) are available in the Chat browser extension and desktop app. If your project is in an Edge region, it will appear in the project switcher labeled with **(Edge)** — for example, **US (Edge)**.
+
+    To select an Edge region project, open the project switcher and look for the **(Edge)** label next to the region name. For detailed instructions, see [how to switch projects in Chat](/admin/project-management/switch-projects#selecting-an-edge-region-in-chat).
+    </Accordion>
     <Accordion title="What keyboard shortcuts are available in Chat?">
     Chat supports the following keyboard shortcuts: