fixup! ai-transport: add message per response doc

Author: GregHolmes

src/pages/docs/ai-transport/features/token-streaming/message-per-response.mdx

@@ -37,6 +37,25 @@ This approach is ideal when:
 You do not need to mark the message or token stream as completed; the final message will
 automatically have the full response with all tokens appended to it.
 
+## Setup
+
+Message append functionality requires the "Message annotations, updates, and deletes" [channel rule](/docs/channels#rules) enabled for your channel or [namespace](/docs/channels#namespaces). This rule automatically enables message persistence.
+
+To enable the channel rule:
+
+1. Go to the [Ably dashboard](https://www.ably.com/dashboard) and select your app.
+2. Navigate to the "Configuration" > "Rules" section from the left-hand navigation bar.
+3. Choose "Add new rule".
+4. Enter a channel name or namespace pattern (e.g. `ai:*` for all channels starting with `ai:`).
+5. Select the "Message annotations, updates, and deletes" rule from the list.
+6. Click "Create channel rule".
+
+The examples in this guide use the `ai:` namespace prefix, which assumes you have configured the rule for `ai:*`.
+
+### Message size limits
+
+Standard Ably message [size limits](/docs/platform/pricing/limits#message) apply to the complete concatenated message. The system validates size limits before accepting append operations. If appending a token would exceed the maximum message size, the append is rejected.
+
 ## Publishing tokens
 
 Publish tokens from a [Realtime](/docs/api/realtime-sdk) client, which maintains a
@@ -51,7 +70,7 @@ Use the [`get()`](/docs/api/realtime-sdk/channels#get) method to create or retri
 
 <Code>
 ```javascript
-const channel = realtime.channels.get('{{RANDOM_CHANNEL_NAME}}');
+const channel = realtime.channels.get('ai:{{RANDOM_CHANNEL_NAME}}');
 ```
 </Code>
 
@@ -193,7 +212,7 @@ await channel.subscribe((msg) => {
       responses.set(msg.serial, current + msg.data);
       break;
     case 'message.update':
-      // Replace entire response content (e.g. from rewind)
+      // Replace entire response content
       responses.set(msg.serial, msg.data);
       break;
   }
@@ -473,27 +492,3 @@ data would be simply:
 ```text
 Hello world!
 ```
-
-## Requirements and restrictions
-
-### Channel rule
-
-Message append functionality requires the "Message annotations, updates, and deletes" [channel
-rule](/docs/channels#rules) enabled for your channel or [namespace](/docs/channels#namespaces).
-This rule automatically enables messages persistence.
-
-Enabling the channel rule:
-
-1. Go to the [Ably dashboard](https://www.ably.com/dashboard) and select your app.
-2. Navigate to the "Configuration" > "Rules" section from the left-hand navigation bar.
-3. Choose "Add new rule".
-4. Enter a channel name or namespace pattern (e.g. `ai:*` for all channels starting with `ai:`).
-5. Select the "Message annotations, updates, and deletes" rule from the list.
-6. Click "Create channel rule".
-
-### Message size limits
-
-Standard Ably message [size limits](/docs/platform/pricing/limits#message) apply to the complete
-concatenated message. The system validates size limits before accepting append operations. If
-appending a token would exceed the maximum message size, the append is rejected.
-