Update LiveObjects docs for protocol v6 ObjectOperation fields

The ably-js SDK now exposes per-action fields (mapCreate, mapSet,
mapRemove, counterCreate, counterInc, objectDelete) instead of the
combined mapOp/counterOp/map/counter properties. ObjectData also
exposes typed fields (boolean, bytes, number, string, json) instead
of a combined value field. See ably-js PR [1]

Resolves AIT-511

[1] ably/ably-js#2159

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: VeskeR

src/pages/docs/liveobjects/batch.mdx

@@ -256,7 +256,7 @@ When a batch operation is applied, the subscription is notified synchronously an
 ```javascript
 // Subscribe to the channel object
 myObject.subscribe(({ object, message }) => {
-  console.log("Update:", message?.operation.action, message?.operation?.mapOp.key);
+  console.log("Update:", message?.operation.action, message?.operation?.mapSet?.key);
 });
 
 // Perform a batch operation

src/pages/docs/liveobjects/concepts/operations.mdx

@@ -331,18 +331,24 @@ The `operation` field of an `ObjectMessage` contains an `ObjectOperation` with t
 |----------|-------------|
 | **action** | The operation action. One of: `'map.create'`, `'map.set'`, `'map.remove'`, `'counter.create'`, `'counter.inc'`, or `'object.delete'` |
 | **objectId** | The ID of the object the operation was applied to |
-| **mapOp** | Present for map mutation operations (`'map.set'`, `'map.remove'`). Contains `key` (the key that was modified) and optionally `data` (an `ObjectData` representing the value assigned to the key, present only for `'map.set'` operations) |
-| **counterOp** | Present for counter increment operations (`'counter.inc'`). Contains `amount` (the value added to the counter) |
-| **map** | Present for `'map.create'` operations. Defines the initial value of the map object with optional `semantics` (conflict-resolution strategy) and `entries` (initial key-value pairs) |
-| **counter** | Present for `'counter.create'` operations. Defines the initial value of the counter object with optional `count` (initial counter value) |
+| **mapCreate** | Present for `'map.create'` operations. Defines the initial value of the map object with `semantics` (conflict-resolution strategy) and `entries` (initial key-value pairs) |
+| **mapSet** | Present for `'map.set'` operations. Contains `key` (the key that was set) and `value` (an `ObjectData` representing the value assigned to the key) |
+| **mapRemove** | Present for `'map.remove'` operations. Contains `key` (the key that was removed) |
+| **counterCreate** | Present for `'counter.create'` operations. Defines the initial value of the counter object with `count` (initial counter value) |
+| **counterInc** | Present for `'counter.inc'` operations. Contains `number` (the value added to the counter) |
+| **objectDelete** | Present for `'object.delete'` operations. Empty object with no operation-specific data |
 
 #### ObjectData
 
-The `data` field in `mapOp` is an `ObjectData` object that represents the value assigned to a map key. It has the following properties:
+The `value` field in `mapSet` is an `ObjectData` object that represents the value assigned to a map key. Exactly one property is set, indicating the type of data:
 
 | Property | Description |
 |----------|-------------|
-| **objectId** | A reference to another object (such as a `LiveMap` or `LiveCounter`) by its object ID. Present when the value is a LiveObject |
-| **value** | A decoded primitive value (string, number, boolean, JSON-serializable object or array, or binary data). Present when the value is a primitive type |
+| **objectId** | A reference to another object (such as a `LiveMap` or `LiveCounter`) by its object ID |
+| **boolean** | A boolean leaf value |
+| **bytes** | A binary leaf value (`ArrayBuffer` in browser environments, or `Buffer` in Node.js) |
+| **number** | A numeric leaf value |
+| **string** | A string leaf value |
+| **json** | A parsed JSON object or array leaf value |
 
 </If>

src/pages/docs/liveobjects/concepts/path-object.mdx

@@ -536,15 +536,15 @@ When subscribed to a `LiveMap`, the `object` passed to the subscription is a `Pa
 // Subscribe to a LiveCounter stored in 'visits'
 const visits = myObject.get('visits');
 visits.subscribe(({ object, message }) => {
-  console.log('path:', object.path(), 'amount:', message?.operation?.counterOp?.amount);
+  console.log('path:', object.path(), 'number:', message?.operation?.counterInc?.number);
 });
 await visits.increment(5);
-// path: visits amount: 5
+// path: visits number: 5
 
 // Subscribe to a LiveMap stored in 'settings'
 const settings = myObject.get('settings');
 settings.subscribe(({ object, message }) => {
-  console.log('path:', object.path(), 'key:', message?.operation?.mapOp?.key);
+  console.log('path:', object.path(), 'key:', message?.operation?.mapSet?.key);
 });
 await settings.set('theme', 'dark');
 // path: settings key: theme
@@ -555,7 +555,7 @@ await settings.get('preferences').set('language', 'en');
 const settings = myObject.get('settings');
 const theme = settings.get('theme');
 theme.subscribe(({ object, message }) => {
-  console.log('path:', object.path(), 'key:', message?.operation?.mapOp?.key);
+  console.log('path:', object.path(), 'key:', message?.operation?.mapSet?.key);
 });
 await settings.set('theme', 'dark');
 // path: settings.theme key: theme