docs: add comprehensive KV library documentation and update client/co…

src/content/docs/en/pages/devtools/azion-lib/usage/client.mdx

@@ -11,7 +11,7 @@ menu_namespace: libMenu
 
 import LinkButton from 'azion-webkit/linkbutton'
 
-The Azion **Client** interface provides a unified interface to interact with all products and services. You can use the `client` to access and manage all products and functionalities across Storage, SQL, Purge, and more. 
+The Azion **Client** interface provides a unified interface to interact with all products and services. You can use the `client` to access and manage all products and functionalities across Storage, SQL, Purge, KV, Domains, and more. 
 
 When instantiating a client, you can define configurations such as `token` and `debug` explicitly as parameters. You can then interact with Azion functionalities directly through the `client`, in a simplified and centralized way.
 
@@ -103,3 +103,50 @@ if (data) {
 ```
 
 This flexibility allows you to either manage everything through the client for simplicity or call specific functions from each package with more control over environment configurations.
+
+---
+
+## Available modules
+
+The Azion Client provides access to the following modules:
+
+| Module | Description |
+|--------|-------------|
+| `storage` | Manage buckets and objects in Object Storage. |
+| `sql` | Create and query SQL databases. |
+| `purge` | Purge cache by URL, cache key, or wildcard. |
+| `domains` | Manage domains and their configurations. |
+| `kv` | Interact with KV Store using a Redis-like API. |
+
+### Using the KV module
+
+The `kv` module provides a Redis-like interface for key-value operations:
+
+```typescript
+import { createClient } from 'azion';
+
+const client = createClient({ token: 'your-api-token', debug: true });
+
+// Access the KV module
+const kvClient = await client.kv
+  .on('error', (err) => console.error('KV Error:', err))
+  .connect();
+
+// Store a value
+await kvClient.set('user:123', JSON.stringify({ name: 'John' }), {
+  expiration: { type: 'EX', value: 3600 }, // 1 hour TTL
+});
+
+// Retrieve a value
+const userData = await kvClient.get('user:123');
+console.log('User data:', userData);
+
+// Hash operations
+await kvClient.hSet('config', 'theme', 'dark');
+const config = await kvClient.hGetAll('config');
+
+// Disconnect when done
+await kvClient.disconnect();
+```
+
+For more details on KV operations, see the [KV library documentation](/en/documentation/products/azion-lib/kv/).