docs: rephrase CLI installation and usage for clarity

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Author: umair-ably

src/pages/docs/platform/tools/cli.mdx

@@ -27,7 +27,7 @@ npx -p @ably/cli ably init
 
 [`ably init`](/docs/cli/init) installs the Ably CLI globally, authenticates you, and installs the Ably [Agent Skills](https://github.com/ably/agent-skills) into any AI coding tools it detects on your machine, such as Claude Code, Cursor, VS Code, and Windsurf.
 
-If you'd rather install the CLI yourself before running `init`, the Ably CLI is published to NPM:
+To install the CLI manually first, use npm and then run `ably init`:
 
 <Code>
 ```shell
@@ -37,20 +37,18 @@ ably init
 </Code>
 
 <Aside data-type='note'>
-Alternatively, you can skip interactive `ably init` or `ably login` commands by using [environment variables](/docs/cli/env) to authenticate directly in scripts and CI/CD pipelines.
+Alternatively, you can skip the interactive `ably init` and `ably login` commands by using [environment variables](/docs/cli/env) to authenticate directly in scripts and CI/CD pipelines.
 </Aside>
 
 ## Usage
 
-`ably init` authenticates using an [OAuth Device Authorization](https://datatracker.ietf.org/doc/html/rfc8628) flow: the CLI displays an authorization code and opens your browser to approve it. Once approved, the CLI receives an [access token](/docs/platform/account/access-tokens) that is stored locally and refreshed automatically, so there is no manual token management.
+During `ably init`, the CLI authenticates using an [OAuth Device Authorization](https://datatracker.ietf.org/doc/html/rfc8628) flow: it displays an authorization code and opens your browser to approve it. Once approved, the CLI receives an [access token](/docs/platform/account/access-tokens) that is stored locally and refreshed automatically, so there is no manual token management.
 
 If you only need to authenticate, without installing Agent Skills, run [`ably login`](/docs/cli/login) instead.
 
-After you have successfully authenticated and chosen your app and API key, you're ready to interact with Ably resources directly from your terminal.
+After authenticating and selecting your app and API key, you can interact with Ably resources directly from your terminal.
 
-For example, open two terminal instances and subscribe to one, and publish messages in the other:
-
-To subscribe:
+For example, open two terminal windows. In the first, subscribe to a channel:
 
 <Code>
 ```shell
@@ -59,7 +57,7 @@ ably channels subscribe channel-1
 ```
 </Code>
 
-To publish:
+In the second, publish messages to the same channel:
 
 <Code>
 ```shell
@@ -75,7 +73,7 @@ ably channels publish --count 5 channel-1 "Message number {{.Count}}"
 ```
 </Code>
 
-For a list of all available commands, run:
+To list all available commands, run:
 
 <Code>
 ```shell