feat: release 2.1.3

docs/guide/desktop.mdx

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+---
+title: Desktop Client
+description: Download and use the CowAgent desktop client (macOS / Windows)
+---
+
+CowAgent ships a ready-to-use desktop client with the Agent runtime bundled in — **no need to install Python or dependencies manually**. Just download, install, and run your local super AI assistant.
+
+## Download & Install
+
+<Card title="Go to the download page" icon="download" href="https://cowagent.ai/download/">
+  Download the macOS / Windows installer
+</Card>
+
+<Tabs>
+  <Tab title="macOS">
+    1. Open the [download page](https://cowagent.ai/download/) and pick the build for your chip:
+       - Apple Silicon (M1/M2/M3/M4): download the `arm64` build
+       - Intel: download the `x64` build
+    2. Open the downloaded `.dmg` and drag CowAgent into your Applications folder.
+    3. Launch CowAgent from Launchpad or Applications.
+  </Tab>
+  <Tab title="Windows">
+    1. Open the [download page](https://cowagent.ai/download/) and download the Windows installer (`.exe`).
+    2. Run the installer and follow the prompts (you can choose the install directory).
+    3. Launch CowAgent from the desktop or Start menu.
+  </Tab>
+</Tabs>
+
+## Auto Update
+
+The desktop client has built-in auto-update. When a new version is available it is detected automatically; you can also manually "Check for updates" from the menu in the bottom-left corner and upgrade with one click.
+
+## Desktop vs. Command-line Deployment
+
+- **Desktop client**: best for personal use on your own computer — works out of the box, GUI-based, auto-updating.
+- **Command-line deployment**: best for developers or long-running servers with more customization. See [Quick Start](/guide/quick-start).