docs: add Homebrew installation to docs

Author: joshrotenberg

docs/src/getting-started/installation.md

@@ -1,5 +1,28 @@
 # Installation
 
+## Homebrew (macOS/Linux)
+
+The easiest way to install on macOS or Linux:
+
+```bash
+# Install directly (automatically taps the repository)
+brew install joshrotenberg/brew/redisctl
+
+# Or tap first, then install
+brew tap joshrotenberg/brew
+brew install redisctl
+```
+
+This will:
+- Install the latest stable version
+- Set up the binary in your PATH
+- Enable automatic updates via `brew upgrade`
+
+To upgrade to the latest version:
+```bash
+brew upgrade redisctl
+```
+
 ## Binary Releases
 
 Download the latest release for your platform from the [GitHub releases page](https://github.com/joshrotenberg/redisctl/releases).

docs/src/introduction.md

@@ -17,6 +17,16 @@ The CLI provides three layers of interaction:
 2. **Human-Friendly Commands** - Typed wrappers around common operations  
 3. **Workflows** - Multi-step orchestrated operations (coming soon)
 
+## Installation
+
+Get started quickly with Homebrew:
+
+```bash
+brew install joshrotenberg/brew/redisctl
+```
+
+Or see [Installation](./getting-started/installation.md) for other methods.
+
 ## Quick Example
 
 ```bash