docs: clarify WARP daemon requirement, offer Homebrew cask option

- Explain that you need the daemon, not the GUI
- Offer Homebrew cask as the recommended option for CLI users
- Keep App Store link as alternative
- Update formula caveat to reflect both installation options

Co-Authored-By: Claude Haiku 4.5 <noreply@anthropic.com>

Author: ashu17706

README.md

@@ -42,12 +42,19 @@ The official WARP app is designed for people who click menus. If you live in the
 
 ## 30-Second Setup
 
-### 1. Install WARP First
+### 1. Install WARP Daemon
+You need the WARP daemon (the background service). Choose one:
+
+**Option A: Homebrew (recommended for CLI users)**
 ```bash
-# Download from App Store (free)
-https://apps.apple.com/app/cloudflare-warp/id1423210915
+brew install --cask cloudflare-warp
 ```
 
+**Option B: App Store**
+Visit [App Store](https://apps.apple.com/app/cloudflare-warp/id1423210915) and download for free.
+
+*Note: You need the daemon, not the GUI. Either method installs it.*
+
 ### 2. Install warp-cli
 ```bash
 brew tap zero8dotdev/tools