Add note about casks needing admin rights on managed laptops

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

README.md

@@ -27,6 +27,16 @@ This installs all CLI tools, language version managers, databases, fonts, and ca
 
 If any formulae fail, you can skip them — they may not be needed on the new machine.
 
+**Managed work laptops:** Some casks require admin rights and will fail if your account is restricted by MDM. Request these through your company's IT or self-service portal:
+
+- **Docker Desktop** (`docker`)
+- **GPG Suite** (`gpg-suite`)
+- **Cursor** (`cursor`)
+- **iTerm2** (`iterm2`)
+- **ngrok** (`ngrok`)
+
+The shell configs guard against missing Docker, so everything else will still work.
+
 ## 4. Install Oh My Zsh
 
 ```bash