docs: add launch assets + fix README brew install path

- Add early access guide for onboarding initial developers
- Add demo animation (HTML) with keyboard ASMR audio for announcement video
- Fix README Homebrew install: was `brew tap nodeops-app/tap` (wrong tap),
  now `brew install NodeOps-app/createos/createos` (auto-taps correctly)

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: 2 people

README.md

@@ -23,8 +23,7 @@ curl -sfL https://raw.githubusercontent.com/NodeOps-app/createos-cli/main/instal
 ### macOS & Linux — Homebrew
 
 ```sh
-brew tap nodeops-app/tap
-brew install createos
+brew install NodeOps-app/createos/createos
 ```
 
 ### Nightly