Add Playwright E2E testing

Add hybrid mode implementation guide

Add build scaling strategy documentation

Migrate from npm to Bun

Add testing workflow documentation and npm scripts

Update workflow to use cyberbase-testing project name

Add custom domains documentation

Add project creation step for first-time Cloudflare Pages deploy

Fix workflow to deploy on manual trigger

Move GitHub Actions workflow to repo root

Initial project setup: Astro + Starlight with PARA docs

Initial commit