feat: update gateway connection to use token authentication, origin headers, and web client identification

feat: update connection handshake parameters with protocol versioning and client metadata

refactor: remove automatic gateway token injection and redirect logic from Control UI

feat: implement auth failure cooldowns, add loopback trusted proxies, and enhance health server status reporting

feat: migrate OPENCLAW_VERSION to build-time argument and hardcode health server ports

refactor: migrate dashboard to /dashboard and implement internal reverse proxy for gateway traffic

feat: enable iframe embedding by injecting a preload script to strip security headers and update CSP policies

feat: implement wa-guardian for automated WhatsApp pairing and add Control UI shortcut to dashboard

feat: implement DNS-over-HTTPS fallback for network requests and add a web dashboard to the health server.

Initial commit