Playwright connection supervision tree.

Supports two transport modes:

• Local Port (default): Spawns Node.js playwright driver
• WebSocket: Connects to remote Playwright server

Options

• :ws_endpoint - WebSocket URL (e.g. ws://localhost:3000?browser=chromium). If provided, uses WebSocket transport. Otherwise uses local Port. If no browser param is provided, chromium is used by default.
• :executable - Path to playwright CLI (only for Port transport)
• :timeout - Connection timeout
• :js_logger - Module for logging JS console messages
• :name - Optional name for this supervisor instance. Defaults to PlaywrightEx.Supervisor. Use this to run multiple independent Playwright connections (e.g., one with PortTransport, another with WebSocketTransport). The name is used to derive child process names.

Limitations of WebSocket connection to remote server

• Single browser type - only the one you set via ws_endpoint (the browser type passed to PlaywrightEx.launch_browser/2 is ignored)