Patch Changes

• #310 3c03587 Thanks @whoiskatrin! - Add terminal support for browser-based terminal UIs.

  Build interactive terminal experiences by connecting xterm.js to container PTYs via WebSocket. Terminals reconnect automatically with output history preserved, and each session gets its own isolated terminal.

  // Proxy WebSocket to container terminal
  return sandbox.terminal(request, { cols: 80, rows: 24 });
  
  // Multiple isolated terminals in the same sandbox
  const session = await sandbox.getSession('dev');
  return session.terminal(request);
  

  Also exports @cloudflare/sandbox/xterm with a SandboxAddon for xterm.js — handles WebSocket connection, reconnection with exponential backoff, and terminal resize forwarding.

  import { SandboxAddon } from '@cloudflare/sandbox/xterm';
  
  const addon = new SandboxAddon({
    getWebSocketUrl: ({ sandboxId, origin }) =>
      `${origin}/ws/terminal?id=${sandboxId}`
  });
  terminal.loadAddon(addon);
  addon.connect({ sandboxId: 'my-sandbox' });