share-server-links

# Share local server links via bb connect When you start an HTTP server the user should open, give them a connect share URL — not a localhost URL. Shares work from threads running on any enrolled host, and the command resolves the thread's host automatically. 1. Check pairing: run `bb connect status --json`. If not paired / not connected, give the localhost URL and mention that `bb connect` enables remote URLs once paired from the getbb.app dashboard. 2. From the thread that started the HTTP server, run `bb connect expose <port>`. It prints that host's share URL. Use `--host <name-or-id>` only when you intentionally need another enrolled host; outside a thread, sharing defaults to the machine running the bb server. 3. Give the returned URL to the user as a markdown link. It works for viewers who have the owner's getbb.app session; it is not a public internet link. 4. When the server stops, run `bb connect unexpose <port>` from the same thread (or with the same `--host`) so the share is cleaned up. Use `bb connect shares [--host <name-or-id>]` to inspect that host's shares. Server-host shares use `https://<server-label>--<port>.<base-domain>` through the server tunnel. Other enrolled hosts use `https://<machine-label>--<port>.<base-domain>` through their daemon. If a machine was not enrolled through Connect, expose fails with instructions to remove and re-add it under Settings > Machines.