The tunnel target was resolved from PORT/4040 before anything bound, but an
occupied port makes the dashboard silently rebind to an ephemeral one
(server.listen(0) on EADDRINUSE). With a normal Fusion already running on
4040, `pnpm dev --tunnel` therefore published THAT instance under a
dev-looking URL while the dev server sat unreachable on a random port.
The dashboard now reports the port it actually bound to the dev supervisor
over IPC, and the wrapper tunnels that:
- IPC is enabled whenever --tunnel is set, not only in watch mode; a plain
tunnel run previously had no channel at all.
- The tunnel waits for the report (60s cap, then falls back to the configured
port with a warning), so it also cannot come up against a port nothing is
serving yet.
- A mismatch is logged instead of silent.
- A reported port is treated as the dashboard whatever its number, so the
banner keeps printing the bearer token; without that, the ephemeral case
would classify the dev dashboard as a foreign port and drop it.
- An explicit --tunnel=PORT names a target the dev child knows nothing about,
so it never waits and is still compared against the configured port.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
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