Enter on the System panel killed the TUI. It opens the dashboard URL with a
detached spawn, and a MISSING opener — xdg-open on any slim Linux container,
exactly where Fusion runs headless — is reported asynchronously as an 'error'
event rather than a synchronous throw. The try/catch around spawn never saw
it, so Node re-threw an 'error' with no listener and took the dashboard down.
The tunnel row now covers any tunnel, not just `pnpm dev --tunnel`:
SystemInfo.devTunnelUrl becomes tunnelUrl, fed by the dev wrapper's IPC
hand-off AND by the engine's TunnelProcessManager status subscription. An
operator's remote tunnel URL previously lived only in the Settings UI and
/remote/status, so a headless terminal could not read the address its own
Fusion was reachable at. A dev tunnel wins when both exist, and a stopped
tunnel clears the row rather than stranding a dead URL.
And the panel measures the row it draws. estimateSystemContentRows accounted
for URL and Token but not Tunnel, so a wrapping trycloudflare hostname was
squeezed out of the panel it had just been added to.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
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