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Bharat
707a82e88c
`Bun.spawn().unref()` only releases the child from Bun's event loop —
it does NOT call setsid(). The spawned bun server inherits the spawning
shell's process session. When the CLI runs inside a session-managed shell
that exits shortly after the CLI returns (Claude Code's per-command Bash
sandbox, Conductor, OpenClaw, CI step runners), the session leader's exit
sends SIGHUP to every PID in the session — killing the bun server and
its Chromium grandchildren within seconds of a successful `connect`.
Setting `BROWSE_PARENT_PID=0` (already done by the `connect` command and
pair-agent) disables the parent-process watchdog but does NOT save the
server here: SIGHUP from session teardown still reaps it.
Replace the macOS/Linux `Bun.spawn().unref()` with Node's
`child_process.spawn({ detached: true })`, which calls setsid() and
gives the server its own session leader role (PPID=1, STAT=Ss). This
mirrors the Windows path's rationale (PR #191 by @fqueiro) — same root
cause, different OS surface.
Verified on macOS in Conductor: pre-fix the server dies ~10–15s after
connect across separate Bash invocations; post-fix the same PID stays
alive (PPID=1, SESS=0, STAT=Ss) and responds to `status`/`goto`/
`snapshot` across many separate shell calls.
The `proc?.stderr` startup-error branch is removed since both platforms
now spawn with `stdio: 'ignore'`; both fall through to the on-disk
`browse-startup-error.log` written by `server.ts`'s start().catch.