On Windows the daemon derives a TCP port from the session name via a
djb2 hash (e.g. "default" → 50838). On many machines this port falls
inside Hyper-V's excluded port range (winnat), causing EACCES on bind
and preventing the daemon from starting.
Changes:
- daemon: try the hash-derived port first; on failure, bind to port 0
(OS-assigned) and write the actual port to the .port file
- client (connection.rs, stream.rs): read the .port file to discover the
daemon's actual port, falling back to the hash if the file is absent
- run_daemon: guard .sock file operations with #[cfg(unix)] and add
.port file cleanup for #[cfg(windows)]
Fixes#390
Co-authored-by: ctate <366502+ctate@users.noreply.github.com>
