When the MCP server and SessionStart hook both spawn a worker daemon
concurrently, one loses the bind race (EADDRINUSE / Bun's port-in-use
error). The loser now checks if the winner is healthy; if so, it logs
INFO and exits cleanly instead of logging a misleading ERROR on every
first session start.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Ousama Ben Younes