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82945cd81e
Every started node holds ~3 file descriptors in the server's table (pidfd + stdout/stderr pipes per child process), so a few hundred started nodes exhaust the default 1024 soft limit and the uBridge version-check subprocess fails with EMFILE ('Too many open files: /dev/null').
At startup, best-effort raise RLIMIT_NOFILE to 65535 (capped by the hard limit); failures are logged, never fatal. Runs before daemonize() so the daemon inherits the raised limit. Linux-only, matching the platform target.