After socket.setEncoding(enc), socket.pipe(destination) wrote the raw
bytes it read to the destination. It now writes the decoded strings, as
Node's pipe writes each string chunk: the destination receives their
UTF-8 bytes, and a partial character the decoder holds at EOF is written
before the destination ends.
tests/node-parallel/run.mjs runs each job's files with its own
TEST_THREAD_ID, as Node's test runner does, so test/common/tmpdir gives
concurrent files different directories instead of one shared .tmp.0.
A run that a signal ends has a null exit code, so the runner recorded a
pass when Node and the executable ended by different signals, or when one
ended by a signal and the other with an exit code compared as null. The
verdict now compares both the exit code and the signal (verdict.mjs), and
records Node's signal in nodeExit as it does for the executable.
A relative --node path also made the minimal lane's fixtures symlink
relative to the copied tree, where it does not resolve. The checkout path
is now resolved first.
tests/harness/node-parallel-runner.test.ts covers both: the termination
comparison, and a relative --node path whose fixtures resolve from the
minimal tree.