test(hub): let the cast relay script end by itself

test_cast_subtitles.py's node script called process.exit(0) right after
relay.stop(), with fetch's sockets still closing. Node 24 on Windows aborted
there on a libuv assertion (UV_HANDLE_CLOSING, src\win\async.c) two runs in
three, after printing its results, so the module fixture failed and seven
tests errored at setup. Nothing is left once the relay stops: the script
ends by itself, in the same 0.1 s.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

1 files changed, 3 insertions, 1 deletions

diff --git a/packages/meshbay-hub/tests/test_cast_subtitles.py b/packages/meshbay-hub/tests/test_cast_subtitles.py
index bdc279b..6601337 100644
--- a/packages/meshbay-hub/tests/test_cast_subtitles.py
+++ b/packages/meshbay-hub/tests/test_cast_subtitles.py
@@ -249,7 +249,9 @@ const CastRelay = require(process.argv[2]);
 
   await relay.stop();
   console.log(JSON.stringify(out));
-  process.exit(0);
+  // No process.exit(0): with fetch's sockets still closing, Node 24 on Windows
+  // aborted on a libuv assertion (UV_HANDLE_CLOSING, src\\win\\async.c) two
+  // runs in three. Nothing is left once the relay stops, so it ends by itself.
 })().catch((err) => { console.error(err); process.exit(1); });
 """