await import('libsodium-wrappers') returns the namespace object in
bun, not the sodium API. randombytes_buf et al. live on .default.
Without this, every topic_create on the deployed broker errored
with 'sodium.randombytes_buf is not a function' and the WS handler
silently dropped — CLI saw a 5s timeout.
Confirmed via broker docker logs:
warn ws message error: sodium.randombytes_buf is not a function
Same destructure pattern as crypto.ts (which uses the synchronous
default import).
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>