Pubsub Provider

Fallback pubsub relay and routing provider for Bitsocial operators.

Pubsub Provider runs a bundled Kubo node with Bitsocial-compatible pubsub, gateway, name-provider, and delegated HTTP routing endpoints. It is useful as a fallback path for clients that disable pure browser P2P, and it defaults to swarm port 4002 so it can run beside bitsocial-seeder on the same host.