feat: wire NATS event publisher into bootstrap + worker

- Both binaries connect to NATS on startup, ensure JetStream stream
- EventPublisherAdapter<NatsTransport> replaces LogEventPublisher
- nats_url config with default nats://localhost:4222
- Deleted bootstrap's LogEventPublisher (no longer needed)

crates/bootstrap/Cargo.toml

@@ -12,7 +12,10 @@ domain          = { workspace = true }
 application     = { workspace = true }
 adapters-auth   = { workspace = true }
 
-adapters-storage = { workspace = true, features = ["s3"] }
+adapters-storage   = { workspace = true, features = ["s3"] }
+adapters-nats      = { workspace = true }
+event-transport    = { workspace = true }
+async-nats         = { workspace = true }
 
 presentation    = { workspace = true }