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/src/config.rs

@@ -3,6 +3,7 @@ pub struct Config {
     pub host: String,
     pub port: u16,
     pub database_url: String,
+    pub nats_url: String,
     pub jwt_secret: String,
     pub cors_allowed_origins: Vec<String>,
 }
@@ -17,6 +18,8 @@ impl Config {
                 .and_then(|p| p.parse().ok())
                 .unwrap_or(3000),
             database_url: std::env::var("DATABASE_URL").expect("DATABASE_URL must be set"),
+            nats_url: std::env::var("NATS_URL")
+                .unwrap_or_else(|_| "nats://localhost:4222".to_string()),
             jwt_secret: std::env::var("JWT_SECRET").expect("JWT_SECRET must be set"),
             cors_allowed_origins: std::env::var("CORS_ALLOWED_ORIGINS")
                 .unwrap_or_else(|_| "http://localhost:3000".to_string())

crates/bootstrap/src/factory.rs

@@ -55,13 +55,15 @@ use presentation::{
 };
 
 use crate::config::Config;
-use crate::log_event_publisher::LogEventPublisher;
 use crate::log_sidecar_writer::LogSidecarWriter;
 
 pub async fn build_app(config: &Config) -> Result<Router> {
     let pool = connect(&config.database_url).await?;
     run_migrations(&pool).await?;
 
+    let nats_client = async_nats::connect(&config.nats_url).await?;
+    adapters_nats::ensure_stream(&nats_client).await?;
+
     // Identity
     let user_repo = Arc::new(PostgresUserRepository::new(pool.clone()));
     let hasher = Arc::new(BcryptPasswordHasher);
@@ -91,7 +93,9 @@ pub async fn build_app(config: &Config) -> Result<Router> {
     let batch_repo = Arc::new(PostgresJobBatchRepository::new(pool.clone()));
     let plugin_repo = Arc::new(PostgresPluginRepository::new(pool.clone()));
     let pipeline_repo = Arc::new(PostgresPipelineRepository::new(pool.clone()));
-    let event_publisher: Arc<LogEventPublisher> = Arc::new(LogEventPublisher);
+    let transport = adapters_nats::NatsTransport::new(nats_client);
+    let event_publisher: Arc<dyn domain::ports::EventPublisher> =
+        Arc::new(event_transport::EventPublisherAdapter::new(transport));
     let sidecar_writer: Arc<LogSidecarWriter> = Arc::new(LogSidecarWriter);
 
     // File storage

crates/bootstrap/src/lib.rs

@@ -1,4 +1,3 @@
 pub mod config;
 pub mod factory;
-pub mod log_event_publisher;
 pub mod log_sidecar_writer;

crates/bootstrap/src/log_event_publisher.rs

@@ -1,12 +0,0 @@
-use async_trait::async_trait;
-use domain::{errors::DomainError, events::DomainEvent, ports::EventPublisher};
-
-pub struct LogEventPublisher;
-
-#[async_trait]
-impl EventPublisher for LogEventPublisher {
-    async fn publish(&self, event: &DomainEvent) -> Result<(), DomainError> {
-        tracing::info!(?event, "domain event published");
-        Ok(())
-    }
-}

crates/bootstrap/src/main.rs

@@ -3,7 +3,6 @@ use tracing::info;
 
 mod config;
 mod factory;
-mod log_event_publisher;
 mod log_sidecar_writer;
 
 #[tokio::main]