init: scaffold from k-template with postgres + worker

crates/worker/src/main.rs

@@ -0,0 +1,34 @@
+use std::sync::Arc;
+use std::time::Duration;
+use tracing::info;
+
+mod config;
+mod job;
+mod jobs;
+mod runner;
+
+use jobs::ExampleJob;
+use runner::JobRunner;
+
+#[tokio::main]
+async fn main() -> anyhow::Result<()> {
+    tracing_subscriber::fmt()
+        .with_env_filter(
+            tracing_subscriber::EnvFilter::from_default_env()
+                .add_directive("worker=info".parse()?),
+        )
+        .init();
+
+    let config = config::WorkerConfig::from_env();
+    info!("Worker starting");
+
+    let _pool = adapters_sqlite::connect(&config.database_url).await?;
+    adapters_sqlite::run_migrations(&_pool).await?;
+
+    let interval = Duration::from_secs(config.example_job_interval_secs);
+    let runner = JobRunner::new().register(Arc::new(ExampleJob), interval);
+
+    info!("Worker running");
+    runner.run().await;
+    Ok(())
+}