chore: full stack stability and migration fixes, plus react UI progress

control-plane-api/src/main.rs

@@ -30,7 +30,15 @@ async fn main() -> anyhow::Result<()> {
     let listener = tokio::net::TcpListener::bind("0.0.0.0:8001").await?;
     tracing::info!("Control Plane API listening on http://0.0.0.0:8001");
 
-    axum::serve(listener, app).await?;
+    let shutdown = async {
+        tokio::signal::ctrl_c().await.ok();
+        tracing::info!("Shutdown signal received, draining control plane connections...");
+    };
 
+    axum::serve(listener, app)
+        .with_graceful_shutdown(shutdown)
+        .await?;
+
+    tracing::info!("Control Plane shut down cleanly.");
     Ok(())
 }