graphs website added

graphs/src/lib.rs

@@ -99,8 +99,21 @@ struct ColumnOutput {
     data_type: String,
 }
 
-#[tokio::main]
-async fn main() -> Result<(), Box<dyn std::error::Error>> {
+/// Starts the analytics web UI as a detached task on the current Tokio runtime.
+///
+/// The web UI still uses the existing gRPC endpoints for now. Keeping startup
+/// here limits the server integration to a single call until the application
+/// is switched to the in-process analytics runtime.
+pub fn spawn() -> tokio::task::JoinHandle<()> {
+    tokio::spawn(async {
+        if let Err(error) = serve().await {
+            eprintln!("Analytics graphs stopped: {error}");
+        }
+    })
+}
+
+/// Serves the analytics web UI until the task is cancelled or the listener fails.
+pub async fn serve() -> Result<(), Box<dyn std::error::Error + Send + Sync>> {
     let grpc_endpoint =
         env::var("ANALYTICS_GRPC_ENDPOINT").unwrap_or_else(|_| "http://[::1]:50051".into());
     let listen_address = env::var("LISTEN_ADDRESS")