chore: add runner socket observability (#1546)

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Fixes RVT-4328
## Changes

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packages/infra/client/manager/src/ctx.rs

@@ -196,6 +196,8 @@ impl Ctx {
 					Ok((stream, _)) => {
 						let mut socket = tokio_tungstenite::accept_async(stream).await?;
 
+						tracing::info!("received new socket");
+
 						if let Some(runner) = &*self2.isolate_runner.read().await {
 							runner.attach_socket(socket).await?;
 						} else {
@@ -609,7 +611,7 @@ impl Ctx {
 		if let Some(isolate_runner_pid) = isolate_runner_pid {
 			let mut guard = self.isolate_runner.write().await;
 
-			tracing::info!(?isolate_runner_pid, "found old isolate runner");
+			tracing::info!(?isolate_runner_pid, "found existing isolate runner");
 
 			let runner = runner::Handle::from_pid(
 				runner::Comms::socket(),

packages/infra/client/manager/src/runner.rs

@@ -59,6 +59,8 @@ impl Handle {
 		match &self.comms {
 			Comms::Basic => bail!("attempt to attach socket to basic runner"),
 			Comms::Socket(tx) => {
+				tracing::info!(pid=?self.pid, "attaching socket");
+
 				let mut guard = tx.lock().await;
 
 				if guard.is_some() {
@@ -103,6 +105,8 @@ impl Handle {
 						}
 					}
 				});
+
+				tracing::info!(pid=?self.pid, "socket attached");
 			}
 		}