Make ensureWorkerRunning async with health checks

Co-authored-by: thedotmack <683968+thedotmack@users.noreply.github.com>

src/hooks/save-hook.ts

@@ -39,7 +39,7 @@ async function saveHook(input?: PostToolUseInput): Promise<void> {
   }
 
   // Ensure worker is running
-  ensureWorkerRunning();
+  await ensureWorkerRunning();
 
   const db = new SessionStore();