Deploying a real-time chat feature is rarely as simple as "write the hub, start the connection, and ship it." After a full day of chasing ghosts in SignalR, JavaScript event handlers, and an nginx reverse proxy, here is what actually happened — and what finally made it work.

Over the past few days, I tackled a series of production issues on my .NET 10 Razor Pages blog while simultaneously adding SEO enhancements and user management features. What started as mysterious upload failures evolved into a deep dive into nginx configuration, deployment automation, Entity Framework Core migrations, and full-stack feature development. This post documents those challenges, solutions, and the lessons I learned along the way.