Building orchat - A Single File .NET Client for OpenRouter

Overview ☀ OpenRouter emailed me to say my credits were about to expire. I had bought $10 in March 2024, spent seven pence of it, and forgotten the account existed. Credits older than twelve months expire if the account sees no activity, and running any inference resets the clock. Easy enough. Send a request, keep the money. Except I could not prove it worked. The dashboard rounds every figure to…