add intro to readme

README.md

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-# Go Shelley Template
+# zensky
 
-This is a starter template for building Go web applications on exe.dev. It demonstrates end-to-end usage including HTTP handlers, authentication, database integration, and deployment.
+I came up with the idea of this web app because I wanted to be able to post something without getting sucked into the abyss of endless doomscrolling which I am *very* prone to doing.
 
-Use this as a foundation to build your own service.
+zensky only lets you write posts and hit send. You can read posts that you have *just* sent out on zensky. That's it. You can't read any other posts.
+
+The whole thing was vibe coded using Shelley, the built-in AI chatbot in an exe.dev VM. I plan to use this to understand Go project structure. I haven't audited shit -- not even the build and run instructions below this paragraph -- so just be aware of that. Afaik Shelly did pretty good though and it both amazes and scares the shit out of me that AI agents are capable of this.
 
 ## Building and Running