refactor README.md for improved clarity and detail; enhance project description, add sections on purpose and next steps

Author: cak

README.md

@@ -1,2 +1,22 @@
-# typeerror.github.io
-Landing page for TypeError.com
+# TypeError
+
+Open source cybersecurity engineering focused on practical tools, useful metrics, and data driven security work.
+
+TypeError spans application security, vulnerability management, security metrics, and security data science. The focus is operational clarity: building software and supporting material that help teams measure risk, explain tradeoffs, and make better decisions.
+
+This repository contains the static homepage for [typeerror.com](https://typeerror.com/).
+
+## What TypeError Is
+
+An open source security engineering effort for people who need security work to be understandable and usable in practice.
+
+The goal is not to publish noise. It is to build and share tools, experiments, and reference material that turn messy security inputs into clearer signal.
+
+## Where To Go Next
+
+- Website: [typeerror.com](https://typeerror.com/)
+- GitHub: [github.com/TypeError](https://github.com/TypeError)
+
+## License
+
+This project is available under the [MIT License](LICENSE).