Initial commit

.github/steps/x-review.md

@@ -0,0 +1,20 @@
+## Review
+
+_Congratulations, you've completed this exercise!_
+
+You built and modernized a **multi-tier application** using GitHub Copilot agent mode.
+
+### What you accomplished
+
+- Prepared a Codespaces environment for a multi-tier application.
+- Implemented a React 19 presentation tier.
+- Built a Node.js + Express + TypeScript logic tier.
+- Connected a MongoDB data tier with Mongoose.
+- Practiced pull request summarization and review with Copilot.
+
+### What's next?
+
+- Add authentication and role-based authorization.
+- Add tests for API routes and React components.
+- Add CI checks for linting and automated tests.
+- Explore other GitHub Skills exercises.