Notebook Text Entry

I’m looking for a lightweight web-based notebook that I can open in any modern browser on my Windows machine. The goal is straightforward: create, edit and save plain-text notes, then find what I’ve written instantly with an in-app search bar. I don’t need rich-text formatting or cloud sync right now—speed and simplicity are the priorities.

You’re free to choose the stack (a small Flask, Node, or PHP setup is fine) as long as it installs easily and runs locally on Windows without extra licensing costs. A single-user scenario is all I need, so a basic file or SQLite store should be enough.

Acceptance criteria
• Clean note list and editor views
• Case-insensitive, real-time search across all saved notes
• Data persists after browser refresh or system restart
• Clear setup guide so I can launch the app myself

Please include commented source code and a brief README explaining how to start the server and where the notes are stored.