You're a teacher or office worker who keeps running out of whiteboard markers mid-session — always at the worst possible moment. Build a tiny single-page app that lets you track a small collection of whiteboard markers.

Each marker has a **color** (e.g. red, blue, black, green), a **condition** selected from three states — Fresh, Fading, or Dead — and a **notes** field for quick remarks (e.g. "cap missing", "smells weird").

The app must let you:
- **Add** a new marker with its color name, condition, and optional note
- **Update** any marker's condition with a single click or tap (cycle through Fresh → Fading → Dead)
- **Delete** a marker when it's tossed in the bin
- Display all markers in a clean visual list, each showing a colored dot or badge matching its named color, the current condition with a distinct visual indicator (e.g. green/yellow/red), and the note

No backend, no auth — all data lives in the page (in-memory or localStorage). The whole thing fits on one screen with no routing needed.