I'll help you create an achievement tracking app with year selection and rich text editing using Quill. Let me first understand the current codebase structure.
I've created your achievement tracking app with two main panes as requested. The left pane allows you to select years (from 2020 to current year), and the right pane features a rich text editor powered by Quill. The app automatically saves your content as you type and persists everything in localStorage, so your achievements are preserved between sessions. Years with existing content are marked with a dot indicator for easy identification.