I Built a Markdown Editor in a Weekend Because Every Other One Annoyed Me

I didn't plan to build a markdown editor this weekend. I was working on something else, and somewhere in the middle of it I opened my markdown editor to take notes and my annoyance with every markdown editor I've tried finally reached a head. Not annoyed in the "this is broken" sense. Annoyed in the "why does this app need a cloud account and fourteen features I'll never use" sense. Every alternative I'd tried had the same problem in different packaging — too expensive, too bloated, or too clever. So I opened Claude Code and started building one. What I built Three panes. File browser on the left, editor in the middle, live preview on the right. Tabs for multiple open files. Session restore — close the app, reopen it, everything's still there. Dark mode. Search and replace. A formatting toolbar for the things I always forget the syntax for. That's it. No cloud sync, no collaboration, no plugin architecture; just markdown files on my computer, edited in a clean interface. The stack: Ele