Antigone
Native macOS Electron markdown editor with four carefully designed themes — White, Parchment, Sepia, and Midnight. Code-signed with Developer ID and notarized with Apple for Gatekeeper-free distribution, with a marketing site live at antigone.app.
The Problem
Most markdown editors are either too minimal or too complex. Writers who work in plain text all day need an editor that feels considered, not a developer tool with markdown support bolted on.
Approach
Electron with strict security constraints from the start. All renderer-to-main communication through a typed contextBridge preload layer. Themes use CSS custom properties for instant switching. Code signing and notarization handled via Apple Developer ID certificate and Xcode command-line tools.
Outcome
Shipped as a distributable DMG. Code-signed and notarized, passes macOS Gatekeeper without warnings. Marketing site live at antigone.app.
What I Learned
Apple notarization requires every binary in the app bundle to be signed, not just the outer .app wrapper. A single unsigned helper binary fails the entire notarization submission.