Installs and configures code editors on macOS - VS Code plus Cursor by default (Zed alternative), the code/cursor shell commands, a merged settings.json baseline, extensions, Settings Sync. Use for "install VS Code/Cursor/Zed", "code command not found", "editor settings baseline", "which extensions". Not for terminal emulators, JetBrains/Neovim config, or linter and LSP debugging.