docs: bring the wiki up to v0.2.1 Install from the cask or DMG with the setup window, update and uninstall from the app, the API credit fallback and dead-key notes, a Remote tasks page, the Codex/ChatGPT tab, card menus, Settings' General/Automation/Remote sections, and the widget shipping in the app. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>