Show HN: Read your Character.AI data export in the browser, nothing uploaded

This open-source browser-based reader opens a Character.AI data export ZIP or its JSON files to view your characters and chats, plus character cards and chat exports from other apps, with the file read locally on your device and nothing uploaded. It requires Node.js 20 or newer, makes no network requests, and is also available online for free without an account. The repository mirrors the reader Amavie uses to import characters and conversations from other apps.