SovereignVault is a local-first, zero-knowledge privacy vault for notes, documents, passwords, and cards, built with React, TypeScript, Dexie/IndexedDB, and the Web Crypto API. It runs as a browser app and installable PWA, encrypting everything client-side with AES-GCM, wrapping the vault key behind a WebAuthn passkey, and keeping backups local and encrypted — with the execution roadmap already implemented through its Week 12 baseline covering reliability and AI features. If you need privacy-first tooling where local encryption, passkey auth, and offline-first architecture actually have to hold up under scrutiny, this is the kind of security-conscious engineering he builds.