6433d9172c
- Add NostrIdentityContext with SecureStore-backed nsec storage and pure-JS bech32/secp256k1 for nsec→npub derivation; private key never enters React state or logs - Android: NIP-55 Amber deep-link integration (get_public_key + sign_event) with install-prompt fallback to Play Store when Amber is absent; Android queries manifest entry for com.greenart7c3.nostrsigner - iOS/both: manual nsec entry stored exclusively in expo-secure-store - Settings tab (gear icon) added to both NativeTabLayout and ClassicTabLayout showing: connected npub (truncated), signing method badge, Disconnect button (with confirmation + SecureStore wipe) - Root layout wrapped with NostrIdentityProvider - app.json: add expo-secure-store plugin + Android intentFilters for mobile://amber-callback deep-link return path Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>