Solves the core usability problem of zero-knowledge encryption: on page reload the in-memory DEK is lost, so the user can't decrypt their data even though their JWT is still valid. Previously they had to close the tab and re-login from scratch. Changes: - Persist wrapped_dek/wrapped_dek_iv in the auth store (zustand persist). Safe: it's AES-GCM ciphertext, useless without the password KEK — the server already stores the same ciphertext. login/register/recover all save the wrapped DEK; logout clears it. - New UnlockPage: minimal password-only form. Re-derives the DEK locally via unlockWithPassword (no API call — the JWT is still valid). Falls back to deriveAuthAndEncKeys for Phase 1 compat accounts. Links to /login and /recover. - ProtectedRoute now checks hasEncKey() after isAuthenticated: authenticated but no in-memory DEK → redirect to /unlock. - /unlock route in App.tsx (public, alongside login/register/recover). Flow: login → browse → reload page → unlock screen → enter password → dashboard loads with decrypted data. No full re-login needed. Verified: npm build clean, 20 tests pass. |
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