- exportSelected(groupIds, { vaultKey, password, useExistingPassword }) replaces the
positional (groupIds, vaultKey, exportPassword) form. Protection is now an explicit
choice, never an ambiguous optional field.
- password mode: re-key entries under a fresh export-derived key (unchanged semantics).
- reuseExistingPassword mode: seal with the vault's own key, keep vault salt embedded,
so import derives the key from the vault master password. No second password required.
- ImportExport.svelte: replaces the long-placeholder free-text field with two radio
options (Use a new password / Reuse my vault password); short placeholder, with
client-side validation that a new password isn't empty.
- Cryptography importAll unchanged: derives the envelope key from the supplied password +
embedded salt, which covers both sealed modes; wrong password still rejects import.
- Tests: updated call sites to options object; added round-trip + wrong-password tests for
reuseExistingPassword.
- exportSelected(groupIds, vaultKey, exportPassword=''): plain JSON export unchanged when
no export password; when one is set, re-keys each entry's password to a key derived from
the export password and AES-256-GCM-seals the entire payload (titles/usernames/notes
protected too). Returns a { format: 'encrypted-export', salt, data } envelope.
- importAll() detects sealed exports and treats the supplied password as the EXPORT password,
so it may differ from any vault's master password. Wrong password rejects import instead of
silently skipping entries.
- ImportExport.svelte: optional 'separate password' field in the export dialog; import dialog's
field reworded as a generic file password covering both plain and sealed files.
- Tests for sealed export/import round-trip incl. wrong-password & missing-password rejects.
