Adds pseudonymous, switchable social identities derived from the SAME root
seed via an account index (NostrKeyDerivation.deriveFromSeed(seed, account)).
HKDF is one-way so accounts are unlinkable to the Ğ1 key; account 0 is the
original identity, byte-for-byte unchanged (no rotation for current users),
and every account regenerates from the single seed — so switching adds
nothing to back up.
- SocialAccountStore: keystore-backed active account + max created.
- Per-identity stores (chats, profile, name cache) namespaced by account
scope (account 0 = legacy keys, no migration) so identities never mix.
- switchSocialAccount() re-derives the identity, re-scopes the stores and
restarts the inbox listener; RestartWidget rebuilds the tree to pick up
the new social singletons. DB/inventory untouched.
- Profile 'Your identities' switcher: list, create, switch (with a note
that messages/contacts are kept separate per identity). i18n en/es/pt/ast.
Tests: account-indexed derivation (legacy 0 unchanged, accounts distinct
yet deterministic, negatives rejected); SocialAccountStore; per-identity
store scope isolation. Resolves the flagged 'change identity' decision
(open-decisions §B).
Known: switching resets navigation to home (full tree rebuild).
Closes the profile loop — peers now appear by name, not a raw key.
- ProfileCache: keystore-backed cache of peers' published display names (works
offline) + shortPubkey() fallback.
- Chat: the app bar shows the peer's name (cached first, then freshened from
their kind:0 over the session); falls back to a short key.
- Inbox: each conversation shows the cached name, and missing names are resolved
over one session and cached.
- Wired via DI + TaneApp(profileCache).
Analyzer clean; ProfileCache covered by a plain test.
