Masahiko AMANO 277f42035c feat(backend): implement auth service with JWT and session management
Login: bcrypt credential validation, session creation, JWT pair issuance.
Logout/TerminateSession: soft-delete session (is_active = false).
Refresh: token rotation — deactivate old session, issue new pair.
ListSessions: marks IsCurrent by comparing session IDs.
ParseAccessToken: for use by auth middleware.

Claims carry uid (int16), adm (bool), sid (int). Refresh tokens are
stored as SHA-256 hashes; raw tokens never reach the database.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
2026-04-04 00:38:21 +03:00
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