Add postgres ACLRepo (List/Get/Set) and ACLService with CanView/CanEdit
checks (admin bypass, public flag, creator shortcut, explicit grants)
and GetPermissions/SetPermissions for the /acl endpoints.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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>
