* refactor(user-mgmt): extract formatLastSeen helper
Move the relative-time formatter (with the Navidrome
'0001-01-01T00:00:00Z' epoch guard) into utils/userMgmtHelpers.ts.
UserManagementSection.tsx: 515 → 499 LOC.
* refactor(user-mgmt): extract useUserMgmtData hook
Pull users + libraries state, sequential admin-API fetch, and the
nginx-friendly error normalisation into hooks/useUserMgmtData.ts.
UserManagementSection.tsx: 499 → 464 LOC.
* refactor(user-mgmt): extract useUserMgmtActions hook
Bundle handleSave (covers create + edit + library assignment),
handleSaveAndGetMagic (new non-admin user → encoded magic string on
clipboard), and performDelete into hooks/useUserMgmtActions.ts. The
delete confirmation modal now closes inline in the parent before
delegating to performDelete so the hook stays agnostic of UI state.
UserManagementSection.tsx: 464 → 343 LOC.
* refactor(user-mgmt): extract UserMgmtRow subcomponent
Move the per-user list row (user/admin badges, lib-names blob, magic-
string + delete actions, keyboard activation) into
components/settings/userMgmt/UserMgmtRow.tsx.
UserManagementSection.tsx: 343 → 272 LOC.
* refactor(user-mgmt): extract MagicStringModal subcomponent
Move the per-user magic-string portal modal (password re-set + clipboard
copy of the encoded server-magic-string) into
components/settings/userMgmt/MagicStringModal.tsx. Internal password and
submitting state move into the modal; the parent only owns which user is
targeted.
UserManagementSection.tsx: 272 → 153 LOC.
Frank Stellmacher