- Keys tab crashed on render: api.keys() expected an array but the
backend returns {keys:[...]}; unwrap it (KeysTab maps over the array).
- Config save now sends only CHANGED fields, not the whole section, so
the backend stops spuriously flagging restarts and pinning env-sourced
values into the DB overlay.
- Config edit state survives a reload (saving one section no longer
discards unsaved edits in others); numeric inputs ignore empty/NaN
instead of silently coercing to 0.
- Mint and Revoke now surface errors instead of swallowing them.
Rebuilt admin-ui/dist.
