api-reference gains a Settings section (GET/PUT /api/settings, the model
config, the case order and PUT /api/config, with the 403 FORBIDDEN a non-admin
gets in multi-user mode). The Multi-User Mode wiki page explains what a regular
user's App Settings save does now, Settings-Reference links it, the plan's
Settings row is marked implemented, and CLAUDE.md notes the gate for the
Multi-user paragraph and for anyone adding a settings write.
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>