Audit all 6 user settings sections. Remove dead chat-era code,
rename localStorage namespace, clean up stale backend policies.
- Remove BYOK nav section (empty BYOK_ITEMS, byokEnabled state,
"BYOK Enabled" badge) and personas gate filter from settings nav
- Remove auth.permissions.changed listener (existed solely for
dead BYOK + personas state)
- Remove Message Font Size slider, msgFont state, and --msg-font
CSS variable application from appearance section and base template
- Rename localStorage key cs-appearance → sb-appearance with
one-time migration preserving existing user preferences
- Remove allow_user_byok and allow_user_personas from PolicyDefaults,
profile bootstrap, permissions handler, PublicSettings, and test seeds
- Remove orphaned .settings-nav-footer CSS class
- Replace stale policy-gating test assertions with allow_registration
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
