- Replace the gear/username button with a round initials avatar (per-user
deterministic color via a new daybook_extras template filter); dropdown
now shows the username and keeps Settings/About/theme/logout. Sets up an
optional profile photo later.
- Regroup the settings nav into "You" (Account, API Keys, Storage, Demo
Data) and a superuser-only "Admin" (Users), About separate — the split
now reflects who each setting affects, not a flat list.
- Register ApiKey (key read-only) and TagColor in Django admin so /admin/
is complete as the operator break-glass tool, distinct from the themed
Settings product surface.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>