User Profile Bio

Introduced on April 3, 2026, the User Profile Bio is an optional free-text self-description stored on a user's profile.

Behavior

Plain text, at most 1000 characters. The server rejects a longer value with HTTP 400 ("Bio must be 1000 characters or fewer"). The text is stored and returned as typed; it is not parsed as Markdown.
Users edit their own bio on the Preferences page (/preferences): a "Bio" text area with a live n / 1000 counter, saved together with full name and email.
Administrators can set or change any user's bio in the create/edit dialog on Admin → Users (/admin/users).
Visibility today: only the account owner and administrators see a bio. The reader UI does not display it: there is no public profile page, no author hover-card and no Markdown rendering of bios.

Implementation Detail

Storage

The bio is the bio column of the users table in PostgreSQL, declared VARCHAR(1000) in bin/db/migrations/V002__core_users_groups.sql. In Java it is UserProfile.getBio() / setBio() (DefaultUserProfile).

API Access

GET /api/auth/profile: returns the signed-in user's own profile, including bio (AuthResource).
PUT /api/auth/profile: updates the caller's own fullName, email and bio (and, when requested, the password).
/admin/users and /admin/users/{login} accept and return bio for administrators (AdminUserResource).

No other endpoint returns a user's bio to anyone but its owner or an administrator.

UI Integration

UserPreferencesPage.jsx renders the owner's form and admin/UserFormModal.jsx the administrator's, both in the React SPA (wikantik-frontend).