Marcel 74febd37f6 feat(user): add deterministic avatar color to AppUser
Adds color field assigned from an 8-colour palette keyed on the user's UUID
hash (Math.abs(id.hashCode()) % 8). Fires via @PrePersist/@PreUpdate/@PostLoad
so both new and existing users get the correct colour at runtime.

V47 migration adds the column and fixes the V46 REVOKE bug that hardcoded
role name 'app_user' instead of CURRENT_USER.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
2026-04-20 07:45:16 +02:00
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