Sync scripts/init-db.sql with infrastructure/docker/services/postgres/init.sql
to include all required database columns:
- users: fingerprint, nickname columns for anonymous auth support
- conversations: ended_at column for tracking conversation end time
- messages: type enum column (USER, ASSISTANT, SYSTEM)
This ensures the schema files are consistent and include all columns
needed by the application entities.
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>