### Added
- Database Migration System (src/persistence/migrations/)
- MigrationRunner class for versioned schema migrations
- 7 migrations covering all core tables
- Version tracking in schema_migrations table
- Helper functions: tableExists, columnExists, safeAddColumn, safeCreateIndex
- CLI Migrate Command (src/cli/commands/migrate/)
- aqe migrate status - Show migration status
- aqe migrate run - Run pending migrations
- aqe migrate rollback - Rollback last migration
- aqe migrate reset - Reset all migrations
### Changed
- Database initialization now runs migrations automatically during aqe init
- Schema consistency ensured across all installations
### Fixed
- Schema evolution issues from backup restoration
- Dream learning cycle now works with migrated data
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>