Implements authentication middleware with rate limiting, comprehensive permission
system, full portal navigation with sidebar and header, company selection flow,
and data migration tooling from SQL Server to PostgreSQL.
Key additions:
- Middleware: auth guards, rate limiting, session management
- Permissions: role-based access control with hierarchical permission rules
- Navigation: responsive sidebar with expandable sections, header with notifications
- Company selector: multi-company user support with session-based active company
- Data migration: comprehensive script for migrating auth and quest domain tables
- Schema: added auth_user_type_permission_group junction table
Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
