- Add database migration v234 for multi-user schema
- Implement users, roles, user_roles, and note_shares tables
- Add user management service with CRUD operations
- Implement role-based permission system (Admin/Editor/Reader)
- Add RESTful user management API endpoints
- Update login flow to support username + password authentication
- Maintain backward compatibility with legacy password-only login
- Create default admin user from existing credentials during migration
- Add session management for multi-user authentication
- Include TypeScript type definitions for Node.js globals
Tests: 948 passed | 17 skipped (965 total)
Build: Successful (server and client)
TypeScript: Zero errors
