- Renamed `totalUsers` and `activeUsers` to `total_users` and `active_users` across frontend and backend for consistency.
- Enhanced demo user creation by randomizing `created_at` dates for realistic charts.
- Expanded demo data to include `is_active` for demo users, improving user status representation.
- Refined admin dashboard statistics to support updated user growth data model.
- Implemented `load_demo_data` to populate organizations, users, and relationships from `demo_data.json`.
- Refactored database initialization to handle demo-specific passwords and multi-entity creation in demo mode.
- Added `demo_data.json` with sample organizations and users for better demo showcase.
- Introduced `.env.demo` to simplify environment setup for demo scenarios.
- Updated `.gitignore` to include `.env.demo` while keeping other `.env` files excluded.
