Introduces comprehensive user authentication flow with plan selection and registration
Includes:
- Pricing page with plan details and selection
- Payment page with plan summary and card information
- Signup page for different plan tiers
- Shared authentication layout and design system improvements
Enhances user onboarding experience with clear plan information and streamlined signup process
Migrates from standalone Program.cs to Startup-based configuration
Adds application configuration JSON for environment-specific settings
Integrates Autofac dependency injection and modular service registration
Configures application services, modules, and middleware for enhanced flexibility