f0fac1afaa
- Refactored INativeStorageService and IReaderNavigationService to be fully asynchronous to ensure stable JS Interop in Blazor Server. - Enforced Result pattern in IBillingService and KnowledgeCoordinator for better error propagation. - Resolved 'Headers are read-only' error in Blazor Server by implementing a hybrid login/logout flow using Minimal API endpoints and hidden form submission. - Eliminated all async void signatures across the codebase. - Verified 0 build errors.