Antigravity
1d6862016d
Resolves #75 ### Description This pull request implements a smart, Native AOT-compliant contextual recommendation engine for the desktop dashboard to drive user retention and cross-book monetization. ### Key Changes 1. **Application Layer**: - Declared `IUserReadingStateStore` interface to decouple reading state discovery. - Added `IVectorSearchStore.SearchGlobalExcludeAsync(...)` to abstract semantic similarity searches with exclusions. - Defined `GetContextualRecommendationsQuery` and response DTOs (`ContextualRecommendationResponse`, `RecommendationDto`). 2. **Infrastructure Layer**: - Implemented `UserReadingStateStore` using EF Core with DbContext pooling. - Implemented `SearchGlobalExcludeAsync` in `VectorSearchStore` to construct gRPC Qdrant filters (excluding the active book ID) and fetch `bookTitle` and `chapterTitle` from point payloads. - Implemented `GetContextualRecommendationsQueryHandler` using clean abstractions. 3. **Web & Serialization Layer**: - Mapped `GET /api/recommendations` endpoint. - Registered types in `AppJsonContext.cs` for AOT-compliant JSON serialization. 4. **Verification**: - Added complete unit test coverage in `GetContextualRecommendationsQueryTests.cs`. All 30 unit tests pass. --------- Co-authored-by: Marek Jasiński <jasins.marek@gmail.com> Reviewed-on: #76 Co-authored-by: Antigravity <antigravity@google.com> Co-committed-by: Antigravity <antigravity@google.com>
📖 Nexus Reader
Nexus Reader is a state-of-the-art, cross-platform Blazor .NET 10 immersive e-book reader, powered by Native AOT, Clean Architecture, CQRS, and interactive D3.js Relationship Graphs built on vector-based AI semantics.
✨ Features & Architecture Highlights
📁 Ingestion & Description persistence
- Extracted and persistent book descriptions from EPUB package metadata during book ingestion.
- The
Descriptionfield propagates cleanly from theEbookentity through Mapster toLastReadBookDtoandUserProfileDto.
🔗 Deep-Link Routing
- Implemented deep-link route activation:
/reader/{bookId}?chapter=N. - Allows instant resume of reading session coordinates and loads the specific chapter chapter directly via URL query parameters.
🛡️ Downstream AI Resilience
- Standard resilience engine in
DependencyInjection.csutilizing the Polly package (ai-retry). - Automatically intercepts, handles, and retries on both rate-limits (
429 Too Many Requests) and downstream capacity overloads (503 ServiceUnavailable/high demand).
⚙️ Concurrent Request Deduplication
- Multi-client InteractiveAuto Blazor circuit synchronization is backed by a thread-safe active task registry in
KnowledgeServicewhich ensures that identical concurrent requests await a single shared task instance, eliminating redundant LLM queries.
🛠️ Build & Verification Gate
Ensure the dotnet workload matches the active SDK, and compile the full solution utilizing:
dotnet build NexusReader.slnx --no-restore
Run test suite:
dotnet test --no-restore
🗄️ Database Migrations
Automatic database migrations at startup (MigrateAsync()) have been disabled to ensure compatibility with Native AOT compilation and prevent locking issues in multi-instance environments.
To apply database migrations locally, run the EF Core migration command from the solution root:
dotnet ef database update --project src/NexusReader.Infrastructure --startup-project src/NexusReader.Web