Antigravity
23acaeb705
Resolves the KM-RAG Polyglot Persistence and Background Ingestion Pipeline Migration task. ### Key Changes 1. **Infrastructure Migration**: Integrated Qdrant (for vector embeddings) and Neo4j (for concept graphs), reducing reliance on PostgreSQL pgvector storage. 2. **Concurrent Background Job**: Implemented a robust Hangfire `EbookIngestionJob` utilizing Polly exponential retries for transient 429 rate limits, executing three core ingestion tasks concurrently via `Task.WhenAll`. 3. **Data Layer**: Standardized database schemas and entities; retained `Pgvector.EntityFrameworkCore` for migration compilation compatibility. 4. **Wasm Client & Tests**: Implemented client support for semantic search and refactored related tests in `QueryTests.cs` to mock `IKnowledgeService`. ### Verification Status - **Build**: Successfully compiles with `dotnet build NexusReader.slnx --no-restore` (0 errors). - **Tests**: All 5 unit tests pass cleanly with `dotnet test NexusReader.slnx --no-restore`. **Resolve** #47 --------- Co-authored-by: Marek Jasiński <jasins.marek@gmail.com> Reviewed-on: #46 Reviewed-by: Marek Jaisński <jasins.marek@gmail.com> 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