feat(Core): update DTOs and shared models

FinlyticCore/Project.md

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+# FinlyticCore Library
+
+`FinlyticCore` is the central shared class library for the Finlytic microservice architecture. It provides standardized data transfer objects (DTOs), domain models, MQTT communication primitives (`ManagedMqttClient`), and .NET 8 JSON Source Generators.
+
+---
+
+## Key Modules & Components
+
+1. **`ManagedMqttClient`**:
+   - Resilient MQTT wrapper handling auto-reconnect, structured JSON publishing, topic subscription management, and synchronous Request-Reply (RPC) execution over MQTT.
+
+2. **`FinlyticJsonSerializerContext`**:
+   - .NET 8 Source Generator context (`[JsonSourceGenerationOptions]`, `[JsonSerializable]`) for reflection-free, zero-allocation UTF-8 JSON serialization across MQTT messages.
+
+3. **Domain Models & DTOs**:
+   - `Dtos/News`: `NewsArticleDto`, `DiscoveredArticle`, `MatchedAssetDto`, `FinBertResultDto`.
+   - `Dtos/Fundamentals`: `AssetFundamentalsDto`, `CorporateEventDto`.
+   - `Dtos/TechnicalAnalysis`: `CandleDto`, `ChartPatternDto`, `IndicatorValuesDto`, `MarketRegimeDto`, `StrategySignalDto`, `TechnicalAnalysisDto`.
+   - `Dtos/Sentiment`: `IsinSentimentSummaryDto`, `SectorSentimentSummaryDto`.
+   - `Models/Trades`: `TradeProposalDto`, `CloseTradeRequest`, `TradeHourlyUpdateDto`, `TradeFeedbackRecord`, `TradeStatus`.
+
+---
+
+## Feature Status
+
+### Implemented Features
+- [x] Centralized DTO definitions shared across all C# microservices.
+- [x] Zero-allocation .NET 8 JSON Source Generation for all MQTT payloads.
+- [x] Resilient MQTT RPC engine (`ExecuteRpcAsync`).
+
+### Planned Features
+- [ ] Binary Protocol Buffers (protobuf) serialization option for ultra-low latency internal MQTT streaming.