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Marc Schier
30bfa7895f
* Add WoT Connectivity (OPC 10100-1) libraries and tests Implements the OPC UA WoT Connectivity companion specification (OPC 10100-1, `WoT Connectivity for OPC UA`) through four new projects under the unified Opc.Ua.WotCon prefix: * Opc.Ua.WotCon - source-generated model from the official WotConnection.xml + WotConnection.csv design files (NodeStates, NodeIds, ObjectType client proxies including WoTAssetFileTypeClient : FileTypeClient). * Opc.Ua.WotCon.Server - WotConnectivityNodeManager (AsyncCustomNodeManager subclass), factory, DI options. Provider model split into IWotAssetProvider (per-asset Read/Write/Observe/InvokeAction) and IWotAssetDiscoveryProvider (server-level Discover/Test/CreateForEndpoint per spec sec. 6.3.4-6). System.Text.Json TD parser with AOT-safe JsonSerializerContext. Property mapper per spec table 14, action mapper per sec. 6.3.9. WotAssetFileManager enforces only OpenFileMode Read (1) and Write|EraseExisting (6) per spec sec. 6.3.10 and drives CloseAndUpdate materialisation + persistence. * Opc.Ua.WotCon.Client - WotConnectivityClient and WotAssetClient compose the generated proxies (no inheritance). Extension methods on FileTypeClient / WoTAssetFileTypeClient add chunked upload/download and the Open(Write|EraseExisting) -> Write* -> CloseAndUpdate flow, extending the existing FileSystem API without subclassing. * Opc.Ua.WotCon.Tests - NUnit suite (28 passing tests) covering TD parsing, property and action mappers, and the SimulatedWotAssetProvider/SimulatedWotDiscoveryProvider which serve as canonical examples of the provider contract.