Replaced hardcoded Debug paths in all .csproj files with $(Configuration) for AyCode and FruitBank DLL references, enabling correct DLL resolution for any build configuration. Switched appsettings.json connection string to use the FruitBank_PROD database. Added a null check for StockTaking in StockSignalREndpointServer.cs to prevent possible null reference exceptions. Noted some encoding issues in .csproj comments and copyright fields. No other functional changes.
Changed the database in appsettings.json connection string from FruitBank_PROD to FruitBank_DEV for development purposes. Other connection parameters remain unchanged.
- Deleted Mango.Sandbox.SignalRTestClient project and all related files from the solution.
- Switched appsettings.json connection string to use FruitBank_DEV.
- Cleaned up project references in Mango.Sandbox.EndPoints and its test project.
- Commented out all Null* plugin manager/service classes in Mango.Sandbox.EndPoints.Services.
- Add endpoints and tests for binary serialization of TestCustomerDto lists to reproduce and diagnose MessagePack interned string index errors
- Update appsettings.json to use FruitBank_PROD database
- Set AcBinarySerializerOptions in DevAdminSignalRHubSandbox
- Extend TestSignalRTags and ITestSignalREndpointServer for new endpoints
- Add TestCustomerDto class for serialization tests
- Remove obsolete low-level SignalR/HTTP endpoint test files