2026.4.2

Changes

🚀 Features

• Add support for merchant opening hours and update mapping @StuartFerguson (#651)

🐛 Bug Fixes

• Refactor transaction handlers and remove ClaimsHelper2 @StuartFerguson (#643)
• bug in auth configuration @StuartFerguson (#642)

🧰 Maintenance

• Refactor ModelFactory to static, remove IModelFactory interface @StuartFerguson (#641)
• Refactor ProcessSaleTransaction to use parameter tuples @StuartFerguson (#639)
• Handle null input in ConvertFrom by returning empty list @StuartFerguson (#638)
• Refactor voucher methods to use Result for responses @StuartFerguson (#637)
• Refactor Program.cs to modern C# style and structure @StuartFerguson (#636)