Add menstrual cycle tracking (BBT) from passive overnight temperature - #137

Node.js 20 is deprecated. The following actions target Node.js 20 but are being forced to run on Node.js 24: actions/checkout@v4, actions/upload-artifact@v4. For more information see: https://github.blog/changelog/2025-09-19-deprecation-of-node-20-on-github-actions-runners/

call to main actor-isolated initializer 'init(service:account:)' in a synchronous nonisolated context

call to main actor-isolated initializer 'init(apiKey:session:endpoint:)' in a synchronous nonisolated context

main actor-isolated static property 'shared' can not be referenced from a nonisolated context; this is an error in the Swift 6 language mode

call to main actor-isolated initializer 'init(service:account:)' in a synchronous nonisolated context

call to main actor-isolated initializer 'init(service:account:)' in a synchronous nonisolated context

call to main actor-isolated initializer 'init(service:account:)' in a synchronous nonisolated context

call to main actor-isolated initializer 'init(service:account:)' in a synchronous nonisolated context

main actor-isolated static property 'refreshTimeout' can not be referenced from a nonisolated context

call to main actor-isolated initializer 'init(apiKey:session:endpoint:)' in a synchronous nonisolated context