Refactor Falukant certificate management: Consolidated certificate logic into the FalukantFamilyWorker's daily processing, removing the separate FalukantCertificateWorker. Updated SQL queries to include app_user_id and enhanced documentation for clarity on certificate scoring and daily recalculation logic.

src/worker/mod.rs

@@ -33,5 +33,4 @@ pub use transport::TransportWorker;
 pub use weather::WeatherWorker;
 pub use events::EventsWorker;
 pub use falukant_family::FalukantFamilyWorker;
-pub use falukant_certificate::FalukantCertificateWorker;