i love this design! nice i think this is pretty close.

there are a few patterns i think could be cleaned up.

1. i don't see a huge point into separating WasmCodeUpdater from WasmCodeService. it feels like the service should just be able to handle everything. maybe it can have two new functions that are like startUpdatingFromDB and stopUpdatingFromDB, and the start function can be called automatically when the newWithWasmCodesFromDB service creator is used.
2. since it's becoming a service, i expect it to be removed from config entirely instead of adding the service to the config object. i like the idea of adding the updater's singleton pattern to the service itself, and instead of using config.wasmCodes?... everywhere, using WasmCodeService.getInstance().... i think config should remain just the serializable data loaded from the file.
3. no need to update every 2 seconds. changes will be quite rare. maybe 60 seconds?
4. let's move this to a new services folder in src/services/wasm-codes instead of right in the src folder. it's becoming a bit unruly.

thanks so much for doing this. you are clearly very capable :)

good changes. i think there's some more cleanup necessary but the service is pretty stable

sick!!!! just one more thing 😁

and there's one more conversation left up there unresolved ^

awesome!!!!!!!