A Common Mistake when working with Kotlin Flows 🥶

When using Kotlin Flows, the producer (emitter) inherits the dispatcher from its collector by default. This means if you don't explicitly use the `flowOn` operator in your repository, your flow will run on whatever dispatcher the ViewModel or Composable scope uses — often the main thread. The correct approach is to always call `flowOn(Dispatchers.IO)` in your repository functions to ensure heavy or expensive operations run on the appropriate dispatcher, regardless of which coroutine scope collects the flow. Two approaches are compared: using `flowOn` in the repository (recommended) vs. passing a dispatcher explicitly to the ViewModel scope (less flexible). Room database handles this internally, but custom flows require manual dispatcher management.