Since everyone is showing their flow, here's mine:

* create a feature-name.md file in a gitignored folder

* start the file by giving the business context

* describe a high-level implementation and user flows

* describe database structure changes (I find it important not to leave it for interpretation)

* ask Claude to inspect the feature and review if for coherence, while answering its questions I ask to augment feature-name.md file with the answers

* enter Claude's plan mode and provide that feature-name.md file

* at this point it's detailed enough that rarely any corrections from me are needed