[Feature Idea] Shopping List

Is your feature request related to a problem? Please describe.
Nope. No Problem.

Context
We are currently using the Deck-App as a simple shopping list.

Describe the solution you'd like
Could it be possible to add the functionality to add a recipes ingredients to this shopping list?
This would be nice if it would work with together with a manual shopping list (merge or certain tagged items).
Simple on button move card in Deck-App

Idea
Maybe all cookbook-items could be tagged in some way so cookbook knows what it can change and just move it on the board or create it when the recipe is added to the shopping list.

Detailed info of the shopping list (for further clarification but pretty simple)

• two columns: "to buy" and "bought"
• to buy has all the items for the current shopping trip
• when bought we move the card to the bought column to not buy it twice but so we do not have to add it back every time we need to buy it

The issue names no files, tests, or entry points. Start by tracing how cookbook recipes and ingredients are represented and how the Deck-App shopping board could be integrated; clarify the merge and tagging behavior first. Done would include moving recipe ingredients into a two-column shopping list while preserving manual items and avoiding duplicate purchases.