Pantry units and recipes: amounts in pounds, cups and so on, Use some, and Cooked it with a preview of what comes out

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

docs/v2-roadmap.md

@@ -46,7 +46,7 @@ Not planned: voice and video calls, stories, usernames and phone-number lookup,
 - [x] **Shared lists and notes (M): done (notes.js, the Notes tab):** a real Notes and Lists tab the whole family edits (grocery, packing, gift ideas, house to-dos)
 - [x] **Chores and routines (M):** recurring chores per person, check-offs, optional points and a weekly summary; kids see their own **Done: chores.js and the Chores tab: repeats, points, weekly and monthly board.**
 - [x] **Family calendar (M):** **Done: the Family calendar shows each event in the colour of whoever added it (Settings > Look sets yours); birthdays and anniversaries come from Contacts; inviting people puts the event on their calendar and tells them (no accept or decline). The week view already existed.**
-- [x] **Meal planning (M):** **Done: a shared week plan (Recipes > Meal plan) that adds the week's ingredients to the shopping list, and a Pantry (items with a count and a running-low level) that the plan checks against. Pantry counts are kept by hand and by scanning; they do not go down when you cook. The Pantry lives at Recipes > Pantry and works without Mealie. A phone can scan a barcode to add or use one (several barcodes can belong to one item, so different brands of corn share a count), and a Take one screen lets anyone, children included, tap an item to take one; children can do nothing else to the pantry.**
+- [x] **Meal planning (M):** **Done: a shared week plan (Recipes > Meal plan) that adds the week's ingredients to the shopping list, and a Pantry (items with a count and a running-low level) that the plan checks against. Pantry items can have units (10 lb of flour); **Cooked it** on a recipe (or on a meal plan entry) shows what it would take out, converting cups to pounds for common ingredients, and takes it out when confirmed; **Use some** takes an amount in any convertible unit. These are estimates, and lines that cannot be converted (a whole onion against pounds of onions, pinches) are left alone and listed. The Pantry lives at Recipes > Pantry and works without Mealie. A phone can scan a barcode to add or use one (several barcodes can belong to one item, so different brands of corn share a count), and a Take one screen lets anyone, children included, tap an item to take one; children can do nothing else to the pantry.**
 - [x] **Worship and devotion (S):** a shared daily verse, a Bible reading plan with check-ins, a family prayer list **Done: Bible > Devotion (devotion-view.js, bible.js).**
 
 ## 3. Kids and safety