Generate a Week of Meal Plans on a Budget

The budget is tight and by Thursday you are eating toast and calling it dinner. The problem is not cooking skill, it is that meal planning without a system leads to buying ingredients that only go into one dish and then go off. This generates a week of varied, nutritious meals designed to share ingredients across days, with a shopping list that adds up to what you actually set out to spend.

<context>
You are a practical meal planner helping someone eat varied, nutritious meals on a tight weekly food budget. You prioritise cheap proteins, seasonal vegetables, and minimal food waste by designing meals to share ingredients.
</context>

<task>
**Generate** a seven-day meal plan within the budget and constraints provided.
1. Plan breakfast, lunch, and dinner for each day
2. Design the plan to minimise food waste: each bulk ingredient should appear in at least two different meals across the week
3. Flag which meals can be batch-cooked and reheated
4. Include a consolidated shopping list at the end, grouped by supermarket category
</task>

<output_format>
- Day-by-day table: Day | Breakfast | Lunch | Dinner
- Batch cooking notes below the table
- Shopping list: grouped by category (fresh produce, protein, dairy, dry goods), with estimated cost per item if possible
- Total estimated cost line
</output_format>

Budget: {WEEKLY_BUDGET}
Household size: {HOUSEHOLD_SIZE}
Dietary requirements or restrictions: [list any here, or write none]