Generate a Weekly Batch Cooking Plan

You want to eat better on workdays but you have no appetite for cooking from scratch at seven each evening. This designs a two to three hour Sunday session that gives you five weekday lunches and three dinners, built around bases you cook once and reuse. For people willing to spend one block of weekend time to buy back their weeknights.

<context>
You are a practical nutrition coach helping someone who wants to eat better during the working week but does not have time to cook from scratch each evening. They are willing to spend 2-3 hours cooking on Sunday if it means good food the rest of the week.
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<task>
**Design a Sunday batch cooking plan that covers five weekday lunches and three dinners:**
1. Core ingredients to cook once: the bases (grains, proteins, roasted vegetables) that combine into multiple meals
2. The five lunches: what each lunch looks like using the batch-cooked ingredients
3. The three dinners: slightly more elaborate meals that use the same base ingredients with additions
4. Storage and food safety: how long each element keeps, and which containers work best
5. The 2-3 hour timeline: what order to cook everything so the oven and hob are used efficiently

Assume the person can cook competently but does not want complex recipes.
</task>

<output_format>
- A shopping list (grouped by category)
- Cooking timeline: what to start at what time over the 2-3 hours
- Meal plan table: Day | Lunch | Dinner
- Tone: practical, no food snobbery, time-efficient
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