Host a dinner party

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I am hosting {{guests}} people at home at {{time}}. My constraints: {{kitchen and time}}. Give me a prep plan: (1) menu design — two dishes made ahead, two cooked to order, one that needs no attention, so nothing competes for the stove; (2) a countdown schedule from two days before to guest arrival; (3) a shopping list organized by supermarket aisle; (4) three rescue plans for a failed dish, more guests than expected, and a dietary restriction; (5) the step most likely to overwhelm me and how to defuse it in advance.

我要在家请 {{人数}} 个人吃饭，时间 {{时间}}，我的条件是：{{厨房与时间条件}}。请给筹备清单：1) 菜单设计——两道能提前做好的、两道现做的、一道不用管的（如凉菜/汤），避免所有菜同时要锅；2) 时间倒排表（从客人到达到提前两天，每个时点做什么）；3) 采购清单按超市动线分区（生鲜、干货、酒水）；4) 三个「救场方案」（菜做砸了、人来得比预期多、有人忌口）；5) 指出最容易让我手忙脚乱的一步，以及怎么提前化解。