Function isRecipe

src/schedule/recipes.ts:19–21

(s: string | undefined | null)

export type RecipeKind = (typeof RECIPES)[number];

export function isRecipe(s: string | undefined | null): s is RecipeKind {
  return !!s && (RECIPES as readonly string[]).includes(s);
}

/**
 * Wrap a user goal in the chosen recipe's protocol. Returns the full prompt to feed the