feat: add where are more items problem

app/schemas/grade_1/where_are_more_items.py

@@ -0,0 +1,36 @@
+from typing import Literal
+
+from pydantic import BaseModel, Field, PositiveInt
+
+
+class PictureAsset(BaseModel):
+    id: str = Field(min_length=1)
+    name: str = Field(min_length=1)
+    image_path: str = Field(min_length=1)
+
+
+class ItemGroup(BaseModel):
+    side: Literal["left", "right"]
+    picture: PictureAsset
+    quantity: PositiveInt
+
+
+class MoreItemsComparison(BaseModel):
+    position: PositiveInt
+    left_group: ItemGroup
+    right_group: ItemGroup
+    answer_side: Literal["left", "right"]
+    has_answer_box: bool = True
+
+
+class WhereAreMoreItemsProblem(BaseModel):
+    instructions: str = "Marca dónde hay más."
+    comparisons: list[MoreItemsComparison]
+
+
+class WhereAreMoreItemsRequest(BaseModel):
+    available_pictures: list[PictureAsset] = Field(min_length=1)
+    comparison_count: PositiveInt = 3
+    min_quantity: PositiveInt = 1
+    max_quantity: PositiveInt = 10
+    seed: int | None = None