초기 커밋

app/schemas/common.py

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+from __future__ import annotations
+
+from typing import Generic, TypeVar
+
+from pydantic import BaseModel
+
+T = TypeVar("T")
+
+
+class ErrorResponse(BaseModel):
+    detail: str
+
+
+class PaginatedResponse(BaseModel, Generic[T]):
+    items: list[T]
+    total: int
+    page: int
+    size: int
+    pages: int