feat: backend core — models, auth, CRUD, tests

backend/app/schemas/category.py

@@ -0,0 +1,31 @@
+import uuid
+from datetime import datetime
+
+from pydantic import BaseModel
+
+from app.models.category import CategoryType
+
+
+class CategoryCreate(BaseModel):
+    name: str
+    type: CategoryType
+    color: str | None = None
+    icon: str | None = None
+
+
+class CategoryUpdate(BaseModel):
+    name: str | None = None
+    color: str | None = None
+    icon: str | None = None
+
+
+class CategoryResponse(BaseModel):
+    id: uuid.UUID
+    name: str
+    type: CategoryType
+    color: str | None
+    icon: str | None
+    is_default: bool
+    created_at: datetime
+
+    model_config = {"from_attributes": True}