fix ocr

backend/app/schemas/base.py

@@ -0,0 +1,15 @@
+"""Base schema with camelCase JSON serialization."""
+from pydantic import BaseModel, ConfigDict
+
+
+def to_camel(s: str) -> str:
+    parts = s.split("_")
+    return parts[0] + "".join(p.capitalize() for p in parts[1:])
+
+
+class CamelModel(BaseModel):
+    model_config = ConfigDict(
+        from_attributes=True,
+        alias_generator=to_camel,
+        populate_by_name=True,
+    )