now creating dewars, pucks and samples from spreadsheet and replacing dewars if a dewar with the same name exists

backend/app/models.py

@@ -1,4 +1,4 @@
-from sqlalchemy import Column, Integer, String, Date, ForeignKey
+from sqlalchemy import Column, Integer, String, Date, ForeignKey, JSON
 from sqlalchemy.orm import relationship
 from app.database import Base
 from app.calculations import calculate_number_of_pucks, calculate_number_of_samples
@@ -107,6 +107,7 @@ class Sample(Base):
     id = Column(Integer, primary_key=True, index=True, autoincrement=True)
     sample_name = Column(String, index=True)  # Matches `sample_name` in data creation
     position = Column(Integer)  # Matches `position` in data creation script
+    data_collection_parameters = Column(JSON, nullable=True)
 
     # Foreign keys and relationships
     puck_id = Column(Integer, ForeignKey('pucks.id'))