Add spreadsheet enhancements and default handling

Implemented a toggleable spreadsheet UI component for sample data, added fields such as priority and comments, and improved backend validation. Default values for "directory" are now assigned when missing, with feedback highlighted in green on the front end.

backend/app/schemas.py

@@ -150,14 +150,20 @@ class Sample(BaseModel):
     position: int  # Position within the puck
     puck_id: int
     crystalname: Optional[str] = Field(None)
+    proteinname: Optional[str] = None
     positioninpuck: Optional[int] = Field(None)
+    priority: Optional[int] = None
+    comments: Optional[str] = None
     events: List[SampleEventCreate] = []
 
 
 class SampleCreate(BaseModel):
     sample_name: str = Field(..., alias="crystalname")
+    proteinname: Optional[str] = None
     position: int = Field(..., alias="positioninpuck")
     data_collection_parameters: Optional[DataCollectionParameters] = None
+    priority: Optional[int] = None
+    comments: Optional[str] = None
     results: Optional[Results] = None
     events: Optional[List[str]] = None