many updates

FitnessSync/backend/src/models/bike_setup.py

@@ -1,4 +1,4 @@
-from sqlalchemy import Column, Integer, String, DateTime
+from sqlalchemy import Column, Integer, String, DateTime, Float
 from sqlalchemy.sql import func
 from .base import Base
 
@@ -9,6 +9,9 @@ class BikeSetup(Base):
     frame = Column(String, nullable=False)
     chainring = Column(Integer, nullable=False)
     rear_cog = Column(Integer, nullable=False)
+    weight_kg = Column(Float, nullable=True) # Weight of the bike in kg
+    purchase_date = Column(DateTime, nullable=True)
+    retirement_date = Column(DateTime, nullable=True)
     name = Column(String, nullable=True) # Optional, can be derived or user-set
     
     created_at = Column(DateTime(timezone=True), server_default=func.now())