added activity view

FitnessSync/backend/src/models/bike_setup.py

@@ -0,0 +1,15 @@
+from sqlalchemy import Column, Integer, String, DateTime
+from sqlalchemy.sql import func
+from .base import Base
+
+class BikeSetup(Base):
+    __tablename__ = "bike_setups"
+
+    id = Column(Integer, primary_key=True, index=True)
+    frame = Column(String, nullable=False)
+    chainring = Column(Integer, nullable=False)
+    rear_cog = Column(Integer, nullable=False)
+    name = Column(String, nullable=True) # Optional, can be derived or user-set
+    
+    created_at = Column(DateTime(timezone=True), server_default=func.now())
+    updated_at = Column(DateTime(timezone=True), onupdate=func.now())