feat: add project

backend/app/models/datasource.py

@@ -1,4 +1,5 @@
-from sqlalchemy import Column, Integer, String, JSON, DateTime, func
+from sqlalchemy import Column, Integer, String, JSON, DateTime, ForeignKey, func
+from sqlalchemy.orm import relationship
 from app.database import Base
 
 class DataSource(Base):
@@ -8,5 +9,8 @@ class DataSource(Base):
     name = Column(String, nullable=False)
     type = Column(String, nullable=False)
     config = Column(JSON, nullable=False)
+    project_id = Column(Integer, ForeignKey("projects.id"), nullable=False)
     created_at = Column(DateTime, default=func.now())
     updated_at = Column(DateTime, default=func.now(), onupdate=func.now())
+
+    project = relationship("Project", back_populates="data_sources")