added email to db schema

database.py

@@ -11,9 +11,10 @@ SessionLocal = sessionmaker(bind=engine)
 class Candidate(Base):
     __tablename__ = "candidates"
     id = Column(Integer, primary_key=True, index=True)
-    name = Column(String, index=True)
+    name = Column(String(255), index=True)
     score = Column(Integer)
     summary = Column(Text)
+    email = Column(String(255), unique=True, index=True)  # Add email to the schema
     resume_text = Column(Text)
     pdf_link = Column(String)