feat: PocketVeto v1.0.0 — initial public release

Self-hosted US Congress monitoring platform with AI policy briefs,
bill/member/topic follows, ntfy + RSS + email notifications,
alignment scoring, collections, and draft-letter generator.

Authored by: Jack Levy

backend/app/models/follow.py

@@ -0,0 +1,22 @@
+from sqlalchemy import Column, DateTime, ForeignKey, Integer, String, UniqueConstraint
+from sqlalchemy.orm import relationship
+from sqlalchemy.sql import func
+
+from app.database import Base
+
+
+class Follow(Base):
+    __tablename__ = "follows"
+
+    id = Column(Integer, primary_key=True, autoincrement=True)
+    user_id = Column(Integer, ForeignKey("users.id", ondelete="CASCADE"), nullable=False)
+    follow_type = Column(String(20), nullable=False)   # bill | member | topic
+    follow_value = Column(String, nullable=False)       # bill_id | bioguide_id | tag string
+    follow_mode = Column(String(20), nullable=False, default="neutral")  # neutral | pocket_veto | pocket_boost
+    created_at = Column(DateTime(timezone=True), server_default=func.now())
+
+    user = relationship("User", back_populates="follows")
+
+    __table_args__ = (
+        UniqueConstraint("user_id", "follow_type", "follow_value", name="uq_follows_user_type_value"),
+    )