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/alembic/versions/0019_add_email_unsubscribe_token.py

@@ -0,0 +1,22 @@
+"""Add email_unsubscribe_token to users
+
+Revision ID: 0019
+Revises: 0018
+"""
+from alembic import op
+import sqlalchemy as sa
+
+revision = "0019"
+down_revision = "0018"
+branch_labels = None
+depends_on = None
+
+
+def upgrade():
+    op.add_column("users", sa.Column("email_unsubscribe_token", sa.String(64), nullable=True))
+    op.create_index("ix_users_email_unsubscribe_token", "users", ["email_unsubscribe_token"], unique=True)
+
+
+def downgrade():
+    op.drop_index("ix_users_email_unsubscribe_token", table_name="users")
+    op.drop_column("users", "email_unsubscribe_token")