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/0012_dedupe_bill_actions_unique.py

@@ -0,0 +1,32 @@
+"""Deduplicate bill_actions and add unique constraint on (bill_id, action_date, action_text)
+
+Revision ID: 0012
+Revises: 0011
+"""
+from alembic import op
+
+revision = "0012"
+down_revision = "0011"
+branch_labels = None
+depends_on = None
+
+
+def upgrade():
+    # Remove duplicate rows keeping the lowest id for each (bill_id, action_date, action_text)
+    op.execute("""
+        DELETE FROM bill_actions a
+        USING bill_actions b
+        WHERE a.id > b.id
+          AND a.bill_id = b.bill_id
+          AND a.action_date IS NOT DISTINCT FROM b.action_date
+          AND a.action_text IS NOT DISTINCT FROM b.action_text
+    """)
+    op.create_unique_constraint(
+        "uq_bill_actions_bill_date_text",
+        "bill_actions",
+        ["bill_id", "action_date", "action_text"],
+    )
+
+
+def downgrade():
+    op.drop_constraint("uq_bill_actions_bill_date_text", "bill_actions", type_="unique")