Add per-section TG classifications

alembic/versions/0012_message_classifications.py

@@ -0,0 +1,38 @@
+"""per-section message classifications
+
+Revision ID: 0012
+Revises: 0011
+Create Date: 2026-06-11
+
+"""
+from typing import Sequence, Union
+
+import sqlalchemy as sa
+from alembic import op
+from sqlalchemy.dialects import postgresql
+
+revision: str = "0012"
+down_revision: Union[str, None] = "0011"
+branch_labels: Union[str, Sequence[str], None] = None
+depends_on: Union[str, Sequence[str], None] = None
+
+
+def upgrade() -> None:
+    op.create_table(
+        "message_classifications",
+        sa.Column("id", sa.Integer(), primary_key=True),
+        sa.Column("message_id", sa.Integer(), sa.ForeignKey("messages.id", ondelete="CASCADE"), nullable=False),
+        sa.Column("section_id", sa.Integer(), sa.ForeignKey("sections.id", ondelete="CASCADE"), nullable=False),
+        sa.Column("vertical", sa.String(length=32), nullable=False),
+        sa.Column("verdict", postgresql.JSONB(astext_type=sa.Text()), nullable=False),
+        sa.Column("updated_at", sa.DateTime(timezone=True), server_default=sa.func.now()),
+        sa.UniqueConstraint("message_id", "section_id", name="uq_message_classification_section"),
+    )
+    op.create_index("ix_message_classifications_message", "message_classifications", ["message_id"])
+    op.create_index("ix_message_classifications_section", "message_classifications", ["section_id"])
+
+
+def downgrade() -> None:
+    op.drop_index("ix_message_classifications_section", table_name="message_classifications")
+    op.drop_index("ix_message_classifications_message", table_name="message_classifications")
+    op.drop_table("message_classifications")