feat(tests): containment_result field on blue team evaluation

backend/alembic/versions/b052_add_containment_result.py

@@ -0,0 +1,31 @@
+"""Add containment_result to tests.
+
+Revision ID: b052
+Revises: b051
+Create Date: 2026-06-24
+"""
+from alembic import op
+import sqlalchemy as sa
+
+revision = "b052"
+down_revision = "b051"
+branch_labels = None
+depends_on = None
+
+containment_enum = sa.Enum(
+    "contained", "partially_contained", "not_contained",
+    name="containmentresult",
+)
+
+
+def upgrade() -> None:
+    containment_enum.create(op.get_bind(), checkfirst=True)
+    op.add_column(
+        "tests",
+        sa.Column("containment_result", containment_enum, nullable=True),
+    )
+
+
+def downgrade() -> None:
+    op.drop_column("tests", "containment_result")
+    containment_enum.drop(op.get_bind(), checkfirst=True)