Initial curated RAGcore source from c16667f0c9397e2bfc8dd0255b114fba23c8d05e

alembic/versions/0004_space_data_policy.py

@@ -0,0 +1,28 @@
+"""Persist the documented knowledge-space data policy."""
+
+from __future__ import annotations
+
+import sqlalchemy as sa
+from alembic import op
+
+revision = "0004_space_data_policy"
+down_revision = "0003_identity_credentials"
+branch_labels = None
+depends_on = None
+
+
+def upgrade() -> None:
+    """Add an explicit policy column with the contract's local-only default."""
+
+    op.add_column(
+        "spaces",
+        sa.Column("data_policy", sa.String(32), nullable=False, server_default="local_only"),
+        schema="control",
+    )
+    op.alter_column("spaces", "data_policy", server_default=None, schema="control")
+
+
+def downgrade() -> None:
+    """Remove only the policy column introduced by this migration."""
+
+    op.drop_column("spaces", "data_policy", schema="control")