feat: initial commit

backend/alembic/versions/008_material_metadata.py

@@ -0,0 +1,32 @@
+"""Add created_by and source to materials
+
+Revision ID: 008
+Revises: 007
+Create Date: 2026-03-01
+
+"""
+from typing import Sequence, Union
+from alembic import op
+import sqlalchemy as sa
+from sqlalchemy.dialects.postgresql import UUID
+
+revision: str = "008"
+down_revision: Union[str, None] = "007"
+branch_labels: Union[str, Sequence[str], None] = None
+depends_on: Union[str, Sequence[str], None] = None
+
+
+def upgrade() -> None:
+    op.execute(
+        "ALTER TABLE materials "
+        "ADD COLUMN IF NOT EXISTS created_by UUID REFERENCES users(id) ON DELETE SET NULL, "
+        "ADD COLUMN IF NOT EXISTS source VARCHAR(20) NOT NULL DEFAULT 'manual'"
+    )
+
+
+def downgrade() -> None:
+    op.execute(
+        "ALTER TABLE materials "
+        "DROP COLUMN IF EXISTS created_by, "
+        "DROP COLUMN IF EXISTS source"
+    )