feat: initial commit

backend/alembic/versions/019_schaeffler_materials.py

@@ -0,0 +1,38 @@
+"""Schaeffler standard materials — add schaeffler_code column and seed 35 materials
+
+Revision ID: 019
+Revises: 018
+Create Date: 2026-03-02
+"""
+from alembic import op
+import sqlalchemy as sa
+import uuid
+from datetime import datetime
+
+revision = "019"
+down_revision = "018"
+branch_labels = None
+depends_on = None
+
+
+def upgrade() -> None:
+    op.add_column("materials", sa.Column("schaeffler_code", sa.Integer(), nullable=True))
+
+    from app.data.schaeffler_materials import SCHAEFFLER_MATERIALS
+
+    conn = op.get_bind()
+    now = datetime.utcnow().isoformat()
+    for mat in SCHAEFFLER_MATERIALS:
+        desc = mat["description"].replace("'", "''")
+        name = mat["name"].replace("'", "''")
+        conn.execute(sa.text(
+            f"INSERT INTO materials (id, name, description, source, schaeffler_code, created_at, updated_at) "
+            f"VALUES ('{uuid.uuid4()}', '{name}', '{desc}', '{mat['source']}', "
+            f"{mat['schaeffler_code']}, '{now}', '{now}') "
+            f"ON CONFLICT (name) DO NOTHING"
+        ))
+
+
+def downgrade() -> None:
+    op.execute("DELETE FROM materials WHERE source = 'schaeffler_standard'")
+    op.drop_column("materials", "schaeffler_code")