Mix calculator

backend/app/db/migrations.py

@@ -15,6 +15,8 @@ TENANT_TABLES = {
     "raw_material_price_versions": None,
     "mixes": None,
     "mix_ingredients": None,
+    "mix_calculator_sessions": None,
+    "mix_calculator_session_lines": None,
     "products": None,
     "scenarios": None,
     "costing_results": None,
@@ -230,6 +232,37 @@ def sync_tenant_ids(engine: Engine) -> dict[str, int]:
                 """
                 ),
             ),
+            (
+                "mix_calculator_sessions",
+                text(
+                """
+                UPDATE mix_calculator_sessions
+                SET tenant_id = COALESCE(
+                    (
+                        SELECT products.tenant_id
+                        FROM products
+                        WHERE products.id = mix_calculator_sessions.product_id
+                    ),
+                    :default_tenant
+                )
+                WHERE tenant_id IS NULL OR tenant_id = '' OR tenant_id = 'default'
+                """
+                ),
+            ),
+            (
+                "mix_calculator_session_lines",
+                text(
+                """
+                UPDATE mix_calculator_session_lines
+                SET tenant_id = (
+                    SELECT mix_calculator_sessions.tenant_id
+                    FROM mix_calculator_sessions
+                    WHERE mix_calculator_sessions.id = mix_calculator_session_lines.session_id
+                )
+                WHERE tenant_id IS NULL OR tenant_id = '' OR tenant_id = 'default'
+                """
+                ),
+            ),
             (
                 "scenarios",
                 text(