fix(manage-users): detach FK references before deleting user (RESTRICT FKs in order_history/action_logs/suggestions/order_groups blocked auth.deleteUser with 'Database error deleting user')

supabase/functions/manage-users/index.ts

@@ -132,6 +132,25 @@ Deno.serve(async (request) => {
         return jsonResponse({ ok: false, error: "Пользователь не найден" }, 404, corsHeaders);
       }
 
+      // Detach FK references before deleting auth user.
+      // Several tables reference public.users via RESTRICT FKs (no ON DELETE CASCADE):
+      // order_history, action_logs, suggestions, order_groups.assigned_driver_id, etc.
+      // Without detaching, auth.admin.deleteUser fails with "Database error deleting user".
+      const detachStatements: Array<[string, string]> = [
+        ["orders", "manager_id"],
+        ["orders", "logistician_id"],
+        ["orders", "assigned_driver_id"],
+        ["order_logisticians", "assigned_by"],
+        ["order_history", "user_id"],
+        ["delivery_slots", "logistician_id"],
+        ["order_groups", "assigned_driver_id"],
+        ["action_logs", "performed_by"],
+        ["suggestions", "author_id"],
+      ];
+      for (const [table, column] of detachStatements) {
+        await supabase.from(table).update({ [column]: null }).eq(column, userId);
+      }
+
       // Delete auth user (FK ON DELETE CASCADE will remove public.users row)
       const { error: authDeleteError } = await supabase.auth.admin.deleteUser(userId);
       if (authDeleteError) {