deleting a listing now sets it to deleted in the db, preventing it from reappearing when scraping happens

lib/services/storage/migrations/sql/10.soft-delete-listings.js

@@ -0,0 +1,16 @@
+/*
+ * Copyright (c) 2026 by Christian Kellner.
+ * Licensed under Apache-2.0 with Commons Clause and Attribution/Naming Clause
+ */
+
+export function up(db) {
+  // 1. Add manually_deleted column
+  db.exec(`ALTER TABLE listings ADD COLUMN manually_deleted INTEGER NOT NULL DEFAULT 0;`);
+
+  // 2. Remove change_set column
+  try {
+    db.exec(`ALTER TABLE listings DROP COLUMN change_set;`);
+  } catch {
+    // if column does not exists for whatever reason
+  }
+}