adding backup/restore ability

lib/services/storage/SqliteConnection.js

@@ -155,3 +155,21 @@ class SqliteConnection {
 }
 
 export default SqliteConnection;
+
+// Centralized DB path computation to avoid duplication across modules
+// Returns: { dir, dbPath }
+/**
+ * Compute the absolute SQLite database directory and file path based on configuration.
+ * Ensures the directory exists on disk.
+ * @returns {Promise<{dir:string, dbPath:string}>} Absolute directory and database file path.
+ */
+export async function computeDbPath() {
+  const cfg = await readConfigFromStorage();
+  const rawDir = cfg?.sqlitepath && cfg.sqlitepath.length > 0 ? cfg.sqlitepath : '/db';
+  const relDir = rawDir.startsWith('/') ? rawDir.slice(1) : rawDir;
+  const absDir = path.isAbsolute(relDir) ? relDir : path.join(process.cwd(), relDir);
+  const dbPath = path.join(absDir, 'listings.db');
+  const dir = path.dirname(dbPath);
+  if (!fs.existsSync(dir)) fs.mkdirSync(dir, { recursive: true });
+  return { dir: absDir, dbPath };
+}