feat(storage): add Bitcask storage migration, binary WAL, and data compaction support

ts/ts_local/classes.localsmartdb.ts

@@ -2,6 +2,7 @@ import * as crypto from 'crypto';
 import * as path from 'path';
 import * as os from 'os';
 import { SmartdbServer } from '../ts_smartdb/index.js';
+import { StorageMigrator } from '../ts_migration/index.js';
 
 /**
  * Connection information returned by LocalSmartDb.start()
@@ -73,6 +74,10 @@ export class LocalSmartDb {
       throw new Error('LocalSmartDb is already running');
     }
 
+    // Run storage migration before starting the Rust engine
+    const migrator = new StorageMigrator(this.options.folderPath);
+    await migrator.run();
+
     // Use provided socket path or generate one
     this.generatedSocketPath = this.options.socketPath ?? this.generateSocketPath();