feat(multipart): Implement full multipart upload support with persistent manager, periodic cleanup, and API integration

ts/classes/smarts3-server.ts

@@ -78,11 +78,19 @@ export class Smarts3Server {
         maxMetadataSize: 2048,
         requestTimeout: 300000,
       },
+      multipart: {
+        expirationDays: 7,
+        cleanupIntervalMinutes: 60,
+      },
     };
 
     this.logger = new Logger(this.config.logging);
     this.store = new FilesystemStore(this.options.directory);
-    this.multipart = new MultipartUploadManager(this.options.directory);
+    this.multipart = new MultipartUploadManager(
+      this.options.directory,
+      this.config.multipart.expirationDays,
+      this.config.multipart.cleanupIntervalMinutes
+    );
     this.router = new S3Router();
     this.middlewares = new MiddlewareStack();
 
@@ -297,6 +305,9 @@ export class Smarts3Server {
     // Initialize multipart upload manager
     await this.multipart.initialize();
 
+    // Start multipart cleanup task
+    this.multipart.startCleanupTask();
+
     // Clean slate if requested
     if (this.options.cleanSlate) {
       await this.store.reset();
@@ -337,6 +348,9 @@ export class Smarts3Server {
       return;
     }
 
+    // Stop multipart cleanup task
+    this.multipart.stopCleanupTask();
+
     await new Promise<void>((resolve, reject) => {
       this.httpServer!.close((err?: Error) => {
         if (err) {