feat(multipart): Add multipart upload support with MultipartUploadManager and controller integration

ts/classes/smarts3-server.ts

@@ -5,6 +5,7 @@ import { S3Context } from './context.js';
 import { FilesystemStore } from './filesystem-store.js';
 import { S3Error } from './s3-error.js';
 import { Logger } from './logger.js';
+import { MultipartUploadManager } from './multipart-manager.js';
 import { ServiceController } from '../controllers/service.controller.js';
 import { BucketController } from '../controllers/bucket.controller.js';
 import { ObjectController } from '../controllers/object.controller.js';
@@ -28,6 +29,7 @@ export class Smarts3Server {
   private router: S3Router;
   private middlewares: MiddlewareStack;
   public store: FilesystemStore; // Made public for direct access from Smarts3 class
+  public multipart: MultipartUploadManager; // Made public for controller access
   private options: Required<Omit<ISmarts3ServerOptions, 'config'>>;
   private config: Required<ISmarts3Config>;
   private logger: Logger;
@@ -80,6 +82,7 @@ export class Smarts3Server {
 
     this.logger = new Logger(this.config.logging);
     this.store = new FilesystemStore(this.options.directory);
+    this.multipart = new MultipartUploadManager(this.options.directory);
     this.router = new S3Router();
     this.middlewares = new MiddlewareStack();
 
@@ -220,6 +223,7 @@ export class Smarts3Server {
 
     // Object level (/:bucket/:key*)
     this.router.put('/:bucket/:key*', ObjectController.putObject);
+    this.router.post('/:bucket/:key*', ObjectController.postObject); // For multipart operations
     this.router.get('/:bucket/:key*', ObjectController.getObject);
     this.router.head('/:bucket/:key*', ObjectController.headObject);
     this.router.delete('/:bucket/:key*', ObjectController.deleteObject);
@@ -232,7 +236,7 @@ export class Smarts3Server {
     req: plugins.http.IncomingMessage,
     res: plugins.http.ServerResponse
   ): Promise<void> {
-    const context = new S3Context(req, res, this.store);
+    const context = new S3Context(req, res, this.store, this.multipart);
 
     try {
       // Execute middleware stack
@@ -290,6 +294,9 @@ export class Smarts3Server {
     // Initialize store
     await this.store.initialize();
 
+    // Initialize multipart upload manager
+    await this.multipart.initialize();
+
     // Clean slate if requested
     if (this.options.cleanSlate) {
       await this.store.reset();