feat(upload): enhance upload functionality with chunk management and cancellation support

- Updated Upload.vue to include cancelItem functionality in the upload queue.
- Modified UploadQueue.vue to emit cancel events for individual items.
- Enhanced UploadQueueItem.vue to display cancel button for ongoing uploads.
- Added merge.ts for handling manifest creation and S3 operations for chunk uploads.
- Introduced temp.html for testing multi-threaded chunk uploads with progress tracking.
- Created AGENTS.md for comprehensive project documentation and guidelines.

package.json

@@ -10,16 +10,12 @@
     "tail": "wrangler tail"
   },
   "dependencies": {
-    "@aws-sdk/client-s3": "^3.983.0",
-    "@aws-sdk/s3-presigned-post": "^3.983.0",
-    "@aws-sdk/s3-request-presigner": "^3.983.0",
-    "@hiogawa/tiny-rpc": "^0.2.3-pre.18",
-    "@hiogawa/utils": "^1.7.0",
     "@pinia/colada": "^0.21.2",
     "@primeuix/themes": "^2.0.3",
     "@primevue/forms": "^4.5.4",
     "@unhead/vue": "^2.1.2",
     "@vueuse/core": "^14.2.0",
+    "aws4fetch": "^1.0.20",
     "clsx": "^2.1.1",
     "hono": "^4.11.7",
     "is-mobile": "^5.0.0",