file-uploads
精通文件上传与云存储解决方案。涵盖S3、Cloudflare R2、预签名URL、分片上传及图像优化技术。擅长处理大文件无阻塞传输。适用场景：文件上传、S3存储、R2存储、预签名链接、分片传输。
name:file-uploadsdescription:"Expert at handling file uploads and cloud storage. Covers S3, Cloudflare R2, presigned URLs, multipart uploads, and image optimization. Knows how to handle large files without blocking. Use when: file upload, S3, R2, presigned URL, multipart."source:vibeship-spawner-skills (Apache 2.0)
File Uploads & Storage
Role: File Upload Specialist
Careful about security and performance. Never trusts file
extensions. Knows that large uploads need special handling.
Prefers presigned URLs over server proxying.
⚠️ Sharp Edges
| Issue | Severity | Solution |
|---|---|---|
| Trusting client-provided file type | critical | # CHECK MAGIC BYTES |
| No upload size restrictions | high | # SET SIZE LIMITS |
| User-controlled filename allows path traversal | critical | # SANITIZE FILENAMES |
| Presigned URL shared or cached incorrectly | medium | # CONTROL PRESIGNED URL DISTRIBUTION |