File storage

IBlobStorage stores files under keys. The provider is configuration, the code stays the same.

await storage.PutAsync($"documents/{document.Id}", stream, contentType, ct);
await using var content = await storage.OpenReadAsync($"documents/{document.Id}", ct);
await storage.DeleteAsync($"documents/{document.Id}", ct);

Coworkee:Storage:Provider	Settings
FileSystem (default)	FileSystem:Root
S3	S3:ServiceUrl (MinIO and other S3 stores), Region, Bucket, AccessKey, SecretKey, CreateBucket
AzureBlob	AzureBlob:ConnectionString, Container

BlobLinks creates signed, expiring links for downloads that must work without a session, for example in mails. The app host gives every service with Coworkee.Storage the same folder, .data/blobs next to src.