Files and Encryption

These are separate capabilities and now have dedicated guides:

• Files and Blob Storage — s.file(), BlobDbPlugin, memory/file-system/S3 blob stores, and direct browser uploads.
• Encryption — AES-GCM property transforms, searchable encryption, key rotation, and custom transforms.

Both compose with every storage plugin, but they operate differently: file handling wraps an IDbPlugin, while encryption is declared on individual schema properties.