@pai/files

FileProvider contract. Apps pick Mongo GridFS or in-memory.

FileProvider stores immutable attachment bytes. You do not implement this unless you are writing an adapter.

Callable	When
`createMongoFileProvider()`	Production
`createInMemoryFileProvider()`	Tests, first app

Pass as createPai({ files }). Upload first, then send — Files.

createRedisThreadLiveProvider()

Cross-process live events for watch() when more than one Node process serves threads.

createInMemoryFileProvider()

Ephemeral attachments for tests and the first app.