Explain that the public folder is not local to the app folder at runtime

[macdonst]

Some folks have made the mistake of trying to read the /public folder like it was a local filesystem. The /app folder is deployed to a Lambda, while the /public folder is a S3 bucket. We should let folks know the best way to resolve this at runtime.

[tbeseda]

Just 2 cents from my experience generally moving to a "serverless" architecture:
I had been running Node Express-style servers with middleware that served static assets out of a public folder.
When I started making cloud functions to handle integration tasks, it's not much of a shift since my main site was still either coming out of the Express app or it was static.
But having the whole app out of a series of Lambdas (Arc was my pick for this), there was a disconnect where I had to realize "oh yeah, this stuff is split up across resources that don't live on the same filesystem."
So, it's not just an Enhance thing, but a larger FWA paradigm shift.

Anyway, just anecdotal.
I think it can be helped with docs and maybe a diagram.